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Nielsen FM, Klitgaard TL, Granholm A, Lange T, Perner A, Schjørring OL, Rasmussen BS. Lower or Higher Oxygenation Targets in Patients With COVID-19 in the ICU: A Secondary Bayesian Analysis of the Handling Oxygenation Targets in COVID-19 Trial. Chest 2024:S0012-3692(24)05164-X. [PMID: 39303806 DOI: 10.1016/j.chest.2024.08.055] [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: 03/23/2024] [Revised: 08/23/2024] [Accepted: 08/27/2024] [Indexed: 09/22/2024] Open
Abstract
BACKGROUND In the Handling Oxygenation Targets in COVID-19 (HOT-COVID) trial, a Pao2 target of 60 mm Hg compared with 90 mm Hg resulted in more days alive without life support at 90 days in adults in the ICU with COVID-19 and hypoxemia. The trial was stopped after enrolling 726 of 780 planned patients because of slow recruitment. Herein, we present the preplanned Bayesian analysis of the HOT-COVID trial. RESEARCH QUESTION What are the probabilities of any benefits and of clinically relevant benefits resulting from a Pao2 target of 60 mm Hg vs 90 mm Hg in adult patients with COVID-19 and hypoxemia in the ICU and does heterogeneity of treatment effects (HTE) exist according to selected baseline characteristics?. STUDY DESIGN AND METHODS We analyzed days alive without life support and 90-day mortality in the HOT-COVID intention-to-treat population (n = 697) using Bayesian general linear models to assess probabilities for benefit or harm, including clinically relevant benefits defined as > 1 day alive without life support and > 2 percentage points lower 90-day mortality. HTE was evaluated based on baseline Sequential Organ Failure Assessment scores, Pao2 to Fio2 ratio, norepinephrine doses, and lactate concentrations. RESULTS The mean difference in days alive without life support was 5.7 days (95% credible interval [CrI], 0.2-11.2), with a 95.2% probability of clinically relevant benefit and a 98.0% probability of any benefit from the lower Pao2 target. The risk difference in 90-day mortality was -4.6 percentage points (95% CrI, -11.8 to 2.6 percentage points), with a 76.5% probability of a clinically relevant benefit from the lower target. HTE analyses revealed potential interaction with baseline norepinephrine dose and lactate concentrations for both outcomes. INTERPRETATION In patients with COVID-19 and hypoxemia in the ICU, we found a high probability for a clinically relevant benefit of targeting a Pao2 of 60 mm Hg vs 90 mm Hg on number of days alive without life support. CLINICAL TRIAL REGISTRY ClinicalTrials.gov; No.: NCT04425031; URL: www. CLINICALTRIALS gov.
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Affiliation(s)
- Frederik Mølgaard Nielsen
- Department of Anesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark; Collaboration for Research in Intensive Care, Copenhagen, Denmark.
| | - Thomas Lass Klitgaard
- Department of Anesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark; Collaboration for Research in Intensive Care, Copenhagen, Denmark
| | - Anders Granholm
- Collaboration for Research in Intensive Care, Copenhagen, Denmark; Department of Intensive Care, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Theis Lange
- Collaboration for Research in Intensive Care, Copenhagen, Denmark; Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Anders Perner
- Collaboration for Research in Intensive Care, Copenhagen, Denmark; Department of Intensive Care, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Olav Lilleholt Schjørring
- Department of Anesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark; Collaboration for Research in Intensive Care, Copenhagen, Denmark
| | - Bodil Steen Rasmussen
- Department of Anesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark; Collaboration for Research in Intensive Care, Copenhagen, Denmark
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Granholm A, Munch MW, Meier N, Sjövall F, Helleberg M, Hertz FB, Kaas-Hansen BS, Thorsen-Meyer HC, Andersen LW, Rasmussen BS, Andersen JS, Albertsen TL, Kjær MBN, Jensen AKG, Lange T, Perner A, Møller MH. Empirical meropenem versus piperacillin/tazobactam for adult patients with sepsis (EMPRESS) trial: Protocol. Acta Anaesthesiol Scand 2024; 68:1107-1119. [PMID: 38769040 DOI: 10.1111/aas.14441] [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: 04/16/2024] [Accepted: 04/30/2024] [Indexed: 05/22/2024]
Abstract
BACKGROUND Piperacillin/tazobactam may be associated with less favourable outcomes than carbapenems in patients with severe bacterial infections, but the certainty of evidence is low. METHODS The Empirical Meropenem versus Piperacillin/Tazobactam for Adult Patients with Sepsis (EMPRESS) trial is an investigator-initiated, international, parallel-group, randomised, open-label, adaptive clinical trial with an integrated feasibility phase. We will randomise adult, critically ill patients with sepsis to empirical treatment with meropenem or piperacillin/tazobactam for up to 30 days. The primary outcome is 30-day all-cause mortality. The secondary outcomes are serious adverse reactions within 30 days; isolation precautions due to resistant bacteria within 30 days; days alive without life support and days alive and out of hospital within 30 and 90 days; 90- and 180-day all-cause mortality and 180-day health-related quality of life. EMPRESS will use Bayesian statistical models with weak to somewhat sceptical neutral priors. Adaptive analyses will be conducted after follow-up of the primary outcome for the first 400 participants concludes and after every 300 subsequent participants, with adaptive stopping for superiority/inferiority and practical equivalence (absolute risk difference <2.5%-points) and response-adaptive randomisation. The expected sample sizes in scenarios with no, small or large differences are 5189, 5859 and 2570 participants, with maximum 14,000 participants and ≥99% probability of conclusiveness across all scenarios. CONCLUSIONS EMPRESS will compare the effects of empirical meropenem against piperacillin/tazobactam in adult, critically ill patients with sepsis. Due to the pragmatic, adaptive design with high probability of conclusiveness, the trial results are expected to directly inform clinical practice.
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Affiliation(s)
- Anders Granholm
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Marie Warrer Munch
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Nick Meier
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Fredrik Sjövall
- Department of Intensive and Perioperative Care, Skåne University Hospital, Malmö, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Marie Helleberg
- Department of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Infectious Diseases, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Centre of Excellence for Health, Immunity and Infections, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
| | - Frederik Boëtius Hertz
- Department of Clinical Microbiology, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Department of Immunology & Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Benjamin Skov Kaas-Hansen
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Hans-Christian Thorsen-Meyer
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Lars Wiuff Andersen
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark
- Prehospital Emergency Medical Services, Aarhus, Denmark
| | - Bodil Steen Rasmussen
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Jakob Steen Andersen
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
| | | | - Maj-Brit Nørregaard Kjær
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Aksel Karl Georg Jensen
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Theis Lange
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Anders Perner
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Morten Hylander Møller
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
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Sivapalan P, Kaas-Hansen BS, Meyhoff TS, Hjortrup PB, Kjær MBN, Laake JH, Cronhjort M, Jakob SM, Cecconi M, Nalos M, Ostermann M, Malbrain MLNG, Møller MH, Perner A, Granholm A. Effects of IV fluid restriction according to site-specific intensity of standard fluid treatment-protocol. Acta Anaesthesiol Scand 2024; 68:975-982. [PMID: 38576165 DOI: 10.1111/aas.14423] [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: 03/08/2024] [Accepted: 03/20/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND Variation in usual practice in fluid trials assessing lower versus higher volumes may affect overall comparisons. To address this, we will evaluate the effects of heterogeneity in treatment intensity in the Conservative versus Liberal Approach to Fluid Therapy of Septic Shock in Intensive Care trial. This will reflect the effects of differences in site-specific intensities of standard fluid treatment due to local practice preferences while considering participant characteristics. METHODS We will assess the effects of heterogeneity in treatment intensity across one primary (all-cause mortality) and three secondary outcomes (serious adverse events or reactions, days alive without life support and days alive out of hospital) after 90 days. We will classify sites based on the site-specific intensity of standard fluid treatment, defined as the mean differences in observed versus predicted intravenous fluid volumes in the first 24 h in the standard-fluid group while accounting for differences in participant characteristics. Predictions will be made using a machine learning model including 22 baseline predictors using the extreme gradient boosting algorithm. Subsequently, sites will be grouped into fluid treatment intensity subgroups containing at least 100 participants each. Subgroups differences will be assessed using hierarchical Bayesian regression models with weakly informative priors. We will present the full posterior distributions of relative (risk ratios and ratios of means) and absolute differences (risk differences and mean differences) in each subgroup. DISCUSSION This study will provide data on the effects of heterogeneity in treatment intensity while accounting for patient characteristics in critically ill adult patients with septic shock. REGISTRATIONS The European Clinical Trials Database (EudraCT): 2018-000404-42, ClinicalTrials. gov: NCT03668236.
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Affiliation(s)
- Praleene Sivapalan
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Benjamin Skov Kaas-Hansen
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Public Health, Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark
| | - Tine Sylvest Meyhoff
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Anaesthesia and Intensive Care, Lillebælt Hospital, Kolding, Denmark
| | - Peter Buhl Hjortrup
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Cardiothoracic Anaesthesia and Intensive Care, The Heart Center, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
| | - Maj-Brit N Kjær
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Jon Henrik Laake
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Anaesthesiology and Intensive Care Medicine, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
| | - Maria Cronhjort
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Stephan M Jakob
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- University of Bern, Bern, Switzerland
| | - Maurizio Cecconi
- Biomedical Sciences Department, Humanitas University, Pieve Emanuele, Italy
- Department of Anaesthesia and Intensive Care, IRCCS-Humanitas Research Hospital, Milan, Italy
| | - Marek Nalos
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Anaesthesiology, Perioperative and Intensive Care Medicine, Masaryk Hospital, J.E. Purkinje University, Usti nad Labem, Czech Republic
| | - Marlies Ostermann
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Intensive Care, Guy's and St Thomas' Hospital, London, UK
| | - Manu L N G Malbrain
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- First Department of Anaesthesiology and Intensive Therapy, Medical University of Lublin, Lublin, Poland
| | - Morten Hylander Møller
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
| | - Anders Perner
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
| | - Anders Granholm
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, 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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Selby JV, Maas CCHM, Fireman BH, Kent DM. Impact of the PATH Statement on Analysis and Reporting of Heterogeneity of Treatment Effect in Clinical Trials: A Scoping Review. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.05.06.24306774. [PMID: 38766150 PMCID: PMC11100853 DOI: 10.1101/2024.05.06.24306774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Background The Predictive Approaches to Treatment Effect Heterogeneity (PATH) Statement provides guidance for using predictive modeling to identify differences (i.e., heterogeneity) in treatment effects (benefits and harms) among participants in randomized clinical trials (RCTs). It distinguished risk modeling, which uses a multivariable model to predict risk of trial outcome(s) and then examines treatment effects within strata of predicted risk, from effect modeling, which predicts trial outcomes using models that include treatment, individual participant characteristics and interactions of treatment with selected characteristics. Purpose To describe studies of heterogeneous treatment effects (HTE) that use predictive modeling in RCT data and cite the PATH Statement. Data Sources The Cited By functions in PubMed, Google Scholar, Web of Science and SCOPUS databases (Jan 7, 2020 - June 5, 2023). Study Selection 42 reports presenting 45 predictive models. Data Extraction Double review with adjudication to identify risk and effect modeling and examine consistency with Statement consensus statements. Credibility of HTE findings was assessed using criteria adapted from the Instrument to assess Credibility of Effect Modification Analyses (ICEMAN). Clinical importance of credible HTE findings was also assessed. Data Synthesis The numbers of reports, especially risk modeling reports, increased year-on-year. Consistency with consensus statements was high, except for two: only 15 of 32 studies with positive overall findings included a risk model; and most effect models explored many candidate covariates with little prior evidence for effect modification. Risk modeling was more likely than effect modeling to identify both credible HTE (14/19 vs 5/26) and clinically important HTE (10/19 vs 4/26). Limitations Risk of reviewer bias: reviewers assessing credibility and clinical importance were not blinded to adherence to PATH recommendations. Conclusions The PATH Statement appears to be influencing research practice. Risk modeling often uncovered clinically important HTE; effect modeling was more often exploratory.
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Affiliation(s)
- Joe V Selby
- Division of Research, Kaiser Permanente Northern California, Oakland, CA (emeritus)
| | - Carolien C H M Maas
- Tufts Predictive Analytics and Comparative Effectiveness Center, Tufts University School of Medicine, Boston MA
- Department of Public Health, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Bruce H Fireman
- Division of Research, Kaiser Permanente Northern California, Oakland, CA
| | - David M Kent
- Tufts Predictive Analytics and Comparative Effectiveness Center, Tufts University School of Medicine, Boston MA
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Grand J, Wiberg S, Kjaergaard J, Hassager C, Schmidt H, Møller JE, Mølstrøm S, Granholm A. Lower versus higher blood pressure targets in comatose patients resuscitated from out-of-hospital cardiac arrest-Protocol for a secondary Bayesian analysis of the box trial. Acta Anaesthesiol Scand 2024; 68:702-707. [PMID: 38380494 DOI: 10.1111/aas.14392] [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: 01/22/2024] [Accepted: 02/06/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND The management of blood pressure targets during intensive care after out-of-hospital cardiac arrest (OHCA) remains a topic of debate. The blood Pressure and Oxygenation Targets After OHCA (BOX) trial explored the efficacy of two different blood pressure targets in 789 patients during intensive care after OHCA. In the primary frequentist analysis, no statistically significant differences were found for neurological outcome after 90 days. METHODS This protocol outlines secondary Bayesian analyses of 365-day all-cause mortality and two secondary outcomes: neurological outcome after 365 days, and plasma neuron-specific enolase, a biomarker of brain injury, after 48 h. We will employ adjusted Bayesian logistic and linear regressions, presenting results as relative and absolute differences with 95% confidence intervals. We will use weakly informative priors for the primary analyses, and skeptical and evidence-based priors (where available) in sensitivity analyses. Exact probabilities for any benefit/harm will be presented for all outcomes, along with probabilities of clinically important benefit/harm (risk differences larger than 2%-points absolute) and no clinically important differences for the binary outcomes. We will assess whether heterogeneity of treatment effects on mortality is present according to lactate at admission, time to return of spontaneous circulation, primary shockable rhythm, age, hypertension, and presence of ST-elevation myocardial infarction. DISCUSSION This secondary analysis of the BOX trial aim to complement the primary frequentist analysis by quantifying the probabilities of beneficial or harmful effects of different blood pressure targets. This approach seeks to provide clearer insights for researchers and clinicians into the effectiveness of these blood pressure management strategies in acute medical conditions, particularly focusing on mortality, neurological outcomes, and neuron-specific enolase.
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Affiliation(s)
- Johannes Grand
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Cardiology, Copenhagen University Hospital, Hvidovre and Amager Hospital, Copenhagen, Denmark
| | - Sebastian Wiberg
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jesper Kjaergaard
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Christian Hassager
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Henrik Schmidt
- Department of Anesthesiology and Intensive Care, Odense University Hospital, Odense, Denmark
| | - Jacob E Møller
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Cardiology, Odense University Hospital, Denmark and Clinical Institute University of Southern Denmark, Odense, Denmark
| | - Simon Mølstrøm
- Department of Anesthesiology and Intensive Care, Odense University Hospital, Odense, Denmark
| | - Anders Granholm
- Department of Intensive Care, Copenhagen University Hospital, Copenhagen, Denmark
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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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Sivapalan P, Meyhoff TS, Hjortrup PB, Lange T, Kaas-Hansen BS, Kjaer MBN, Laake JH, Cronhjort M, Jakob SM, Cecconi M, Nalos M, Ostermann M, Malbrain MLNG, Møller MH, Perner A, Granholm A. Restrictive versus standard IV fluid therapy in adult ICU patients with septic shock-Bayesian analyses of the CLASSIC trial. Acta Anaesthesiol Scand 2024; 68:236-246. [PMID: 37869991 DOI: 10.1111/aas.14345] [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: 08/30/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 10/24/2023]
Abstract
BACKGROUND The CLASSIC trial assessed the effects of restrictive versus standard intravenous (IV) fluid therapy in adult intensive care unit (ICU) patients with septic shock. This pre-planned study provides a probabilistic interpretation and evaluates heterogeneity in treatment effects (HTE). METHODS We analysed mortality, serious adverse events (SAEs), serious adverse reactions (SARs) and days alive without life-support within 90 days using Bayesian models with weakly informative priors. HTE on mortality was assessed according to five baseline variables: disease severity, vasopressor dose, lactate levels, creatinine values and IV fluid volumes given before randomisation. RESULTS The absolute difference in mortality was 0.2%-points (95% credible interval: -5.0 to 5.4; 47% posterior probability of benefit [risk difference <0.0%-points]) with restrictive IV fluid. The posterior probabilities of benefits with restrictive IV fluid were 72% for SAEs, 52% for SARs and 61% for days alive without life-support. The posterior probabilities of no clinically important differences (absolute risk difference ≤2%-points) between the groups were 56% for mortality, 49% for SAEs, 90% for SARs and 38% for days alive without life-support. There was 97% probability of HTE for previous IV fluid volumes analysed continuously, that is, potentially relatively lower mortality of restrictive IV fluids with higher previous IV fluids. No substantial evidence of HTE was found in the other analyses. CONCLUSION We could not rule out clinically important effects of restrictive IV fluid therapy on mortality, SAEs or days alive without life-support, but substantial effects on SARs were unlikely. IV fluids given before randomisation might interact with IV fluid strategy.
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Affiliation(s)
- Praleene Sivapalan
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Deptartment of Clinical Medicine, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Tine Sylvest Meyhoff
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Peter Buhl Hjortrup
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Cardiothoracic Anaesthesia and Intensive Care, The Heart Center, Copenhagen University Hospital-Rigshospitalet Copenhagen, Copenhagen, Denmark
| | - Theis Lange
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Public Health, Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark
| | - Benjamin Skov Kaas-Hansen
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Public Health, Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark
| | - Maj-Brit N Kjaer
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Deptartment of Clinical Medicine, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Jon Henrik Laake
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Intensive Care, Oslo University Hospital, Oslo, Norway
| | - Maria Cronhjort
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Clinical sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
| | | | - Maurizio Cecconi
- Biomedical Sciences Department, Humanitas University, Milan, Italy
- Department of Anaesthesia and Intensive Care, IRCCS-Humanitas Research Hospital, Milan, Italy
| | - Marek Nalos
- Department of Intensive Care, University Hospital Pilsen, Pilsen, Czech Republic
| | - Marlies Ostermann
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Intensive Care, Guy's and St Thomas' Hospital, London, UK
| | - Manu L N G Malbrain
- First Department of Anaesthesiology and Intensive Therapy, Medical University of Lublin, Lublin, Poland
| | - Morten Hylander Møller
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Deptartment of Clinical Medicine, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Anders Perner
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Deptartment of Clinical Medicine, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Anders Granholm
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Deptartment of Clinical Medicine, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
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9
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Tigano S, Caruso A, Liotta C, LaVia L, Vargas M, Romagnoli S, Landoni G, Sanfilippo F. Exposure to severe hyperoxemia worsens survival and neurological outcome in patients supported by veno-arterial extracorporeal membrane oxygenation: A meta-analysis. Resuscitation 2024; 194:110071. [PMID: 38061577 DOI: 10.1016/j.resuscitation.2023.110071] [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: 09/21/2023] [Revised: 11/14/2023] [Accepted: 11/16/2023] [Indexed: 01/16/2024]
Abstract
BACKGROUND Veno-arterial Extracorporeal Membrane Oxygenation (VA-ECMO) is a rescue treatment in refractory cardiogenic shock (CS) or refractory cardiac arrest (CA). Exposure to hyperoxemia is common during VA-ECMO, and its impact on patient's outcome remains unclear. METHODS We conducted a systematic review (PubMed and Scopus) and meta-analysis investigating the effects of exposure to severe hyperoxemia on mortality and poor neurological outcome in patients supported by VA-ECMO. When both adjusted and unadjusted Odds Ratio (OR) were provided, we used the adjusted one. Results are reported as OR and 95% confidence interval (CI). Subgroup analyses were conducted according to VA-ECMO indication and hyperoxemia thresholds. RESULTS Data from 10 observational studies were included. Nine studies reported data on mortality (n = 5 refractory CA, n = 4 CS), and 4 on neurological outcome. As compared to normal oxygenation levels, exposure to severe hyperoxemia was associated with higher mortality (nine studies; OR: 1.80 [1.16-2.78]; p = 0.009; I2 = 83%; low certainty of evidence) and worse neurological outcome (four studies; OR: 1.97 [1.30-2.96]; p = 0.001; I2 = 0%; low certainty of evidence). Magnitude and effect of these findings remained valid in subgroup analyses conducted according to different hyperoxemia thresholds (>200 or >300 mmHg) and VA-ECMO indication, although the association with mortality remained uncertain in the refractory CA population (p = 0.13). Analysis restricted to studies providing adjusted OR data confirmed an increased likelihood of poorer neurological outcome (three studies; OR: 2.11 [1.32-3.38]; p = 0.002) in patients exposed to severe hyperoxemia but did not suggest higher mortality (five studies; OR: 1.68 [0.89-3.18]; p = 0.11). CONCLUSIONS Severe hyperoxemia exposure after initiation of VA-ECMO may be associated with an almost doubled increased probability of poor neurological outcome and mortality. Clinical efforts should be made to avoid severe hyperoxemia during VA-ECMO support.
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Affiliation(s)
- Stefano Tigano
- School of Anaesthesia and Intensive Care, University Hospital "G. Rodolico", University of Catania, Catania, Italy
| | - Alessandro Caruso
- School of Anaesthesia and Intensive Care, University Hospital "G. Rodolico", University of Catania, Catania, Italy
| | - Calogero Liotta
- School of Anaesthesia and Intensive Care, University "Magna Graecia", Catanzaro, Italy
| | - Luigi LaVia
- Department of Anaesthesia and Intensive Care, A.O.U. "Policlinico-San Marco", Catania, Italy
| | - Maria Vargas
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Naples Italy
| | - Stefano Romagnoli
- Department of Health Science, Section of Anaesthesia and Intensive Care, University of Florence, Florence, Italy; Department of Anetshesia and Critical Care, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy.
| | - Giovanni Landoni
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy; Faculty of Medicine, Vita-Salute San Raffaele University, Milan, Italy.
| | - Filippo Sanfilippo
- Department of Anaesthesia and Intensive Care, A.O.U. "Policlinico-San Marco", Catania, Italy; Department of General Surgery and Medical-Surgical Specialties, Section of Anesthesia and Intensive Care, University of Catania, Catania, Italy.
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10
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Capellier G, Barrot L, Winizewski H. Oxygenation target in acute respiratory distress syndrome. JOURNAL OF INTENSIVE MEDICINE 2023:S2667-100X(23)00022-1. [PMID: 37362867 PMCID: PMC10181914 DOI: 10.1016/j.jointm.2023.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 03/01/2023] [Accepted: 03/22/2023] [Indexed: 06/28/2023]
Abstract
Determining oxygenation targets in acute respiratory distress syndrome (ARDS) remains a challenge. Although oxygenation targets have been used since ARDS was first described, they have not been investigated in detail. However, recent retrospective and prospective trials have evaluated the optimal oxygenation threshold in patients admitted to the general intensive care unit. In view of the lack of prospective data, clinicians continue to rely on data from the few available trials to identify the optimal oxygenation strategy. Assessment of the cost-benefit ratio of the fraction of inspired oxygen (FiO2) to the partial pressure of oxygen in the arterial blood (PaO2) is an additional challenge. A high FiO2 has been found to be responsible for respiratory failure and deaths in numerous animal models. Low and high PaO2 values have also been demonstrated to be potential risk factors in experimental and clinical situations. The findings from this literature review suggest that PaO2 values ranging between 80 mmHg and 90 mmHg are acceptable in patients with ARDS. The costs of rescue maneuvers needed to reach these targets have been discussed. Several recent papers have highlighted the risk of disagreement between arterial oxygen saturation (SaO2) and peripheral oxygen saturation (SpO2) values. In order to avoid discrepancies and hidden hypoxemia, SpO2 readings need to be compared with those of SaO2. Higher SpO2 values may be needed to achieve the recommended PaO2 and SaO2 values.
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Affiliation(s)
- Gilles Capellier
- Réanimation Médicale, CHU Jean Minjoz, Besançon 25000, France
- Department of Health, Monash University, Melbourne 3800, Australia
- Equipe d'accueil EA 3920, Université de Franche Comte, Besançon 25000, France
| | - Loic Barrot
- Réanimation Médicale, CHU Jean Minjoz, Besançon 25000, France
- Département d'Anesthésie-Réanimation, CHU Jan Minjoz, Besançon 25000, France
| | - Hadrien Winizewski
- Réanimation Médicale, CHU Jean Minjoz, Besançon 25000, France
- Equipe d'accueil EA 3920, Université de Franche Comte, Besançon 25000, France
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11
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Klitgaard TL, Schjørring OL, Severinsen MT, Perner A, Rasmussen BS. Lower versus higher oxygenation targets in ICU patients with haematological malignancy - insights from the HOT-ICU trial. BJA OPEN 2022; 4:100090. [PMID: 37588787 PMCID: PMC10430820 DOI: 10.1016/j.bjao.2022.100090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/14/2022] [Indexed: 08/18/2023]
Abstract
Background Patients admitted to an intensive care unit (ICU) with active haematological malignancy and hypoxaemic respiratory failure have a high mortality. Oxygen supplementation is essential, but limited information exists on the optimum oxygenation targets in these patients. Methods This subgroup analysis was specified before completion of the Handling Oxygenation Targets in the ICU (HOT-ICU) trial. The trial investigated the effects of a lower (8 kPa) vs a higher (12 kPa) arterial oxygenation target and was stratified for active haematological malignancy, chronic obstructive pulmonary disease, and site. We here report the primary outcome (90-day mortality) and selected secondary outcomes in the subgroup of patients with active haematological malignancy. Results The HOT-ICU trial included 168 patients with active haematological malignancy; 82 were randomly allocated to an arterial oxygenation target of 8 kPa, and 86 to 12 kPa. At 90 days, 53/81 patients (65%) in the lower-oxygenation group and 47/86 patients (55%) in the higher-oxygenation group had died: adjusted relative risk 1.22 (95% confidence interval 0.95-1.56); at 1 year, the numbers were 58/81 (72%) vs 56/86 (65%): adjusted relative risk 1.11 (95% confidence interval 0.90-1.36). No statistically significant differences were found for any secondary outcomes. Conclusion In ICU patients with active haematological malignancies and hypoxaemic respiratory failure, we found a high mortality at 90 days and 1 year. Our results did not preclude clinically relevant benefits or harms of a lower oxygenation target in patients with active haematological malignancy. A randomised trial may, therefore, be worthwhile for these patients. Clinical trial registration NCT03174002.
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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
| | - Olav L. Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Marianne T. Severinsen
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Department of Haematology, Clinical Research Centre, Aalborg University Hospital, Aalborg, Denmark
| | - Anders Perner
- Department of Intensive Care, Copenhagen University Hospital – Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, 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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12
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Moussa MD, Beyls C, Lamer A, Roksic S, Juthier F, Leroy G, Petitgand V, Rousse N, Decoene C, Dupré C, Caus T, Huette P, Guilbart M, Guinot PG, Besserve P, Mahjoub Y, Dupont H, Robin E, Meynier J, Vincentelli A, Abou-Arab O. Early hyperoxia and 28-day mortality in patients on venoarterial ECMO support for refractory cardiogenic shock: a bicenter retrospective propensity score-weighted analysis. Crit Care 2022; 26:257. [PMID: 36028883 PMCID: PMC9414410 DOI: 10.1186/s13054-022-04133-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 08/22/2022] [Indexed: 11/10/2022] Open
Abstract
Background The mortality rate for a patient with a refractory cardiogenic shock on venoarterial (VA) extracorporeal membrane oxygenation (ECMO) remains high, and hyperoxia might worsen this prognosis. The objective of the present study was to evaluate the association between hyperoxia and 28-day mortality in this setting.
Methods We conducted a retrospective bicenter study in two French academic centers. The study population comprised adult patients admitted for refractory cardiogenic shock. The following arterial partial pressure of oxygen (PaO2) variables were recorded for 48 h following admission: the absolute peak PaO2 (the single highest value measured during the 48 h), the mean daily peak PaO2 (the mean of each day’s peak values), the overall mean PaO2 (the mean of all values over 48 h), and the severity of hyperoxia (mild: PaO2 < 200 mmHg, moderate: PaO2 = 200–299 mmHg, severe: PaO2 ≥ 300 mmHg). The main outcome was the 28-day all-cause mortality. Inverse probability weighting (IPW) derived from propensity scores was used to reduce imbalances in baseline characteristics. Results From January 2013 to January 2020, 430 patients were included and assessed. The 28-day mortality rate was 43%. The mean daily peak, absolute peak, and overall mean PaO2 values were significantly higher in non-survivors than in survivors. In a multivariate logistic regression analysis, the mean daily peak PaO2, absolute peak PaO2, and overall mean PaO2 were independent predictors of 28-day mortality (adjusted odds ratio [95% confidence interval per 10 mmHg increment: 2.65 [1.79–6.07], 2.36 [1.67–4.82], and 2.85 [1.12–7.37], respectively). After IPW, high level of oxygen remained significantly associated with 28-day mortality (OR = 1.41 [1.01–2.08]; P = 0.041). Conclusions High oxygen levels were associated with 28-day mortality in patients on VA-ECMO support for refractory cardiogenic shock. Our results confirm the need for large randomized controlled trials on this topic. Supplementary Information The online version contains supplementary material available at 10.1186/s13054-022-04133-7.
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Affiliation(s)
| | - Christophe Beyls
- Anesthesia and Critical Care Medicine Department, Amiens University Medical Center, 1 rue du Professeur Christian Cabrol, 80054, Amiens, France
| | - Antoine Lamer
- CHU Lille, ULR 2694-METRICS : Évaluation des Technologies de Santé Et des Pratiques Médicales, 59000, Lille, France
| | - Stefan Roksic
- Anesthesia and Critical Care Medicine Department, Amiens University Medical Center, 1 rue du Professeur Christian Cabrol, 80054, Amiens, France
| | - Francis Juthier
- Cardiac Surgery, Lille Hospital University, 59000, Lille, France
| | - Guillaume Leroy
- Pôle d'Anesthésie-Réanimation, Lille Hospital University, 59000, Lille, France
| | - Vincent Petitgand
- Pôle d'Anesthésie-Réanimation, Lille Hospital University, 59000, Lille, France
| | - Natacha Rousse
- Cardiac Surgery, Lille Hospital University, 59000, Lille, France
| | - Christophe Decoene
- Pôle d'Anesthésie-Réanimation, Lille Hospital University, 59000, Lille, France
| | - Céline Dupré
- Pôle d'Anesthésie-Réanimation, Lille Hospital University, 59000, Lille, France
| | - Thierry Caus
- Cardiac Surgery, Amiens University Medical Center, 80054, Amiens, France
| | - Pierre Huette
- Anesthesia and Critical Care Medicine Department, Amiens University Medical Center, 1 rue du Professeur Christian Cabrol, 80054, Amiens, France
| | - Mathieu Guilbart
- Anesthesia and Critical Care Medicine Department, Amiens University Medical Center, 1 rue du Professeur Christian Cabrol, 80054, Amiens, France
| | - Pierre-Grégoire Guinot
- Department of Anesthesiology and Critical Care Medicine, Dijon University Hospital, 21000, Dijon, France
| | - Patricia Besserve
- Anesthesia and Critical Care Medicine Department, Amiens University Medical Center, 1 rue du Professeur Christian Cabrol, 80054, Amiens, France
| | - Yazine Mahjoub
- Anesthesia and Critical Care Medicine Department, Amiens University Medical Center, 1 rue du Professeur Christian Cabrol, 80054, Amiens, France
| | - Hervé Dupont
- Anesthesia and Critical Care Medicine Department, Amiens University Medical Center, 1 rue du Professeur Christian Cabrol, 80054, Amiens, France
| | - Emmanuel Robin
- Pôle d'Anesthésie-Réanimation, Lille Hospital University, 59000, Lille, France
| | - Jonathan Meynier
- Department of Biostatistics, Amiens Picardy University Hospital, 80054, Amiens, France
| | | | - Osama Abou-Arab
- Anesthesia and Critical Care Medicine Department, Amiens University Medical Center, 1 rue du Professeur Christian Cabrol, 80054, Amiens, France.
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13
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Winiszewski H, Guinot PG, Schmidt M, Besch G, Piton G, Perrotti A, Lorusso R, Kimmoun A, Capellier G. Optimizing PO 2 during peripheral veno-arterial ECMO: a narrative review. Crit Care 2022; 26:226. [PMID: 35883117 PMCID: PMC9316319 DOI: 10.1186/s13054-022-04102-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 07/13/2022] [Indexed: 01/01/2023] Open
Abstract
During refractory cardiogenic shock and cardiac arrest, veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is used to restore a circulatory output. However, it also impacts significantly arterial oxygenation. Recent guidelines of the Extracorporeal Life Support Organization (ELSO) recommend targeting postoxygenator partial pressure of oxygen (PPOSTO2) around 150 mmHg. In this narrative review, we intend to summarize the rationale and evidence for this PPOSTO2 target recommendation. Because this is the most used configuration, we focus on peripheral VA-ECMO. To date, clinicians do not know how to set the sweep gas oxygen fraction (FSO2). Because of the oxygenator's performance, arterial hyperoxemia is common during VA-ECMO support. Interpretation of oxygenation is complex in this setting because of the dual circulation phenomenon, depending on both the native cardiac output and the VA-ECMO blood flow. Such dual circulation results in dual oxygenation, with heterogeneous oxygen partial pressure (PO2) along the aorta, and heterogeneous oxygenation between organs, depending on the mixing zone location. Data regarding oxygenation during VA-ECMO are scarce, but several observational studies have reported an association between hyperoxemia and mortality, especially after refractory cardiac arrest. While hyperoxemia should be avoided, there are also more and more studies in non-ECMO patients suggesting the harm of a too restrictive oxygenation strategy. Finally, setting FSO2 to target strict normoxemia is challenging because continuous monitoring of postoxygenator oxygen saturation is not widely available. The threshold of PPOSTO2 around 150 mmHg is supported by limited evidence but aims at respecting a safe margin, avoiding both hypoxemia and severe hyperoxemia.
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Affiliation(s)
- Hadrien Winiszewski
- Service de Réanimation Médicale, centre hospitalier universitaire de Besançon, Besançon, France. .,Research Unit EA 3920 and SFR FED 4234, University of Franche Comté, Besancon, France.
| | - Pierre-Grégoire Guinot
- Service d'Anesthésie-Réanimation Chirurgicale, centre hospitalier universitaire de Dijon, Dijon, France
| | - Matthieu Schmidt
- Service de Médecine Intensive Réanimation, Institut de Cardiologie, APHP Sorbonne Université Hôpital Pitié-Salpêtrière, Paris, France
| | - Guillaume Besch
- Service d'Anesthésie-Réanimation Chirurgicale, centre hospitalier universitaire de Besançon, Besançon, France.,Research Unit EA 3920 and SFR FED 4234, University of Franche Comté, Besancon, France
| | - Gael Piton
- Service de Réanimation Médicale, centre hospitalier universitaire de Besançon, Besançon, France.,Research Unit EA 3920 and SFR FED 4234, University of Franche Comté, Besancon, France
| | - Andrea Perrotti
- Service de Chirurgie Cardiaque, centre hospitalier universitaire de Besançon, Besançon, France.,Research Unit EA 3920 and SFR FED 4234, University of Franche Comté, Besancon, France
| | - Roberto Lorusso
- Cardio-Thoracic Surgery Department, Maastricht University Medical Centre (MUMC), Cardiovascular Research Institute Maastricht (CARIM), Maastricht, The Netherlands
| | - Antoine Kimmoun
- Service de Médecine Intensive Réanimation, centre hospitalier universitaire de Nancy Brabois, Vandœuvre-lès-Nancy, France
| | - Gilles Capellier
- Service de Réanimation Médicale, centre hospitalier universitaire de Besançon, Besançon, France.,Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Faculty of Medicine, Nursing and Health Sciences, Clayton, Australia.,Research Unit EA 3920 and SFR FED 4234, University of Franche Comté, Besancon, France
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14
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Young PJ, Hodgson CL, Rasmussen BS. Oxygen targets. Intensive Care Med 2022; 48:732-735. [PMID: 35511273 DOI: 10.1007/s00134-022-06714-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/21/2022] [Indexed: 01/04/2023]
Affiliation(s)
- 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.
| | - Carol L Hodgson
- Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia.,Department of Critical Care, University of Melbourne, Melbourne, VIC, Australia.,Intensive Care Unit and Physiotherapy Department, The Alfred Hospital, Melbourne, VIC, Australia.,Critical Care Division, The George Institute for Global Health, Sydney, NSW, Australia
| | - Bodil S Rasmussen
- Department of Anesthesiology and Intensive Care, Aalborg University Hospital, Aalborg, Denmark.,Clinical Institute, Aalborg University, Aalborg, Denmark
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15
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Theunissen S, Balestra C, Bolognési S, Borgers G, Vissenaeken D, Obeid G, Germonpré P, Honoré PM, De Bels D. Effects of Acute Hypobaric Hypoxia Exposure on Cardiovascular Function in Unacclimatized Healthy Subjects: A "Rapid Ascent" Hypobaric Chamber Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19095394. [PMID: 35564787 PMCID: PMC9102089 DOI: 10.3390/ijerph19095394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 11/16/2022]
Abstract
Background: This study aimed to observe the effects of a fast acute ascent to simulated high altitudes on cardiovascular function both in the main arteries and in peripheral circulation. Methods: We examined 17 healthy volunteers, between 18 and 50 years old, at sea level, at 3842 m of hypobaric hypoxia and after return to sea level. Cardiac output (CO) was measured with Doppler transthoracic echocardiography. Oxygen delivery was estimated as the product of CO and peripheral oxygen saturation (SpO2). The brachial artery’s flow-mediated dilation (FMD) was measured with the ultrasound method. Post-occlusion reactive hyperemia (PORH) was assessed by digital plethysmography. Results: During altitude stay, peripheral oxygen saturation decreased (84.9 ± 4.2% of pre-ascent values; p < 0.001). None of the volunteers presented any hypoxia-related symptoms. Nevertheless, an increase in cardiac output (143.2 ± 36.2% of pre-ascent values, p < 0.001) and oxygen delivery index (120.6 ± 28.4% of pre-ascent values; p > 0.05) was observed. FMD decreased (97.3 ± 4.5% of pre-ascent values; p < 0.05) and PORH did not change throughout the whole experiment. Τhe observed changes disappeared after return to sea level, and normoxia re-ensued. Conclusions: Acute exposure to hypobaric hypoxia resulted in decreased oxygen saturation and increased compensatory heart rate, cardiac output and oxygen delivery. Pre-occlusion vascular diameters increase probably due to the reduction in systemic vascular resistance preventing flow-mediated dilation from increasing. Mean Arterial Pressure possibly decrease for the same reason without altering post-occlusive reactive hyperemia throughout the whole experiment, which shows that compensation mechanisms that increase oxygen delivery are effective.
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Affiliation(s)
- Sigrid Theunissen
- Environmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), 1160 Brussels, Belgium;
- Correspondence: (S.T.); (C.B.)
| | - Costantino Balestra
- Environmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), 1160 Brussels, Belgium;
- Physical Activity Teaching Unit, Motor Sciences Department, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
- DAN Europe Research Division (Roseto-Brussels), 1160 Brussels, Belgium
- Correspondence: (S.T.); (C.B.)
| | - Sébastien Bolognési
- Environmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), 1160 Brussels, Belgium;
| | - Guy Borgers
- Hypobaric Centre, Queen Astrid Military Hospital, 1120 Brussels, Belgium; (G.B.); (D.V.)
| | - Dirk Vissenaeken
- Hypobaric Centre, Queen Astrid Military Hospital, 1120 Brussels, Belgium; (G.B.); (D.V.)
| | - Georges Obeid
- Military Hospital Queen Elizabeth, 1120 Brussels, Belgium; (G.O.); (P.G.)
| | - Peter Germonpré
- Military Hospital Queen Elizabeth, 1120 Brussels, Belgium; (G.O.); (P.G.)
| | - Patrick M. Honoré
- Department of Intensive Care Medicine, CHU-Brugmann, 1020 Brussels, Belgium; (P.M.H.); (D.D.B.)
| | - David De Bels
- Department of Intensive Care Medicine, CHU-Brugmann, 1020 Brussels, Belgium; (P.M.H.); (D.D.B.)
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Mølgaard Nielsen F, Lass Klitgaard T, Granholm A, Lange T, Perner A, Lilleholt Schjørring O, Steen Rasmussen B. Higher versus lower oxygenation targets in COVID-19 patients with severe hypoxaemia (HOT-COVID) trial: Protocol for a secondary Bayesian analysis. Acta Anaesthesiol Scand 2022; 66:408-414. [PMID: 34951717 DOI: 10.1111/aas.14023] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 12/27/2021] [Accepted: 12/17/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Respiratory failure is the main cause of mortality and morbidity among ICU patients with coronavirus disease 2019 (COVID-19). In these patients, supplemental oxygen therapy is essential, but there is limited evidence the optimal target. To address this, the ongoing handling oxygenation targets in COVID-19 (HOT-COVID) trial was initiated to investigate the effect of a lower oxygenation target (partial pressure of arterial oxygen (PaO2 ) of 8 kPa) versus a higher oxygenation target (PaO2 of 12 kPa) in the ICU on clinical outcome in patients with COVID-19 and hypoxaemia. METHODS The HOT-COVID is planned to enrol 780 patients. This paper presents the protocol and statistical analysis plan for the conduct of a secondary Bayesian analysis of the primary outcome of HOT-COVID being days alive without life-support at 90 days and the secondary outcome 90-day all-cause mortality. Furthermore, both outcomes will be investigated for the presence heterogeneity of treatment effects based on four baseline parameters being sequential organ failure assessment score, PaO2 /fraction of inspired oxygen ratio, highest dose of norepinephrine during the 24 h before randomisation, and plasma concentration of lactate at randomisation. CONCLUSION The results of this pre-planned secondary Bayesian analysis will complement the primary frequentist analysis of the HOT-COVID trial and may facilitate a more nuanced interpretation of the trial results.
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Affiliation(s)
- Frederik Mølgaard Nielsen
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
| | - Thomas Lass Klitgaard
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
| | - Anders Granholm
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
- Department of Intensive Care Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
| | - Theis Lange
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
- Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
| | - Anders Perner
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
- Department of Intensive Care Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
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Long-term mortality and health-related quality of life of lower versus higher oxygenation targets in ICU patients with severe hypoxaemia. Intensive Care Med 2022; 48:714-722. [PMID: 35441849 PMCID: PMC9019282 DOI: 10.1007/s00134-022-06695-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 04/01/2022] [Indexed: 01/04/2023]
Abstract
PURPOSE We assessed outcomes after 1 year of lower versus higher oxygenation targets in intensive care unit (ICU) patients with severe hypoxaemia. METHODS Pre-planned analyses evaluating 1-year mortality and health-related quality-of-life (HRQoL) outcomes in the previously published Handling Oxygenation Targets in the ICU trial which randomised 2928 adults with acute hypoxaemia to targets of arterial oxygen of 8 kPa or 12 kPa throughout the ICU stay up to 90 days. One-year all-cause mortality was assessed in the intention-to-treat population. HRQoL was assessed using EuroQol 5 dimensions 5 levels (EQ-5D-5L) questionnaire and EQ visual analogue scale score (EQ-VAS), and analyses were conducted in both survivors only and the intention-to-treat population with assignment of the worst scores to deceased patients. RESULTS We obtained 1-year vital status for 2887/2928 (98.6%), and HRQoL for 2600/2928 (88.8%) of the trial population. One year after randomisation, 707/1442 patients (49%) in the lower oxygenation group vs. 704/1445 (48.7%) in the higher oxygenation group had died (adjusted risk ratio 1.00; 95% confidence interval 0.93-1.08, p = 0.92). In total, 1189/1476 (80.4%) 1-year survivors participated in HRQoL interviews: median EQ-VAS scores were 65 (interquartile range 50-80) in the lower oxygenation group versus 67 (50-80) in the higher oxygenation group (p = 0.98). None of the five EQ-5D-5L dimensions differed between groups. CONCLUSION Among adult ICU patients with severe hypoxaemia, a lower oxygenation target (8 kPa) did not improve survival or HRQoL at 1 year as compared to a higher oxygenation target (12 kPa).
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Randomised clinical trials in critical care: past, present and future. Intensive Care Med 2021; 48:164-178. [PMID: 34853905 PMCID: PMC8636283 DOI: 10.1007/s00134-021-06587-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/17/2021] [Indexed: 12/15/2022]
Abstract
Randomised clinical trials (RCTs) are the gold standard for providing unbiased evidence of intervention effects. Here, we provide an overview of the history of RCTs and discuss the major challenges and limitations of current critical care RCTs, including overly optimistic effect sizes; unnuanced conclusions based on dichotomization of results; limited focus on patient-centred outcomes other than mortality; lack of flexibility and ability to adapt, increasing the risk of inconclusive results and limiting knowledge gains before trial completion; and inefficiency due to lack of re-use of trial infrastructure. We discuss recent developments in critical care RCTs and novel methods that may provide solutions to some of these challenges, including a research programme approach (consecutive, complementary studies of multiple types rather than individual, independent studies), and novel design and analysis methods. These include standardization of trial protocols; alternative outcome choices and use of core outcome sets; increased acceptance of uncertainty, probabilistic interpretations and use of Bayesian statistics; novel approaches to assessing heterogeneity of treatment effects; adaptation and platform trials; and increased integration between clinical trials and clinical practice. We outline the advantages and discuss the potential methodological and practical disadvantages with these approaches. With this review, we aim to inform clinicians and researchers about conventional and novel RCTs, including the rationale for choosing one or the other methodological approach based on a thorough discussion of pros and cons. Importantly, the most central feature remains the randomisation, which provides unparalleled restriction of confounding compared to non-randomised designs by reducing confounding to chance.
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