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Nikravangolsefid N, Suppadungsuk S, Singh W, Palevsky PM, Murugan R, Kashani KB. Behind the scenes: Key lessons learned from the RELIEVE-AKI clinical trial. J Crit Care 2024; 83:154845. [PMID: 38879964 PMCID: PMC11297665 DOI: 10.1016/j.jcrc.2024.154845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 06/08/2024] [Accepted: 06/10/2024] [Indexed: 06/18/2024]
Abstract
Continuous kidney replacement therapy (CKRT) is commonly used to manage critically ill patients with severe acute kidney injury. While recent trials focused on the correct dosing and timing of CKRT, our understanding regarding the optimum dose of net ultrafiltration is limited to retrospective data. The Restrictive versus Liberal Rate of Extracorporeal Volume Removal Evaluation in Acute Kidney Injury (RELIEVE-AKI) trial has been conducted to assess the feasibility of a prospective randomized trial in determining the optimum net ultrafiltration rate. This paper outlines the relevant challenges and solutions in implementing this complex ICU-based trial. Several difficulties were encountered, starting with clinical issues related to conducting a trial on patients with rapidly changing hemodynamics, low patient recruitment rates, increased nursing workload, and the enormous volume of data generated by patients undergoing prolonged CKRT. Following several brainstorming sessions, several points were highlighted to be considered, including the need to streamline the intervention, add more flexibility in the trial protocols, ensure comprehensive a priori planning, particularly regarding nursing roles and their compensation, and enhance data management systems. These insights are critical for guiding future ICU-based dynamically titrated intervention trials, leading to more efficient trial management, improved data quality, and enhanced patient safety.
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Affiliation(s)
- Nasrin Nikravangolsefid
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Supawadee Suppadungsuk
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA; Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samut Prakan, Thailand
| | - Waryaam Singh
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Paul M Palevsky
- The Program for Critical Care Nephrology, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Renal and Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Kidney Medicine Section, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, USA
| | - Raghavan Murugan
- The Program for Critical Care Nephrology, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; The Center for Research, Investigation, and Systems Modeling of Acute Illness (CRISMA), Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Kianoush B Kashani
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic, Rochester, MN, USA.
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Perkins GD, Neumar R, Hsu CH, Hirsch KG, Aneman A, Becker LB, Couper K, Callaway CW, Hoedemaekers CWE, Lim SL, Meurer W, Olasveengen T, Sekhon MS, Skrifvars M, Soar J, Tsai MS, Vengamma B, Nolan JP. Improving Outcomes After Post-Cardiac Arrest Brain Injury: A Scientific Statement From the International Liaison Committee on Resuscitation. Resuscitation 2024; 201:110196. [PMID: 38932555 DOI: 10.1016/j.resuscitation.2024.110196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
This scientific statement presents a conceptual framework for the pathophysiology of post-cardiac arrest brain injury, explores reasons for previous failure to translate preclinical data to clinical practice, and outlines potential paths forward. Post-cardiac arrest brain injury is characterized by 4 distinct but overlapping phases: ischemic depolarization, reperfusion repolarization, dysregulation, and recovery and repair. Previous research has been challenging because of the limitations of laboratory models; heterogeneity in the patient populations enrolled; overoptimistic estimation of treatment effects leading to suboptimal sample sizes; timing and route of intervention delivery; limited or absent evidence that the intervention has engaged the mechanistic target; and heterogeneity in postresuscitation care, prognostication, and withdrawal of life-sustaining treatments. Future trials must tailor their interventions to the subset of patients most likely to benefit and deliver this intervention at the appropriate time, through the appropriate route, and at the appropriate dose. The complexity of post-cardiac arrest brain injury suggests that monotherapies are unlikely to be as successful as multimodal neuroprotective therapies. Biomarkers should be developed to identify patients with the targeted mechanism of injury, to quantify its severity, and to measure the response to therapy. Studies need to be adequately powered to detect effect sizes that are realistic and meaningful to patients, their families, and clinicians. Study designs should be optimized to accelerate the evaluation of the most promising interventions. Multidisciplinary and international collaboration will be essential to realize the goal of developing effective therapies for post-cardiac arrest brain injury.
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Buell KG, Semler MW, Churpek MM. Individualized treatment in critical care: the oxygenation paradigm. Intensive Care Med 2024; 50:1327-1330. [PMID: 38985181 DOI: 10.1007/s00134-024-07538-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 06/21/2024] [Indexed: 07/11/2024]
Affiliation(s)
- Kevin G Buell
- Division of Pulmonary and Critical Care, Department of Medicine, University of Chicago, 5841 South Maryland Ave., MC 6076, Chicago, IL, 60637, USA.
| | - Matthew W Semler
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Vanderbilt Institute for Clinical and Translational Research, Nashville, TN, USA
| | - Matthew M Churpek
- Division of Pulmonary and Critical Care, Department of Medicine, University of Wisconsin-Madison, Madison, WI, USA
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Nielsen FM, Klitgaard TL, Bruun NH, Møller MH, Schjørring OL, Rasmussen BS. Lower or higher oxygenation targets in the intensive care unit: an individual patient data meta-analysis. Intensive Care Med 2024; 50:1275-1286. [PMID: 38990335 PMCID: PMC11306534 DOI: 10.1007/s00134-024-07523-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Accepted: 06/11/2024] [Indexed: 07/12/2024]
Abstract
PURPOSE Optimal oxygenation targets for patients with acute hypoxemic respiratory failure in the intensive care unit (ICU) are not clearly defined due to substantial variability in design of previous trials. This study aimed to perform a pre-specified individual patient data meta-analysis of the Handling Oxygenation Targets in the ICU (HOT-ICU) and the Handling Oxygenation Targets in coronavirus disease 2019 (COVID-19) (HOT-COVID) trials to compare targeting a partial pressure of arterial oxygen (PaO2) of 8-12 kPa in adult ICU patients, assessing both benefits and harms. METHODS We assessed 90-day all-cause mortality and days alive without life support in 90 days using a generalised mixed model. Heterogeneity of treatment effects (HTE) was evaluated in 14 subgroups, and results graded using the Instrument to assess the Credibility of Effect Modification Analyses (ICEMAN). RESULTS At 90 days, mortality was 40.4% (724/1792) in the 8 kPa group and 40.9% (733/1793) in the 12 kPa group (risk ratio, 0.99; 95% confidence interval [CI] 0.92-1.07; P = 0.80). No difference was observed in number of days alive without life support. Subgroup analyses indicated more days alive without life support in COVID-19 patients targeting 8 kPa (P = 0.04) (moderate credibility), and lower mortality (P = 0.03) and more days alive without life support (P = 0.02) in cancer-patients targeting 12 kPa (low credibility). CONCLUSION This study reported no overall differences comparing a PaO2 target of 8-12 kPa on mortality or days alive without life support in 90 days. Subgroup analyses suggested HTE in patients with COVID-19 (moderate credibility) and cancer (low credibility).
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Affiliation(s)
- Frederik Mølgaard Nielsen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Hobrovej 18-21, 9000, Aalborg, Denmark.
| | - Thomas L Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Hobrovej 18-21, 9000, Aalborg, Denmark
| | - Niels Henrik Bruun
- Unit of Clinical Biostatistics, Aalborg University Hospital, Aalborg, Denmark
| | - Morten H Møller
- Department of Intensive Care, Rigshospitalet, Copenhagen, Denmark
| | - Olav L Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Hobrovej 18-21, 9000, Aalborg, Denmark
| | - Bodil S Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Hobrovej 18-21, 9000, Aalborg, Denmark
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Peng L, Qin X, Chen L. Hyperoxemia may be more beneficial for patients with sepsis. Crit Care 2024; 28:252. [PMID: 39030635 PMCID: PMC11264671 DOI: 10.1186/s13054-024-05017-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Accepted: 07/04/2024] [Indexed: 07/21/2024] Open
Affiliation(s)
- Liyuan Peng
- Department of Critical Care Medicine, Affiliated Hospital of Chengdu University, 82 North 2nd Section of 2nd Ring Road, Jinniu District, Chengdu, 610041, Sichuan, China
| | - Xiaoming Qin
- Department of Critical Care Medicine, Affiliated Hospital of Chengdu University, 82 North 2nd Section of 2nd Ring Road, Jinniu District, Chengdu, 610041, Sichuan, China
| | - Lvlin Chen
- Department of Critical Care Medicine, Affiliated Hospital of Chengdu University, 82 North 2nd Section of 2nd Ring Road, Jinniu District, Chengdu, 610041, Sichuan, China.
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Rixecker TM, Ast V, Rodriguez E, Mazuru V, Wagenpfeil G, Mang S, Muellenbach RM, Nobile L, Ajouri J, Bals R, Seiler F, Taccone FS, Lepper PM. Carbon Dioxide Targets in Extracorporeal Membrane Oxygenation for Acute Respiratory Distress Syndrome. ASAIO J 2024:00002480-990000000-00509. [PMID: 38905594 DOI: 10.1097/mat.0000000000002255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2024] Open
Abstract
Target values for arterial carbon dioxide tension (PaCO2) in extracorporeal membrane oxygenation (ECMO) for acute respiratory distress syndrome (ARDS) are unknown. We hypothesized that lower PaCO2 values on ECMO would be associated with lighter sedation. We used data from two independent patient cohorts with ARDS spending 1,177 days (discovery cohort, 69 patients) and 516 days (validation cohort, 70 patients) on ECMO and evaluated the associations between daily PaCO2, pH, and bicarbonate (HCO3) with sedation. Median PaCO2 was 41 (interquartile range [IQR] = 37-46) mm Hg and 41 (IQR = 37-45) mm Hg in the discovery and the validation cohort, respectively. Lower PaCO2 and higher pH but not bicarbonate (HCO3) served as significant predictors for reaching a Richmond Agitation Sedation Scale (RASS) target range of -2 to +1 (lightly sedated to restless). After multivariable adjustment for mortality, tracheostomy, prone positioning, vasoactive inotropic score, Simplified Acute Physiology Score (SAPS) II or Sequential Organ Failure Assessment (SOFA) Score and day on ECMO, only PaCO2 remained significantly associated with the RASS target range (adjusted odds ratio 1.1 [95% confidence interval (CI) = 1.01-1.21], p = 0.032 and 1.29 [95% CI = 1.1-1.51], p = 0.001 per mm Hg decrease in PaCO2 for the discovery and the validation cohort, respectively). A PaCO2 ≤40 mm Hg, as determined by the concordance probability method, was associated with a significantly increased probability of a sedation level within the RASS target range in both patient cohorts (adjusted odds ratio = 2.92 [95% CI = 1.17-7.24], p = 0.021 and 6.82 [95% CI = 1.50-31.0], p = 0.013 for the discovery and the validation cohort, respectively).
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Affiliation(s)
- Torben M Rixecker
- From the Department of Internal Medicine V (Pneumology, Allergology and Intensive Care Medicine), University Medical Center and Saarland University, Germany
| | - Vanessa Ast
- From the Department of Internal Medicine V (Pneumology, Allergology and Intensive Care Medicine), University Medical Center and Saarland University, Germany
| | - Elianna Rodriguez
- Department of Intensive Care, Hôpital Universitaire de Bruxelles (HUB), Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Vitalie Mazuru
- From the Department of Internal Medicine V (Pneumology, Allergology and Intensive Care Medicine), University Medical Center and Saarland University, Germany
| | - Gudrun Wagenpfeil
- Department of Medical Biometry, Epidemiology and Medical Informatics, Saarland University, Homburg, Germany
| | - Sebastian Mang
- From the Department of Internal Medicine V (Pneumology, Allergology and Intensive Care Medicine), University Medical Center and Saarland University, Germany
| | - Ralf M Muellenbach
- Department of Anesthesiology and Critical Care Medicine, Campus Kassel of the University of Southampton, Kassel, Germany
| | - Leda Nobile
- Department of Intensive Care, Hôpital Universitaire de Bruxelles (HUB), Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Jonas Ajouri
- Department of Anesthesiology and Critical Care Medicine, Campus Kassel of the University of Southampton, Kassel, Germany
| | - Robert Bals
- From the Department of Internal Medicine V (Pneumology, Allergology and Intensive Care Medicine), University Medical Center and Saarland University, Germany
| | - Frederik Seiler
- From the Department of Internal Medicine V (Pneumology, Allergology and Intensive Care Medicine), University Medical Center and Saarland University, Germany
| | - Fabio Silvio Taccone
- Department of Intensive Care, Hôpital Universitaire de Bruxelles (HUB), Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Philipp M Lepper
- From the Department of Internal Medicine V (Pneumology, Allergology and Intensive Care Medicine), University Medical Center and Saarland University, Germany
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Winters ME, Hu K, Martinez JP, Mallemat H, Brady WJ. The critical care literature 2022. Am J Emerg Med 2024; 80:123-131. [PMID: 38574434 DOI: 10.1016/j.ajem.2024.03.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 03/31/2024] [Indexed: 04/06/2024] Open
Abstract
The number of critically ill patients that present to emergency departments across the world has risen steadily for nearly two decades. Despite a decrease in initial emergency department (ED) volumes early in the COVID-19 pandemic, the proportion of critically ill patients is now higher than pre-pandemic levels [1]. The emergency physician (EP) is often the first physician to evaluate and resuscitate a critically ill patient. In addition, EPs are frequently tasked with providing critical care long beyond the initial resuscitation. Prolonged boarding of critically ill patients in the ED is associated with increased duration of mechanical ventilation, increased intensive care unit (ICU) length of stay, increased hospital length of stay, increased medication-related adverse events, and increased in-hospital, 30-day, and 90-day mortality [2-4]. Given the continued increase in critically ill patients along with the increases in boarding critically ill patients in the ED, it is imperative for the EP to be knowledgeable about recent literature in resuscitation and critical care medicine, so that critically ill patients continue to receive evidence-based care. This review summarizes important articles published in 2022 that pertain to the resuscitation and management of select critically ill ED patients. These articles have been selected based on the authors review of key critical care, resuscitation, emergency medicine, and medicine journals and their opinion of the importance of study findings as it pertains to the care of the critically ill ED patient. Topics covered in this article include cardiac arrest, post-cardiac arrest care, rapid sequence intubation, mechanical ventilation, fluid resuscitation, and sepsis.
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Affiliation(s)
- Michael E Winters
- Departments of Emergency Medicine and Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
| | - Kami Hu
- Departments of Emergency Medicine and Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Joseph P Martinez
- Departments of Emergency Medicine and Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Haney Mallemat
- Internal Medicine and Emergency Medicine, Cooper Medical School of Rowan University, Camden, NJ, USA
| | - William J Brady
- Departments of Emergency Medicine and Medicine, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
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Nielsen MB, Klitgaard TL, Weinreich UM, Nielsen FM, Perner A, Schjørring OL, Rasmussen BS. Effects of a lower versus a higher oxygenation target in intensive care unit patients with chronic obstructive pulmonary disease and acute hypoxaemic respiratory failure: a subgroup analysis of a randomised clinical trial. BJA OPEN 2024; 10:100281. [PMID: 38711834 PMCID: PMC11070685 DOI: 10.1016/j.bjao.2024.100281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 03/19/2024] [Indexed: 05/08/2024]
Abstract
Background Oxygen supplementation is ubiquitous in intensive care unit (ICU) patients with chronic obstructive pulmonary disease (COPD) and acute hypoxaemia, but the optimal oxygenation target has not been established. Methods This was a pre-planned subgroup analysis of the Handling Oxygenation Targets in the ICU (HOT-ICU) trial, which allocated patients with acute hypoxaemia to a lower oxygenation target (partial pressure of arterial oxygen [Pao2] of 8 kPa) vs a higher target (Pao2 of 12 kPa) during ICU admission, for up to 90 days; the allocation was stratified for presence or absence of COPD. Here, we report key outcomes for patients with COPD. Results The HOT-ICU trial enrolled 2928 patients of whom 563 had COPD; 277 were allocated to the lower and 286 to the higher oxygenation group. After allocation, the median Pao2 was 9.1 kPa (inter-quartile range 8.7-9.9) in the lower group vs 12.1 kPa (11.2-12.9) in the higher group. Data for arterial carbon dioxide (Paco2) were available for 497 patients (88%) with no between-group difference in time-weighted average; median Paco2 6.0 kPa (5.2-7.2) in the lower group vs 6.2 kPa (5.4-7.3) in the higher group. At 90 days, 122/277 patients (44%) in the lower oxygenation group had died vs 132/285 patients (46%) in the higher (relative risk 0.98; 95% confidence interval 0.82-1.17; P=0.67). No statistically significant differences were found in any secondary outcome. Conclusions In ICU patients with COPD and acute hypoxaemia, a lower vs a higher oxygenation target did not reduce mortality. There were no between-group differences in Paco2 or in secondary outcomes. Clinical trial registration NCT03174002, EudraCT number 2017-000632-34.
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Affiliation(s)
- Maria B. Nielsen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Thomas L. Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Ulla M. Weinreich
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Department of Respiratory Diseases, Aalborg University Hospital, Aalborg, Denmark
- Research Unit of Respiratory Diseases, Aalborg University Hospital, Aalborg, Denmark
| | - Frederik M. Nielsen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Anders Perner
- Department of Intensive Care, Copenhagen University Hospital – Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Olav L. Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Bodil S. Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Hyun DG, Ahn JH, Huh JW, Hong SB, Koh Y, Oh DK, Lee SY, Park MH, Lim CM. The association of arterial partial oxygen pressure with mortality in critically ill sepsis patients: a nationwide observational cohort study. Crit Care 2024; 28:187. [PMID: 38816883 PMCID: PMC11140987 DOI: 10.1186/s13054-024-04960-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 05/17/2024] [Indexed: 06/01/2024] Open
Abstract
BACKGROUND Although several trials were conducted to optimize the oxygenation range in intensive care unit (ICU) patients, no studies have yet reached a universal recommendation on the optimal a partial pressure of oxygen in arterial blood (PaO2) range in patients with sepsis. Our aim was to evaluate whether a relatively high arterial oxygen tension is associated with longer survival in sepsis patients compared with conservative arterial oxygen tension. METHODS From the Korean Sepsis Alliance nationwide registry, patients treated with liberal PaO2 (PaO2 ≥ 80 mm Hg) were 1:1 matched with those treated with conservative PaO2 (PaO2 < 80 mm Hg) over the first three days after ICU admission according to the propensity score. The primary outcome was 28-day mortality. RESULTS The median values of PaO2 over the first three ICU days in 1211 liberal and 1211 conservative PaO2 groups were, respectively, 107.2 (92.0-134.0) and 84.4 (71.2-112.0) in day 1110.0 (93.4-132.0) and 80.0 (71.0-100.0) in day 2, and 106.0 (91.9-127.4) and 78.0 (69.0-94.5) in day 3 (all p-values < 0.001). The liberal PaO2 group showed a lower likelihood of death at day 28 (14.9%; hazard ratio [HR], 0.79; 95% confidence interval [CI] 0.65-0.96; p-value = 0.017). ICU (HR, 0.80; 95% CI 0.67-0.96; p-value = 0.019) and hospital mortalities (HR, 0.84; 95% CI 0.73-0.97; p-value = 0.020) were lower in the liberal PaO2 group. On ICU days 2 (p-value = 0.007) and 3 (p-value < 0.001), but not ICU day 1, hyperoxia was associated with better prognosis compared with conservative oxygenation., with the lowest 28-day mortality, especially at PaO2 of around 100 mm Hg. CONCLUSIONS In critically ill patients with sepsis, higher PaO2 (≥ 80 mm Hg) during the first three ICU days was associated with a lower 28-day mortality compared with conservative PaO2.
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Affiliation(s)
- Dong-Gon Hyun
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Jee Hwan Ahn
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Jin Won Huh
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Sang-Bum Hong
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Younsuck Koh
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Dong Kyu Oh
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Su Yeon Lee
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Mi Hyeon Park
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Chae-Man Lim
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea.
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Stroh L, Nurjadi D, Uhle F, Bruckner T, Kalenka A, Weigand MA, Fiedler-Kalenka MO. Pulmonary Events in ICU patients with hyperoxia: is it possible to relate arterial partial pressure of oxygen to coded diseases? A retrospective analysis. Med Intensiva 2024:S2173-5727(24)00107-3. [PMID: 38782671 DOI: 10.1016/j.medine.2024.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
OBJECTIVE Oxygen has been used liberally in ICUs for a long time to prevent hypoxia in ICU- patients. Current evidence suggests that paO2 >300 mmHg should be avoided, it remains uncertain whether an "optimal level" exists. We investigated how "mild" hyperoxia influences diseases and in-hospital mortality. DESIGN This is a retrospective study. SETTING 112 mechanically ventilated ICU-patients were enrolled. PATIENTS OR PARTICIPANTS 112 ventilated patients were included and categorized into two groups based on the median paO2 values measured in initial 24 h of mechanical ventilation: normoxia group (paO2 ≤ 100 mmHg, n = 43) and hyperoxia group patients (paO2 > 100 mmHg, n = 69). INTERVENTIONS No interventions were performed. MAIN VARIABLES OF INTEREST The primary outcome was the incidence of pulmonary events, the secondary outcomes included the incidence of other new organ dysfunctions and in-hospital mortality. RESULTS The baseline characteristics, such as age, body mass index, lactate levels, and severity of disease scores, were similar in both groups. There were no statistically significant differences in the incidence of pulmonary events, infections, and new organ dysfunctions between the groups. 27 out of 69 patients (39.1%) in the "mild" hyperoxia group and 12 out of 43 patients (27.9%) in the normoxia group died during their ICU or hospital stay (p = 0.54). The mean APACHE Score was 29.4 (SD 7.9) in the normoxia group and 30.0 (SD 6.7) in the hyperoxia group (p = 0.62). CONCLUSIONS We found no differences in pulmonary events, other coded diseases, and in-hospital mortality between both groups. It remains still unclear what the "best oxygen regime" is for intensive care patients.
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Affiliation(s)
- Lubov Stroh
- Department of Anesthesiology, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Dennis Nurjadi
- Department of Infectious Diseases and Microbiology, Schleswig-Holstein University Hospital, 23538 Lübeck, Germany
| | - Florian Uhle
- Department of Anesthesiology, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Thomas Bruckner
- Institute of Medical Biometry and Informatics (IMBI), University of Heidelberg, Heidelberg, Germany
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Liu C, Quan X, Tian X, Zhao Y, Li HF, Mak JCW, Wang Z, Mao S, Zheng Y. Inhaled Macrophage Apoptotic Bodies-Engineered Microparticle Enabling Construction of Pro-Regenerative Microenvironment to Fight Hypoxic Lung Injury in Mice. ACS NANO 2024; 18:13361-13376. [PMID: 38728619 PMCID: PMC11112977 DOI: 10.1021/acsnano.4c03421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/22/2024] [Accepted: 05/01/2024] [Indexed: 05/12/2024]
Abstract
Oxygen therapy cannot rescue local lung hypoxia in patients with severe respiratory failure. Here, an inhalable platform is reported for overcoming the aberrant hypoxia-induced immune changes and alveolar damage using camouflaged poly(lactic-co-glycolic) acid (PLGA) microparticles with macrophage apoptotic body membrane (cMAB). cMABs are preloaded with mitochondria-targeting superoxide dismutase/catalase nanocomplexes (NCs) and modified with pathology-responsive macrophage growth factor colony-stimulating factor (CSF) chains, which form a core-shell platform called C-cMAB/NC with efficient deposition in deeper alveoli and high affinity to alveolar epithelial cells (AECs) after CSF chains are cleaved by matrix metalloproteinase 9. Therefore, NCs can be effectively transported into mitochondria to inhibit inflammasome-mediated AECs damage in mouse models of hypoxic acute lung injury. Additionally, the at-site CSF release is sufficient to rescue circulating monocytes and macrophages and alter their phenotypes, maximizing synergetic effects of NCs on creating a pro-regenerative microenvironment that enables resolution of lung injury and inflammation. This inhalable platform may have applications to numerous inflammatory lung diseases.
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Affiliation(s)
- Chang Liu
- State
Key Laboratory of Quality Research in Chinese Medicine, Institute
of Chinese Medical Sciences, University
of Macau, Macau999078, China
| | - Xingping Quan
- State
Key Laboratory of Quality Research in Chinese Medicine, Institute
of Chinese Medical Sciences, University
of Macau, Macau999078, China
| | - Xidong Tian
- State
Key Laboratory of Quality Research in Chinese Medicine, Institute
of Chinese Medical Sciences, University
of Macau, Macau999078, China
| | - Yonghua Zhao
- State
Key Laboratory of Quality Research in Chinese Medicine, Institute
of Chinese Medical Sciences, University
of Macau, Macau999078, China
- Department
of Pharmaceutical Sciences, Faculty of Health Sciences, University of Macau, Macau999078, China
| | - Hai-Feng Li
- Joint
Key Laboratory of the Ministry of Education, Institute of Applied
Physics and Materials Engineering, University
of Macau, Macau999078, China
| | - Judith Choi Wo Mak
- Department
of Pharmacology and Pharmacy, LKS Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong,
China
| | - Zhenping Wang
- Department
of Dermatology, School of Medicine, University
of California, San Diego, California92093, United States
| | - Shirui Mao
- School of
Pharmacy, Shenyang Pharmaceutical University, Shenyang110016, China
- Joint
International Research Laboratory of Intelligent Drug Delivery Systems, Ministry of Education, Shenyang 110016, China
| | - Ying Zheng
- State
Key Laboratory of Quality Research in Chinese Medicine, Institute
of Chinese Medical Sciences, University
of Macau, Macau999078, China
- Department
of Pharmaceutical Sciences, Faculty of Health Sciences, University of Macau, Macau999078, China
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12
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Tsonas AM, van Meenen DM, Botta M, Shrestha GS, Roca O, Paulus F, Neto AS, Schultz MJ. Hyperoxemia in invasively ventilated COVID-19 patients-Insights from the PRoVENT-COVID study. Pulmonology 2024; 30:272-281. [PMID: 36274046 PMCID: PMC10155497 DOI: 10.1016/j.pulmoe.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 08/29/2022] [Accepted: 09/01/2022] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE We determined the prevalences of hyperoxemia and excessive oxygen use, and the epidemiology, ventilation characteristics and outcomes associated with hyperoxemia in invasively ventilated patients with coronavirus disease 2019 (COVID-19). METHODS Post hoc analysis of a national, multicentre, observational study in 22 ICUs. Patients were classified in the first two days of invasive ventilation as 'hyperoxemic' or 'normoxemic'. The co-primary endpoints were prevalence of hyperoxemia (PaO2 > 90 mmHg) and prevalence of excessive oxygen use (FiO2 ≥ 60% while PaO2 > 90 mmHg or SpO2 > 92%). Secondary endpoints included ventilator settings and ventilation parameters, duration of ventilation, length of stay (LOS) in ICU and hospital, and mortality in ICU, hospital, and at day 28 and 90. We used propensity matching to control for observed confounding factors that may influence endpoints. RESULTS Of 851 COVID-19 patients, 225 (26.4%) were classified as hyperoxemic. Excessive oxygen use occurred in 385 (45.2%) patients. Acute respiratory distress syndrome (ARDS) severity was lowest in hyperoxemic patients. Hyperoxemic patients were ventilated with higher positive end-expiratory pressure (PEEP), while rescue therapies for hypoxemia were applied more often in normoxemic patients. Neither in the unmatched nor in the matched analysis were there differences between hyperoxemic and normoxemic patients with regard to any of the clinical outcomes. CONCLUSION In this cohort of invasively ventilated COVID-19 patients, hyperoxemia occurred often and so did excessive oxygen use. The main differences between hyperoxemic and normoxemic patients were ARDS severity and use of PEEP. Clinical outcomes were not different between hyperoxemic and normoxemic patients.
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Affiliation(s)
- A M Tsonas
- Department of Intensive Care, Amsterdam UMC, location 'AMC', Amsterdam, The Netherlands.
| | - D M van Meenen
- Department of Intensive Care, Amsterdam UMC, location 'AMC', Amsterdam, The Netherlands
| | - M Botta
- Department of Intensive Care, Amsterdam UMC, location 'AMC', Amsterdam, The Netherlands
| | - G S Shrestha
- Department of Critical Care Medicine, Tribhuvan University Teaching Hospital, Maharajgunj, Kathmandu, Nepal
| | - O Roca
- Department of Intensive Care, Vall d'Hebron Univerity Hospital, Barcelona, Spain; Ciber Enfermedades Respiratorias (CibeRes), Instituto de Salud Carlos III, Madrid, Spain
| | - F Paulus
- Department of Intensive Care, Amsterdam UMC, location 'AMC', Amsterdam, The Netherlands; ACHIEVE, Centre of Applied Research, Amsterdam University of Applied Sciences, Faculty of Health, Amsterdam, The Netherlands
| | - A S Neto
- Department of Intensive Care, Amsterdam UMC, location 'AMC', Amsterdam, The Netherlands; Australian and New Zealand Intensive Care Research Centre (ANZIC-RC), Monash University, Melbourne, Australia; Data Analytics Research and Evaluation (DARE) Centre, Austin Hospital, Melbourne, Australia; Department of Critical Care Medicine, Hospital Israelita Albert Einstein, Sao Paulo, Brazil
| | - M J Schultz
- Department of Intensive Care, Amsterdam UMC, location 'AMC', Amsterdam, The Netherlands; Department of Critical Care Medicine, Mahidol University, Bangkok, Thailand; Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
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13
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Martin DS, Shahid T, Gould DW, Richards-Belle A, Doidge JC, Camsooksai J, Charles WN, Davey M, Francis Johnson A, Garrett RM, Grocott MPW, Jones J, Lampro L, Miller L, O’Driscoll BR, Rostron AJ, Sadique Z, Szakmany T, Young PJ, Rowan KM, Harrison DA, Mouncey PR. Evaluating the clinical and cost-effectiveness of a conservative approach to oxygen therapy for invasively ventilated adults in intensive care: Protocol for the UK-ROX trial. J Intensive Care Soc 2024; 25:223-230. [PMID: 38737312 PMCID: PMC11086723 DOI: 10.1177/17511437241239880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024] Open
Abstract
Background In the United Kingdom, around 184,000 adults are admitted to an intensive care unit (ICU) each year with over 30% receiving mechanical ventilation. Oxygen is the commonest therapeutic intervention provided to these patients but it is unclear how much oxygen should be administered for the best clinical outcomes. Methods The UK-ROX trial will evaluate the clinical and cost-effectiveness of conservative oxygen therapy (the minimum oxygen concentration required to maintain an oxygen saturation of 90% ± 2%) versus usual oxygen therapy in critically ill adults receiving supplemental oxygen when invasively mechanically ventilated in ICUs in England, Wales and Northern Ireland. The trial will recruit 16,500 patients from approximately 100 UK adult ICUs. Using a deferred consent model, enrolled participants will be randomly allocated (1:1) to conservative or usual oxygen therapy until ICU discharge or 90 days after randomisation. Objectives The primary clinical outcome is all cause mortality at 90 days following randomisation. Discussion The UK-ROX trial has received ethical approval from the South Central - Oxford C Research Ethics Committee (Reference: 20/SC/0423) and the Confidentiality Advisory Group (Reference: 22/CAG/0154). The trial commenced in May 2021 and, at the time of publication, 95 sites had opened to recruitment.
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Affiliation(s)
- Daniel S Martin
- Peninsula Medical School, University of Plymouth, Plymouth, UK
- Intensive Care Unit, University Hospitals Plymouth NHS Trust, Plymouth, UK
| | - Tasnin Shahid
- Clinical Trials Unit, Intensive Care National Audit & Research Centre (ICNARC), Napier House, London, UK
| | - Doug W Gould
- Clinical Trials Unit, Intensive Care National Audit & Research Centre (ICNARC), Napier House, London, UK
| | - Alvin Richards-Belle
- Clinical Trials Unit, Intensive Care National Audit & Research Centre (ICNARC), Napier House, London, UK
| | - James C Doidge
- Clinical Trials Unit, Intensive Care National Audit & Research Centre (ICNARC), Napier House, London, UK
| | - Julie Camsooksai
- Clinical Trials Unit, Intensive Care National Audit & Research Centre (ICNARC), Napier House, London, UK
| | - Walton N Charles
- Clinical Trials Unit, Intensive Care National Audit & Research Centre (ICNARC), Napier House, London, UK
| | - Miriam Davey
- Critical Care, Maidstone and Tunbridge Wells NHS Foundation Trust, Kent, UK
| | - Amelia Francis Johnson
- Clinical Trials Unit, Intensive Care National Audit & Research Centre (ICNARC), Napier House, London, UK
| | | | - Michael PW Grocott
- Perioperative and Critical Care Theme, NIHR Southampton Biomedical Research Centre, University Hospital Southampton/University of Southampton, Southampton, UK
| | - Joanne Jones
- Critical Care, Maidstone and Tunbridge Wells NHS Foundation Trust, Kent, UK
| | - Lamprini Lampro
- Clinical Trials Unit, Intensive Care National Audit & Research Centre (ICNARC), Napier House, London, UK
| | - Lorna Miller
- Clinical Trials Unit, Intensive Care National Audit & Research Centre (ICNARC), Napier House, London, UK
| | - B Ronan O’Driscoll
- Respiratory Medicine, Northern Care Alliance NHS Foundation Trust, Salford Royal University Hospital, Salford, UK
| | - Anthony J Rostron
- Integrated Critical Care Unit, South Tyneside and Sunderland NHS Foundation Trust, Sunderland, UK
| | - Zia Sadique
- Department of Health Services Research and Policy, London School of Hygiene & Tropical Medicine, London, UK
| | - Tamas Szakmany
- Critical Care, Aneurin Bevan University Health Board, Cwmbran, UK
| | - Paul J Young
- Intensive Care Unit, Wellington Hospital, Wellington, New Zealand
- Medical Research Institute of New Zealand, Wellington, New Zealand
- Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
- Department of Critical Care, University of Melbourne, Melbourne, VIC, Australia
| | - Kathryn M Rowan
- Intensive Care Unit, University Hospitals Plymouth NHS Trust, Plymouth, UK
| | - David A Harrison
- Intensive Care Unit, University Hospitals Plymouth NHS Trust, Plymouth, UK
| | - Paul R Mouncey
- Intensive Care Unit, University Hospitals Plymouth NHS Trust, Plymouth, UK
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14
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Bluth T, Güldner A, Spieth PM. [Ventilation concepts under extracorporeal membrane oxygenation (ECMO) in acute respiratory distress syndrome (ARDS)]. DIE ANAESTHESIOLOGIE 2024; 73:352-362. [PMID: 38625538 DOI: 10.1007/s00101-024-01407-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Extracorporeal membrane oxygenation (ECMO) is often the last resort for escalation of treatment in patients with severe acute respiratory distress syndrome (ARDS). The success of treatment is mainly determined by patient-specific factors, such as age, comorbidities, duration and invasiveness of the pre-existing ventilation treatment as well as the expertise of the treating ECMO center. In particular, the adjustment of mechanical ventilation during ongoing ECMO treatment remains controversial. Although a reduction of invasiveness of mechanical ventilation seems to be reasonable due to physiological considerations, no improvement in outcome has been demonstrated so far for the use of ultraprotective ventilation regimens.
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Affiliation(s)
- Thomas Bluth
- Klinik für Anästhesiologie und Intensivtherapie, Universitätsklinikum Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland
| | - Andreas Güldner
- Klinik für Anästhesiologie und Intensivtherapie, Universitätsklinikum Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland
| | - Peter M Spieth
- Klinik für Anästhesiologie und Intensivtherapie, Universitätsklinikum Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland.
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15
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Becker AP, Mang S, Rixecker T, Lepper PM. [COVID-19 in the intensive care unit]. Pneumologie 2024; 78:330-345. [PMID: 38759701 DOI: 10.1055/a-1854-2693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2024]
Abstract
The acute respiratory failure as well as ARDS (acute respiratory distress syndrome) have challenged clinicians since the initial description over 50 years ago. Various causes can lead to ARDS and therapeutic approaches for ARDS/ARF are limited to the support or replacement of organ functions and the prevention of therapy-induced consequences. In recent years, triggered by the SARS-CoV-2 pathogen, numerous cases of acute lung failure (C-ARDS) have emerged. The pathophysiological processes of classical ARDS and C-ARDS are essentially similar. In their final stages of inflammation, both lead to a disruption of the blood-air barrier. Treatment strategies for C-ARDS, like classical ARDS, focus on supporting or replacing organ functions and preventing consequential damage. This article summarizes the treatment strategies in the intensive care unit.
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16
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Dumas G, Morris IS, Hensman T, Bagshaw SM, Demoule A, Ferreyro BL, Kouatchet A, Lemiale V, Mokart D, Pène F, Mehta S, Azoulay E, Munshi L. Association between arterial oxygen and mortality across critically ill patients with hematologic malignancies: results from an international collaborative network. Intensive Care Med 2024; 50:697-711. [PMID: 38598124 DOI: 10.1007/s00134-024-07389-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 03/09/2024] [Indexed: 04/11/2024]
Abstract
PURPOSE Patients with hematological malignancies are at high risk for life-threatening complications. To date, little attention has been paid to the impact of hyperoxemia and excess oxygen use on mortality. The aim of this study was to investigate the association between partial pressure of arterial oxygen (PaO2) and 28-day mortality in critically ill patients with hematologic malignancies. METHODS Data from three international cohorts (Europe, Canada, Oceania) of patients who received respiratory support (noninvasive ventilation, high-flow nasal cannula, invasive mechanical ventilation) were obtained. We used mixed-effect Cox models to investigate the association between day one PaO2 or excess oxygen use (inspired fraction of oxygen ≥ 0.6 with PaO2 > 100 mmHg) on day-28 mortality. RESULTS 11,249 patients were included. On day one, 5716 patients (50.8%) had normoxemia (60 ≤ PaO2 ≤ 100 mmHg), 1454 (12.9%) hypoxemia (PaO2 < 60 mmHg), and 4079 patients (36.3%) hyperoxemia (PaO2 > 100 mmHg). Excess oxygen was used in 2201 patients (20%). Crude day-28 mortality rate was 40.6%. There was a significant association between PaO2 and day-28 mortality with a U-shaped relationship (p < 0.001). Higher PaO2 levels (> 100 mmHg) were associated with day-28 mortality with a dose-effect relationship. Subgroup analyses showed an association between hyperoxemia and mortality in patients admitted with neurological disorders; however, the opposite relationship was seen across those admitted with sepsis and neutropenia. Excess oxygen use was also associated with subsequent day-28 mortality (adjusted hazard ratio (aHR) [95% confidence interval (CI)]: 1.11[1.04-1.19]). This result persisted after propensity score analysis (matched HR associated with excess oxygen:1.31 [1.20-1.1.44]). CONCLUSION In critically-ill patients with hematological malignancies, exposure to hyperoxemia and excess oxygen use were associated with increased mortality, with variable magnitude across subgroups. This might be a modifiable factor to improve mortality.
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Affiliation(s)
- Guillaume Dumas
- Interdepartmental Division of Critical Care Medicine, Sinai Health System/University Health Network, University of Toronto, Toronto, Canada
- Department of Medicine, Sinai Health System and University Health Network, Toronto, Canada
- Service de Médecine Intensive-Réanimation, CHU Grenoble-Alpes, Université Grenoble-Alpes, INSERM U1042-HP2, Grenoble, France
| | - Idunn S Morris
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
- Department of Medicine, Division of Respirology, University Health Network, Toronto, Canada
- Department of Physiology, University of Toronto, Toronto, Canada
- Department of Intensive Care Medicine, Nepean Hospital, Kingswood, NSW, Australia
| | - Tamishta Hensman
- Austin Health, Heidelberg, VIC, Australia
- Guys and St, Thomas' NHS Foundation Trust, London, UK
| | - Sean M Bagshaw
- Department of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta and Alberta Health Services, Edmonton, Canada
| | - Alexandre Demoule
- Service de Médecine Intensive Et Réanimation (Département R3S), Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, AP-HP, Groupe Hospitalier Universitaire APHP-Sorbonne Université, Site Pitié-Salpêtrière, 75013, Paris, France
| | - Bruno L Ferreyro
- Interdepartmental Division of Critical Care Medicine, Sinai Health System/University Health Network, University of Toronto, Toronto, Canada
- Department of Medicine, Sinai Health System and University Health Network, Toronto, Canada
| | - Achille Kouatchet
- Medical Intensive Care Unit, Angers Teaching Hospital, Angers, France
| | - Virginie Lemiale
- Medical Intensive Care Unit, Saint-Louis Teaching Hospital, AP-HP, Paris, France
- ECSTRA Team, Biostatistics and Clinical Epidemiology, UMR 1153 (Center of Epidemiology and Biostatistics Sorbonne Paris Cité, CRESS), INSERM, Université de Paris, Paris, France
| | - Djamel Mokart
- Intensive Care Unit, Institut Paoli Calmettes, Marseille, France
| | - Frédéric Pène
- Medical Intensive Care Unit, Cochin Hospital, Hôpitaux Universitaires Paris Centre, AP-HP, Paris, France
- Institut Cochin, INSERM Unité, 1016/Centre National de la Recherche Scientifique (CNRS) UnitéMixte de Recherche (UMR) 8104/Université Paris Cité, Paris, France
| | - Sangeeta Mehta
- Interdepartmental Division of Critical Care Medicine, Sinai Health System/University Health Network, University of Toronto, Toronto, Canada
- Department of Medicine, Sinai Health System and University Health Network, Toronto, Canada
| | - Elie Azoulay
- Medical Intensive Care Unit, Saint-Louis Teaching Hospital, AP-HP, Paris, France
- ECSTRA Team, Biostatistics and Clinical Epidemiology, UMR 1153 (Center of Epidemiology and Biostatistics Sorbonne Paris Cité, CRESS), INSERM, Université de Paris, Paris, France
| | - Laveena Munshi
- Interdepartmental Division of Critical Care Medicine, Sinai Health System/University Health Network, University of Toronto, Toronto, Canada.
- Department of Medicine, Sinai Health System and University Health Network, Toronto, Canada.
- 18-206 Mount Sinai Hospital, 600 University Avenue, Toronto, ON, M5G 1X5, Canada.
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17
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Li XY, Dai B, Hou HJ, Zhao HW, Wang W, Kang J, Tan W. Conservative versus liberal oxygen therapy for intensive care unit patients: meta-analysis of randomized controlled trials. Ann Intensive Care 2024; 14:68. [PMID: 38668955 PMCID: PMC11052962 DOI: 10.1186/s13613-024-01300-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 04/19/2024] [Indexed: 04/29/2024] Open
Abstract
BACKGROUND It remains unclear whether conservative oxygen therapy (COT) or liberal oxygen therapy (LOT) is more beneficial to the clinical outcomes of intensive care unit (ICU) patients. We systematically reviewed the efficacy and safety of conservative versus liberal oxygen therapy for ICU patients. METHODS We systematically searched PubMed, Embase, Web of Science, Scopus, Cochrane Central Register of Controlled Trials, ClinicalTrials.gov, MedRxiv, and BioRxiv for reports on randomized controlled trials (RCTs) that compared the effects of COT versus LOT on the clinical outcomes of ICU patients published in English before April 2024. The primary outcome was the mortality rate, secondary outcomes included ICU and hospital length of stay, days free from mechanical ventilation support (MVF), vasopressor-free time (VFT), and adverse events. RESULTS In all, 13 RCTs involving 10,632 patients were included in analyses. Meta-analysis showed COT did not reduce mortality at 30-day (risk ratio [RR] = 1.01, 95% confidence interval [CI] 0.94 to 1.09, I2 = 42%, P = 0.78), 90-day (RR = 1.01, 95% CI 0.95 to 1.08, I2 = 9%, P = 0.69), or longest follow-up (RR = 1.00, 95% CI 0.95 to 1.06, I2 = 22%, P = 0.95) compared to LOT in ICU patients. In subgroup analyses, no significant difference was observed between the two groups in terms of the different ICU, baseline P/F, and actual PaO2. In addition, COT did not affect ICU length of stay, hospital length of stay, or VFT, it only affected MVF days. CONCLUSIONS COT did not reduce all-cause mortality in ICU patients. Further RCTs are urgently needed to confirm the impact of COT strategy on specific populations.
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Affiliation(s)
- Xin-Yu Li
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of China Medical University, No.155, Nanjing North Street, Heping District, Shenyang, China
| | - Bing Dai
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of China Medical University, No.155, Nanjing North Street, Heping District, Shenyang, China
| | - Hai-Jia Hou
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of China Medical University, No.155, Nanjing North Street, Heping District, Shenyang, China
| | - Hong-Wen Zhao
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of China Medical University, No.155, Nanjing North Street, Heping District, Shenyang, China
| | - Wei Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of China Medical University, No.155, Nanjing North Street, Heping District, Shenyang, China
| | - Jian Kang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of China Medical University, No.155, Nanjing North Street, Heping District, Shenyang, China
| | - Wei Tan
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of China Medical University, No.155, Nanjing North Street, Heping District, Shenyang, China.
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18
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Buell KG, Spicer AB, Casey JD, Seitz KP, Qian ET, Graham Linck EJ, Self WH, Rice TW, Sinha P, Young PJ, Semler MW, Churpek MM. Individualized Treatment Effects of Oxygen Targets in Mechanically Ventilated Critically Ill Adults. JAMA 2024; 331:1195-1204. [PMID: 38501205 PMCID: PMC10951851 DOI: 10.1001/jama.2024.2933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 02/28/2024] [Indexed: 03/20/2024]
Abstract
Importance Among critically ill adults, randomized trials have not found oxygenation targets to affect outcomes overall. Whether the effects of oxygenation targets differ based on an individual's characteristics is unknown. Objective To determine whether an individual's characteristics modify the effect of lower vs higher peripheral oxygenation-saturation (Spo2) targets on mortality. Design, Setting, and Participants A machine learning model to predict the effect of treatment with a lower vs higher Spo2 target on mortality for individual patients was derived in the Pragmatic Investigation of Optimal Oxygen Targets (PILOT) trial and externally validated in the Intensive Care Unit Randomized Trial Comparing Two Approaches to Oxygen Therapy (ICU-ROX) trial. Critically ill adults received invasive mechanical ventilation in an intensive care unit (ICU) in the United States between July 2018 and August 2021 for PILOT (n = 1682) and in 21 ICUs in Australia and New Zealand between September 2015 and May 2018 for ICU-ROX (n = 965). Exposures Randomization to a lower vs higher Spo2 target group. Main Outcome and Measure 28-Day mortality. Results In the ICU-ROX validation cohort, the predicted effect of treatment with a lower vs higher Spo2 target for individual patients ranged from a 27.2% absolute reduction to a 34.4% absolute increase in 28-day mortality. For example, patients predicted to benefit from a lower Spo2 target had a higher prevalence of acute brain injury, whereas patients predicted to benefit from a higher Spo2 target had a higher prevalence of sepsis and abnormally elevated vital signs. Patients predicted to benefit from a lower Spo2 target experienced lower mortality when randomized to the lower Spo2 group, whereas patients predicted to benefit from a higher Spo2 target experienced lower mortality when randomized to the higher Spo2 group (likelihood ratio test for effect modification P = .02). The use of a Spo2 target predicted to be best for each patient, instead of the randomized Spo2 target, would have reduced the absolute overall mortality by 6.4% (95% CI, 1.9%-10.9%). Conclusion and relevance Oxygenation targets that are individualized using machine learning analyses of randomized trials may reduce mortality for critically ill adults. A prospective trial evaluating the use of individualized oxygenation targets is needed.
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Affiliation(s)
- Kevin G. Buell
- Division of Pulmonary and Critical Care, Department of Medicine, University of Chicago, Chicago, Illinois
| | - Alexandra B. Spicer
- Division of Pulmonary and Critical Care, Department of Medicine, University of Wisconsin-Madison, Madison
| | - Jonathan D. Casey
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Kevin P. Seitz
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Edward T. Qian
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Emma J. Graham Linck
- Division of Pulmonary and Critical Care, Department of Medicine, University of Wisconsin-Madison, Madison
| | - Wesley H. Self
- Department of Emergency Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
- Vanderbilt Institute for Clinical and Translational Research, Nashville, Tennessee
| | - Todd W. Rice
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
- Vanderbilt Institute for Clinical and Translational Research, Nashville, Tennessee
| | - Pratik Sinha
- Division of Clinical and Translational Research, Washington University School of Medicine, St Louis, Missouri
- Division of Critical Care, Department of Anesthesia, Washington University School of Medicine, St Louis, Missouri
| | - Paul J. Young
- Intensive Care Unit, Wellington Hospital, Wellington, New Zealand
- Medical Research Institute of New Zealand, Wellington, New Zealand
- Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, Victoria, Australia
- Department of Critical Care, University of Melbourne, Melbourne, Victoria, Australia
| | - Matthew W. Semler
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
- Vanderbilt Institute for Clinical and Translational Research, Nashville, Tennessee
| | - Matthew M. Churpek
- Division of Pulmonary and Critical Care, Department of Medicine, University of Wisconsin-Madison, Madison
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19
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Nielsen FM, Klitgaard TL, Siegemund M, Laake JH, Thormar KM, Cole JM, Aagaard SR, Bunzel AMG, Vestergaard SR, Langhoff PK, Pedersen CH, Hejlesen JØ, Abdelhamid S, Dietz A, Gebhard CE, Zellweger N, Hollinger A, Poulsen LM, Weihe S, Andersen-Ranberg NC, Pedersen UG, Mathiesen O, Andreasen AS, Brix H, Thomsen JJ, Petersen CH, Bestle MH, Wichmann S, Lund MS, Mortensen KM, Brand BA, Haase N, Iversen SA, Marcussen KV, Brøchner AC, Borup M, Grøfte T, Hildebrandt T, Kjær MBN, Engstrøm J, Lange T, Perner A, Schjørring OL, Rasmussen BS. Lower vs Higher Oxygenation Target and Days Alive Without Life Support in COVID-19: The HOT-COVID Randomized Clinical Trial. JAMA 2024; 331:1185-1194. [PMID: 38501214 PMCID: PMC10951852 DOI: 10.1001/jama.2024.2934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 02/28/2024] [Indexed: 03/20/2024]
Abstract
Importance Supplemental oxygen is ubiquitously used in patients with COVID-19 and severe hypoxemia, but a lower dose may be beneficial. Objective To assess the effects of targeting a Pao2 of 60 mm Hg vs 90 mm Hg in patients with COVID-19 and severe hypoxemia in the intensive care unit (ICU). Design, Setting, and Participants Multicenter randomized clinical trial including 726 adults with COVID-19 receiving at least 10 L/min of oxygen or mechanical ventilation in 11 ICUs in Europe from August 2020 to March 2023. The trial was prematurely stopped prior to outcome assessment due to slow enrollment. End of 90-day follow-up was June 1, 2023. Interventions Patients were randomized 1:1 to a Pao2 of 60 mm Hg (lower oxygenation group; n = 365) or 90 mm Hg (higher oxygenation group; n = 361) for up to 90 days in the ICU. Main Outcomes and Measures The primary outcome was the number of days alive without life support (mechanical ventilation, circulatory support, or kidney replacement therapy) at 90 days. Secondary outcomes included mortality, proportion of patients with serious adverse events, and number of days alive and out of hospital, all at 90 days. Results Of 726 randomized patients, primary outcome data were available for 697 (351 in the lower oxygenation group and 346 in the higher oxygenation group). Median age was 66 years, and 495 patients (68%) were male. At 90 days, the median number of days alive without life support was 80.0 days (IQR, 9.0-89.0 days) in the lower oxygenation group and 72.0 days (IQR, 2.0-88.0 days) in the higher oxygenation group (P = .009 by van Elteren test; supplemental bootstrapped adjusted mean difference, 5.8 days [95% CI, 0.2-11.5 days]; P = .04). Mortality at 90 days was 30.2% in the lower oxygenation group and 34.7% in the higher oxygenation group (risk ratio, 0.86 [98.6% CI, 0.66-1.13]; P = .18). There were no statistically significant differences in proportion of patients with serious adverse events or in number of days alive and out of hospital. Conclusion and Relevance In adult ICU patients with COVID-19 and severe hypoxemia, targeting a Pao2 of 60 mm Hg resulted in more days alive without life support in 90 days than targeting a Pao2 of 90 mm Hg. Trial Registration ClinicalTrials.gov Identifier: NCT04425031.
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Affiliation(s)
- Frederik M. Nielsen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Thomas L. Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Martin Siegemund
- Department of Intensive Care and Department of Clinical Research, Basel University Hospital, Basel, Switzerland
| | - Jon H. Laake
- Department of Anaesthesia and Intensive Care, Division of Emergencies and Critical Care, Rikshospitalet Medical Centre, Oslo University Hospital, Oslo, Norway
| | - Katrin M. Thormar
- Department of Anesthesia and Intensive Care, Landspitali, University Hospital of Reykjavik, Reykjavik, Iceland
| | - Jade M. Cole
- Department of Intensive Care, Cardiff University Hospital of Wales, Cardiff, Wales
| | - Søren R. Aagaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Anne-Marie G. Bunzel
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Stine R. Vestergaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Peter K. Langhoff
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Caroline H. Pedersen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Josefine Ø. Hejlesen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Salim Abdelhamid
- Department of Intensive Care and Department of Clinical Research, Basel University Hospital, Basel, Switzerland
| | - Anna Dietz
- Department of Intensive Care and Department of Clinical Research, Basel University Hospital, Basel, Switzerland
| | - Caroline E. Gebhard
- Department of Intensive Care and Department of Clinical Research, Basel University Hospital, Basel, Switzerland
| | - Nuria Zellweger
- Department of Intensive Care and Department of Clinical Research, Basel University Hospital, Basel, Switzerland
| | - Alexa Hollinger
- Department of Intensive Care and Department of Clinical Research, Basel University Hospital, Basel, Switzerland
| | - Lone M. Poulsen
- Department of Anaesthesia and Intensive Care, Zealand University Hospital, Køge, Denmark
| | - Sarah Weihe
- Department of Anaesthesia and Intensive Care, Zealand University Hospital, Køge, Denmark
| | | | - Ulf G. Pedersen
- Department of Anaesthesia and Intensive Care, Zealand University Hospital, Køge, Denmark
| | - Ole Mathiesen
- Department of Anaesthesia and Intensive Care, Zealand University Hospital, Køge, Denmark
| | - Anne Sofie Andreasen
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital, Herlev, Denmark
| | - Helene Brix
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital, Herlev, Denmark
| | - Jonas J. Thomsen
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital, Herlev, Denmark
| | - Christina H. Petersen
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital, Herlev, Denmark
| | - Morten H. Bestle
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital, North Zealand, Hillerød, Denmark
| | - Sine Wichmann
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital, North Zealand, Hillerød, Denmark
| | - Martin S. Lund
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital, North Zealand, Hillerød, Denmark
| | - Karoline M. Mortensen
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital, North Zealand, Hillerød, Denmark
| | - Björn A. Brand
- Department of Intensive Care, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Nicolai Haase
- Department of Intensive Care, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Susanne A. Iversen
- Department of Anaesthesia and Intensive Care, Slagelse Hospital, Slagelse, Denmark
| | - Klaus V. Marcussen
- Department of Anaesthesia and Intensive Care, Slagelse Hospital, Slagelse, Denmark
| | - Anne C. Brøchner
- Department of Anaesthesia and Intensive Care, Kolding Hospital, Kolding, Denmark
| | - Morten Borup
- Department of Anaesthesia and Intensive Care, Kolding Hospital, Kolding, Denmark
| | - Thorbjørn Grøfte
- Department of Anaesthesia and Intensive Care, Randers Hospital, Randers, Denmark
| | - Thomas Hildebrandt
- Department of Anaesthesia and Intensive Care, Zealand University Hospital, Roskilde, Denmark
| | - Maj-Brit N. Kjær
- Department of Intensive Care, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Janus Engstrøm
- Copenhagen Trial Unit, Centre for Clinical Intervention, Capital Region, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Theis Lange
- Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark
| | - Anders Perner
- Department of Intensive Care, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Olav L. Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Bodil S. Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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20
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Schwartzstein RM. Oxygen Supplementation in COVID-19-How Much Is Enough? JAMA 2024; 331:1177-1178. [PMID: 38501210 DOI: 10.1001/jama.2024.2935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Affiliation(s)
- Richard M Schwartzstein
- Division of Pulmonary, Critical Care, and Sleep Medicine, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, Massachusetts
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21
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Crescioli E, Riis JØ, Weinreich UM, Jensen JUS, Poulsen LM, Brøchner AC, Lange T, Perner A, Klitgaard TL, Schjørring OL, Rasmussen BS. Long-term cognitive and pulmonary functions following a lower versus a higher oxygenation target in the HOT-ICU and HOT-COVID trials: A protocol update. Acta Anaesthesiol Scand 2024; 68:575-578. [PMID: 38272985 DOI: 10.1111/aas.14379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 01/15/2024] [Indexed: 01/27/2024]
Abstract
BACKGROUND The Handling Oxygenation Targets in the Intensive Care Unit (HOT-ICU) trial was a multicentre, randomised, parallel-group trial of a lower oxygenation target (arterial partial pressure of oxygen [PaO2 ] = 8 kPa) versus a higher oxygenation target (PaO2 = 12 kPa) in adult ICU patients with acute hypoxaemic respiratory failure; the Handling Oxygenation Targets in coronavirus disease 2019 (HOT-COVID) tested the same oxygenation targets in patients with confirmed COVID-19. In this study, we aim to evaluate the long-term effects of these oxygenation targets on cognitive and pulmonary function. We hypothesise that a lower oxygenation target throughout the ICU stay may result in cognitive impairment, whereas a higher oxygenation target may result in impaired pulmonary function. METHODS This is the updated protocol and statistical analysis plan of two pre-planned secondary outcomes, the long-term cognitive function, and long-term pulmonary function, in the HOT-ICU and HOT-COVID trials. Patients enrolled in both trials at selected Danish sites and surviving to 1 year after randomisation are eligible to participate. A Repeatable Battery for the Assessment of Neuropsychological Status score and a full-body plethysmography, including diffusion capacity for carbon monoxide, will be obtained. The last patient is expected to be included in the spring of 2024. CONCLUSION This study will provide important information on the long-term effects of a lower versus a higher oxygenation target on long-term cognitive and pulmonary functions in adult ICU patients with acute hypoxaemic respiratory failure.
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Affiliation(s)
- Elena Crescioli
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Jens Østergaard Riis
- Department of Neurology and Neurosurgery, Aalborg University Hospital, Aalborg, Denmark
| | - Ulla Møller Weinreich
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Department of Respiratory Medicine, Aalborg University Hospital, Aalborg, Denmark
| | - Jens Ulrik Staehr Jensen
- Section of Respiratory Medicine, Department of Medicine, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | | | - Anne Craveiro Brøchner
- Department of Anaesthesia and Intensive Care, Kolding Hospital, University of Southern Denmark, Kolding, Denmark
| | - Theis Lange
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Anders Perner
- Department of Intensive Care, Rigshospitalet, Copenhagen, Denmark
| | - Thomas Lass Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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22
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Robba C, Battaglini D, Cinotti R, Asehnoune K, Stevens R, Taccone FS, Badenes R, Pelosi P. Individualized Thresholds of Hypoxemia and Hyperoxemia and their Effect on Outcome in Acute Brain Injured Patients: A Secondary Analysis of the ENIO Study. Neurocrit Care 2024; 40:515-528. [PMID: 37322325 DOI: 10.1007/s12028-023-01761-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 05/16/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND In acute brain injury (ABI), the effects of hypoxemia as a potential cause of secondary brain damage and poor outcome are well documented, whereas the impact of hyperoxemia is unclear. The primary aim of this study was to assess the episodes of hypoxemia and hyperoxemia in patients with ABI during the intensive care unit (ICU) stay and to determine their association with in-hospital mortality. The secondary aim was to identify the optimal thresholds of arterial partial pressure of oxygen (PaO2) predicting in-hospital mortality. METHODS We conducted a secondary analysis of a prospective multicenter observational cohort study. Adult patients with ABI (traumatic brain injury, subarachnoid aneurysmal hemorrhage, intracranial hemorrhage, ischemic stroke) with available data on PaO2 during the ICU stay were included. Hypoxemia was defined as PaO2 < 80 mm Hg, normoxemia was defined as PaO2 between 80 and 120 mm Hg, mild/moderate hyperoxemia was defined as PaO2 between 121 and 299 mm Hg, and severe hyperoxemia was defined as PaO2 levels ≥ 300 mm Hg. RESULTS A total of 1,407 patients were included in this study. The mean age was 52 (±18) years, and 929 (66%) were male. Over the ICU stay, the fractions of patients in the study cohort who had at least one episode of hypoxemia, mild/moderate hyperoxemia, and severe hyperoxemia were 31.3%, 53.0%, and 1.7%, respectively. PaO2 values below 92 mm Hg and above 156 mm Hg were associated with an increased probability of in-hospital mortality. Differences were observed among subgroups of patients with ABI, with consistent effects only seen in patients without traumatic brain injury. CONCLUSIONS In patients with ABI, hypoxemia and mild/moderate hyperoxemia were relatively frequent. Hypoxemia and hyperoxemia during ICU stay may influence in-hospital mortality. However, the small number of oxygen values collected represents a major limitation of the study.
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Affiliation(s)
- Chiara Robba
- IRCCS Ospedale Policlinico San Martino, Genova, Italy
- Department of Surgical Science and Integrated Diagnostic, University of Genova, Genova, Italy
| | | | - Raphael Cinotti
- Department of Anesthesia and Critical Care, CHU Nantes, Nantes Université, Hôtel Dieu, Nantes, France
- UMR 1246 SPHERE Methods in Patients-Centered Outcomes and Health Research, University of Nantes, University of Tours, INSERM, Nantes, France
| | - Karim Asehnoune
- Department of Anesthesia and Critical Care, CHU Nantes, Nantes Université, Hôtel Dieu, Nantes, France
| | - Robert Stevens
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Fabio Silvio Taccone
- Department of Intensive Care, Hôpital Universitaire de Bruxelles, Brussels, Belgium
| | - Rafael Badenes
- Anesthesiology and Surgical-Trauma Intensive Care, University Clinic Hospital, Valencia, Spain
- Department of Surgery, University of Valencia, Valencia, Spain
- INCLIVA Research Medical Institute, Valencia, Spain
| | - Paolo Pelosi
- IRCCS Ospedale Policlinico San Martino, Genova, Italy
- Department of Surgical Science and Integrated Diagnostic, University of Genova, Genova, Italy
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23
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Szafran JC, Patel BK. Invasive Mechanical Ventilation. Crit Care Clin 2024; 40:255-273. [PMID: 38432695 DOI: 10.1016/j.ccc.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
Invasive mechanical ventilation allows clinicians to support gas exchange and work of breathing in patients with respiratory failure. However, there is also potential for iatrogenesis. By understanding the benefits and limitations of different modes of ventilation and goals for gas exchange, clinicians can choose a strategy that provides appropriate support while minimizing harm. The ventilator can also provide crucial diagnostic information in the form of respiratory mechanics. These, and the mechanical ventilation strategy, should be regularly reassessed.
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Affiliation(s)
- Jennifer C Szafran
- Department of Medicine, Section of Pulmonary and Critical Care, University of Chicago, 5841 South Maryland Avenue, Chicago, IL 60637, USA.
| | - Bhakti K Patel
- Department of Medicine, Section of Pulmonary and Critical Care, University of Chicago, 5841 South Maryland Avenue, Chicago, IL 60637, USA
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24
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Ziaka M, Exadaktylos A. Pathophysiology of acute lung injury in patients with acute brain injury: the triple-hit hypothesis. Crit Care 2024; 28:71. [PMID: 38454447 PMCID: PMC10918982 DOI: 10.1186/s13054-024-04855-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Accepted: 03/01/2024] [Indexed: 03/09/2024] Open
Abstract
It has been convincingly demonstrated in recent years that isolated acute brain injury (ABI) may cause severe dysfunction of peripheral extracranial organs and systems. Of all potential target organs and systems, the lung appears to be the most vulnerable to damage after ABI. The pathophysiology of the bidirectional brain-lung interactions is multifactorial and involves inflammatory cascades, immune suppression, and dysfunction of the autonomic system. Indeed, the systemic effects of inflammatory mediators in patients with ABI create a systemic inflammatory environment ("first hit") that makes extracranial organs vulnerable to secondary procedures that enhance inflammation, such as mechanical ventilation (MV), surgery, and infections ("second hit"). Moreover, accumulating evidence supports the knowledge that gut microbiota constitutes a critical superorganism and an organ on its own, potentially modifying various physiological functions of the host. Furthermore, experimental and clinical data suggest the existence of a communication network among the brain, gastrointestinal tract, and its microbiome, which appears to regulate immune responses, gastrointestinal function, brain function, behavior, and stress responses, also named the "gut-microbiome-brain axis." Additionally, recent research evidence has highlighted a crucial interplay between the intestinal microbiota and the lungs, referred to as the "gut-lung axis," in which alterations during critical illness could result in bacterial translocation, sustained inflammation, lung injury, and pulmonary fibrosis. In the present work, we aimed to further elucidate the pathophysiology of acute lung injury (ALI) in patients with ABI by attempting to develop the "double-hit" theory, proposing the "triple-hit" hypothesis, focused on the influence of the gut-lung axis on the lung. Particularly, we propose, in addition to sympathetic hyperactivity, blast theory, and double-hit theory, that dysbiosis and intestinal dysfunction in the context of ABI alter the gut-lung axis, resulting in the development or further aggravation of existing ALI, which constitutes the "third hit."
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Affiliation(s)
- Mairi Ziaka
- Clinic for Geriatric Medicine, Center for Geriatric Medicine and Rehabilitation, Kantonsspital Baselland, Bruderholz, Switzerland.
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, Bern, Switzerland.
| | - Aristomenis Exadaktylos
- Department of Emergency Medicine, Inselspital, University Hospital, University of Bern, Bern, Switzerland
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25
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da Silva PB, Fernandes SES, Gomes M, da Silveira CDG, Amorim FFP, de Aquino Carvalho AL, Shintaku LS, Miazato LY, Amorim FFP, Maia MDO, Neves FDAR, Amorim FF. Hyperoxemia Induced by Oxygen Therapy in Nonsurgical Critically Ill Patients. Am J Crit Care 2024; 33:82-92. [PMID: 38424024 DOI: 10.4037/ajcc2024723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
BACKGROUND Hyperoxemia, often overlooked in critically ill patients, is common and may have adverse consequences. OBJECTIVE To evaluate the incidence of hyperoxemia induced by oxygen therapy in nonsurgical critically ill patients at intensive care unit (ICU) admission and the association of hyperoxemia with hospital mortality. METHODS This prospective cohort study included all consecutive admissions of nonsurgical patients aged 18 years or older who received oxygen therapy on admission to the Hospital Santa Luzia Rede D'Or São Luiz adult ICU from July 2018 through June 2021. Patients were categorized into 3 groups according to Pao2 level at ICU admission: hypoxemia (Pao2<60 mm Hg), normoxemia (Pao2= 60-120 mm Hg), and hyperoxemia (Pao2 >120 mm Hg). RESULTS Among 3088 patients, hyperoxemia was present in 1174 (38.0%) and was independently associated with hospital mortality (odds ratio [OR], 1.32; 95% CI, 1.04-1.67; P=.02). Age (OR, 1.02; 95% CI, 1.02-1.02; P<.001) and chronic kidney disease (OR, 1.55; 95% CI, 1.02-2.36; P=.04) were associated with a higher rate of hyperoxemia. Factors associated with a lower rate of hyperoxemia were Sequential Organ Failure Assessment score (OR, 0.88; 95% CI, 0.83-0.93; P<.001); late-night admission (OR, 0.80; 95% CI, 0.67-0.96; P=.02); and renal/metabolic (OR, 0.22; 95% CI, 0.13-1.39; P<.001), neurologic (OR, 0.02; 95% CI, 0.01-0.05; P<.001), digestive (OR, 0.23; 95% CI, 0.13-0.41; P<.001), and soft tissue/skin/orthopedic (OR, 0.32; 95% CI, 0.13-0.79; P=.01) primary reasons for hospital admission. CONCLUSION Hyperoxemia induced by oxygen therapy was common in critically ill patients and was linked to increased risk of hospital mortality. Health care professionals should be aware of this condition because of its potential risks and unnecessary costs.
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Affiliation(s)
- Priscilla Barbosa da Silva
- Priscilla Barbosa da Silva is a master's student, Graduate Program in Health Sciences, Escola Superior de Ciências da Saúde (ESCS), Brasília, Federal District, Brazil, and a staff nurse, intensive care unit, Hospital Santa Luzia Rede D'Or São Luiz, Brasília
| | | | - Maura Gomes
- Maura Gomes is a staff nurse, intensive care unit, Hospital Santa Luzia Rede D'Or São Luiz
| | - Carlos Darwin Gomes da Silveira
- Carlos Darwin Gomes da Silveira is a professor, Medical School, ESCS, and a professor, Medical School, Centro Universitário do Planalto Central, Brasília
| | - Flávio Ferreira Pontes Amorim
- Flávio Ferreira Pontes Amorim is an undergraduate student, Medical School, Universidade Católica de Brasília, Brasília
| | - André Luiz de Aquino Carvalho
- André Luiz de Aquino Carvalho is a master's student, Graduate Program in Health Sciences, ESCS, and a professor, Medical School, ESCS
| | | | | | | | - Marcelo de Oliveira Maia
- Marcelo de Oliveira Maia is a master's student, Graduate Program in Health Sciences, ESCS, and an intensivist, intensive care unit, Hospital Santa Luzia Rede D'Or São Luiz
| | | | - Fábio Ferreira Amorim
- Fábio Ferreira Amorim is a professor, Graduate Program in Health Sciences, ESCS, and a professor, Graduate Program in Health Sciences, Universidade de Brasília
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26
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Zheng Y, Li Y, Li M, Wang R, Jiang Y, Zhao M, Lu J, Li R, Li X, Shi S. COVID-19 cooling: Nanostrategies targeting cytokine storm for controlling severe and critical symptoms. Med Res Rev 2024; 44:738-811. [PMID: 37990647 DOI: 10.1002/med.21997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 08/16/2023] [Accepted: 10/29/2023] [Indexed: 11/23/2023]
Abstract
As severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants continue to wreak havoc worldwide, the "Cytokine Storm" (CS, also known as the inflammatory storm) or Cytokine Release Syndrome has reemerged in the public consciousness. CS is a significant contributor to the deterioration of infected individuals. Therefore, CS control is of great significance for the treatment of critically ill patients and the reduction of mortality rates. With the occurrence of variants, concerns regarding the efficacy of vaccines and antiviral drugs with a broad spectrum have grown. We should make an effort to modernize treatment strategies to address the challenges posed by mutations. Thus, in addition to the requirement for additional clinical data to monitor the long-term effects of vaccines and broad-spectrum antiviral drugs, we can use CS as an entry point and therapeutic target to alleviate the severity of the disease in patients. To effectively combat the mutation, new technologies for neutralizing or controlling CS must be developed. In recent years, nanotechnology has been widely applied in the biomedical field, opening up a plethora of opportunities for CS. Here, we put forward the view of cytokine storm as a therapeutic target can be used to treat critically ill patients by expounding the relationship between coronavirus disease 2019 (COVID-19) and CS and the mechanisms associated with CS. We pay special attention to the representative strategies of nanomaterials in current neutral and CS research, as well as their potential chemical design and principles. We hope that the nanostrategies described in this review provide attractive treatment options for severe and critical COVID-19 caused by CS.
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Affiliation(s)
- Yu Zheng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuke Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Mao Li
- Health Management Centre, Clinical Medical College & Affiliated Hospital of Chengdu University, Chengdu University, Chengdu, China
| | - Rujing Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuhong Jiang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Mengnan Zhao
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jun Lu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Rui Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaofang Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Sanjun Shi
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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27
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Granholm A, Lange T, Harhay MO, Jensen AKG, Perner A, Møller MH, Kaas-Hansen BS. Effects of duration of follow-up and lag in data collection on the performance of adaptive clinical trials. Pharm Stat 2024; 23:138-150. [PMID: 37837271 PMCID: PMC10935606 DOI: 10.1002/pst.2342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 08/07/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023]
Abstract
Different combined outcome-data lags (follow-up durations plus data-collection lags) may affect the performance of adaptive clinical trial designs. We assessed the influence of different outcome-data lags (0-105 days) on the performance of various multi-stage, adaptive trial designs (2/4 arms, with/without a common control, fixed/response-adaptive randomisation) with undesirable binary outcomes according to different inclusion rates (3.33/6.67/10 patients/day) under scenarios with no, small, and large differences. Simulations were conducted under a Bayesian framework, with constant stopping thresholds for superiority/inferiority calibrated to keep type-1 error rates at approximately 5%. We assessed multiple performance metrics, including mean sample sizes, event counts/probabilities, probabilities of conclusiveness, root mean squared errors (RMSEs) of the estimated effect in the selected arms, and RMSEs between the analyses at the time of stopping and the final analyses including data from all randomised patients. Performance metrics generally deteriorated when the proportions of randomised patients with available data were smaller due to longer outcome-data lags or faster inclusion, that is, mean sample sizes, event counts/probabilities, and RMSEs were larger, while the probabilities of conclusiveness were lower. Performance metric impairments with outcome-data lags ≤45 days were relatively smaller compared to those occurring with ≥60 days of lag. For most metrics, the effects of different outcome-data lags and lower proportions of randomised patients with available data were larger than those of different design choices, for example, the use of fixed versus response-adaptive randomisation. Increased outcome-data lag substantially affected the performance of adaptive trial designs. Trialists should consider the effects of outcome-data lags when planning adaptive trials.
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Affiliation(s)
- Anders Granholm
- Department of Intensive Care 4131, Copenhagen University
Hospital – Rigshospitalet, Copenhagen, Denmark
| | - Theis Lange
- Section of Biostatistics, Department of Public Health,
University of Copenhagen, Copenhagen, Denmark
| | - Michael O. Harhay
- Clinical Trials Methods and Outcomes Lab, PAIR (Palliative
and Advanced Illness Research) Center, Perelman School of Medicine, University of
Pennsylvania, Philadelphia, USA
- Department of Biostatistics, Epidemiology, and Informatics,
Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Aksel Karl Georg Jensen
- Section of Biostatistics, Department of Public Health,
University of Copenhagen, Copenhagen, Denmark
| | - Anders Perner
- Department of Intensive Care 4131, Copenhagen University
Hospital – Rigshospitalet, Copenhagen, Denmark
| | - Morten Hylander Møller
- Department of Intensive Care 4131, Copenhagen University
Hospital – Rigshospitalet, Copenhagen, Denmark
| | - Benjamin Skov Kaas-Hansen
- Department of Intensive Care 4131, Copenhagen University
Hospital – Rigshospitalet, Copenhagen, Denmark
- Section of Biostatistics, Department of Public Health,
University of Copenhagen, Copenhagen, Denmark
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28
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Dai N, Gu J, Luo Y, Tao Y, Chou Y, He Y, Qin H, Chen T, Fu X, Chen M, Xing Z. Impact of hyperoxia on the gut during critical illnesses. Crit Care 2024; 28:66. [PMID: 38429791 PMCID: PMC10905909 DOI: 10.1186/s13054-024-04848-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/22/2024] [Indexed: 03/03/2024] Open
Abstract
Molecular oxygen is typically delivered to patients via oxygen inhalation or extracorporeal membrane oxygenation (ECMO), potentially resulting in systemic hyperoxia from liberal oxygen inhalation or localized hyperoxia in the lower body from peripheral venoarterial (VA) ECMO. Consequently, this exposes the gastrointestinal tract to excessive oxygen levels. Hyperoxia can trigger organ damage due to the overproduction of reactive oxygen species and is associated with increased mortality. The gut and gut microbiome play pivotal roles in critical illnesses and even small variations in oxygen levels can have a dramatic influence on the physiology and ecology of gut microbes. Here, we reviewed the emerging preclinical evidence which highlights how excessive inhaled oxygen can provoke diffuse villous damage, barrier dysfunction in the gut, and gut dysbiosis. The hallmark of this dysbiosis includes the expansion of oxygen-tolerant pathogens (e.g., Enterobacteriaceae) and the depletion of beneficial oxygen-intolerant microbes (e.g., Muribaculaceae). Furthermore, we discussed potential impact of oxygen on the gut in various underlying critical illnesses involving inspiratory oxygen and peripheral VA-ECMO. Currently, the available findings in this area are somewhat controversial, and a consensus has not yet to be reached. It appears that targeting near-physiological oxygenation levels may offer a means to avoid hyperoxia-induced gut injury and hypoxia-induced mesenteric ischemia. However, the optimal oxygenation target may vary depending on special clinical conditions, including acute hypoxia in adults and neonates, as well as particular patients undergoing gastrointestinal surgery or VA-ECMO support. Last, we outlined the current challenges and the need for future studies in this area. Insights into this vital ongoing research can assist clinicians in optimizing oxygenation for critically ill patients.
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Affiliation(s)
- Ninan Dai
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Juan Gu
- Department of Pharmacy, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Clinical Sciences, Malmö, Section for Surgery, Lund University, 214 28, Malmö, Sweden
| | - Yanhong Luo
- First Clinical College, Zunyi Medical University, Zunyi, China
| | - Yuanfa Tao
- Department of Pancreatic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuehting Chou
- Department of Cardiopulmonary Bypass, Wuhan Asian Heart Hospital, Wuhan, China
| | - Ying He
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Han Qin
- Department of Respiratory and Critical Care Medicine, Kweichow Moutai Hospital, Guizhou Province, Zunyi, China
| | - Tao Chen
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Xiaoyun Fu
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
| | - Miao Chen
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
| | - Zhouxiong Xing
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
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29
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Møller MH, Granholm A, Al Duhailib Z, Alhazzani W, Belley-Cote E, Oczkowski S, Vijayaraghavan BKT, Sjövall F, Butler E, Zampieri FG, Mac Sweeney R, Derde LPG, Ruzycki-Chadwick A, Mer M, Burns KEA, Ergan B, Al-Fares A, Sjoding MW, Valley TS, Rasmussen BS, Schjørring OL, Prescott HC. Higher versus lower oxygenation targets in adult ICU patients: A rapid practice guideline. Acta Anaesthesiol Scand 2024; 68:302-310. [PMID: 38140827 DOI: 10.1111/aas.14366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/17/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023]
Abstract
The aim of this Intensive Care Medicine Rapid Practice Guideline (ICM-RPG) was to provide evidence-based clinical guidance about the use of higher versus lower oxygenation targets for adult patients in the intensive care unit (ICU). The guideline panel comprised 27 international panelists, including content experts, ICU clinicians, methodologists, and patient representatives. We adhered to the methodology for trustworthy clinical practice guidelines, including the use of the Grading of Recommendations Assessment, Development, and Evaluation approach to assess the certainty of evidence, and used the Evidence-to-Decision framework to generate recommendations. A recently published updated systematic review and meta-analysis constituted the evidence base. Through teleconferences and web-based discussions, the panel provided input on the balance and magnitude of the desirable and undesirable effects, the certainty of evidence, patients' values and preferences, costs and resources, equity, feasibility, acceptability, and research priorities. The updated systematic review and meta-analysis included data from 17 randomized clinical trials with 10,248 participants. There was little to no difference between the use of higher versus lower oxygenation targets for all outcomes with available data, including all-cause mortality, serious adverse events, stroke, functional outcomes, cognition, and health-related quality of life (very low certainty of evidence). The panel felt that values and preferences, costs and resources, and equity favored the use of lower oxygenation targets. The ICM-RPG panel issued one conditional recommendation against the use of higher oxygenation targets: "We suggest against the routine use of higher oxygenation targets in adult ICU patients (conditional recommendation, very low certainty of evidence). Remark: an oxygenation target of SpO2 88%-92% or PaO2 8 kPa/60 mmHg is relevant and safe for most adult ICU patients."
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Affiliation(s)
- Morten Hylander Møller
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Guidelines in Intensive Care Medicine, Development and Evaluation (GUIDE) Group, Hamilton, Canada
| | - Anders Granholm
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Guidelines in Intensive Care Medicine, Development and Evaluation (GUIDE) Group, Hamilton, Canada
| | - Zainab Al Duhailib
- Guidelines in Intensive Care Medicine, Development and Evaluation (GUIDE) Group, Hamilton, Canada
- Critical Care Medicine Department, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Waleed Alhazzani
- Guidelines in Intensive Care Medicine, Development and Evaluation (GUIDE) Group, Hamilton, Canada
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Department of Critical Care, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Research Institute of St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada
| | - Emilie Belley-Cote
- Guidelines in Intensive Care Medicine, Development and Evaluation (GUIDE) Group, Hamilton, Canada
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Population Health Research Institute, Hamilton, Ontario, Canada
| | - Simon Oczkowski
- Guidelines in Intensive Care Medicine, Development and Evaluation (GUIDE) Group, Hamilton, Canada
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | | | - Fredrik Sjövall
- Department for Intensive and Perioperative Care, Skane University Hospital, Malmö, Sweden
- Department for Clinical sciences, Lund University, Lund, Sweden
| | - Ethan Butler
- Department of Intensive Care, Royal North Shore Hospital, Sydney, New South Wales, Australia
- Northern Clinical School, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Fernando G Zampieri
- Department of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
- Alberta Health Services, Edmonton, Alberta, Canada
| | - Rob Mac Sweeney
- Regional Intensive Care Unit, Royal Victoria Hospital, Belfast, UK
| | - Lennie P G Derde
- Intensive Care Center, Division Vital Functions, University Medical Center Utrecht, Utrecht, the Netherlands
- Julius Center for Health Sciences and Primary Care, Utrecht, the Netherlands
| | - Ally Ruzycki-Chadwick
- Department of Respiratory Therapy General Site, Hamilton Health Sciences, Hamilton, Ontario, Canada
| | - Mervyn Mer
- Department of Medicine, Divisions of Critical Care and Pulmonology, Charlotte Maxeke Johannesburg Academic Hospital and Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Karen E A Burns
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Interdepartmental Division of Critical Care, University of Toronto, Toronto, Ontario, Canada
- Li Ka Shing Knowledge Institute, Unity Health Toronto-St. Michael's Hospital, Toronto, Ontario, Canada
| | - Begüm Ergan
- Department of Pulmonary and Critical Care, Dokuz Eylül University Faculty of Medicine, İzmir, Turkey
| | - Abdulrahman Al-Fares
- Department of Anesthesia, Critical Care Medicine and Pain Medicine, Al-Amiri Hospital, Minister of Health, Kuwait City, Kuwait
- Kuwait Extracorporeal Life Support Program, Al-Amiri Center for Advance Respiratory and Cardiac Failure, Ministry of Health, Kuwait City, Kuwait
| | - Michael W Sjoding
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Thomas S Valley
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
- VA Center for Clinical Management Research, Ann Arbor, Michigan, USA
| | - Bodil S Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Olav L Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Hallie C Prescott
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
- VA Center for Clinical Management Research, Ann Arbor, Michigan, USA
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30
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O'Driscoll BR, Kirton L, Weatherall M, Bakerly ND, Turkington P, Cook J, Beasley R. Effect of a lower target oxygen saturation range on the risk of hypoxaemia and elevated NEWS2 scores at a university hospital: a retrospective study. BMJ Open Respir Res 2024; 11:e002019. [PMID: 38423953 PMCID: PMC10910590 DOI: 10.1136/bmjresp-2023-002019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 02/09/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND The optimal target oxygen saturation (SpO2) range for hospital inpatients not at risk of hypercapnia is unknown. The objective of this study was to assess the impact on oxygen usage and National Early Warning Score 2 (NEWS2) of changing the standard SpO2 target range from 94-98% to 92-96%. METHODS In a metropolitan UK hospital, a database of electronic bedside SpO2 measurements, oxygen prescriptions and NEWS2 records was reviewed. Logistic regression was used to compare the proportion of hypoxaemic SpO2 values (<90%) and NEWS2 records ≥5 in 2019, when the target SpO2 range was 94-98%; with 2022, when the target range was 92-96%. RESULTS In 2019, 218 of 224 936 (0.10%) observations on room air and 162 of 11 328 (1.43%) on oxygen recorded an SpO2 <90%, and in 2022, 251 of 225 970 (0.11%) and 233 of 12 845 (1.81%), respectively (risk difference 0.04%, 95% CI 0.02% to 0.07%). NEWS2 ≥5 was observed in 3009 of 236 264 (1.27%) observations in 2019 and 4061 of 238 815 (1.70%) in 2022 (risk difference 0.43%, 0.36% to 0.50%; p<0.001). The proportion of patients using supplemental oxygen with hyperoxaemia (SpO2 100%) was 5.4% in 2019 and 3.9% in 2022 (OR 0.71, 0.63 to 0.81; p<0.001). DISCUSSION The proportion of observations with SpO2 <90% or NEWS2 ≥5 was greater with the 92-96% range; however, absolute differences were very small and of doubtful clinical relevance, in contrast to hyperoxaemia for which the proportion was markedly less in 2022. These findings support proposals that the British Thoracic Society oxygen guidelines could recommend a lower target SpO2 range.
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Affiliation(s)
- B Ronan O'Driscoll
- Northern Care Alliance NHS Foundation Trust, Salford Royal Hospital, Salford, UK ronan.o'
| | - Louis Kirton
- Medical Research Institute of New Zealand, Wellington, New Zealand
- Victoria University, Wellington, New Zealand
| | - Mark Weatherall
- Victoria University, Wellington, New Zealand
- University of Otago Wellington, Wellington, New Zealand
| | - Nawar Diar Bakerly
- Northern Care Alliance NHS Foundation Trust, Salford Royal Hospital, Salford, UK
- Manchester Metropolitan University, Manchester, UK
| | - Peter Turkington
- Northern Care Alliance NHS Foundation Trust, Salford Royal Hospital, Salford, UK
| | - Julie Cook
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | - Richard Beasley
- Medical Research Institute of New Zealand, Wellington, New Zealand
- Victoria University, Wellington, New Zealand
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31
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Cao L, Chen Q, Xiang YY, Xiao C, Tan YT, Li H. Effects of Oxygenation Targets on Mortality in Critically Ill Patients in Intensive Care Units: A Systematic Review and Meta-Analysis. Anesth Analg 2024:00000539-990000000-00731. [PMID: 38315626 DOI: 10.1213/ane.0000000000006859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
BACKGROUND The effects of oxygenation targets (partial pressure of arterial oxygen [Pao2], arterial oxygen saturation [Sao2]/peripheral oxygen saturation [Spo2], or inspiratory oxygen concentration [Fio2] on clinical outcomes in critically ill patients remains controversial. We reviewed the existing literature to assess the effects of lower and higher oxygenation targets on the mortality rates of critically ill intensive care unit (ICU) patients. METHODS MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, and Web of Science databases were searched from their dates of inception to December 31, 2022, for randomized controlled trials (RCTs) comparing lower and higher oxygenation targets for critically ill patients ≥18 years of age undergoing mechanical ventilation, nasal cannula, oxygen mask, or high-flow oxygen therapy in the ICU. Data extraction was conducted independently, and RoB 2.0 software was used to evaluate the quality of each RCT. A random-effects model was used for the meta-analysis to calculate the relative risk (RR). We used the I2 statistic as a measure of statistical heterogeneity. Certainty of evidence was assessed according to the Grading of Recommendations Assessment, Development and Evaluation (GRADE) guidelines. RESULTS We included 12 studies with a total of 7416 patients participating in RCTs. Oxygenation targets were extremely heterogeneous between studies. The meta-analysis found no differences in mortality between lower and higher oxygenation targets for critically ill ICU patients (relative risk [RR], 1.00; 95% confidence interval [CI], 0.93-1.09; moderate certainty). The incidence of serious adverse events (RR, 0.93; 95% CI, 0.85-1.00; high certainty), mechanical ventilation-free days through day 28 (mean difference [MD], -0.05; 95%CI, -1.23 to 1.13; low certainty), the number of patients requiring renal replacement therapy (RRT) (RR, 0.96; 95% CI, 0.84-1.10; low certainty), and ICU length of stay (MD, 1.05; 95% CI, -0.04 to 2.13; very low certainty) also did not differ among patients with lower or higher oxygenation targets. CONCLUSIONS Critically ill ICU patients ≥18 years of age managed with lower and higher oxygenation targets did not differ in terms of mortality, RRT need, mechanical ventilation-free days through day 28, or ICU length of stay. However, due to considerable heterogeneity between specific targets in individual studies, no conclusion can be drawn regarding the effect of oxygenation targets on ICU outcomes.
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Affiliation(s)
- Lei Cao
- From the Department of Anaesthesiology, Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Qi Chen
- Department of Anesthesiology, Chongqing University Cancer Hospital, Chongqing, China
| | - Ying-Ying Xiang
- Department of Anesthesiology, Chongqing University Cancer Hospital, Chongqing, China
| | - Cheng Xiao
- From the Department of Anaesthesiology, Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Yu-Ting Tan
- From the Department of Anaesthesiology, Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Hong Li
- From the Department of Anaesthesiology, Second Affiliated Hospital of Army Medical University, Chongqing, China
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32
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Shein SL, Karsies T. Conservative versus liberal oxygenation targets for children admitted to PICU. Lancet 2024; 403:326-327. [PMID: 38048792 DOI: 10.1016/s0140-6736(23)02301-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 10/12/2023] [Indexed: 12/06/2023]
Affiliation(s)
- Steven L Shein
- Rainbow Babies and Children's Hospital, Division of Pediatric Critical Care Medicine, Cleveland, OH 44106, USA.
| | - Todd Karsies
- Nationwide Children's Hospital, Division of Pediatric Critical Care Medicine, Columbus, Ohio USA
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33
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Peters MJ, Gould DW, Ray S, Thomas K, Chang I, Orzol M, O'Neill L, Agbeko R, Au C, Draper E, Elliot-Major L, Giallongo E, Jones GAL, Lampro L, Lillie J, Pappachan J, Peters S, Ramnarayan P, Sadique Z, Rowan KM, Harrison DA, Mouncey PR. Conservative versus liberal oxygenation targets in critically ill children (Oxy-PICU): a UK multicentre, open, parallel-group, randomised clinical trial. Lancet 2024; 403:355-364. [PMID: 38048787 DOI: 10.1016/s0140-6736(23)01968-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 09/10/2023] [Accepted: 09/14/2023] [Indexed: 12/06/2023]
Abstract
BACKGROUND The optimal target for systemic oxygenation in critically ill children is unknown. Liberal oxygenation is widely practiced, but has been associated with harm in paediatric patients. We aimed to evaluate whether conservative oxygenation would reduce duration of organ support or incidence of death compared to standard care. METHODS Oxy-PICU was a pragmatic, multicentre, open-label, randomised controlled trial in 15 UK paediatric intensive care units (PICUs). Children admitted as an emergency, who were older than 38 weeks corrected gestational age and younger than 16 years receiving invasive ventilation and supplemental oxygen were randomly allocated in a 1:1 ratio via a concealed, central, web-based randomisation system to conservative peripheral oxygen saturations ([SpO2] 88-92%) or liberal (SpO2 >94%) targets. The primary outcome was the duration of organ support at 30 days following random allocation, a rank-based endpoint with death either on or before day 30 as the worst outcome (a score equating to 31 days of organ support), with survivors assigned a score between 1 and 30 depending on the number of calendar days of organ support received. The primary effect estimate was the probabilistic index, a value greater than 0·5 indicating more than 50% probability that conservative oxygenation is superior to liberal oxygenation for a randomly selected patient. All participants in whom consent was available were included in the intention-to-treat analysis. The completed study was registered with the ISRCTN registry (ISRCTN92103439). FINDINGS Between Sept 1, 2020, and May 15, 2022, 2040 children were randomly allocated to conservative or liberal oxygenation groups. Consent was available for 1872 (92%) of 2040 children. The conservative oxygenation group comprised 939 children (528 [57%] of 927 were female and 399 [43%] of 927 were male) and the liberal oxygenation group included 933 children (511 [56%] of 920 were female and 409 [45%] of 920 were male). Duration of organ support or death in the first 30 days was significantly lower in the conservative oxygenation group (probabilistic index 0·53, 95% CI 0·50-0·55; p=0·04 Wilcoxon rank-sum test, adjusted odds ratio 0·84 [95% CI 0·72-0·99]). Prespecified adverse events were reported in 24 (3%) of 939 patients in the conservative oxygenation group and 36 (4%) of 933 patients in the liberal oxygenation group. INTERPRETATION Among invasively ventilated children who were admitted as an emergency to a PICU receiving supplemental oxygen, a conservative oxygenation target resulted in a small, but significant, greater probability of a better outcome in terms of duration of organ support at 30 days or death when compared with a liberal oxygenation target. Widespread adoption of a conservative oxygenation saturation target (SpO2 88-92%) could help improve outcomes and reduce costs for the sickest children admitted to PICUs. FUNDING UK National Institute for Health and Care Research Health Technology Assessment Programme.
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Affiliation(s)
- Mark J Peters
- Paediatric Intensive Care Unit, Great Ormond Street Hospital for Children NHS Foundation Trust and NIHR Biomedical Research Centre, London, UK; Respiratory, Critical Care and Anaesthesia Unit, Infection, Inflammation, and Immunity Division, University College London Great Ormond Street Institute of Child Health, London, UK; Children's Acute Transport Service, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.
| | - Doug W Gould
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
| | - Samiran Ray
- Paediatric Intensive Care Unit, Great Ormond Street Hospital for Children NHS Foundation Trust and NIHR Biomedical Research Centre, London, UK
| | - Karen Thomas
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
| | - Irene Chang
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
| | - Marzena Orzol
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
| | - Lauran O'Neill
- Paediatric Intensive Care Unit, Great Ormond Street Hospital for Children NHS Foundation Trust and NIHR Biomedical Research Centre, London, UK
| | - Rachel Agbeko
- Department of Paediatric Intensive Care, Great North Children's Hospital, The Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK; Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Carly Au
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
| | - Elizabeth Draper
- Department of Population Health Sciences, University of Leicester, Leicester, UK
| | | | - Elisa Giallongo
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
| | - Gareth A L Jones
- Paediatric Intensive Care Unit, Great Ormond Street Hospital for Children NHS Foundation Trust and NIHR Biomedical Research Centre, London, UK
| | - Lamprini Lampro
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
| | - Jon Lillie
- Paediatric Intensive Care Unit, Evelina London Children's Hospital, London, UK; Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, UK
| | - Jon Pappachan
- Paediatric Intensive Care Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Sam Peters
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
| | - Padmanabhan Ramnarayan
- Children's Acute Transport Service, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK; Section of Anaesthetics, Pain Medicine, and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - Zia Sadique
- Department of Health Services Research and Policy, London School of Hygiene & Tropical Medicine, London, UK
| | - Kathryn M Rowan
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
| | - David A Harrison
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
| | - Paul R Mouncey
- Clinical Trials Unit, Intensive Care National Audit & Research Centre, London, UK
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Collins PD, Giosa L, Camporota L, Barrett NA. State of the art: Monitoring of the respiratory system during veno-venous extracorporeal membrane oxygenation. Perfusion 2024; 39:7-30. [PMID: 38131204 DOI: 10.1177/02676591231210461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Monitoring the patient receiving veno-venous extracorporeal membrane oxygenation (VV ECMO) is challenging due to the complex physiological interplay between native and membrane lung. Understanding these interactions is essential to understand the utility and limitations of different approaches to respiratory monitoring during ECMO. We present a summary of the underlying physiology of native and membrane lung gas exchange and describe different tools for titrating and monitoring gas exchange during ECMO. However, the most important role of VV ECMO in severe respiratory failure is as a means of avoiding further ergotrauma. Although optimal respiratory management during ECMO has not been defined, over the last decade there have been advances in multimodal respiratory assessment which have the potential to guide care. We describe a combination of imaging, ventilator-derived or invasive lung mechanic assessments as a means to individualise management during ECMO.
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Affiliation(s)
- Patrick Duncan Collins
- Department of Critical Care Medicine, Guy's and St Thomas' National Health Service Foundation Trust, London, UK
- Centre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, King's College London, London, UK
| | - Lorenzo Giosa
- Department of Critical Care Medicine, Guy's and St Thomas' National Health Service Foundation Trust, London, UK
| | - Luigi Camporota
- Department of Critical Care Medicine, Guy's and St Thomas' National Health Service Foundation Trust, London, UK
- Centre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, King's College London, London, UK
| | - Nicholas A Barrett
- Department of Critical Care Medicine, Guy's and St Thomas' National Health Service Foundation Trust, London, UK
- Centre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, King's College London, London, UK
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Kaas-Hansen BS, Kjaer MBN, Møller MH, Jensen AKG, Larsen ME, Cuthbertson BH, Perner A, Granholm A. Health-related quality of life trajectories in critical illness: Protocol for a Monte Carlo simulation study. Acta Anaesthesiol Scand 2024; 68:122-129. [PMID: 37650374 DOI: 10.1111/aas.14324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 08/12/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND Health-related quality of life (HRQoL) is a patient-centred outcome increasingly used as a secondary outcome in critical care research. It may cover several important dimensions of clinical status in intensive care unit (ICU) patients that arguably elude other more easily quantified outcomes such as mortality. Poor associations with harder outcomes, conflicting data on HRQoL in critically ill compared to the background population, and paradoxical effects on HRQoL and mortality complicate the current operationalisation in critical care trials. This protocol outlines a simulation study that will gauge if the areas under the HRQoL trajectories could be a viable alternative. METHODS We will gauge the behaviour of the proposed HRQoL operationalisation through Monte Carlo simulations, under clinical scenarios that reflect a broad critical care population eligible for inclusion in a large pragmatic trial. We will simulate 15,360 clinical scenarios based on a full factorial design with the following seven simulation parameters: number of patients per arm, relative mortality reduction in the interventional arm, acceleration of HRQoL improvement in the interventional arm, the relative improvement in final HRQoL in the interventional arm, dampening effect of mortality on HRQoL values at discharge from the ICU, proportion of so-called mortality benefiters in the interventional arm and mortality trajectory shape. For each clinical scenario, we will simulate 100,000 two-arm trials with 1:1 randomisation. HRQoL will be sampled fortnightly after ICU discharge. Outcomes will include HRQoL in survivors and all patients at the end of follow-up; mean areas under the HRQoL trajectories in both arms; and mean difference between areas under the HRQoL trajectories and single-sampled HRQoLs at the end of follow-up. DISCUSSION In the outlined simulation study, we aim to assess whether the area under the HRQoL trajectory curve could be a candidate for reconciling the seemingly paradoxical effects on improved mortality and reduced HRQoL while remaining sensitive to early or accelerated improvement in patient outcomes. The resultant insights will inform subsequent methodological work on prudent collection and statistical analysis of such data from real critically ill patients.
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Affiliation(s)
- Benjamin Skov Kaas-Hansen
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Section of Biostatistics, Deparment of Public Health, University of Copenhagen, Copenhagen, Denmark
| | | | - Morten Hylander Møller
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
| | - Aksel Karl Georg Jensen
- Section of Biostatistics, Deparment of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Mia Esta Larsen
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
| | - Brian H Cuthbertson
- Department of Critical Care, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Anders Perner
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
| | - Anders Granholm
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
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Jacquier M, Labruyère M, Ecarnot F, Roudaut JB, Andreu P, Voizeux P, Save Q, Pedri R, Rigaud JP, Quenot JP. Ventilatory Management of Patients with Acute Respiratory Distress Syndrome Due to SARS-CoV-2. J Clin Med 2023; 12:7509. [PMID: 38137578 PMCID: PMC10743400 DOI: 10.3390/jcm12247509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 11/20/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
The emergence of the new SARS-CoV-2 in December 2019 caused a worldwide pandemic of the resultant disease, COVID-19. There was a massive surge in admissions to intensive care units (ICU), notably of patients with hypoxaemic acute respiratory failure. In these patients, optimal oxygen therapy was crucial. In this article, we discuss tracheal intubation to provide mechanical ventilation in patients with hypoxaemic acute respiratory failure due to SARS-CoV-2. We first describe the pathophysiology of respiratory anomalies leading to acute respiratory distress syndrome (ARDS) due to infection with SARS-CoV-2, and then briefly review management, focusing particularly on the ventilation strategy. Overall, the ventilatory management of ARDS due to SARS-CoV-2 infection is largely the same as that applied in ARDS from other causes, and lung-protective ventilation is recommended. The difference lies in the initial clinical presentation, with profound hypoxaemia often observed concomitantly with near-normal pulmonary compliance.
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Affiliation(s)
- Marine Jacquier
- Department of Intensive Care, François Mitterrand, University Hospital, 21000 Dijon, France; (M.J.); (M.L.); (J.-B.R.); (P.A.); (P.V.); (Q.S.); (R.P.)
- Lipness Team, INSERM Research Centre LNC-UMR1231 and LabEx LipSTIC, University of Burgundy, 21000 Dijon, France
| | - Marie Labruyère
- Department of Intensive Care, François Mitterrand, University Hospital, 21000 Dijon, France; (M.J.); (M.L.); (J.-B.R.); (P.A.); (P.V.); (Q.S.); (R.P.)
- INSERM CIC 1432, Clinical Epidemiology, University of Burgundy, 21000 Dijon, France
| | - Fiona Ecarnot
- Department of Cardiology, University Hospital Besancon, 25030 Besançon, France;
- EA3920, University of Franche-Comté, 25000 Besançon, France
| | - Jean-Baptiste Roudaut
- Department of Intensive Care, François Mitterrand, University Hospital, 21000 Dijon, France; (M.J.); (M.L.); (J.-B.R.); (P.A.); (P.V.); (Q.S.); (R.P.)
| | - Pascal Andreu
- Department of Intensive Care, François Mitterrand, University Hospital, 21000 Dijon, France; (M.J.); (M.L.); (J.-B.R.); (P.A.); (P.V.); (Q.S.); (R.P.)
| | - Pierre Voizeux
- Department of Intensive Care, François Mitterrand, University Hospital, 21000 Dijon, France; (M.J.); (M.L.); (J.-B.R.); (P.A.); (P.V.); (Q.S.); (R.P.)
| | - Quentin Save
- Department of Intensive Care, François Mitterrand, University Hospital, 21000 Dijon, France; (M.J.); (M.L.); (J.-B.R.); (P.A.); (P.V.); (Q.S.); (R.P.)
| | - Romain Pedri
- Department of Intensive Care, François Mitterrand, University Hospital, 21000 Dijon, France; (M.J.); (M.L.); (J.-B.R.); (P.A.); (P.V.); (Q.S.); (R.P.)
| | - Jean-Philippe Rigaud
- Department of Intensive Care, Centre Hospitalier de Dieppe, 76202 Dieppe, France;
- Espace de Réflexion Éthique de Normandie, University Hospital Caen, 14000 Caen, France
| | - Jean-Pierre Quenot
- Department of Intensive Care, François Mitterrand, University Hospital, 21000 Dijon, France; (M.J.); (M.L.); (J.-B.R.); (P.A.); (P.V.); (Q.S.); (R.P.)
- Lipness Team, INSERM Research Centre LNC-UMR1231 and LabEx LipSTIC, University of Burgundy, 21000 Dijon, France
- INSERM CIC 1432, Clinical Epidemiology, University of Burgundy, 21000 Dijon, France
- DRCI, USMR, CHU Dijon Bourgogne, 21000 Dijon, France
- Espace de Réflexion Éthique Bourgogne Franche-Comté (EREBFC), University of Burgundy, 21000 Dijon, France
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Rasmussen SB, Jeppesen KK, Kjaergaard J, Hassager C, Schmidt H, Mølstrøm S, Beske RP, Grand J, Ravn HB, Winther-Jensen M, Meyer MAS, Møller JE. Blood Pressure and Oxygen Targets on Kidney Injury After Cardiac Arrest. Circulation 2023; 148:1860-1869. [PMID: 37791480 DOI: 10.1161/circulationaha.123.066012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 09/06/2023] [Indexed: 10/05/2023]
Abstract
BACKGROUND Acute kidney injury (AKI) represents a common and serious complication to out-of-hospital cardiac arrest. The importance of post-resuscitation care targets for blood pressure and oxygenation for the development of AKI is unknown. METHODS This is a substudy of a randomized 2-by-2 factorial trial, in which 789 comatose adult patients who had out-of-hospital cardiac arrest with presumed cardiac cause and sustained return of spontaneous circulation were randomly assigned to a target mean arterial blood pressure of either 63 or 77 mm Hg. Patients were simultaneously randomly assigned to either a restrictive oxygen target of a partial pressure of arterial oxygen (Pao2) of 9 to 10 kPa or a liberal oxygenation target of a Pao2 of 13 to 14 kPa. The primary outcome for this study was AKI according to KDIGO (Kidney Disease: Improving Global Outcomes) classification in patients surviving at least 48 hours (N=759). Adjusted logistic regression was performed for patients allocated to high blood pressure and liberal oxygen target as reference. RESULTS The main population characteristics at admission were: age, 64 (54-73) years; 80% male; 90% shockable rhythm; and time to return of spontaneous circulation, 18 (12-26) minutes. Patients allocated to a low blood pressure and liberal oxygen target had an increased risk of developing AKI compared with patients with high blood pressure and liberal oxygen target (84/193 [44%] versus 56/187 [30%]; adjusted odds ratio, 1.87 [95% CI, 1.21-2.89]). Multinomial logistic regression revealed that the increased risk of AKI was only related to mild-stage AKI (KDIGO stage 1). There was no difference in risk of AKI in the other groups. Plasma creatinine remained high during hospitalization in the low blood pressure and liberal oxygen target group but did not differ between groups at 6- and 12-month follow-up. CONCLUSIONS In comatose patients who had been resuscitated after out-of-hospital cardiac arrest, patients allocated to a combination of a low mean arterial blood pressure and a liberal oxygen target had a significantly increased risk of mild-stage AKI. No difference was found in terms of more severe AKI stages or other kidney-related adverse outcomes, and creatinine had normalized at 1 year after discharge. REGISTRATION URL: https://www.clinicaltrials.gov; Unique identifier: NCT03141099.
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Affiliation(s)
- Sebastian Buhl Rasmussen
- Department of Anesthesiology and Intensive Care (S.B.R., H.S., S.M., H.B.R., M.A.S.M.), Odense University Hospital, Denmark
| | | | - Jesper Kjaergaard
- Department of Cardiology, the Heart Center, Copenhagen University Hospital Rigshospitalet, Denmark (J.K., C.H., R.P.B., J.G., M.W.-J., J.E.M.)
- Department of Clinical Medicine, University of Copenhagen, Denmark (J.K., C.H.)
| | - Christian Hassager
- Department of Cardiology, the Heart Center, Copenhagen University Hospital Rigshospitalet, Denmark (J.K., C.H., R.P.B., J.G., M.W.-J., J.E.M.)
- Department of Clinical Medicine, University of Copenhagen, Denmark (J.K., C.H.)
| | - Henrik Schmidt
- Department of Anesthesiology and Intensive Care (S.B.R., H.S., S.M., H.B.R., M.A.S.M.), Odense University Hospital, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense (H.S., H.B.R., J.E.M.)
| | - Simon Mølstrøm
- Department of Anesthesiology and Intensive Care (S.B.R., H.S., S.M., H.B.R., M.A.S.M.), Odense University Hospital, Denmark
| | - Rasmus Paulin Beske
- Department of Cardiology, the Heart Center, Copenhagen University Hospital Rigshospitalet, Denmark (J.K., C.H., R.P.B., J.G., M.W.-J., J.E.M.)
| | - Johannes Grand
- Department of Cardiology, the Heart Center, Copenhagen University Hospital Rigshospitalet, Denmark (J.K., C.H., R.P.B., J.G., M.W.-J., J.E.M.)
| | - Hanne Berg Ravn
- Department of Anesthesiology and Intensive Care (S.B.R., H.S., S.M., H.B.R., M.A.S.M.), Odense University Hospital, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense (H.S., H.B.R., J.E.M.)
| | - Matilde Winther-Jensen
- Department of Cardiology, the Heart Center, Copenhagen University Hospital Rigshospitalet, Denmark (J.K., C.H., R.P.B., J.G., M.W.-J., J.E.M.)
| | - Martin Abild Stengaard Meyer
- Department of Anesthesiology and Intensive Care (S.B.R., H.S., S.M., H.B.R., M.A.S.M.), Odense University Hospital, Denmark
| | - Jacob Eifer Møller
- Department of Cardiology (K.K.J., J.E.M.), Odense University Hospital, Denmark
- Department of Cardiology, the Heart Center, Copenhagen University Hospital Rigshospitalet, Denmark (J.K., C.H., R.P.B., J.G., M.W.-J., J.E.M.)
- Department of Clinical Research, University of Southern Denmark, Odense (H.S., H.B.R., J.E.M.)
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Kotani Y, Turi S, Ortalda A, Baiardo Redaelli M, Marchetti C, Landoni G, Bellomo R. Positive single-center randomized trials and subsequent multicenter randomized trials in critically ill patients: a systematic review. Crit Care 2023; 27:465. [PMID: 38017475 PMCID: PMC10685543 DOI: 10.1186/s13054-023-04755-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 11/21/2023] [Indexed: 11/30/2023] Open
Abstract
BACKGROUND It is unclear how often survival benefits observed in single-center randomized controlled trials (sRCTs) involving critically ill patients are confirmed by subsequent multicenter randomized controlled trials (mRCTs). We aimed to perform a systemic literature review of sRCTs with a statistically significant mortality reduction and to evaluate whether subsequent mRCTs confirmed such reduction. METHODS We searched PubMed for sRCTs published in the New England Journal of Medicine, JAMA, or Lancet, from inception until December 31, 2016. We selected studies reporting a statistically significant mortality decrease using any intervention (drug, technique, or strategy) in adult critically ill patients. We then searched for subsequent mRCTs addressing the same research question tested by the sRCT. We compared the concordance of results between sRCTs and mRCTs when any mRCT was available. We registered this systematic review in the PROSPERO International Prospective Register of Systematic Reviews (CRD42023455362). RESULTS We identified 19 sRCTs reporting a significant mortality reduction in adult critically ill patients. For 16 sRCTs, we identified at least one subsequent mRCT (24 trials in total), while the interventions from three sRCTs have not yet been addressed in a subsequent mRCT. Only one out of 16 sRCTs (6%) was followed by a mRCT replicating a significant mortality reduction; 14 (88%) were followed by mRCTs with no mortality difference. The positive finding of one sRCT (6%) on intensive glycemic control was contradicted by a subsequent mRCT showing a significant mortality increase. Of the 14 sRCTs referenced at least once in international guidelines, six (43%) have since been either removed or suggested against in the most recent versions of relevant guidelines. CONCLUSION Mortality reduction shown by sRCTs is typically not replicated by mRCTs. The findings of sRCTs should be considered hypothesis-generating and should not contribute to guidelines.
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Affiliation(s)
- Yuki Kotani
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, Via Olgettina 58, 20132, Milan, Italy
- Department of Intensive Care Medicine, Kameda Medical Center, 929 Higashi-cho, Kamogawa, Chiba, 296-8602, Japan
| | - Stefano Turi
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
| | - Alessandro Ortalda
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
| | - Martina Baiardo Redaelli
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
| | - Cristiano Marchetti
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
| | - Giovanni Landoni
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy.
- School of Medicine, Vita-Salute San Raffaele University, Via Olgettina 58, 20132, Milan, Italy.
| | - Rinaldo Bellomo
- Department of Critical Care, The University of Melbourne, Melbourne, Australia
- Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, Australia
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Zhou X, Luo X, Li Q, Chen G, Tong J, Deng W. Prone versus lateral position in acute hypoxemic respiratory failure patients with HFNO therapy: study protocol for a multicentre randomised controlled open-label trial. Trials 2023; 24:762. [PMID: 38012708 PMCID: PMC10683165 DOI: 10.1186/s13063-023-07761-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 10/28/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND High-flow nasal oxygen (HFNO) therapy is a leading treatment technique for acute hypoxemic respiratory failure (AHRF), but its treatment failure rate remains high. The awake prone position (APP) has been proven to increase oxygenation and reduce the endotracheal intubation rate in patients with COVID-19-induced AHRF. However, the APP is poorly tolerated in patients, and its performance in improving prognoses is controversial. The lateral position has a similar mechanism and effect to the prone position, but it is more tolerable than the prone position. Therefore, it is worth exploring whether the lateral position is better for awake patients with AHRF. METHODS This is a protocol for a three-arm parallel-group multicentre randomised controlled open-label exploratory trial. A total of 583 patients from two hospitals in Chongqing, China, will be randomised to take the semi-recumbent position, lateral position, or prone position at a ratio of 1:1:1. Patients are all diagnosed with AHRF secondary to non-COVID-19 pneumonia or lung infection and receiving HFNO therapy. The primary outcome is ventilator-free days in 28 days. The secondary outcomes are the 28-day intubation rate, 28-day all-cause mortality, total position change time, the incidence of adverse events, number of hours using HFNO therapy, length of hospital and intensive care unit (ICU) stay, and others. We will conduct subgroup analyses on the arterial partial pressure of oxygen to the fraction of inspiration oxygen (PaO2/FiO2) ratio (> 200 mmHg or ≤ 200 mmHg), time from admission to intervention implementation (< 24 h or ≥ 24 h), position changing time, and different diagnoses. DISCUSSION This trial will explore the prognostic effects of the APP with that of the lateral position in awake patients with non-COVID-19AHRF and compare the differences between them. To provide evidence for clinical decision-making and further research on position management. TRIAL REGISTRATION This trial was registered in the Chinese Clinical Trial Registry. The registration number is ChiCTR2200055822 . Registered on January 20, 2022.
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Affiliation(s)
- Xixin Zhou
- The Second Clinical College, Chongqing Medical University, Chongqing, China
- Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaoqing Luo
- Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qin Li
- Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Guihua Chen
- Nursing Department, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
| | - Jin Tong
- Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wang Deng
- Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Zijlstra GJ. Different oxygenation targets for stable COPD and acute exacerbations in the ICU. Intensive Care Med 2023; 49:1428-1429. [PMID: 37676503 DOI: 10.1007/s00134-023-07206-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 08/18/2023] [Indexed: 09/08/2023]
Affiliation(s)
- G Jan Zijlstra
- Department of Intensive Care, Amsterdam University Medical Center, Location VUMC, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
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Dushianthan A, Bracegirdle L, Cusack R, Cumpstey AF, Postle AD, Grocott MPW. Alveolar Hyperoxia and Exacerbation of Lung Injury in Critically Ill SARS-CoV-2 Pneumonia. Med Sci (Basel) 2023; 11:70. [PMID: 37987325 PMCID: PMC10660857 DOI: 10.3390/medsci11040070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/17/2023] [Accepted: 10/30/2023] [Indexed: 11/22/2023] Open
Abstract
Acute hypoxic respiratory failure (AHRF) is a prominent feature of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) critical illness. The severity of gas exchange impairment correlates with worse prognosis, and AHRF requiring mechanical ventilation is associated with substantial mortality. Persistent impaired gas exchange leading to hypoxemia often warrants the prolonged administration of a high fraction of inspired oxygen (FiO2). In SARS-CoV-2 AHRF, systemic vasculopathy with lung microthrombosis and microangiopathy further exacerbates poor gas exchange due to alveolar inflammation and oedema. Capillary congestion with microthrombosis is a common autopsy finding in the lungs of patients who die with coronavirus disease 2019 (COVID-19)-associated acute respiratory distress syndrome. The need for a high FiO2 to normalise arterial hypoxemia and tissue hypoxia can result in alveolar hyperoxia. This in turn can lead to local alveolar oxidative stress with associated inflammation, alveolar epithelial cell apoptosis, surfactant dysfunction, pulmonary vascular abnormalities, resorption atelectasis, and impairment of innate immunity predisposing to secondary bacterial infections. While oxygen is a life-saving treatment, alveolar hyperoxia may exacerbate pre-existing lung injury. In this review, we provide a summary of oxygen toxicity mechanisms, evaluating the consequences of alveolar hyperoxia in COVID-19 and propose established and potential exploratory treatment pathways to minimise alveolar hyperoxia.
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Affiliation(s)
- Ahilanandan Dushianthan
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Luke Bracegirdle
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Rebecca Cusack
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Andrew F Cumpstey
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Anthony D Postle
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Michael P W Grocott
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
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Nie Y, Liang J, Sun J, Li J, Zhai X, Zhao P. Orexin A alleviates LPS-induced acute lung injury by inhibiting macrophage activation through JNK-mediated autophagy. Int Immunopharmacol 2023; 124:111018. [PMID: 37801969 DOI: 10.1016/j.intimp.2023.111018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/16/2023] [Accepted: 09/28/2023] [Indexed: 10/08/2023]
Abstract
Crosstalk between the central nervous system and immune system by the neuroendocrine and autonomic nervous systems is critical during the inflammatory response. Exposure to endotoxin alters the activity of hypothalamic homeostatic systems, resulting in changed transmitter release within the brain. This study investigated the effects and cellular molecular mechanisms of neurogenic and exogenous orexin-A (OXA) in LPS-induced acute lung injury (ALI). We found the production of OXA in the hypothalamus and lungs was both decreased following LPS infection. LPS-induced lung injury including the destruction of the structure, inflammatory cell infiltration, and pro-inflammatory cytokines generation was aggravated in mice in which orexin neurons were lesioned with the neurotoxin orexin-saporin (orexin-SAP). Administration of exogenous OXA greatly improved lung pathology and reduced inflammatory response. Orexin receptors were found in cultured mouse bone marrow-derived macrophages (BMDMs) and lung macrophages (LMs), adoptive transfer of OXA-treated macrophages showed alleviative lung injury compared to adoptive transfer of macrophages without OXA treatment. Mechanistically, it is the induction of autophagy via JNK activation that is responsible for OXA to suppress macrophage-derived pro-inflammatory cytokine production. These findings highlight the importance of neuro-immune crosstalk and indicate that OXA may be a potential therapeutic agent in the treatment of ALI.
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Affiliation(s)
- Yunjuan Nie
- Affiliated Hospital of Jiangnan University, 1000 Hefeng Road, Wuxi 214000, Jiangsu Province, PR China; Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Junjie Liang
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Jie Sun
- Department of Pharmacy, Wuxi Higher Health Vocational Technology School, Wuxi 214000, PR China
| | - Jiao Li
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Xiaorun Zhai
- Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Peng Zhao
- Affiliated Hospital of Jiangnan University, 1000 Hefeng Road, Wuxi 214000, Jiangsu Province, PR China; Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
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Martin DS, Mckenna HT, Rowan KM, Gould DW, Mouncey PR, Grocott MPW, Harrison DA. The effect of conservative oxygen therapy on mortality in adult critically ill patients: A systematic review and meta-analysis of randomised controlled trials. J Intensive Care Soc 2023; 24:399-408. [PMID: 37841302 PMCID: PMC10572476 DOI: 10.1177/17511437231192385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2023] Open
Abstract
Background Oxygen is the commonest intervention provided to critically ill patients requiring mechanical ventilation. Despite this, it is unclear how much oxygen should be administered to patients in order to promote the best clinical outcomes and it has been suggested that a strategy of conservative oxygen therapy (COT) may be advantageous. We therefore sought to answer the question of whether COT versus usual or liberal oxygen therapy was beneficial to adult patients receiving mechanical ventilation on an intensive care unit (ICU) by performing a systematic review and meta-analysis. Methods Studies were included if they were randomised controlled trials comparing COT to liberal or usual oxygen therapy strategies in acutely ill adults (aged ⩾18 years) admitted to an ICU, and reported an outcome of interest. Studies were excluded if they were limited to a specific single disease diagnosis. The review was registered on PROSPERO (CRD42022308436). Risk of bias was assessed using a modified Cochrane Risk of Bias assessment tool. Effect estimates were pooled using a random effects model with the between study variance estimated using restricted maximum likelihood and standard errors calculated using the method of Hartung-Knapp/Sidik-Jonkman. Between study heterogeneity was quantified using the I2 statistic. The certainty in the body of evidence was assessed using GRADE criteria. Results Nine eligible studies with 5727 participants fulfilled all eligibility criteria. Trials varied in their definitions of COT and liberal or usual oxygen therapy. The pooled estimate of risk ratio for 90 day mortality for COT versus comparator was 0.99 (95% confidence interval 0.88-1.12, 95% prediction interval 0.82-1.21). There was low heterogeneity among studies (I2 = 22.4%). The finding that mortality was similar for patients managed with COT or usual/liberal oxygen therapy was graded as moderate certainty. Conclusions In critically ill adults admitted to an ICU, COT is neither beneficial nor harmful when compared to usual or liberal oxygen therapy. Trials to date have been inconsistent in defining both COT and liberal or usual oxygen therapy, which may have had an impact on the results of this meta-analysis. Future research should focus on unifying definitions and outcome measures.
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Affiliation(s)
- Daniel S Martin
- Peninsula Medical School, University of Plymouth, Plymouth, UK
- Intensive Care Unit, University Hospitals Plymouth, Plymouth, UK
| | - Helen T Mckenna
- Peninsula Medical School, University of Plymouth, Plymouth, UK
| | - Kathryn M Rowan
- Intensive Care National Audit & Research Centre (ICNARC), London, UK
| | - Doug W Gould
- Intensive Care National Audit & Research Centre (ICNARC), London, UK
| | - Paul R Mouncey
- Intensive Care National Audit & Research Centre (ICNARC), London, UK
| | - Michael PW Grocott
- Clinical & Experimental Sciences, University of Southampton, Southampton, UK
| | - David A Harrison
- Intensive Care National Audit & Research Centre (ICNARC), London, UK
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Jiang X, Qiu D. Effects of Conservative Oxygen Therapy versus Conventional Oxygen Therapy on the Mortality in ICU Patients: A Meta-Analysis. Can Respir J 2023; 2023:7023712. [PMID: 37868784 PMCID: PMC10590270 DOI: 10.1155/2023/7023712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 09/10/2023] [Accepted: 09/27/2023] [Indexed: 10/24/2023] Open
Abstract
Objective To compare the effects of conservative oxygen therapy and conventional oxygen therapy on the mortality of critically ill patients in ICU. Methods Searching for randomized controlled clinical trials (RCT) on the effect of conservative oxygen therapy and conventional oxygen therapy on the mortality of critically ill patients in computer databases, including PubMed, Embase, Cochrane Library, CNKI, VIP, and Wanfang, with postdate before August 2022. We have two researchers evaluating the quality of the literature included and extracting data as per the inclusion and exclusion criteria and then analyzed it with RevMan 5.4 statistical software. Primary outcome included short-term mortality (28-day mortality or ICU mortality); secondary outcome included 90-day mortality, ICU length of stay, hospital length of stay, incidence of new organ dysfunction in ICU, incidence of new infection in ICU, and incidence of ICUAW. Results A total of 5779 subjects were included in 10 articles, including 2886 in the conservative oxygen therapy group and 2893 in the conventional oxygen therapy group. The meta-analysis showed that conservative oxygen therapy had an advantage over conventional oxygen therapy in terms of short-term mortality (P=0.03). Subgroup analysis based on different conservative oxygen targets showed that this advantage was statistically significant when the target is set above 90% (RR = 0.76, 95% CI = 0.62∼0.94, P=0.01), while there was no significant difference between conservative oxygen therapy and conventional oxygen therapy when the target is set below 90% (RR = 0.95, 95% CI = 0.79∼1.16, P=0.63). In addition, in terms of the incidence of new infections in the ICU (P=0.03) and the incidence of ICUAW (P=0.03), conservative oxygen therapy also had advantages over conventional oxygen therapy, and the difference was statistically significant. But in terms of 90-day mortality (P=0.61), ICU length of stay (P=0.96), hospital length of stay (P=0.47), and incidence of new organ dysfunction in ICU (P=0.61), there was no significant difference between conservative oxygen therapy and conventional oxygen therapy. Conclusion Compared with conventional oxygen therapy, conservative oxygen therapy can reduce the short-term mortality of severe patients, especially when the conservative oxygen therapy target is set above 90%. And it can also reduce the incidence of ICU new infections and ICUAW, while having no effect on 90-day mortality, ICU length of stay, and hospital length of stay.
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Affiliation(s)
- Xinyu Jiang
- The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Dong Qiu
- The First Affiliated Hospital of Soochow University, Suzhou 215006, China
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Macherey-Meyer S, Heyne S, Meertens MM, Braumann S, Hueser C, Mauri V, Baldus S, Lee S, Adler C. Restrictive versus high-dose oxygenation strategy in post-arrest management following adult non-traumatic cardiac arrest: a meta-analysis. Crit Care 2023; 27:387. [PMID: 37798666 PMCID: PMC10557287 DOI: 10.1186/s13054-023-04669-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 09/28/2023] [Indexed: 10/07/2023] Open
Abstract
PURPOSE Neurological damage is the main cause of death or withdrawal of care in comatose survivors of cardiac arrest (CA). Hypoxemia and hyperoxemia following CA were described as potentially harmful, but reports were inconsistent. Current guidelines lack specific oxygen targets after return of spontaneous circulation (ROSC). OBJECTIVES The current meta-analysis assessed the effects of restrictive compared to high-dose oxygenation strategy in survivors of CA. METHODS A structured literature search was performed. Randomized controlled trials (RCTs) comparing two competing oxygenation strategies in post-ROSC management after CA were eligible. The primary end point was short-term survival (≤ 90 days). The meta-analysis was prospectively registered in PROSPERO database (CRD42023444513). RESULTS Eight RCTs enrolling 1941 patients were eligible. Restrictive oxygenation was applied to 964 patients, high-dose regimens were used in 977 participants. Short-term survival rate was 55.7% in restrictive and 56% in high-dose oxygenation group (8 trials, RR 0.99, 95% CI 0.90 to 1.10, P = 0.90, I2 = 18%, no difference). No evidence for a difference was detected in survival to hospital discharge (5 trials, RR 0.98, 95% CI 0.79 to 1.21, P = 0.84, I2 = 32%). Episodes of hypoxemia more frequently occurred in restrictive oxygenation group (4 trials, RR 2.06, 95% CI 1.47 to 2.89, P = 0.004, I2 = 13%). CONCLUSION Restrictive and high-dose oxygenation strategy following CA did not result in differences in short-term or in-hospital survival. Restrictive oxygenation strategy may increase episodes of hypoxemia, even with restrictive oxygenation targets exceeding intended saturation levels, but the clinical relevance is unknown. There is still a wide gap in the evidence of optimized oxygenation in post-ROSC management and specific targets cannot be concluded from the current evidence.
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Affiliation(s)
- S Macherey-Meyer
- Faculty of Medicine and University Hospital Cologne, Clinic III for Internal Medicine, University of Cologne, Kerpener Straße 62, 50937, Cologne, Germany.
| | - S Heyne
- Faculty of Medicine and University Hospital Cologne, Clinic III for Internal Medicine, University of Cologne, Kerpener Straße 62, 50937, Cologne, Germany
| | - M M Meertens
- Faculty of Medicine and University Hospital Cologne, Clinic III for Internal Medicine, University of Cologne, Kerpener Straße 62, 50937, Cologne, Germany
- Center of Cardiology, Cardiology III -Angiology, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
| | - S Braumann
- Faculty of Medicine and University Hospital Cologne, Clinic III for Internal Medicine, University of Cologne, Kerpener Straße 62, 50937, Cologne, Germany
| | - C Hueser
- Faculty of Medicine and University Hospital Cologne, Clinic II for Internal Medicine, University of Cologne, Cologne, Germany
- Faculty of Medicine and University Hospital Cologne, Emergency Department, University of Cologne, Cologne, Germany
| | - V Mauri
- Faculty of Medicine and University Hospital Cologne, Clinic III for Internal Medicine, University of Cologne, Kerpener Straße 62, 50937, Cologne, Germany
| | - S Baldus
- Faculty of Medicine and University Hospital Cologne, Clinic III for Internal Medicine, University of Cologne, Kerpener Straße 62, 50937, Cologne, Germany
| | - S Lee
- Faculty of Medicine and University Hospital Cologne, Clinic III for Internal Medicine, University of Cologne, Kerpener Straße 62, 50937, Cologne, Germany
| | - C Adler
- Faculty of Medicine and University Hospital Cologne, Clinic III for Internal Medicine, University of Cologne, Kerpener Straße 62, 50937, Cologne, Germany
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van der Wal LI, Grim CCA, del Prado MR, van Westerloo DJ, Boerma EC, Rijnhart-de Jong HG, Reidinga AC, Loef BG, van der Heiden PLJ, Sigtermans MJ, Paulus F, Cornet AD, Loconte M, Schoonderbeek FJ, de Keizer NF, Bakhshi-Raiez F, Le Cessie S, Serpa Neto A, Pelosi P, Schultz MJ, Helmerhorst HJF, de Jonge E. Conservative versus Liberal Oxygenation Targets in Intensive Care Unit Patients (ICONIC): A Randomized Clinical Trial. Am J Respir Crit Care Med 2023; 208:770-779. [PMID: 37552556 PMCID: PMC10563190 DOI: 10.1164/rccm.202303-0560oc] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 08/07/2023] [Indexed: 08/10/2023] Open
Abstract
Rationale: Supplemental oxygen is widely administered to ICU patients, but appropriate oxygenation targets remain unclear. Objectives: This study aimed to determine whether a low-oxygenation strategy would lower 28-day mortality compared with a high-oxygenation strategy. Methods: This randomized multicenter trial included mechanically ventilated ICU patients with an expected ventilation duration of at least 24 hours. Patients were randomized 1:1 to a low-oxygenation (PaO2, 55-80 mm Hg; or oxygen saturation as measured by pulse oximetry, 91-94%) or high-oxygenation (PaO2, 110-150 mm Hg; or oxygen saturation as measured by pulse oximetry, 96-100%) target until ICU discharge or 28 days after randomization, whichever came first. The primary outcome was 28-day mortality. The study was stopped prematurely because of the COVID-19 pandemic when 664 of the planned 1,512 patients were included. Measurements and Main Results: Between November 2018 and November 2021, a total of 664 patients were included in the trial: 335 in the low-oxygenation group and 329 in the high-oxygenation group. The median achieved PaO2 was 75 mm Hg (interquartile range, 70-84) and 115 mm Hg (interquartile range, 100-129) in the low- and high-oxygenation groups, respectively. At Day 28, 129 (38.5%) and 114 (34.7%) patients had died in the low- and high-oxygenation groups, respectively (risk ratio, 1.11; 95% confidence interval, 0.9-1.4; P = 0.30). At least one serious adverse event was reported in 12 (3.6%) and 17 (5.2%) patients in the low- and high-oxygenation groups, respectively. Conclusions: Among mechanically ventilated ICU patients with an expected mechanical ventilation duration of at least 24 hours, using a low-oxygenation strategy did not result in a reduction of 28-day mortality compared with a high-oxygenation strategy. Clinical trial registered with the National Trial Register and the International Clinical Trials Registry Platform (NTR7376).
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Affiliation(s)
| | | | | | | | - E. Christiaan Boerma
- Department of Sustainable Health, Campus Fryslân, University of Groningen, Groningen, The Netherlands
- Department of Intensive Care, Medical Center Leeuwarden, Leeuwarden, The Netherlands
| | | | - Auke C. Reidinga
- Department of Intensive Care, Martini Hospital, Groningen, The Netherlands
| | - Bert G. Loef
- Department of Intensive Care, Martini Hospital, Groningen, The Netherlands
| | | | | | | | - Alexander D. Cornet
- Department of Intensive Care, Medisch Spectrum Twente, Enschede, The Netherlands
| | | | | | - Nicolette F. de Keizer
- Department of Medical Informatics, Amsterdam Public Health – Digital Health, Amsterdam University Medical Center, Location AMC, Amsterdam, The Netherlands
| | - Ferishta Bakhshi-Raiez
- Department of Medical Informatics, Amsterdam Public Health – Digital Health, Amsterdam University Medical Center, Location AMC, Amsterdam, The Netherlands
| | - Saskia Le Cessie
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Ary Serpa Neto
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
- Department of Critical Care Medicine, Albert Einstein Israelite Hospital, São Paulo, Brazil
- Department of Intensive Care, Austin Hospital, Melbourne, Australia
| | - Paolo Pelosi
- Department of Anesthesiology and Intensive Care and
- Department of Surgical Sciences and Integrated Diagnostics, San Martino Policlinico Hospital, Scientific Institute for Research, Hospitalization and Healthcare for Oncology and Neurosciences, Genoa, Italy
| | - Marcus J. Schultz
- Department of Intensive Care and
- Mahidol – Oxford Tropical Medicine Research Unit, Mahidol University, Bangkok, Thailand; and
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
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Klitgaard TL, Schjørring OL, Nielsen FM, Meyhoff CS, Perner A, Wetterslev J, Rasmussen BS, Barbateskovic M. Higher versus lower fractions of inspired oxygen or targets of arterial oxygenation for adults admitted to the intensive care unit. Cochrane Database Syst Rev 2023; 9:CD012631. [PMID: 37700687 PMCID: PMC10498149 DOI: 10.1002/14651858.cd012631.pub3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
BACKGROUND This is an updated review concerning 'Higher versus lower fractions of inspired oxygen or targets of arterial oxygenation for adults admitted to the intensive care unit'. Supplementary oxygen is provided to most patients in intensive care units (ICUs) to prevent global and organ hypoxia (inadequate oxygen levels). Oxygen has been administered liberally, resulting in high proportions of patients with hyperoxemia (exposure of tissues to abnormally high concentrations of oxygen). This has been associated with increased mortality and morbidity in some settings, but not in others. Thus far, only limited data have been available to inform clinical practice guidelines, and the optimum oxygenation target for ICU patients is uncertain. Because of the publication of new trial evidence, we have updated this review. OBJECTIVES To update the assessment of benefits and harms of higher versus lower fractions of inspired oxygen (FiO2) or targets of arterial oxygenation for adults admitted to the ICU. SEARCH METHODS We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, Science Citation Index Expanded, BIOSIS Previews, and LILACS. We searched for ongoing or unpublished trials in clinical trial registers and scanned the reference lists and citations of included trials. Literature searches for this updated review were conducted in November 2022. SELECTION CRITERIA We included randomised controlled trials (RCTs) that compared higher versus lower FiO2 or targets of arterial oxygenation (partial pressure of oxygen (PaO2), peripheral or arterial oxygen saturation (SpO2 or SaO2)) for adults admitted to the ICU. We included trials irrespective of publication type, publication status, and language. We excluded trials randomising participants to hypoxaemia (FiO2 below 0.21, SaO2/SpO2 below 80%, or PaO2 below 6 kPa) or to hyperbaric oxygen, and cross-over trials and quasi-randomised trials. DATA COLLECTION AND ANALYSIS Four review authors independently, and in pairs, screened the references identified in the literature searches and extracted the data. Our primary outcomes were all-cause mortality, the proportion of participants with one or more serious adverse events (SAEs), and quality of life. We analysed all outcomes at maximum follow-up. Only three trials reported the proportion of participants with one or more SAEs as a composite outcome. However, most trials reported on events categorised as SAEs according to the International Conference on Harmonisation Good Clinical Practice (ICH-GCP) criteria. We, therefore, conducted two analyses of the effect of higher versus lower oxygenation strategies using 1) the single SAE with the highest reported proportion in each trial, and 2) the cumulated proportion of participants with an SAE in each trial. Two trials reported on quality of life. Secondary outcomes were lung injury, myocardial infarction, stroke, and sepsis. No trial reported on lung injury as a composite outcome, but four trials reported on the occurrence of acute respiratory distress syndrome (ARDS) and five on pneumonia. We, therefore, conducted two analyses of the effect of higher versus lower oxygenation strategies using 1) the single lung injury event with the highest reported proportion in each trial, and 2) the cumulated proportion of participants with ARDS or pneumonia in each trial. We assessed the risk of systematic errors by evaluating the risk of bias in the included trials using the Risk of Bias 2 tool. We used the GRADEpro tool to assess the overall certainty of the evidence. We also evaluated the risk of publication bias for outcomes reported by 10b or more trials. MAIN RESULTS We included 19 RCTs (10,385 participants), of which 17 reported relevant outcomes for this review (10,248 participants). For all-cause mortality, 10 trials were judged to be at overall low risk of bias, and six at overall high risk of bias. For the reported SAEs, 10 trials were judged to be at overall low risk of bias, and seven at overall high risk of bias. Two trials reported on quality of life, of which one was judged to be at overall low risk of bias and one at high risk of bias for this outcome. Meta-analysis of all trials, regardless of risk of bias, indicated no significant difference from higher or lower oxygenation strategies at maximum follow-up with regard to mortality (risk ratio (RR) 1.01, 95% confidence interval (C)I 0.96 to 1.06; I2 = 14%; 16 trials; 9408 participants; very low-certainty evidence); occurrence of SAEs: the highest proportion of any specific SAE in each trial RR 1.01 (95% CI 0.96 to 1.06; I2 = 36%; 9466 participants; 17 trials; very low-certainty evidence), or quality of life (mean difference (MD) 0.5 points in participants assigned to higher oxygenation strategies (95% CI -2.75 to 1.75; I2 = 34%, 1649 participants; 2 trials; very low-certainty evidence)). Meta-analysis of the cumulated number of SAEs suggested benefit of a lower oxygenation strategy (RR 1.04 (95% CI 1.02 to 1.07; I2 = 74%; 9489 participants; 17 trials; very low certainty evidence)). However, trial sequential analyses, with correction for sparse data and repetitive testing, could reject a relative risk increase or reduction of 10% for mortality and the highest proportion of SAEs, and 20% for both the cumulated number of SAEs and quality of life. Given the very low-certainty of evidence, it is necessary to interpret these findings with caution. Meta-analysis of all trials indicated no statistically significant evidence of a difference between higher or lower oxygenation strategies on the occurrence of lung injuries at maximum follow-up (the highest reported proportion of lung injury RR 1.08, 95% CI 0.85 to 1.38; I2 = 0%; 2048 participants; 8 trials; very low-certainty evidence). Meta-analysis of all trials indicated harm from higher oxygenation strategies as compared with lower on the occurrence of sepsis at maximum follow-up (RR 1.85, 95% CI 1.17 to 2.93; I2 = 0%; 752 participants; 3 trials; very low-certainty evidence). Meta-analysis indicated no differences regarding the occurrences of myocardial infarction or stroke. AUTHORS' CONCLUSIONS In adult ICU patients, it is still not possible to draw clear conclusions about the effects of higher versus lower oxygenation strategies on all-cause mortality, SAEs, quality of life, lung injuries, myocardial infarction, stroke, and sepsis at maximum follow-up. This is due to low or very low-certainty evidence.
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Affiliation(s)
- Thomas L Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Olav L Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Frederik M Nielsen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Christian S Meyhoff
- Department of Anaesthesia and Intensive Care, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Anders Perner
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Jørn Wetterslev
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Private Office, Hellerup, Denmark
| | - Bodil S Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Marija Barbateskovic
- Copenhagen Trial Unit, Centre for Clinical Intervention Research, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
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Ehrenreich H, Gassmann M, Poustka L, Burtscher M, Hammermann P, Sirén AL, Nave KA, Miskowiak K. Exploiting moderate hypoxia to benefit patients with brain disease: Molecular mechanisms and translational research in progress. NEUROPROTECTION 2023; 1:9-19. [PMID: 37671067 PMCID: PMC7615021 DOI: 10.1002/nep3.15] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 11/17/2022] [Indexed: 09/07/2023]
Abstract
Hypoxia is increasingly recognized as an important physiological driving force. A specific transcriptional program, induced by a decrease in oxygen (O2) availability, for example, inspiratory hypoxia at high altitude, allows cells to adapt to lower O2 and limited energy metabolism. This transcriptional program is partly controlled by and partly independent of hypoxia-inducible factors. Remarkably, this same transcriptional program is stimulated in the brain by extensive motor-cognitive exercise, leading to a relative decrease in O2 supply, compared to the acutely augmented O2 requirement. We have coined the term "functional hypoxia" for this important demand-responsive, relative reduction in O2 availability. Functional hypoxia seems to be critical for enduring adaptation to higher physiological challenge that includes substantial "brain hardware upgrade," underlying advanced performance. Hypoxia-induced erythropoietin expression in the brain likely plays a decisive role in these processes, which can be imitated by recombinant human erythropoietin treatment. This article review presents hints of how inspiratory O2 manipulations can potentially contribute to enhanced brain function. It thereby provides the ground for exploiting moderate inspiratory plus functional hypoxia to treat individuals with brain disease. Finally, it sketches a planned multistep pilot study in healthy volunteers and first patients, about to start, aiming at improved performance upon motor-cognitive training under inspiratory hypoxia.
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Affiliation(s)
- Hannelore Ehrenreich
- Clinical Neuroscience, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Max Gassmann
- Institute of Veterinary Physiology and Zürich Center for Integrative Human Physiology, University of Zürich, Zürich, Switzerland
| | - Luise Poustka
- Department of Child and Adolescent Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany
| | - Martin Burtscher
- Faculty of Sports Science, University of Innsbruck, Innsbruck, Austria
| | | | - Anna-Leena Sirén
- Departments of Neurophysiology and Neurosurgery, University of Würzburg, Würzburg, Germany
| | - Klaus-Armin Nave
- Department of Neurogenetics, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Kamilla Miskowiak
- Psychiatric Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Psychology, University of Copenhagen, Copenhagen, Denmark
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Burrell A, Ng S, Ottosen K, Bailey M, Buscher H, Fraser J, Udy A, Gattas D, Totaro R, Bellomo R, Forrest P, Martin E, Reid L, Ziegenfuss M, Eastwood G, Higgins A, Hodgson C, Litton E, Nair P, Orford N, Pellegrino V, Shekar K, Trapani T, Pilcher D. Blend to Limit OxygEN in ECMO: A RanDomised ControllEd Registry (BLENDER) Trial: Study Protocol and Statistical Analysis Plan. CRIT CARE RESUSC 2023; 25:118-125. [PMID: 37876374 PMCID: PMC10581278 DOI: 10.1016/j.ccrj.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Introduction Critically ill patients supported with venoarterial extracorporeal membrane oxygenation (VA ECMO) are at risk of developing severe arterial hyperoxia, which has been associated with increased mortality. Lower saturation targets in this population may lead to deleterious episodes of severe hypoxia. This manuscript describes the protocol and statistical analysis plan for the Blend to Limit OxygEN in ECMO: A RanDomised ControllEd Registry (BLENDER) Trial. Design The BLENDER trial is a pragmatic, multicentre, registry-embedded, randomised clinical trial., registered at ClinicalTrials.gov (NCT03841084) and approved by The Alfred Hospital Ethics Committee project ID HREC/50486/Alfred-2019. Participants and setting Patients supported by VA ECMO for cardiogenic shock or cardiac arrest who are enrolled in the Australian national ECMO registry. Intervention The study compares a conservative oxygenation strategy (target arterial saturations 92-96%) with a liberal oxygenation strategy (target 97-100%). Main Outcome Measures The primary outcome is the number of intensive care unit (ICU)-free days for patients alive at day 60. Secondary outcomes include duration of mechanical ventilation, ICU and hospital mortality, the number of hypoxic episodes, neurocognitive outcomes, and health economic analyses. The 300-patient sample size enables us to detect a 3-day difference in ICU-free days at day 60, assuming a mean ICU-free days of 11 days, with a risk of type 1 error of 5% and power of 80%. Data will be analysed according to a predefined analysis plan. Findings will be disseminated in peer-reviewed publications. Conclusions This paper details the protocol and statistical analysis plan for the BLENDER trial, a registry-embedded, multicentre interventional trial comparing liberal and conservative oxygenation strategies in VA ECMO.
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Affiliation(s)
- Aidan Burrell
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
- Department of Intensive Care and Hyperbaric Medicine, The Alfred, Melbourne, VIC, Australia
| | - Sze Ng
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Kelly Ottosen
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Michael Bailey
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
- Department of Critical Care, School of Medicine, University of Melbourne, VIC, Australia
| | - Hergen Buscher
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
- St. Vincent's Hospital Sydney, University of New South Wales, Darlinghurst, NSW, Australia
| | - John Fraser
- Critical Care Research Group, Brisbane, QLD, Australia
- Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Andrew Udy
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
- Department of Intensive Care and Hyperbaric Medicine, The Alfred, Melbourne, VIC, Australia
| | - David Gattas
- Intensive Care Unit, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
- Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Richard Totaro
- Intensive Care Unit, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
- Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Rinaldo Bellomo
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
- Department of Critical Care, School of Medicine, University of Melbourne, VIC, Australia
- Data Analytics Research and Evaluation (DARE) Centre, Austin Hospital, Melbourne, VIC, Australia
| | - Paul Forrest
- Sydney Medical School, University of Sydney, Sydney, NSW, Australia
- Department of Anaesthetics, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Emma Martin
- Department of Intensive Care and Hyperbaric Medicine, The Alfred, Melbourne, VIC, Australia
| | - Liadain Reid
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Marc Ziegenfuss
- Critical Care Research Group, Brisbane, QLD, Australia
- Adult Intensive Care Unit, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - Glenn Eastwood
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
- Department of Intensive Care, Austin Hospital, Melbourne, VIC, Australia
| | - Alisa Higgins
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Carol Hodgson
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
- Department of Intensive Care and Hyperbaric Medicine, The Alfred, Melbourne, VIC, Australia
- Department of Critical Care, School of Medicine, University of Melbourne, VIC, Australia
| | - Edward Litton
- Intensive Care Unit, Fiona Stanley Hospital, Murdoch, WA, Australia
| | - Priya Nair
- Intensive Care Unit, St Vincent's Hospital, Darlinghurst, NSW, Australia
| | - Neil Orford
- Intensive Care Unit, University Hospital Geelong, Barwon Health, Geelong, VIC, Australia
- School of Medicine, Deakin University, Waurn Ponds, VIC, Australia
| | - Vince Pellegrino
- Department of Intensive Care and Hyperbaric Medicine, The Alfred, Melbourne, VIC, Australia
| | - Kiran Shekar
- Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Adult Intensive Care Unit, The Prince Charles Hospital, Brisbane, QLD, Australia
| | - Tony Trapani
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - David Pilcher
- Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
- Department of Intensive Care and Hyperbaric Medicine, The Alfred, Melbourne, VIC, Australia
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50
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Cheema HA, Shafiee A, Akhondi A, Seighali N, Shahid A, Rehman MEU, Almas T, Hadeed S, Nashwan AJ, Ahmad S. Oxygen targets following cardiac arrest: A meta-analysis of randomized controlled trials. IJC HEART & VASCULATURE 2023; 47:101243. [PMID: 37484065 PMCID: PMC10359856 DOI: 10.1016/j.ijcha.2023.101243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 07/25/2023]
Abstract
Introduction The appropriate oxygen target post-resuscitation in out-of-hospital cardiac arrest (OHCA) patients is uncertain. We sought to compare lower versus higher oxygen targets in patients following OHCA. Methods We searched MEDLINE, Embase, the Cochrane Library, and ClinicalTrials.gov until January 2023 to include all randomized controlled trials (RCTs) that evaluated conservative vs. liberal oxygen therapy in OHCA patients. Our primary outcome was all-cause mortality at 90 days while our secondary outcomes were the level of neuron-specific enolase (NSE) at 48 h, ICU length of stay (LOS), and favorable neurological outcome (the proportion of patients with Cerebral Performance Category scores of 1-2 at end of follow-up). We used RevMan 5.4 to pool risk ratios (RRs) and mean differences (MDs). Results Nine trials with 1971 patients were included in our review. There was no significant difference between the conservative and liberal oxygen target groups regarding the rate of all-cause mortality (RR 0.95, 95% CI: 0.80 to 1.13; I2 = 55%). There were no significant differences between the two groups when assessing favorable neurological outcome (RR 1.01, 95% CI: 0.92 to 1.10; I2 = 4%), NSE at 48 h (MD 0.04, 95% CI: -0.67 to 0.76; I2 = 0%), and ICU length of stay (MD -2.86 days, 95% CI: -8.00 to 2.29 days; I2 = 0%). Conclusions Conservative oxygen therapy did not decrease mortality, improve neurologic recovery, or decrease ICU LOS as compared to a liberal oxygen regimen. Future large-scale RCTs comparing homogenous oxygen targets are needed to confirm these findings.
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Affiliation(s)
| | - Arman Shafiee
- Clinical Research Development Unit, Alborz University of Medical Sciences, Karaj, Iran
- Student Research Committee, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Amirhossein Akhondi
- Student Research Committee, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Niloofar Seighali
- Student Research Committee, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Abia Shahid
- Department of Cardiology, King Edward Medical University, Lahore, Pakistan
| | | | - Talal Almas
- Department of Cardiovascular Medicine, Galway University Hospital, Galway, Ireland
| | - Sebastian Hadeed
- Department of Internal Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
| | | | - Soban Ahmad
- Department of Internal Medicine, East Carolina University, Greenville, NC, USA
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