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Bertacchi M, Wendel-Garcia PD, Hana A, Ince C, Maggiorini M, Hilty MP. Nitroglycerin challenge identifies microcirculatory target for improved resuscitation in patients with circulatory shock. Intensive Care Med Exp 2024; 12:76. [PMID: 39222259 PMCID: PMC11369126 DOI: 10.1186/s40635-024-00662-3] [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: 10/05/2023] [Accepted: 08/21/2024] [Indexed: 09/04/2024] Open
Abstract
BACKGROUND Circulatory shock and multi-organ failure remain major contributors to morbidity and mortality in critically ill patients and are associated with insufficient oxygen availability in the tissue. Intrinsic mechanisms to improve tissue perfusion, such as up-regulation of functional capillary density (FCD) and red blood cell velocity (RBCv), have been identified as maneuvers to improve oxygen extraction by the tissues; however, their role in circulatory shock and potential use as resuscitation targets remains unknown. To fill this gap, we examined the baseline and maximum recruitable FCD and RBCv in response to a topical nitroglycerin stimulus (FCDNG, RBCvNG) in patients with and without circulatory shock to test whether this may be a method to identify the presence and magnitude of a microcirculatory reserve capacity important for identifying a resuscitation target. METHODS Sublingual handheld vital microscopy was performed after initial resuscitation in mechanically ventilated patients consecutively admitted to a tertiary medical ICU. FCD and RBCv were quantified using an automated computer vision algorithm (MicroTools). Patients with circulatory shock were retrospectively identified via standardized hemodynamic and clinical criteria and compared to patients without circulatory shock. RESULTS 54 patients (57 ± 14y, BMI 26.3 ± 4.9 kg/m2, SAPS 56 ± 19, 65% male) were included, 13 of whom presented with circulatory shock. Both groups had similar cardiac index, mean arterial pressure, RBCv, and RBCvNG. Heart rate (p < 0.001), central venous pressure (p = 0.02), lactate (p < 0.001), capillary refill time (p < 0.01), and Mottling score (p < 0.001) were higher in circulatory shock after initial resuscitation, while FCD and FCDNG were 10% lower (16.9 ± 4.2 and 18.9 ± 3.2, p < 0.01; 19.3 ± 3.1 and 21.3 ± 2.9, p = 0.03). Nitroglycerin response was similar in both groups, and circulatory shock patients reached FCDNG similar to baseline FCD found in patients without shock. CONCLUSION Critically ill patients suffering from circulatory shock were found to present with a lower sublingual FCD. The preserved nitroglycerin response suggests a dysfunction of intrinsic regulation mechanisms to increase the microcirculatory oxygen extraction capacity associated with circulatory shock and identifies a potential resuscitation target. These differences in microcirculatory hemodynamic function between patients with and without circulatory shock were not reflected in blood pressure or cardiac index.
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Affiliation(s)
- Massimiliano Bertacchi
- Institute of Intensive Care Medicine, University Hospital of Zurich, Zurich, Switzerland
| | - Pedro D Wendel-Garcia
- Institute of Intensive Care Medicine, University Hospital of Zurich, Zurich, Switzerland
| | - Anisa Hana
- Institute of Intensive Care Medicine, University Hospital of Zurich, Zurich, Switzerland
| | - Can Ince
- Laboratory of Translational Intensive Care, Department of Intensive Care, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Marco Maggiorini
- Institute of Intensive Care Medicine, University Hospital of Zurich, Zurich, Switzerland
| | - Matthias P Hilty
- Institute of Intensive Care Medicine, University Hospital of Zurich, Zurich, Switzerland.
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Dalli J, Reilly F, Epperlein J, Potter S, Cahill R. Advancing indocyanine green fluorescence flap perfusion assessment via near infrared signal quantification. JPRAS Open 2024; 41:203-214. [PMID: 39050743 PMCID: PMC11266865 DOI: 10.1016/j.jpra.2024.05.005] [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: 03/07/2024] [Accepted: 05/25/2024] [Indexed: 07/27/2024] Open
Abstract
Introduction Intraoperative indocyanine green fluorescence angiography (ICGFA) perfusion assessment has been demonstrated to reduce complications in reconstructive surgery. This study sought to advance ICGFA flap perfusion assessment via quantification methodologies. Method Patients undergoing pedicled and free flap reconstruction were subjected to intraoperative ICGFA flap perfusion assessment using either an open or endoscopic system. Patient demographics, clinical impact of ICGFA and outcomes were documented. From the ICGFA recordings, fluorescence signal quality, as well as inflow/outflow milestones for the flap and surrounding (control) tissue were computationally quantified post hoc and compared on a region of interest (ROI) level. Further software development intended full flap quantification, metric computation and heatmap generation. Results Fifteen patients underwent ICGFA assessment at reconstruction (8 head and neck, 6 breast and 1 perineum) including 10 free and 5 pedicled flaps. Visual ICGFA interpretation altered on-table management in 33.3% of cases, with flap edges trimmed in 4 and a re-anastomosis in 1 patient. One patient suffered post-operative flap dehiscence. Laparoscopic camera use proved feasible but recorded a lower quality signal than the open system.Using established and novel metrics, objective ICGFA signal ROI quantification permitted perfusion comparisons between the flap and surrounding tissue. Full flap assessment feasibility was demonstrated by computing all pixels and subsequent outputs summarisation as heatmaps. Conclusion This trial demonstrated the feasibility and potential for ICGFA with operator based and quantitative flap perfusion assessment across several reconstructive applications. Further development and implementation of these computational methods requires technique and device standardisation.
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Affiliation(s)
- J. Dalli
- UCD Centre for Precision Surgery, School of Medicine, UCD, Dublin, Ireland
| | - F. Reilly
- Department of Plastic & Reconstructive Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | | | - S. Potter
- Department of Plastic & Reconstructive Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
- UCD School of Medicine, UCD, Dublin, Ireland
| | - R. Cahill
- UCD Centre for Precision Surgery, School of Medicine, UCD, Dublin, Ireland
- Department of Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
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Yuriditsky E, Bakker J. What every intensivist should know about…Systolic arterial pressure targets in shock. J Crit Care 2024; 82:154790. [PMID: 38816174 DOI: 10.1016/j.jcrc.2024.154790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/10/2023] [Accepted: 12/17/2023] [Indexed: 06/01/2024]
Affiliation(s)
- Eugene Yuriditsky
- Division of Cardiology, Department of Medicine, NYU Grossman School of Medicine, New York, NY, USA.
| | - Jan Bakker
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, NYU Grossman School of Medicine, New York, USA; Department of Pulmonology and Critical Care, Columbia University Medical Center, New York, USA; Department of Intensive Care, Erasmus MC University Medical Center, Rotterdam, the Netherlands; Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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Wang L, Zhong X, Yang H, Yang J, Zhang Y, Zou X, Wang L, Zhang Z, Jin X, Kang Y, Wu Q. When can we start early enteral nutrition safely in patients with shock on vasopressors? Clin Nutr ESPEN 2024; 61:28-36. [PMID: 38777444 DOI: 10.1016/j.clnesp.2024.03.007] [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: 09/23/2023] [Revised: 02/17/2024] [Accepted: 03/03/2024] [Indexed: 05/25/2024]
Abstract
Shock is a common critical illness characterized by microcirculatory disorders and insufficient tissue perfusion. Patients with shock and hemodynamic instability generally require vasopressors to maintain the target mean arterial pressure. Enteral nutrition (EN) is an important therapeutic intervention in critically ill patients and has unique benefits for intestinal recovery. However, the initiation of early EN in patients with shock receiving vasopressors remains controversial. Current guidelines make conservative and vague recommendations regarding early EN support in patients with shock. Increasing studies demonstrates that early EN delivery is safe and feasible in patients with shock receiving vasopressors; however, this evidence is based on observational studies. Changes in gastrointestinal blood flow vary by vasopressor and inotrope and are complex. The risk of gastrointestinal complications, especially the life-threatening complications of non-occlusive mesenteric ischemia and non-occlusive bowel necrosis, cannot be ignored in patients with shock during early EN support. It remains a therapeutic challenge in critical care nutrition therapy to determine the initiation time of EN in patients with shock receiving vasopressors and the safe threshold region for initiating EN with vasopressors. Therefore, the current review aimed to summarize the evidence on the optimal and safe timing of early EN initiation in patients with shock receiving vasopressors to improve clinical practice.
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Affiliation(s)
- Luping Wang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
| | - Xi Zhong
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
| | - Hao Yang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
| | - Jing Yang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
| | - Yan Zhang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
| | - Xia Zou
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
| | - Lijie Wang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
| | - Zhongwei Zhang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
| | - Xiaodong Jin
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
| | - Yan Kang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
| | - Qin Wu
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China.
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Behem CR, Friedheim T, Holthusen H, Rapp A, Suntrop T, Graessler MF, Pinnschmidt HO, Wipper SH, von Lucadou M, Schwedhelm E, Renné T, Pfister K, Schierling W, Trepte CJC. Goal-directed colloid versus crystalloid therapy and microcirculatory blood flow following ischemia/reperfusion. Microvasc Res 2024; 152:104630. [PMID: 38048876 DOI: 10.1016/j.mvr.2023.104630] [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: 09/08/2023] [Revised: 11/11/2023] [Accepted: 11/25/2023] [Indexed: 12/06/2023]
Abstract
OBJECTIVE Ischemia/reperfusion can impair microcirculatory blood flow. It remains unknown whether colloids are superior to crystalloids for restoration of microcirculatory blood flow during ischemia/reperfusion injury. We tested the hypothesis that goal-directed colloid - compared to crystalloid - therapy improves small intestinal, renal, and hepatic microcirculatory blood flow in pigs with ischemia/reperfusion injury. METHODS This was a randomized trial in 32 pigs. We induced ischemia/reperfusion by supra-celiac aortic-cross-clamping. Pigs were randomized to receive either goal-directed isooncotic hydroxyethyl-starch colloid or balanced isotonic crystalloid therapy. Microcirculatory blood flow was measured using Laser-Speckle-Contrast-Imaging. The primary outcome was small intestinal, renal, and hepatic microcirculatory blood flow 4.5 h after ischemia/reperfusion. Secondary outcomes included small intestinal, renal, and hepatic histopathological damage, macrohemodynamic and metabolic variables, as well as specific biomarkers of tissue injury, renal, and hepatic function and injury, and endothelial barrier function. RESULTS Small intestinal microcirculatory blood flow was higher in pigs assigned to isooncotic hydroxyethyl-starch colloid therapy than in pigs assigned to balanced isotonic crystalloid therapy (768.7 (677.2-860.1) vs. 595.6 (496.3-694.8) arbitrary units, p = .007). There were no important differences in renal (509.7 (427.2-592.1) vs. 442.1 (361.2-523.0) arbitrary units, p = .286) and hepatic (604.7 (507.7-701.8) vs. 548.7 (444.0-653.3) arbitrary units, p = .376) microcirculatory blood flow between groups. Pigs assigned to colloid - compared to crystalloid - therapy also had less small intestinal, but not renal and hepatic, histopathological damage. CONCLUSIONS Goal-directed isooncotic hydroxyethyl-starch colloid - compared to balanced isotonic crystalloid - therapy improved small intestinal, but not renal and hepatic, microcirculatory blood flow in pigs with ischemia/reperfusion injury. Whether colloid therapy improves small intestinal microcirculatory blood flow in patients with ischemia/reperfusion needs to be investigated in clinical trials.
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Affiliation(s)
- Christoph R Behem
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - Till Friedheim
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Hannes Holthusen
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Adina Rapp
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Timo Suntrop
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michael F Graessler
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Hans O Pinnschmidt
- Department of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sabine H Wipper
- Department of Vascular Medicine, University Heart and Vascular Center Hamburg (UHZ), Hamburg, Germany
| | - Mirjam von Lucadou
- Institute of Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Edzard Schwedhelm
- Institute of Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Thomas Renné
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Irish Centre for Vascular Biology, School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland; Center for Thrombosis and Hemostasis (CTH), Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Karin Pfister
- Department of Vascular Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Wilma Schierling
- Department of Vascular Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Constantin J C Trepte
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Dalli J, Joosten JJ, Jindal A, Hardy NP, Camilleri-Brennan J, Andrejevic P, Hompes R, Cahill RA. Impact of standardising indocyanine green fluorescence angiography technique for visual and quantitative interpretation on interuser variability in colorectal surgery. Surg Endosc 2024; 38:1306-1315. [PMID: 38110792 DOI: 10.1007/s00464-023-10564-2] [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: 07/08/2023] [Accepted: 10/24/2023] [Indexed: 12/20/2023]
Abstract
AIM/BACKGROUND Intra-operative colonic perfusion assessment via indocyanine green fluorescence angiography (ICGFA) aims to address malperfusion-related anastomotic complications; however, its interpretation suffers interuser variability (IUV), especially early in ICGFA experience. This work assesses the impact of a protocol developed for both operator-based judgement and computational development on interpretation consistency, focusing on senior surgeons yet to start using ICGFA. METHODS Experienced and junior gastrointestinal surgeons were invited to complete an ICGFA-experience questionnaire. They subsequently interpreted nine operative ICGFA videos regarding perfusion sufficiency of a surgically prepared distal colon during laparoscopic anterior resection by indicating their preferred site of proximal transection using an online annotation platform (mindstamp.com). Six ICGFA videos had been prepared with a clinical standardisation protocol controlling camera and patient positioning of which three each had monochrome near infrared (NIR) and overlay display. Three others were non-standardised controls with synchronous NIR and overlay picture-in-picture display. Differences in transection level between different cohorts were assessed for intraclass correlation coefficient (ICC) via ImageJ and IBM SPSS. RESULTS 58 clinicians (12 ICGFA experts, 46 ICGFA inexperienced of whom 23 were either finished or within one year of finishing training and 23 were junior trainees) participated as per power calculations. 63% felt that ICGFA should be routinely deployed with 57% believing interpretative competence requires 11-50 cases. Transection level concordance was generally good (ICC = 0.869) across all videos and levels of expertise (0.833-0.915). However, poor agreement was evident with the standardised protocol videos for overlay presentation (0.208-0.345). Similarly, poor agreement was seen for the monochrome display (0.392-0.517), except for those who were trained but ICG inexperienced (0.877) although even here agreement was less than with unstandardised videos (0.943). CONCLUSION Colorectal ICGFA acquisition and display standardisation impacts IUV with this specific protocol tending to diminish surgeon interpretation consistency. ICGFA video recording for computational development may require dedicated protocols.
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Affiliation(s)
- Jeffrey Dalli
- UCD Centre for Precision Surgery, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland
| | - Johanna J Joosten
- Department of Surgery, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam, The Netherlands
- Cancer Centre Amsterdam, Amsterdam, The Netherlands
| | - Abhinav Jindal
- UCD Centre for Precision Surgery, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland
| | - Niall P Hardy
- UCD Centre for Precision Surgery, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland
| | - John Camilleri-Brennan
- Forth Valley Royal Hospital, Larbert, Stirlingshire, Scotland, UK
- University of Glasgow, Glasgow, Scotland, UK
| | - Predrag Andrejevic
- Department of Surgery, Mater Dei Hospital, Msida, Malta
- University of Malta, Msida, Malta
| | - Roel Hompes
- Department of Surgery, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam, The Netherlands
- Cancer Centre Amsterdam, Amsterdam, The Netherlands
| | - Ronan A Cahill
- UCD Centre for Precision Surgery, Catherine McAuley Centre, University College Dublin, 21 Nelson St, Phibsborough, Dublin 7, D07 KX5K, Ireland.
- Department of Surgery, Mater Misericordiae University Hospital, Dublin, Ireland.
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Dari MA, Fayaz A, Sharif S, Hernandez Galaviz S, Hernandez Galaviz E, Bataineh SM, Wei CR, Allahwala D. Comparison of High-Normal Versus Low-Normal Mean Arterial Pressure at Target on Outcomes in Sepsis or Shock Patients: A Meta-Analysis of Randomized Control Trials. Cureus 2024; 16:e52258. [PMID: 38352092 PMCID: PMC10863627 DOI: 10.7759/cureus.52258] [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] [Accepted: 01/14/2024] [Indexed: 02/16/2024] Open
Abstract
The objective of this meta-analysis was to compare the impact of a high-normal and a low-normal mean arterial pressure (MAP) target on outcomes in patients with sepsis or shock. Adhering to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 guidelines, two investigators conducted a thorough literature search across online databases, including PubMed, Cochrane Library, Web of Science, and EMBASE, spanning from inception to December 10, 2023. The assessed outcomes encompassed all-cause mortality, the need for renal replacement therapy, and the length of intensive care unit (ICU) stay. A total of four randomized controlled trials (RCTs) were included, involving 3507 participants with individual study participant counts ranging from 118 to 2463. The pooled analysis revealed no statistically significant difference in the risk of all-cause mortality between the two groups (Risk Ratio (RR): 0.94, 95% Confidence Interval (CI): 0.87 to 1.01). Furthermore, there was no disparity in the rates of renal replacement therapy and the duration of ICU stay between the high-normal and low-normal MAP groups. Our findings indicate no significant distinctions in mortality, rates of renal replacement therapy, or ICU stay duration between the two groups. However, future trials with larger sample sizes are warranted to comprehensively understand the nuanced effects of different MAP settings on outcomes in patients with sepsis and shock.
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Affiliation(s)
- Mohammedsefa A Dari
- Otolaryngology - Head and Neck Surgery, Addis Ababa University, Addis Ababa, ETH
| | - Azrung Fayaz
- Internal Medicine, College of Physicians and Surgeons, Peshawar, PAK
- Internal Medicine, Hayatabad Medical Complex Peshawar, Peshawar, PAK
| | - Shazia Sharif
- Gastroenterology, Lahore General Hospital, Lahore, PAK
| | | | | | | | - Calvin R Wei
- Research and Development, Shing Huei Group, Taipei, TWN
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Merdji H, Levy B, Jung C, Ince C, Siegemund M, Meziani F. Microcirculatory dysfunction in cardiogenic shock. Ann Intensive Care 2023; 13:38. [PMID: 37148451 PMCID: PMC10164225 DOI: 10.1186/s13613-023-01130-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 04/13/2023] [Indexed: 05/08/2023] Open
Abstract
Cardiogenic shock is usually defined as primary cardiac dysfunction with low cardiac output leading to critical organ hypoperfusion, and tissue hypoxia, resulting in high mortality rate between 40% and 50% despite recent advances. Many studies have now evidenced that cardiogenic shock not only involves systemic macrocirculation, such as blood pressure, left ventricular ejection fraction, or cardiac output, but also involves significant systemic microcirculatory abnormalities which seem strongly associated with the outcome. Although microcirculation has been widely studied in the context of septic shock showing heterogeneous alterations with clear evidence of macro and microcirculation uncoupling, there is now a growing body of literature focusing on cardiogenic shock states. Even if there is currently no consensus regarding the treatment of microcirculatory disturbances in cardiogenic shock, some treatments seem to show a benefit. Furthermore, a better understanding of the underlying pathophysiology may provide hypotheses for future studies aiming to improve cardiogenic shock prognosis.
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Affiliation(s)
- Hamid Merdji
- Intensive Care Unit, Department of Acute Medicine, University Hospital, Basel, Switzerland
- Department of Clinical Research, University of Basel, Basel, Switzerland
| | - Bruno Levy
- Institut Lorrain du Cœur et des Vaisseaux, Medical Intensive Care Unit Brabois, Université de Lorraine, CHRU de Nancy, INSERM U1116, Nancy, France
| | - Christian Jung
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty, University Hospital Düsseldorf, Heinrich-Heine-University, 40225, Düsseldorf, Germany
| | - Can Ince
- Department of Intensive Care, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Martin Siegemund
- Intensive Care Unit, Department of Acute Medicine, University Hospital, Basel, Switzerland
- Department of Clinical Research, University of Basel, Basel, Switzerland
| | - Ferhat Meziani
- Faculté de Médecine, Université de Strasbourg (UNISTRA), Strasbourg, France.
- Service de Médecine Intensive-Réanimation, Hôpitaux Universitaires de Strasbourg, Nouvel Hôpital Civil, 1, Place de L'Hôpital, 67091, Strasbourg Cedex, France.
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, Strasbourg, France.
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Reynolds JD, Posina K, Zhu L, Jenkins T, Matto F, Hausladen A, Kashyap V, Schilz R, Zhang R, Mannick J, Klickstein L, Premont RT, Stamler JS. Control of tissue oxygenation by S-nitrosohemoglobin in human subjects. Proc Natl Acad Sci U S A 2023; 120:e2220769120. [PMID: 36812211 PMCID: PMC9992850 DOI: 10.1073/pnas.2220769120] [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: 01/23/2023] [Indexed: 02/24/2023] Open
Abstract
S-Nitrosohemoglobin (SNO-Hb) is unique among vasodilators in coupling blood flow to tissue oxygen requirements, thus fulfilling an essential function of the microcirculation. However, this essential physiology has not been tested clinically. Reactive hyperemia following limb ischemia/occlusion is a standard clinical test of microcirculatory function, which has been ascribed to endothelial nitric oxide (NO). However, endothelial NO does not control blood flow governing tissue oxygenation, presenting a major quandary. Here we show in mice and humans that reactive hyperemic responses (i.e., reoxygenation rates following brief ischemia/occlusion) are in fact dependent on SNO-Hb. First, mice deficient in SNO-Hb (i.e., carrying C93A mutant Hb refractory to S-nitrosylation) showed blunted muscle reoxygenation rates and persistent limb ischemia during reactive hyperemia testing. Second, in a diverse group of humans-including healthy subjects and patients with various microcirculatory disorders-strong correlations were found between limb reoxygenation rates following occlusion and both arterial SNO-Hb levels (n = 25; P = 0.042) and SNO-Hb/total HbNO ratios (n = 25; P = 0.009). Secondary analyses showed that patients with peripheral artery disease had significantly reduced SNO-Hb levels and blunted limb reoxygenation rates compared with healthy controls (n = 8 to 11/group; P < 0.05). Low SNO-Hb levels were also observed in sickle cell disease, where occlusive hyperemic testing was deemed contraindicated. Altogether, our findings provide both genetic and clinical support for the role of red blood cells in a standard test of microvascular function. Our results also suggest that SNO-Hb is a biomarker and mediator of blood flow governing tissue oxygenation. Thus, increases in SNO-Hb may improve tissue oxygenation in patients with microcirculatory disorders.
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Affiliation(s)
- James D. Reynolds
- Department of Anesthesiology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106
- The Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
- The Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH44106
| | - Kanna Posina
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
| | - Lin Zhu
- Department of Anesthesiology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106
- The Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
| | - Trevor Jenkins
- The Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
| | - Faisal Matto
- The Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
| | - Alfred Hausladen
- The Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
| | - Vikram Kashyap
- Department of Surgery, School of Medicine, Case Western Reserve University, Cleveland, OH44106
| | - Robert Schilz
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
| | - Rongli Zhang
- The Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
| | - Joan Mannick
- Novartis Institutes for Biomedical Research, Cambridge, MA02139
| | | | - Richard T. Premont
- The Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
- The Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH44106
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
| | - Jonathan S. Stamler
- The Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
- The Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH44106
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH44106
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10
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Association of systolic, diastolic, mean, and pulse pressure with morbidity and mortality in septic ICU patients: a nationwide observational study. Ann Intensive Care 2023; 13:9. [PMID: 36807233 PMCID: PMC9941378 DOI: 10.1186/s13613-023-01101-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 01/21/2023] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND Intensivists target different blood pressure component values to manage intensive care unit (ICU) patients with sepsis. We aimed to evaluate the relationship between individual blood pressure components and organ dysfunction in critically ill septic patients. METHODS In this retrospective observational study, we evaluated 77,328 septic patients in 364 ICUs in the eICU Research Institute database. Primary exposure was the lowest cumulative value of each component; mean, systolic, diastolic, and pulse pressure, sustained for at least 120 min during ICU stay. Primary outcome was ICU mortality and secondary outcomes were composite outcomes of acute kidney injury or death and myocardial injury or death during ICU stay. Multivariable logistic regression spline and threshold regression adjusting for potential confounders were conducted to evaluate associations between exposures and outcomes. Sensitivity analysis was conducted in 4211 patients with septic shock. RESULTS Lower values of all blood pressures components were associated with a higher risk of ICU mortality. Estimated change-points for the risk of ICU mortality were 69 mmHg for mean, 100 mmHg for systolic, 60 mmHg for diastolic, and 57 mmHg for pulse pressure. The strength of association between blood pressure components and ICU mortality as determined by slopes of threshold regression were mean (- 0.13), systolic (- 0.11), diastolic (- 0.09), and pulse pressure (- 0.05). Equivalent non-linear associations between blood pressure components and ICU mortality were confirmed in septic shock patients. We observed a similar relationship between blood pressure components and secondary outcomes. CONCLUSION Blood pressure component association with ICU mortality is the strongest for mean followed by systolic, diastolic, and weakest for pulse pressure. Critical care teams should continue to follow MAP-based resuscitation, though exploratory analysis focusing on blood pressure components in different sepsis phenotypes in critically ill ICU patients is needed.
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Behem CR, Haunschild J, Pinnschmidt HO, Gaeth C, Graessler MF, Trepte CJC, Etz CD, Debus ES, Wipper SH. Effects of fluids vs. vasopressors on spinal cord microperfusion in hemorrhagic shock induced ischemia/reperfusion. Microvasc Res 2022; 143:104383. [PMID: 35605693 DOI: 10.1016/j.mvr.2022.104383] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 05/13/2022] [Accepted: 05/17/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Spinal cord injury induced by ischemia/reperfusion is a devastating complication of aortic repair. Despite developments for prevention and treatment of spinal cord injury, incidence is still considerably high majorly impacting patient outcome. Microcirculation is paramount for tissue perfusion and oxygen supply and often dissociated from macrohemodynamic parameters used to guide resuscitation. Effects of fluids vs. vasopressors in the setting of hemodynamic resuscitation on spinal cord microperfusion are unknown. Aim of this study was to compare the effects of vasopressor and fluid resuscitation on spinal cord microperfusion in a translational acute pig model of hemorrhagic shock induced ischemia/reperfusion injury. METHODS We designed this study as prospective randomized explorative large animal study. We induced hemorrhagic shock in 20 pigs as a model of global ischemia/reperfusion injury. We randomized animals to receive either fluid or vasopressor resuscitation. We measured spinal cord microperfusion using fluorescent microspheres as well as laser-Doppler probes. We monitored and analyzed macrohemodynamic parameters and cerebrospinal fluid pressure. RESULTS Spinal cord microperfusion decreased following hemorrhagic shock induced ischemia/reperfusion injury. Both fluids and vasopressors sufficiently restored spinal cord microperfusion. There were no important changes between groups (percentage changes compared to baseline: fluids 14.0 (0.31-27.6) vs. vasopressors 24.3 (8.12-40.4), p = .340). However, cerebrospinal fluid pressure was higher in animals receiving fluid resuscitation (percentage changes compared to baseline: fluids 27.7 (12.6-42.8) vs. vasopressors -5.56 ((-19.8)-8.72), p = .003). Microcirculatory resuscitation was in line with improvements of macrohemodynamic parameters. CONCLUSIONS Both, fluids and vasopressors, equally restored spinal cord microperfusion in a porcine acute model of hemorrhagic shock induced ischemia/reperfusion injury. However, significant differences in cerebrospinal fluid pressure following resuscitation were present. Future studies should evaluate these effects in perfusion disruption induced ischemia/reperfusion conditions of microcirculatory deterioration.
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Affiliation(s)
- Christoph R Behem
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - Josephina Haunschild
- University Department for Cardiac Surgery, Heart Center Leipzig, Leipzig, Germany
| | - Hans O Pinnschmidt
- Department of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Catharina Gaeth
- Department of Vascular Medicine, University Heart and Vascular Center Hamburg (UHZ), Hamburg, Germany
| | - Michael F Graessler
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Constantin J C Trepte
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Christian D Etz
- University Department for Cardiac Surgery, Heart Center Leipzig, Leipzig, Germany
| | - E Sebastian Debus
- Department of Vascular Medicine, University Heart and Vascular Center Hamburg (UHZ), Hamburg, Germany
| | - Sabine H Wipper
- Department of Vascular Medicine, University Heart and Vascular Center Hamburg (UHZ), Hamburg, Germany
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12
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Raia L, Zafrani L. Endothelial Activation and Microcirculatory Disorders in Sepsis. Front Med (Lausanne) 2022; 9:907992. [PMID: 35721048 PMCID: PMC9204048 DOI: 10.3389/fmed.2022.907992] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/16/2022] [Indexed: 11/19/2022] Open
Abstract
The vascular endothelium is crucial for the maintenance of vascular homeostasis. Moreover, in sepsis, endothelial cells can acquire new properties and actively participate in the host's response. If endothelial activation is mostly necessary and efficient in eliminating a pathogen, an exaggerated and maladaptive reaction leads to severe microcirculatory damage. The microcirculatory disorders in sepsis are well known to be associated with poor outcome. Better recognition of microcirculatory alteration is therefore essential to identify patients with the worse outcomes and to guide therapeutic interventions. In this review, we will discuss the main features of endothelial activation and dysfunction in sepsis, its assessment at the bedside, and the main advances in microcirculatory resuscitation.
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Affiliation(s)
- Lisa Raia
- Medical Intensive Care Unit, Hôpital Saint-Louis, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Lara Zafrani
- Medical Intensive Care Unit, Hôpital Saint-Louis, Assistance Publique des Hôpitaux de Paris, Paris, France
- INSERM UMR 976, University of Paris Cité, Paris, France
- *Correspondence: Lara Zafrani
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13
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Hof S, Marcus C, Kuebart A, Schulz J, Truse R, Raupach A, Bauer I, Flögel U, Picker O, Herminghaus A, Temme S. A Toolbox to Investigate the Impact of Impaired Oxygen Delivery in Experimental Disease Models. Front Med (Lausanne) 2022; 9:869372. [PMID: 35652064 PMCID: PMC9149176 DOI: 10.3389/fmed.2022.869372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/25/2022] [Indexed: 12/29/2022] Open
Abstract
Impaired oxygen utilization is the underlying pathophysiological process in different shock states. Clinically most important are septic and hemorrhagic shock, which comprise more than 75% of all clinical cases of shock. Both forms lead to severe dysfunction of the microcirculation and the mitochondria that can cause or further aggravate tissue damage and inflammation. However, the detailed mechanisms of acute and long-term effects of impaired oxygen utilization are still elusive. Importantly, a defective oxygen exploitation can impact multiple organs simultaneously and organ damage can be aggravated due to intense organ cross-talk or the presence of a systemic inflammatory response. Complexity is further increased through a large heterogeneity in the human population, differences in genetics, age and gender, comorbidities or disease history. To gain a deeper understanding of the principles, mechanisms, interconnections and consequences of impaired oxygen delivery and utilization, interdisciplinary preclinical as well as clinical research is required. In this review, we provide a "tool-box" that covers widely used animal disease models for septic and hemorrhagic shock and methods to determine the structure and function of the microcirculation as well as mitochondrial function. Furthermore, we suggest magnetic resonance imaging as a multimodal imaging platform to noninvasively assess the consequences of impaired oxygen delivery on organ function, cell metabolism, alterations in tissue textures or inflammation. Combining structural and functional analyses of oxygen delivery and utilization in animal models with additional data obtained by multiparametric MRI-based techniques can help to unravel mechanisms underlying immediate effects as well as long-term consequences of impaired oxygen delivery on multiple organs and may narrow the gap between experimental preclinical research and the human patient.
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Affiliation(s)
- Stefan Hof
- Department of Anaesthesiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Carsten Marcus
- Department of Anaesthesiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Anne Kuebart
- Department of Anaesthesiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Jan Schulz
- Department of Anaesthesiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Richard Truse
- Department of Anaesthesiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Annika Raupach
- Department of Anaesthesiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Inge Bauer
- Department of Anaesthesiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Ulrich Flögel
- Experimental Cardiovascular Imaging, Department of Molecular Cardiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Olaf Picker
- Department of Anaesthesiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Anna Herminghaus
- Department of Anaesthesiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Sebastian Temme
- Department of Anaesthesiology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
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Motiejunaite J, Deniau B, Blet A, Gayat E, Mebazaa A. Inotropes and vasopressors are associated with increased short-term mortality but not long-term survival in critically ill patients. Anaesth Crit Care Pain Med 2021; 41:101012. [PMID: 34952218 DOI: 10.1016/j.accpm.2021.101012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 11/03/2021] [Accepted: 11/08/2021] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Limited information is currently available on the impact of vasoactive medications in intensive care (ICU) and long-term outcomes. The main objective of our study was to describe the association between the use of inotropes and/or vasopressors and ICU mortality. Secondary objectives were to evaluate the association between the use of vasoactive drugs and in-hospital as well as 1-year all-cause mortality in ICU survivors. METHODS FROG-ICU was a prospective, observational, multi-centre cohort designed to investigate long-term mortality of critically ill adult patients. Cox proportional hazards models were used to evaluate the association between the use of inotropes and/or vasopressors and ICU mortality, as well as in-hospital and 1-year all-cause mortality in a propensity-score matched cohort. RESULTS The study included 2087 patients, 939 of whom received inotropes and/or vasopressors during the initial ICU stay. Patients treated with vasoactive medications were older and had a more severe clinical presentation. In a propensity score-matched cohort of 1201 patients, ICU mortality was higher in patients who received vasoactive medications (HR of 1.40 [1.10 - 1.78], p = 0.007). One thousand six hundred thirty-five patients survived the index ICU hospitalisation. There was no significant difference according to the use of inotropes and/or vasopressors in the propensity-score matched cohort on in-hospital mortality (HR of 0.94 [0.60 - 1.49], p = 0.808) as well as one-year all-cause mortality (HR 0.94 [0.71 - 1.24], p = 0.643). CONCLUSION Inotropic and/or vasopressor therapy is a strong predictor of in-ICU death. However, the use of inotropes and/or vasopressors during ICU admission was not associated with a worse prognosis after ICU discharge.
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Affiliation(s)
- Justina Motiejunaite
- Service de Physiologie - Explorations Fonctionnelles, Assistance Publique Hôpitaux de Paris, Hôpital Bichat-Claude Bernard, 46, rue Henri Huchard, 75018 Paris, France; Université de Paris, Paris, France.
| | - Benjamin Deniau
- Université de Paris, Paris, France; Department of Anaesthesiology and Critical Care, Department of Anaesthesia, Burn and Critical Care, University Hospitals Saint-Louis-Lariboisière, AP-HP, Paris, France; Inserm UMR-S 942 MASCOT, Lariboisière Hospital - Paris, France
| | - Alice Blet
- Université de Paris, Paris, France; Department of Anaesthesiology and Critical Care, Department of Anaesthesia, Burn and Critical Care, University Hospitals Saint-Louis-Lariboisière, AP-HP, Paris, France; Inserm UMR-S 942 MASCOT, Lariboisière Hospital - Paris, France
| | - Etienne Gayat
- Université de Paris, Paris, France; Department of Anaesthesiology and Critical Care, Department of Anaesthesia, Burn and Critical Care, University Hospitals Saint-Louis-Lariboisière, AP-HP, Paris, France; Inserm UMR-S 942 MASCOT, Lariboisière Hospital - Paris, France
| | - Alexandre Mebazaa
- Université de Paris, Paris, France; Department of Anaesthesiology and Critical Care, Department of Anaesthesia, Burn and Critical Care, University Hospitals Saint-Louis-Lariboisière, AP-HP, Paris, France; Inserm UMR-S 942 MASCOT, Lariboisière Hospital - Paris, France
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15
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van Leeuwen ALI, Borgdorff MP, Dekker NAM, van den Brom CE. Therapeutically Targeting Microvascular Leakage in Experimental Hemorrhagic SHOCK: A Systematic Review and Meta-Analysis. Shock 2021; 56:890-900. [PMID: 33927137 DOI: 10.1097/shk.0000000000001796] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
BACKGROUND Microvascular leakage is proposed as main contributor to disturbed microcirculatory perfusion following hemorrhagic shock and fluid resuscitation, leading to organ dysfunction and unfavorable outcome. Currently, no drugs are available to reduce or prevent microvascular leakage in clinical practice. We therefore aimed to provide an overview of therapeutic agents targeting microvascular leakage following experimental hemorrhagic shock and fluid resuscitation. METHODS PubMed, EMBASE.com, and Cochrane Library were searched in January 2021 for preclinical studies of hemorrhagic shock using any therapeutic agent on top of standard fluid resuscitation. Primary outcome was vascular leakage, defined as edema, macromolecule extravasation, or glycocalyx degradation. Drugs were classified by targeting pathways and subgroup analyses were performed per organ. RESULTS Forty-five studies, published between 1973 and 2020, fulfilled eligibility criteria. The included studies tested 54 different therapeutics mainly in pulmonary and intestinal vascular beds. Most studies induced trauma besides hemorrhagic shock. Forty-four therapeutics (81%) were found effective to reduce microvascular leakage, edema formation, or glycocalyx degradation in at least one organ. Targeting oxidative stress and apoptosis was the predominantly effective strategy (SMD: -2.18, CI [-3.21, -1.16], P < 0.0001). Vasoactive agents were found noneffective in reducing microvascular leakage (SMD: -0.86, CI [-3.07, 1.36], P = 0.45). CONCLUSION Pharmacological modulation of pathways involved in cell metabolism, inflammation, endothelial barrier regulation, sex hormones and especially oxidative stress and apoptosis were effective in reducing microvascular leakage in experimental hemorrhagic shock with fluid resuscitation. Future studies should investigate whether targeting these pathways can restore microcirculatory perfusion and reduce organ injury following hemorrhagic shock. SYSTEMATIC REVIEW REGISTRATION NUMBER CRD42018095432.
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Affiliation(s)
- Anoek L I van Leeuwen
- Department of Anesthesiology, Amsterdam UMC, VU University, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
- Department of Physiology, Amsterdam UMC, VU University, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - Marieke P Borgdorff
- Department of Anesthesiology, Amsterdam UMC, VU University, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - Nicole A M Dekker
- Department of Anesthesiology, Amsterdam UMC, VU University, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
- Department of Physiology, Amsterdam UMC, VU University, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - Charissa E van den Brom
- Department of Anesthesiology, Amsterdam UMC, VU University, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
- Department of Physiology, Amsterdam UMC, VU University, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
- Department of Intensive Care, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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16
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The authors reply. Crit Care Med 2021; 49:e346-e347. [PMID: 33616371 DOI: 10.1097/ccm.0000000000004870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
PURPOSE OF REVIEW Current goals of resuscitation in septic shock are mainly a fixed volume of fluids and vasopressors to correct hypotension and improve tissue perfusion indicated by decreasing lactate levels. RECENT FINDINGS Abnormal peripheral perfusion by objective and subjective parameters are associated with increased mortality in various phases of the treatment of critically ill patients including patients with septic shock. Ongoing resuscitation in septic shock patients with normal peripheral perfusion is not associated with improved outcome, rather with increased mortality. Mitigation of fluid resuscitation by using parameters of peripheral perfusion in septic shock seems to be safe. SUMMARY Septic shock patients with normal peripheral perfusion represent a different clinical phenotype of patients that might benefit from limited resuscitation efforts. Parameters of peripheral perfusion could be used to guide the individualization of patients with septic shock.
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Microcirculatory Changes in Pediatric Patients During Congenital Heart Defect Corrective Surgery. J Cardiovasc Transl Res 2021; 14:1173-1185. [PMID: 33948868 DOI: 10.1007/s12265-021-10132-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
A prospective, observational single-center study was carried out. Pediatric patients undergoing congenital heart defect surgery were evaluated before, during, and after surgery. At each time point, sublingual microcirculation and clinical parameters were assessed, along with analytical variables. Twenty-four patients were included. All microcirculatory parameters worsened during cardiopulmonary bypass and returned to baseline values after surgery (p ≤ 0.001). In the intraoperative evaluation, body temperature correlated with perfused small vessel density (p = 0.014), proportion of perfused small vessels (p < 0.001), small vessel microvascular flow index (p = 0.003), and small vessel heterogeneity index (p < 0.002). Patients with cyanotic disease exhibited higher small vessel density (p < 0.008) and higher density of perfused small vessels (p < 0.022) at baseline, and a lower microvascular flow index (p = 0.022) and higher heterogeneity (p = 0.026) in the intraoperative phase. Children with congenital heart disease exhibited decreased vascular density and microvascular blood flow and increased heterogeneity during cardiopulmonary bypass. All these parameters returned to baseline values after surgery.
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Behem CR, Graessler MF, Friedheim T, Kluttig R, Pinnschmidt HO, Duprée A, Debus ES, Reuter DA, Wipper SH, Trepte CJC. The use of pulse pressure variation for predicting impairment of microcirculatory blood flow. Sci Rep 2021; 11:9215. [PMID: 33911116 PMCID: PMC8080713 DOI: 10.1038/s41598-021-88458-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 04/12/2021] [Indexed: 02/07/2023] Open
Abstract
Dynamic parameters of preload have been widely recommended to guide fluid therapy based on the principle of fluid responsiveness and with regard to cardiac output. An equally important aspect is however to also avoid volume-overload. This accounts particularly when capillary leakage is present and volume-overload will promote impairment of microcirculatory blood flow. The aim of this study was to evaluate, whether an impairment of intestinal microcirculation caused by volume-load potentially can be predicted using pulse pressure variation in an experimental model of ischemia/reperfusion injury. The study was designed as a prospective explorative large animal pilot study. The study was performed in 8 anesthetized domestic pigs (German landrace). Ischemia/reperfusion was induced during aortic surgery. 6 h after ischemia/reperfusion-injury measurements were performed during 4 consecutive volume-loading-steps, each consisting of 6 ml kg−1 bodyweight−1. Mean microcirculatory blood flow (mean Flux) of the ileum was measured using direct laser-speckle-contrast-imaging. Receiver operating characteristic analysis was performed to determine the ability of pulse pressure variation to predict a decrease in microcirculation. A reduction of ≥ 10% mean Flux was considered a relevant decrease. After ischemia–reperfusion, volume-loading-steps led to a significant increase of cardiac output as well as mean arterial pressure, while pulse pressure variation and mean Flux were significantly reduced (Pairwise comparison ischemia/reperfusion-injury vs. volume loading step no. 4): cardiac output (l min−1) 1.68 (1.02–2.35) versus 2.84 (2.15–3.53), p = 0.002, mean arterial pressure (mmHg) 29.89 (21.65–38.12) versus 52.34 (43.55–61.14), p < 0.001, pulse pressure variation (%) 24.84 (17.45–32.22) versus 9.59 (1.68–17.49), p = 0.004, mean Flux (p.u.) 414.95 (295.18–534.72) versus 327.21 (206.95–447.48), p = 0.006. Receiver operating characteristic analysis revealed an area under the curve of 0.88 (CI 95% 0.73–1.00; p value < 0.001) for pulse pressure variation for predicting a decrease of microcirculatory blood flow. The results of our study show that pulse pressure variation does have the potential to predict decreases of intestinal microcirculatory blood flow due to volume-load after ischemia/reperfusion-injury. This should encourage further translational research and might help to prevent microcirculatory impairment due to excessive fluid resuscitation and to guide fluid therapy in the future.
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Affiliation(s)
- Christoph R Behem
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany.
| | - Michael F Graessler
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Till Friedheim
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Rahel Kluttig
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Hans O Pinnschmidt
- Department of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anna Duprée
- Department of Visceral- and Thoracic Surgery, Center of Operative Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - E Sebastian Debus
- Department of Vascular Medicine, University Heart and Vascular Center Hamburg GmbH (UHZ), Hamburg, Germany
| | - Daniel A Reuter
- Department of Anesthesiology and Intensive Care Medicine, Rostock University Medical Center, Rostock, Germany
| | - Sabine H Wipper
- University Department for Vascular Surgery, Department of Operative Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Constantin J C Trepte
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
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Scheeren TWL, Bakker J, Kaufmann T, Annane D, Asfar P, Boerma EC, Cecconi M, Chew MS, Cholley B, Cronhjort M, De Backer D, Dubin A, Dünser MW, Duranteau J, Gordon AC, Hajjar LA, Hamzaoui O, Hernandez G, Kanoore Edul V, Koster G, Landoni G, Leone M, Levy B, Martin C, Mebazaa A, Monnet X, Morelli A, Payen D, Pearse RM, Pinsky MR, Radermacher P, Reuter DA, Sakr Y, Sander M, Saugel B, Singer M, Squara P, Vieillard-Baron A, Vignon P, Vincent JL, van der Horst ICC, Vistisen ST, Teboul JL. Current use of inotropes in circulatory shock. Ann Intensive Care 2021; 11:21. [PMID: 33512597 PMCID: PMC7846624 DOI: 10.1186/s13613-021-00806-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 01/09/2021] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Treatment decisions on critically ill patients with circulatory shock lack consensus. In an international survey, we aimed to evaluate the indications, current practice, and therapeutic goals of inotrope therapy in the treatment of patients with circulatory shock. METHODS From November 2016 to April 2017, an anonymous web-based survey on the use of cardiovascular drugs was accessible to members of the European Society of Intensive Care Medicine (ESICM). A total of 14 questions focused on the profile of respondents, the triggering factors, first-line choice, dosing, timing, targets, additional treatment strategy, and suggested effect of inotropes. In addition, a group of 42 international ESICM experts was asked to formulate recommendations for the use of inotropes based on 11 questions. RESULTS A total of 839 physicians from 82 countries responded. Dobutamine was the first-line inotrope in critically ill patients with acute heart failure for 84% of respondents. Two-thirds of respondents (66%) stated to use inotropes when there were persistent clinical signs of hypoperfusion or persistent hyperlactatemia despite a supposed adequate use of fluids and vasopressors, with (44%) or without (22%) the context of low left ventricular ejection fraction. Nearly half (44%) of respondents stated an adequate cardiac output as target for inotropic treatment. The experts agreed on 11 strong recommendations, all of which were based on excellent (> 90%) or good (81-90%) agreement. Recommendations include the indications for inotropes (septic and cardiogenic shock), the choice of drugs (dobutamine, not dopamine), the triggers (low cardiac output and clinical signs of hypoperfusion) and targets (adequate cardiac output) and stopping criteria (adverse effects and clinical improvement). CONCLUSION Inotrope use in critically ill patients is quite heterogeneous as self-reported by individual caregivers. Eleven strong recommendations on the indications, choice, triggers and targets for the use of inotropes are given by international experts. Future studies should focus on consistent indications for inotrope use and implementation into a guideline for circulatory shock that encompasses individualized targets and outcomes.
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Affiliation(s)
- Thomas W. L. Scheeren
- Department of Anesthesiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O.Box 30.001, 9700 RB Groningen, The Netherlands
| | - Jan Bakker
- New York University Medical Center, New York, USA
- Columbia University Medical Center, New York, USA
- Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
- Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Thomas Kaufmann
- Department of Anesthesiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O.Box 30.001, 9700 RB Groningen, The Netherlands
| | - Djillali Annane
- School of Medicine Simone Veil, Raymond Poincaré Hospital (APHP), Department of Intensive Care Medicine, University of Versailles- University Paris Saclay, Garches, France
| | - Pierre Asfar
- Département de Médecine Intensive-Réanimation Et de Médecine Hyperbare, Centre Hospitalier Universitaire Angers; and Institut MITOVASC, CNRS UMR 6215, INSERM U1083, Angers University, Angers, France
| | - E. Christiaan Boerma
- Medical Centre Leeuwarden, Department of Intensive Care, Leeuwarden, the Netherlands
| | - Maurizio Cecconi
- Department of Anesthesia and Intensive Care, IRCCS Humanitas Research Hospital, Via Manzoni 56, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini, Milan, Italy
| | - Michelle S. Chew
- Department of Anaesthesiology and Intensive Care, Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Bernard Cholley
- Department of Anaesthesiology & Intensive Care Medicine, AP-HP, Hôpital Européen Georges Pompidou, Paris, France
- Université de Paris, Paris, France
| | - Maria Cronhjort
- Section of Anaesthesiology and Intensive Care, Department of Clinical Science and Education, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden
| | - Daniel De Backer
- Department of Intensive Care, CHIREC Hospitals, Université Libre de Bruxelles, Brussels, Belgium
| | - Arnaldo Dubin
- Cátedra de Farmacología Aplicada, Facultad de Ciencias Médicas, Universidad Nacional de La Plata Y Servicio de Terapia Intensiva, Sanatorio Otamendi, Buenos Aires, Argentina
| | - Martin W. Dünser
- Department of Anesthesiology and Intensive Care Medicine, Kepler University Hospital and Johannes Kepler University Linz, Linz, Austria
| | - Jacques Duranteau
- Department of Anaesthesia and Intensive Care, Assistance Publique Des Hopitaux de Paris, Hôpitaux Universitaires Paris-Saclay, Université Paris-Saclay, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - Anthony C. Gordon
- Division of Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, London, UK
| | - Ludhmila A. Hajjar
- Department of Cardiopneumology, Instituto Do Coracao, Universidade de São Paulo, Hospital SirioLibanes, São Paulo, Brazil
| | - Olfa Hamzaoui
- Assistance Publique-Hôpitaux de Paris, Paris Saclay University Hospitals, Antoine Béclère Hospital, Paris, France
| | - Glenn Hernandez
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Geert Koster
- Department of Critical Care, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Giovanni Landoni
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy
| | - Marc Leone
- Aix Marseille Université, Assistance Publique Hôpitaux de Marseille, Service D’Anesthésie Et de Réanimation CHU Nord, Marseille, France
| | - Bruno Levy
- Service de Réanimation Médicale Brabois Et Pôle Cardio-Médico-Chirurgical. CHRU Brabois, INSERM U1116, Université de Lorraine, Vandoeuvre les NancyNancy, 54500 France
| | - Claude Martin
- Aix Marseille Université, Assistance Publique Hôpitaux de Marseille, Service D’Anesthésie Et de Réanimation CHU Nord, Marseille, France
| | - Alexandre Mebazaa
- Department of Anesthesia, Burn and Critical Care, APHP Hôpitaux Universitaires Saint Louis LariboisièreUniversité Paris DiderotU942 Inserm, Paris, France
| | - Xavier Monnet
- Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Paris-Saclay University Hospitals, Bicêtre hospital, Le Kremlin-Bicêtre, France
- INSERM UMR_S 999, FHU SEPSIS, Le Kremlin-Bicêtre, France
| | - Andrea Morelli
- Department of Clinical Internal, Anesthesiological and Cardiovascular Science, Sapienza University of Rome, Rome, Italy
| | - Didier Payen
- University Paris 7 Denis Diderot; INSERM 1160 and Hôpital Lariboisière, APHP, Paris, France
| | - Rupert M. Pearse
- William Harvey Research Institute, Queen Mary University of London, London, EC1M 6BQ UK
| | - Michael R. Pinsky
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, USA
| | - Peter Radermacher
- Institut Für Anästhesiologische Pathophysiologie Und Verfahrensentwicklung, Universitätsklinikum Ulm, Ulm, Germany
| | - Daniel A. Reuter
- Department of Anesthesiology and Intensive Care Medicine, Rostock University Medical Centre, Rostock, Germany
| | - Yasser Sakr
- Department of Anesthesiology and Intensive Care, Uniklinikum Jena, Jena, Germany
| | - Michael Sander
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Giessen, UKGM, Justus-Liebig University Giessen, Giessen, Germany
| | - Bernd Saugel
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Mervyn Singer
- Bloomsbury Institute of Intensive Care Medicine, Division of Medicine, University College London, London, UK
| | - Pierre Squara
- ICU Department, Réanimation CERIC, Clinique Ambroise Paré, Neuilly, France
| | - Antoine Vieillard-Baron
- Assistance Publique-Hôpitaux de Paris, University Hospital Ambroise Paré, intensive care unit, Boulogne-Billancourt, France
- INSERM U-1018, CESP, Team 5, University of Versailles Saint-Quentin en Yvelines, Villejuif, France
| | - Philippe Vignon
- Medical-Surgical Intensive Care Unit, INSERM CIC-1435, Teaching Hospital of Limoges, Limoges, France
- University of Limoges, Limoges, France
| | - Jean-Louis Vincent
- Université Libre de Bruxelles - Dept of Intensive Care, Erasme Univ Hospital, Brussels, Belgium
| | - Iwan C. C. van der Horst
- Department of Intensive Care Medicine, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Simon T. Vistisen
- Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Anesthesia and Intensive Care, Aarhus University Hospital, Aarhus, Denmark
| | - Jean-Louis Teboul
- Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Paris-Saclay University Hospitals, Bicêtre hospital, Le Kremlin-Bicêtre, France
- INSERM UMR_S 999, FHU SEPSIS, Le Kremlin-Bicêtre, France
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21
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Roy TK, Secomb TW. Effects of impaired microvascular flow regulation on metabolism-perfusion matching and organ function. Microcirculation 2020; 28:e12673. [PMID: 33236393 DOI: 10.1111/micc.12673] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 11/17/2020] [Indexed: 12/14/2022]
Abstract
Impaired tissue oxygen delivery is a major cause of organ damage and failure in critically ill patients, which can occur even when systemic parameters, including cardiac output and arterial hemoglobin saturation, are close to normal. This review addresses oxygen transport mechanisms at the microcirculatory scale, and how hypoxia may occur in spite of adequate convective oxygen supply. The structure of the microcirculation is intrinsically heterogeneous, with wide variations in vessel diameters and flow pathway lengths, and consequently also in blood flow rates and oxygen levels. The dynamic processes of structural adaptation and flow regulation continually adjust microvessel diameters to compensate for heterogeneity, redistributing flow according to metabolic needs to ensure adequate tissue oxygenation. A key role in flow regulation is played by conducted responses, which are generated and propagated by endothelial cells and signal upstream arterioles to dilate in response to local hypoxia. Several pathophysiological conditions can impair local flow regulation, causing hypoxia and tissue damage leading to organ failure. Therapeutic measures targeted to systemic parameters may not address or may even worsen tissue oxygenation at the microvascular level. Restoration of tissue oxygenation in critically ill patients may depend on restoration of endothelial cell function, including conducted responses.
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Affiliation(s)
- Tuhin K Roy
- Department of Anesthesiology & Perioperative Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Timothy W Secomb
- Department of Physiology, University of Arizona, Tucson, AZ, 85724, USA
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22
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Abstract
PURPOSE OF REVIEW Currently, the treatment of patients with shock is focused on the clinical symptoms of shock. In the early phase, this is usually limited to heart rate, blood pressure, lactate levels and urine output. However, as the ultimate goal of resuscitation is the improvement in microcirculatory perfusion the question is whether these currently used signs of shock and the improvement in these signs actually correspond to the changes in the microcirculation. RECENT FINDINGS Recent studies have shown that during the development of shock the deterioration in the macrocirculatory parameters are followed by the deterioration of microcirculatory perfusion. However, in many cases the restoration of adequate macrocirculatory parameters is frequently not associated with improvement in microcirculatory perfusion. This relates not only to the cause of shock, where there are some differences between different forms of shock, but also to the type of treatment. SUMMARY The improvement in macrohemodynamics during the resuscitation is not consistently followed by subsequent changes in the microcirculation. This may result in both over-resuscitation and under-resuscitation leading to increased morbidity and mortality. In this article the principles of coherence and the monitoring of the microcirculation are reviewed.
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23
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Dickson K, Malitan H, Lehmann C. Imaging of the Intestinal Microcirculation during Acute and Chronic Inflammation. BIOLOGY 2020; 9:E418. [PMID: 33255906 PMCID: PMC7760140 DOI: 10.3390/biology9120418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022]
Abstract
Because of its unique microvascular anatomy, the intestine is particularly vulnerable to microcirculatory disturbances. During inflammation, pathological changes in blood flow, vessel integrity and capillary density result in impaired tissue oxygenation. In severe cases, these changes can progress to multiorgan failure and possibly death. Microcirculation may be evaluated in superficial tissues in patients using video microscopy devices, but these techniques do not allow the assessment of intestinal microcirculation. The gold standard for the experimental evaluation of intestinal microcirculation is intravital microscopy, a technique that allows for the in vivo examination of many pathophysiological processes including leukocyte-endothelial interactions and capillary blood flow. This review provides an overview of changes in the intestinal microcirculation in various acute and chronic inflammatory conditions. Acute conditions discussed include local infections, severe acute pancreatitis, necrotizing enterocolitis and sepsis. Inflammatory bowel disease and irritable bowel syndrome are included as examples of chronic conditions of the intestine.
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Affiliation(s)
- Kayle Dickson
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS B3H 4R2, Canada;
| | - Hajer Malitan
- Department of Anesthesia, Pain and Perioperative Management, Dalhousie University, Halifax, NS B3H 4R2, Canada;
| | - Christian Lehmann
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS B3H 4R2, Canada;
- Department of Anesthesia, Pain and Perioperative Management, Dalhousie University, Halifax, NS B3H 4R2, Canada;
- Department of Physiology and Biophysics, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Pharmacology, Dalhousie University, Halifax, NS B3H 4R2, Canada
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24
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van Leeuwen ALI, Dekker NAM, Jansma EP, Boer C, van den Brom CE. Therapeutic interventions to restore microcirculatory perfusion following experimental hemorrhagic shock and fluid resuscitation: A systematic review. Microcirculation 2020; 27:e12650. [PMID: 32688443 PMCID: PMC7757213 DOI: 10.1111/micc.12650] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 07/07/2020] [Accepted: 07/13/2020] [Indexed: 12/11/2022]
Abstract
Objective Microcirculatory perfusion disturbances following hemorrhagic shock and fluid resuscitation contribute to multiple organ dysfunction and mortality. Standard fluid resuscitation is insufficient to restore microcirculatory perfusion; however, additional therapies are lacking. We conducted a systematic search to provide an overview of potential non‐fluid‐based therapeutic interventions to restore microcirculatory perfusion following hemorrhagic shock. Methods A structured search of PubMed, EMBASE, and Cochrane Library was performed in March 2020. Animal studies needed to report at least one parameter of microcirculatory flow (perfusion, red blood cell velocity, functional capillary density). Results The search identified 1269 records of which 48 fulfilled all eligibility criteria. In total, 62 drugs were tested of which 29 were able to restore microcirculatory perfusion. Particularly, complement inhibitors (75% of drugs tested successfully restored blood flow), endothelial barrier modulators (100% successful), antioxidants (66% successful), drugs targeting cell metabolism (83% successful), and sex hormones (75% successful) restored microcirculatory perfusion. Other drugs consisted of attenuation of inflammation (100% not successful), vasoactive agents (68% not successful), and steroid hormones (75% not successful). Conclusion Improving mitochondrial function, inhibition of complement inhibition, and reducing microvascular leakage via restoration of endothelial barrier function seem beneficial to restore microcirculatory perfusion following hemorrhagic shock and fluid resuscitation.
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Affiliation(s)
- Anoek L I van Leeuwen
- Department of Anesthesiology, Experimental Laboratory for VItal Signs, Amsterdam UMC, Vrije Universiteit, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands.,Department of Physiology, Amsterdam UMC, Vrije Universiteit, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - Nicole A M Dekker
- Department of Anesthesiology, Experimental Laboratory for VItal Signs, Amsterdam UMC, Vrije Universiteit, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands.,Department of Physiology, Amsterdam UMC, Vrije Universiteit, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - Elise P Jansma
- Department of Epidemiology and Biostatistics, Amsterdam UMC, Vrije Universiteit, Amsterdam Public Health research institute, Amsterdam, The Netherlands.,Medical Library, Vrije Universiteit, Amsterdam, The Netherlands
| | - Christa Boer
- Department of Anesthesiology, Experimental Laboratory for VItal Signs, Amsterdam UMC, Vrije Universiteit, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - Charissa E van den Brom
- Department of Anesthesiology, Experimental Laboratory for VItal Signs, Amsterdam UMC, Vrije Universiteit, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands.,Department of Physiology, Amsterdam UMC, Vrije Universiteit, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
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25
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Woodward EL, Shen T, Ramsay JG. Suspected Lower Extremity Ischemia After End-to-Side Femoral Arterial Grafting for VA-ECMO. J Cardiothorac Vasc Anesth 2020; 35:1824-1829. [PMID: 32843269 DOI: 10.1053/j.jvca.2020.07.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/26/2020] [Accepted: 07/27/2020] [Indexed: 11/11/2022]
Abstract
Lower extremity ischemic complications are frequently encountered after femoral cannulation for venoarterial extracorporeal membrane oxygenation (VA-ECMO). Many are attributed to mechanical obstruction of distal arterial blood flow related to intraluminal positioning of the arterial cannula. Routine use of distal perfusion catheters is ineffective at eliminating the development of these serious complications. Side- arm grafting instead of direct arterial cannulation is suggested as an alternative. Here, the authors present a case wherein a patient developed suspected lower extremity ischemia from hyperperfusion after femoral VA-ECMO cannulation during use of an arterial side- arm graft, calling into question the benefits of this cannulation strategy.
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Affiliation(s)
| | - Tao Shen
- Department of Anesthesia, University of Southern California, Los Angeles, CA
| | - James G Ramsay
- Department of Anesthesia, UCSF Medical Center, San Francisco, CA
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26
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Single mean arterial blood pressure drops during stroke thrombectomy under general anaesthesia are associated with poor outcome. J Neurol 2020; 267:1331-1339. [PMID: 31955244 PMCID: PMC7184049 DOI: 10.1007/s00415-020-09701-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 01/07/2020] [Accepted: 01/09/2020] [Indexed: 01/29/2023]
Abstract
Background We examined the influence of periprocedural blood pressure (BP), especially critical BP drops, on 3-month functional outcome in stroke patients undergoing mechanical thrombectomy (MT) under general anaesthesia (GA). Methods We screened all patients with anterior circulation large vessel occlusion receiving MT under GA at our centre from January 2011 to June 2016 and selected those who had continuous invasive periinterventional BP monitoring. Clinical and radiological data were prospectively collected as part of an ongoing cohort study, monitoring data were extracted from electronic anaesthesia records. We used uni- and multivariable regression to investigate the association of BP values with unfavourable outcome, defined as modified Rankin Scale scores 3–6 3 months post-stroke. Results 115 patients were included in this study (mean age 65.3 ± 13.0 years, 55.7% male). Periinterventional systolic, diastolic, and mean arterial BP (MAP) values averaged across MT had no effect on outcome. However, single BP drops were related to unfavourable outcome, with absolute MAP drops showing the highest association compared to both systolic and relative BP drops (with reference to pre-interventional values). The BP value with the strongest association with unfavourable outcome was identified as an MAP ever < 60 mmHg (p = 0.01) with a pronounced effect in patients with poor collaterals. An MAP < 60 mmHg remained independently associated with poor functional outcome in multivariable analysis (p < 0.01). Conclusions For patients undergoing MT under GA, single MAP drops < 60 mmHg are independently related to unfavourable 3-month outcome. Therefore, every effort should be made to prevent periinterventional hypotensive episodes, especially below this threshold. Electronic supplementary material The online version of this article (10.1007/s00415-020-09701-x) contains supplementary material, which is available to authorized users.
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27
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Gazmuri RJ, de Gomez CA. From a pressure-guided to a perfusion-centered resuscitation strategy in septic shock: Critical literature review and illustrative case. J Crit Care 2020; 56:294-304. [PMID: 31926637 DOI: 10.1016/j.jcrc.2019.11.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 07/28/2019] [Accepted: 11/13/2019] [Indexed: 01/15/2023]
Abstract
PURPOSE To support a paradigm shift in the management of septic shock from pressure-guided to perfusion-centered, expected to improve outcome while reducing adverse effects from vasopressor therapy and aggressive fluid resuscitation. MATERIAL AND METHODS Critical review of the literature cited in support of vasopressor use to achieve a predefined mean arterial pressure (MAP) of 65 mmHg and review of pertinent clinical trials and studies enabling deeper understanding of the hemodynamic pathophysiology supportive of a perfusion-centered approach, accompanied by an illustrative case. RESULTS Review of the literature cited by the Surviving Sepsis Campaign revealed lack of controlled clinical trials supporting outcome benefits from vasopressors. Additional literature review revealed adverse effects associated with vasopressors and worsened outcome in some studies. Vasopressors increase MAP primarily by peripheral vasoconstriction and in occasions by a modest increase in cardiac output when using norepinephrine. Thus, achieving the recommended MAP of 65 mmHg using vasopressors should not be presumed indicative that organ perfusion has been restored. It may instead create a false sense of hemodynamic stability hampering shock resolution. CONCLUSIONS We propose focusing the hemodynamic management of septic shock on reversing organ hypoperfusion instead of attaining a predefined MAP target as the key strategy for improving outcome.
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Affiliation(s)
- Raúl J Gazmuri
- Medicine, Physiology & Biophysics, Resuscitation Institute at Rosalind Franklin University of Medicine and Science, Critical Care Medicine and ICU, Captain James A. Lovell Federal Health Care Center, USA.
| | - Cristina Añez de Gomez
- Internal Medicine Physician, Northwestern Medical Group, Northwestern Medicine Lake Forrest Hospital, USA
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28
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Spears JR. Reperfusion Microvascular Ischemia After Prolonged Coronary Occlusion: Implications And Treatment With Local Supersaturated Oxygen Delivery. HYPOXIA 2019; 7:65-79. [PMID: 31696129 PMCID: PMC6814765 DOI: 10.2147/hp.s217955] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 09/20/2019] [Indexed: 12/16/2022]
Abstract
Following a prolonged coronary arterial occlusion, heterogeneously scattered, focal regions of low erythrocyte flow are commonly found throughout the reperfused myocardium. Experimental studies have also demonstrated the presence of widespread, focally patchy regions of microvascular ischemia during reperfusion (RMI). However, the potential contribution of RMI to tissue viability and function has received little attention in the absence of practical clinical methods for its detection. In this review, the anatomic/functional basis of RMI is summarized, along with the evidence for its presence in reperfused myocardium. Advances in microcirculation research related to obstructive responses of vascular endothelial cells and blood elements to the effects of hypoxia and low shear stress are discussed, and a potential cycle of intensification of RMI from such responses and progressive loss of functional capillary density is presented. In capillaries with impaired erythrocyte flow, compensatory increases in the delivery of oxygen, because of its low solubility in plasma, are effective only at high partial pressures. As discussed herein, attenuation of the cycle with oxygen at hyperbaric levels in plasma is, very likely, responsible for improved tissue level perfusion noted experimentally. Observed clinical benefits from intracoronary SuperSaturated oxygen (SSO2) delivery, including infarct size reduction, can be attributed to attenuation of RMI with improvement in microvascular blood flow.
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Affiliation(s)
- James Richard Spears
- Cardiovascular Research Laboratory, Department of Medicine, Division of Cardiology, Beaumont Heart & Vascular Center, Dearborn, MI 48124, USA
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29
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Ackland GL, Brudney CS, Cecconi M, Ince C, Irwin MG, Lacey J, Pinsky MR, Grocott MPW, Mythen MG, Edwards MR, Miller TE, Miller TE, Mythen MG, Grocott MPW, Edwards MR, Ackland GL, Brudney CS, Cecconi M, Ince C, Irwin MG, Lacey J, Pinsky MR, Sanders R, Hughes F, Bader A, Thompson A, Hoeft A, Williams D, Shaw AD, Sessler DI, Aronson S, Berry C, Gan TJ, Kellum J, Plumb J, Bloomstone J, McEvoy MD, Thacker JK, Gupta R, Koepke E, Feldheiser A, Levett D, Michard F, Hamilton M. Perioperative Quality Initiative consensus statement on the physiology of arterial blood pressure control in perioperative medicine. Br J Anaesth 2019; 122:542-551. [DOI: 10.1016/j.bja.2019.01.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 12/10/2018] [Accepted: 01/02/2019] [Indexed: 01/19/2023] Open
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30
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Scheeren TWL, Bakker J, De Backer D, Annane D, Asfar P, Boerma EC, Cecconi M, Dubin A, Dünser MW, Duranteau J, Gordon AC, Hamzaoui O, Hernández G, Leone M, Levy B, Martin C, Mebazaa A, Monnet X, Morelli A, Payen D, Pearse R, Pinsky MR, Radermacher P, Reuter D, Saugel B, Sakr Y, Singer M, Squara P, Vieillard-Baron A, Vignon P, Vistisen ST, van der Horst ICC, Vincent JL, Teboul JL. Current use of vasopressors in septic shock. Ann Intensive Care 2019; 9:20. [PMID: 30701448 PMCID: PMC6353977 DOI: 10.1186/s13613-019-0498-7] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 01/22/2019] [Indexed: 12/29/2022] Open
Abstract
Background Vasopressors are commonly applied to restore and maintain blood pressure in patients with sepsis. We aimed to evaluate the current practice and therapeutic goals regarding vasopressor use in septic shock as a basis for future studies and to provide some recommendations on their use. Methods From November 2016 to April 2017, an anonymous web-based survey on the use of vasoactive drugs was accessible to members of the European Society of Intensive Care Medicine (ESICM). A total of 17 questions focused on the profile of respondents, triggering factors, first choice agent, dosing, timing, targets, additional treatments, and effects of vasopressors. We investigated whether the answers complied with current guidelines. In addition, a group of 34 international ESICM experts was asked to formulate recommendations for the use of vasopressors based on 6 questions with sub-questions (total 14). Results A total of 839 physicians from 82 countries (65% main specialty/activity intensive care) responded. The main trigger for vasopressor use was an insufficient mean arterial pressure (MAP) response to initial fluid resuscitation (83%). The first-line vasopressor was norepinephrine (97%), targeting predominantly a MAP > 60–65 mmHg (70%), with higher targets in patients with chronic arterial hypertension (79%). The experts agreed on 10 recommendations, 9 of which were based on unanimous or strong (≥ 80%) agreement. They recommended not to delay vasopressor treatment until fluid resuscitation is completed but rather to start with norepinephrine early to achieve a target MAP of ≥ 65 mmHg. Conclusion Reported vasopressor use in septic shock is compliant with contemporary guidelines. Future studies should focus on individualized treatment targets including earlier use of vasopressors.
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Affiliation(s)
- Thomas W L Scheeren
- Department of Anesthesiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, P.O. Box 30.001, 9700RB, Groningen, The Netherlands.
| | - Jan Bakker
- New York University Medical Center, New York, USA.,Columbia University Medical Center, New York, USA.,Erasmus MC University Medical Center, Rotterdam, Netherlands.,Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Daniel De Backer
- Department of Intensive Care, CHIREC Hospitals, Université Libre de Bruxelles, Brussels, Belgium
| | - Djillali Annane
- Department of Intensive Care Medicine, School of Medicine Simone Veil, Raymond Poincaré Hospital (APHP), University of Versailles-University Paris Saclay, 104 boulevard Raymond Poincaré, 92380, Garches, France
| | - Pierre Asfar
- Département de Médecine Intensive-Réanimation et de Médecine Hyperbare, Centre Hospitalier Universitaire Angers, Institut MITOVASC, CNRS, UMR 6214, INSERM U1083, Angers University, Angers, France
| | - E Christiaan Boerma
- Department of Intensive Care, Medical Centre Leeuwarden, Leeuwarden, The Netherlands
| | - Maurizio Cecconi
- Department of Anaesthesia and Intensive Care Units, Humanitas Research Hospital and Humanitas University, Milan, Italy
| | - Arnaldo Dubin
- Cátedra de Farmacología Aplicada, Facultad de Ciencias Médicas, Universidad Nacional de La Plata y Servicio de Terapia Intensiva, Sanatorio Otamendi, Buenos Aires, Argentina
| | - Martin W Dünser
- Department of Anesthesiology and Intensive Care Medicine, Kepler University Hospital and Johannes Kepler University Linz, Linz, Austria
| | - Jacques Duranteau
- Assistance Publique des Hopitaux de Paris, Department of Anaesthesia and Intensive Care, Hôpitaux Universitaires Paris-Sud, Université Paris-Sud, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - Anthony C Gordon
- Section of Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, London, UK
| | - Olfa Hamzaoui
- Assistance Publique-Hôpitaux de Paris Paris-Sud University Hospitals, Intensive Care Unit, Antoine Béclère Hospital, Clamart, France
| | - Glenn Hernández
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Marc Leone
- Assistance Publique Hôpitaux de Marseille, Service d'Anesthésie et de Réanimation CHU Nord, Aix Marseille Université, Marseille, France
| | - Bruno Levy
- Service de Réanimation Médicale Brabois et pôle cardio-médico-chirurgical, CHRU, INSERM U1116, Université de Lorraine, Brabois, 54500, Vandoeuvre les Nancy, France
| | - Claude Martin
- Assistance Publique Hôpitaux de Marseille, Service d'Anesthésie et de Réanimation CHU Nord, Aix Marseille Université, Marseille, France
| | - Alexandre Mebazaa
- Department of Anesthesia, Burn and Critical Care, APHP Hôpitaux Universitaires Saint Louis Lariboisière, U942 Inserm, Université Paris Diderot, Paris, France
| | - Xavier Monnet
- Assistance Publique-Hôpitaux de Paris, Paris-Sud University Hospitals, Medical Intensive Care Unit, Bicêtre Hospital, Le Kremlin-Bicêtre, France.,INSERM UMR_S 999, Paris-Saclay University, Le Plessis-Robinson, France
| | - Andrea Morelli
- Department of Cardiovascular, Respiratory, Nephrological, Anesthesiological and Geriatric Sciences, University of Rome "La Sapienza", Rome, Italy
| | - Didier Payen
- INSERM 1160 and Hôpital Lariboisière, APHP, University Paris 7 Denis Diderot, Paris, France
| | | | - Michael R Pinsky
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, USA
| | - Peter Radermacher
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum, Ulm, Germany
| | - Daniel Reuter
- Department of Anesthesiology and Intensive Care Medicine, Rostock University Medical Centre, Rostock, Germany
| | - Bernd Saugel
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Yasser Sakr
- Department of Anesthesiology and Intensive Care, Uniklinikum Jena, Jena, Germany
| | - Mervyn Singer
- Bloomsbury Institute of Intensive Care Medicine, Division of Medicine, University College London, London, UK
| | - Pierre Squara
- ICU Department, Réanimation CERIC, Clinique Ambroise Paré, Neuilly, France
| | - Antoine Vieillard-Baron
- Assistance Publique-Hôpitaux de Paris, Intensive Care Unit, University Hospital Ambroise Paré, Boulogne-Billancourt, France.,INSERM U-1018, CESP, Team 5, University of Versailles Saint-Quentin en Yvelines, Villejuif, France
| | - Philippe Vignon
- Medical-Surgical Intensive Care Unit, INSERM CIC-1435, Teaching Hospital of Limoges, University of Limoges, Limoges, France
| | - Simon T Vistisen
- Institute of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Iwan C C van der Horst
- Department of Critical Care, University Medical Center Groningen, University of Groningen, Hanzeplein 1, P.O. Box 30.001, 9700 RB, Groningen, The Netherlands
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Jean-Louis Teboul
- Service de Réanimation Médicale, Hôpital de Bicêtre, Hôpitaux Universitaires Paris-Sud, Le Kremlin-Bicêtre, France
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Loggi S, Mininno N, Damiani E, Marini B, Adrario E, Scorcella C, Domizi R, Carsetti A, Pantanetti S, Pagliariccio G, Carbonari L, Donati A. Changes in the sublingual microcirculation following aortic surgery under balanced or total intravenous anaesthesia: a prospective observational study. BMC Anesthesiol 2019; 19:1. [PMID: 30611197 PMCID: PMC6320625 DOI: 10.1186/s12871-018-0673-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 12/26/2018] [Indexed: 12/19/2022] Open
Abstract
Background In vascular surgery with aortic cross-clamping, ischemia/reperfusion injury induces systemic haemodynamic and microcirculatory disturbances. Different anaesthetic regimens may have a varying impact on tissue perfusion. The aim of this study was to explore changes in microvascular perfusion in patients undergoing elective open abdominal aortic aneurysm repair under balanced or total intravenous anaesthesia. Methods Prospective observational study. Patients undergoing elective open infrarenal abdominal aortic aneurysm repair received balanced (desflurane + remifentanil, n = 20) or total intravenous anaesthesia (TIVA, propofol + remifentanil using target-controlled infusion, n = 20) according to the clinician’s decision. A goal-directed haemodynamic management was applied in all patients. Measurements were obtained before anaesthesia induction (baseline) and at end-surgery and included haemodynamics, arterial/venous blood gases, sublingual microvascular flow and density (incident dark field illumination imaging), peripheral muscle tissue oxygenation and microcirculatory reactivity (thenar near infrared spectroscopy with a vascular occlusion test). Results The two groups did not differ for baseline characteristics, mean aortic-clamping time and requirement of vasoactive agents during surgery. Changes in mean arterial pressure, systemic vascular resistance index, haemoglobin and blood lactate levels were similar between the two groups, while the cardiac index increased at end-surgery in patients undergoing balanced anaesthesia. The sublingual microcirculation was globally unaltered in the TIVA group at end-surgery, while patients undergoing balanced anaesthesia showed an increase in the total and perfused small vessel densities (from 16.6 ± 4.2 to 19.1 ± 5.4 mm/mm2, p < 0.05). Changes in microvascular density were negatively correlated with changes in the systemic vascular resistance index. The area of reactive hyperaemia during the VOT increased in the balanced anaesthesia group (from 14.8 ± 8.1 to 25.6 ± 14.8%*min, p < 0.05). At end-surgery, the tissue haemoglobin index in the TIVA group was lower than that in the balanced anaesthesia group. Conclusions In patients undergoing elective open abdominal aortic aneurysm repair with a goal-directed hemodynamic management, indices of sublingual or peripheral microvascular perfusion/oxygenation were globally preserved with both balanced anaesthesia and TIVA. Patients undergoing balanced anaesthesia showed microvascular recruitment at end-surgery. Trial registration NCT03510793, https://www.clinicaltrials.gov, date of registration April 27th 2018, retrospectively registered.
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Affiliation(s)
- Silvia Loggi
- Anaesthesia and Intensive Care Unit, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, via Tronto 10/a, 60126, Torrette di Ancona, Italy
| | - Nicoletta Mininno
- Anaesthesia and Intensive Care Unit, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, via Tronto 10/a, 60126, Torrette di Ancona, Italy
| | - Elisa Damiani
- Anaesthesia and Intensive Care Unit, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, via Tronto 10/a, 60126, Torrette di Ancona, Italy
| | - Benedetto Marini
- Anaesthesia and Intensive Care Unit, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, via Tronto 10/a, 60126, Torrette di Ancona, Italy
| | - Erica Adrario
- Anaesthesia and Intensive Care Unit, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, via Tronto 10/a, 60126, Torrette di Ancona, Italy
| | - Claudia Scorcella
- Anaesthesia and Intensive Care Unit, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, via Tronto 10/a, 60126, Torrette di Ancona, Italy
| | - Roberta Domizi
- Anaesthesia and Intensive Care Unit, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, via Tronto 10/a, 60126, Torrette di Ancona, Italy
| | - Andrea Carsetti
- Anaesthesia and Intensive Care Unit, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, via Tronto 10/a, 60126, Torrette di Ancona, Italy
| | - Simona Pantanetti
- Anaesthesia and Intensive Care Unit, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, via Tronto 10/a, 60126, Torrette di Ancona, Italy
| | - Gabriele Pagliariccio
- Unit of Vascular Surgery, Azienda Ospedaliera Universitaria "Ospedali Riuniti Umberto I - Lancisi - Salesi" of Ancona, Ancona, Italy
| | - Luciano Carbonari
- Unit of Vascular Surgery, Azienda Ospedaliera Universitaria "Ospedali Riuniti Umberto I - Lancisi - Salesi" of Ancona, Ancona, Italy
| | - Abele Donati
- Anaesthesia and Intensive Care Unit, Department of Biomedical Sciences and Public Health, Università Politecnica delle Marche, via Tronto 10/a, 60126, Torrette di Ancona, Italy.
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Annane D, Ouanes-Besbes L, de Backer D, DU B, Gordon AC, Hernández G, Olsen KM, Osborn TM, Peake S, Russell JA, Cavazzoni SZ. A global perspective on vasoactive agents in shock. Intensive Care Med 2018; 44:833-846. [PMID: 29868972 DOI: 10.1007/s00134-018-5242-5] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/22/2018] [Indexed: 01/09/2023]
Abstract
PURPOSE We set out to summarize the current knowledge on vasoactive drugs and their use in the management of shock to inform physicians' practices. METHODS This is a narrative review by a multidisciplinary, multinational-from six continents-panel of experts including physicians, a pharmacist, trialists, and scientists. RESULTS AND CONCLUSIONS Vasoactive drugs are an essential part of shock management. Catecholamines are the most commonly used vasoactive agents in the intensive care unit, and among them norepinephrine is the first-line therapy in most clinical conditions. Inotropes are indicated when myocardial function is depressed and dobutamine remains the first-line therapy. Vasoactive drugs have a narrow therapeutic spectrum and expose the patients to potentially lethal complications. Thus, these agents require precise therapeutic targets, close monitoring with titration to the minimal efficacious dose and should be weaned as promptly as possible. Moreover, the use of vasoactive drugs in shock requires an individualized approach. Vasopressin and possibly angiotensin II may be useful owing to their norepinephrine-sparing effects.
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Affiliation(s)
- Djillali Annane
- General ICU, Raymond Poincaré Hospital (APHP), School of Medicine Simone Veil U1173 Laboratory of Infection and Inflammation (University of Versailles SQY, University Paris Saclay/INSERM), CRICS-TRIGERSEP Network (F-CRIN), 104 boulevard Raymond Poincaré, 92380, Garches, France.
| | | | - Daniel de Backer
- Department of Intensive Care, CHIREC Hospitals, Université Libre de Bruxelles, Brussels, Belgium
| | - Bin DU
- Medical ICU, Peking Union Medical College Hospital, 1 Shuai Fu Yuan, 100730, Beijing, China
| | - Anthony C Gordon
- Section of Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, London, UK
| | - Glenn Hernández
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Tiffany M Osborn
- Section of Acute Care Surgical Services, Surgical/Trauma Critical Care, Barnes Jewish Hospital, St. Louis, MI, USA
| | - Sandra Peake
- Department of Intensive Care, The Queen Elizabeth Hospital School of Medicine, University of Adelaide, Adelaide, SA, Australia.,School of Epidemiology and Preventive Medicine, Monash University, Victoria, Australia
| | - James A Russell
- Centre for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, 1081 Burrard Street, Vancouver, BC, Canada
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Abstract
PURPOSE OF REVIEW Critical illness includes a wide range of conditions from sepsis to high-risk surgery. All these diseases are characterized by reduced tissue oxygenation. Macrohemodynamic parameters may be corrected by fluids and/or vasoactive compounds; however, the microcirculation and its tissues may be damaged and remain hypoperfused. An evaluation of microcirculation may enable more physiologically based approaches for understanding the pathogenesis, diagnosis, and treatment of critically ill patients. RECENT FINDINGS Microcirculation plays a pivotal role in delivering oxygen to the cells and maintains tissue perfusion. Negative results of several studies, based on conventional hemodynamic resuscitation procedures to achieve organ perfusion and decrease morbidity and mortality following conditions of septic shock and other cardiovascular compromise, have highlighted the need to monitor microcirculation. The loss of hemodynamic coherence between the macrocirculation and microcirculation, wherein improvement of hemodynamic variables of the systemic circulation does not cause a parallel improvement of microcirculatory perfusion and oxygenation of the essential organ systems, may explain why these studies have failed. SUMMARY Critical illness is usually accompanied by abnormalities in microcirculation and tissue hypoxia. Direct monitoring of sublingual microcirculation using hand-held microscopy may provide a more physiological approach. Evaluating the coherence between macrocirculation and microcirculation in response to therapy seems to be essential in evaluating the efficacy of therapeutic interventions.
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Noel-Morgan J, Muir WW. Anesthesia-Associated Relative Hypovolemia: Mechanisms, Monitoring, and Treatment Considerations. Front Vet Sci 2018; 5:53. [PMID: 29616230 PMCID: PMC5864866 DOI: 10.3389/fvets.2018.00053] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 03/02/2018] [Indexed: 12/14/2022] Open
Abstract
Although the utility and benefits of anesthesia and analgesia are irrefutable, their practice is not void of risks. Almost all drugs that produce anesthesia endanger cardiovascular stability by producing dose-dependent impairment of cardiac function, vascular reactivity, and compensatory autoregulatory responses. Whereas anesthesia-related depression of cardiac performance and arterial vasodilation are well recognized adverse effects contributing to anesthetic risk, far less emphasis has been placed on effects impacting venous physiology and venous return. The venous circulation, containing about 65–70% of the total blood volume, is a pivotal contributor to stroke volume and cardiac output. Vasodilation, particularly venodilation, is the primary cause of relative hypovolemia produced by anesthetic drugs and is often associated with increased venous compliance, decreased venous return, and reduced response to vasoactive substances. Depending on factors such as patient status and monitoring, a state of relative hypovolemia may remain clinically undetected, with impending consequences owing to impaired oxygen delivery and tissue perfusion. Concurrent processes related to comorbidities, hypothermia, inflammation, trauma, sepsis, or other causes of hemodynamic or metabolic compromise, may further exacerbate the condition. Despite scientific and technological advances, clinical monitoring and treatment of relative hypovolemia still pose relevant challenges to the anesthesiologist. This short perspective seeks to define relative hypovolemia, describe the venous system’s role in supporting normal cardiovascular function, characterize effects of anesthetic drugs on venous physiology, and address current considerations and challenges for monitoring and treatment of relative hypovolemia, with focus on insights for future therapies.
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Affiliation(s)
- Jessica Noel-Morgan
- Center for Cardiovascular & Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, United States
| | - William W Muir
- QTest Labs, Columbus, OH, United States.,College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN, United States
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Abstract
Microcirculatory abnormalities have been shown to be frequent in patients with septic shock despite "normalization" of systemic hemodynamics. Several studies have explored the impact of vasodilator therapy (prostacyclin, inhaled nitric oxide, topic acetylcholine, and nitroglycerin) on microcirculation and tissue perfusion, with contradictory findings.In this narrative review, we briefly present the pathophysiological aspects of microcirculatory dysfunction, and depict the evidence supporting the use of vasodilators and other therapeutic interventions (fluid administration, blood transfusion, vasopressors, and dobutamine) aiming to improve the microcirculatory flow in septic shock patients.
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Gelbart B. Fluid Bolus Therapy in Pediatric Sepsis: Current Knowledge and Future Direction. Front Pediatr 2018; 6:308. [PMID: 30410875 PMCID: PMC6209667 DOI: 10.3389/fped.2018.00308] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 10/01/2018] [Indexed: 12/21/2022] Open
Abstract
Sepsis is a leading cause of morbidity and mortality in children with a worldwide prevalence in pediatric intensive care units of approximately 8%. Fluid bolus therapy (FBT) is a first line therapy for resuscitation of septic shock and has been a recommendation of international guidelines for nearly two decades. The evidence base supporting these guidelines are based on limited data including animal studies and case control studies. In recent times, evidence suggesting harm from fluid in terms of morbidity and mortality have generated interest in evaluating FBT. In view of this, studies of fluid restrictive strategies in adults and children have emerged. The complexity of studying FBT relates to several points. Firstly, the physiological and haemodynamic response to FBT including magnitude and duration is not well described in children. Secondly, assessment of the circulation is based on non-specific clinical signs and limited haemodynamic monitoring with limited physiological targets. Thirdly, FBT exists in a complex myriad of pathophysiological responses to sepsis and other confounding therapies. Despite this, a greater understanding of the role of FBT in terms of the physiological response and possible harm is warranted. This review outlines current knowledge and future direction for FBT in sepsis.
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Affiliation(s)
- Ben Gelbart
- Paediatric Intensive Care Unit Royal Children's Hospital, Melbourne, VIC, Australia.,Murdoch Childrens Research Institute, Melbourne, VIC, Australia.,The University of Melbourne, Melbourne, VIC, Australia
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Boërio D, Corrêa TD, Jakob SM, Ackermann KA, Bostock H, Z'Graggen WJ. Muscle membrane properties in A pig sepsis model: Effect of norepinephrine. Muscle Nerve 2017; 57:808-813. [PMID: 29130505 DOI: 10.1002/mus.26013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2017] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Sepsis-induced myopathy and critical illness myopathy are common causes of muscle weakness in intensive care patients. This study investigated the effect of different mean arterial blood pressure (MAP) levels on muscle membrane properties following experimental sepsis. METHODS Sepsis was induced with fecal peritonitis in 12 of 18 anesthetized and mechanically ventilated pigs. Seven were treated with a high (75-85 mmHg) and 5 were treated with a low (≥60 mmHg) MAP target for resuscitation. In septic animals, resuscitation was started 12 h after peritonitis induction, and muscle velocity recovery cycles were recorded 30 h later. RESULTS Muscles in the sepsis/high MAP group showed an increased relative refractory period and reduced early supernormality compared with the remaining septic animals and the control group, indicating membrane depolarization and/or sodium channel inactivation. The membrane abnormalities correlated positively with norepinephrine dose. DISCUSSION Norepinephrine may contribute to sepsis-induced abnormalities in muscle by impairing microcirculation. Muscle Nerve 57: 808-813, 2018.
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Affiliation(s)
- Delphine Boërio
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Thiago D Corrêa
- Intensive Care Unit, Hospital Israelita Albert Einstein, São Paulo, Brazil.,Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Stephan M Jakob
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Karin A Ackermann
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Hugh Bostock
- Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, London, United Kingdom
| | - Werner J Z'Graggen
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, Switzerland
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Koch KU, Tietze A, Aanerud J, Öettingen GV, Juul N, Sørensen JCH, Nikolajsen L, Østergaard L, Rasmussen M. Effect of ephedrine and phenylephrine on brain oxygenation and microcirculation in anaesthetised patients with cerebral tumours: study protocol for a randomised controlled trial. BMJ Open 2017; 7:e018560. [PMID: 29151054 PMCID: PMC5701991 DOI: 10.1136/bmjopen-2017-018560] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
INTRODUCTION During brain tumour surgery, vasopressor drugs are commonly administered to increase mean arterial blood pressure with the aim of maintaining sufficient cerebral perfusion pressure. Studies of the commonly used vasopressors show that brain oxygen saturation is reduced after phenylephrine administration, but unaltered by ephedrine administration. These findings may be explained by different effects of phenylephrine and ephedrine on the cerebral microcirculation, in particular the capillary transit-time heterogeneity, which determines oxygen extraction efficacy. We hypothesised that phenylephrine is associated with an increase in capillary transit-time heterogeneity and a reduction in cerebral metabolic rate of oxygen compared with ephedrine. Using MRI and positron emission tomography (PET) as measurements in anaesthetised patients with brain tumours, this study will examine whether phenylephrine administration elevates capillary transit-time heterogeneity more than ephedrine, thereby reducing brain oxygenation. METHODS AND ANALYSIS This is a double-blind, randomised clinical trial including 48 patients scheduled for surgical brain tumour removal. Prior to imaging and surgery, anaesthetised patients will be randomised to receive either phenylephrine or ephedrine infusion until mean arterial blood pressure increases to above 60 mm Hg or 20% above baseline. Twenty-four patients were allocated to MRI and another 24 patients to PET examination. MRI measurements include cerebral blood flow, capillary transit-time heterogeneity, cerebral blood volume, blood mean transit time, and calculated oxygen extraction fraction and cerebral metabolic rate of oxygen for negligible tissue oxygen extraction. PET measurements include cerebral metabolic rate of oxygen, cerebral blood flow and oxygen extraction fraction. Surgery is initiated after MRI/PET measurements and subdural intracranial pressure is measured. ETHICS AND DISSEMINATION This study was approved by the Central Denmark Region Committee on Health Research Ethics (12 June 2015; 1-10-72-116-15). Results will be disseminated via peer-reviewed publication and presentation at international conferences. TRIAL REGISTRATION NUMBER NCT02713087; Pre-results. 2015-001359-60; Pre-results.
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Affiliation(s)
- Klaus Ulrik Koch
- Department of Anesthesiology and Intensive Care-North, Section of Neuroanesthesia, Aarhus University Hospital, Aarhus, Denmark
| | - Anna Tietze
- Department of Neuroradiology and Center of Functionally Integrative Neuroscience, Aarhus University Hospital, Aarhus, Denmark
- Institute of Neuroradiology, Charite Universitatsmedizin, Berlin, Germany
| | - Joel Aanerud
- Department of Nuclear Medicine and PET Center, Aarhus University Hospital, Aarhus, Denmark
| | | | - Niels Juul
- Department of Anesthesiology and Intensive Care-North, Section of Neuroanesthesia, Aarhus University Hospital, Aarhus, Denmark
| | | | - Lone Nikolajsen
- Department of Anesthesiology and Intensive Care-North, Section of Neuroanesthesia, Aarhus University Hospital, Aarhus, Denmark
| | - Leif Østergaard
- Department of Neuroradiology and Center of Functionally Integrative Neuroscience, Aarhus University Hospital, Aarhus, Denmark
| | - Mads Rasmussen
- Department of Anesthesiology and Intensive Care-North, Section of Neuroanesthesia, Aarhus University Hospital, Aarhus, Denmark
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Krupičková P, Mormanová Z, Bouček T, Belza T, Šmalcová J, Bělohlávek J. Microvascular perfusion in cardiac arrest: a review of microcirculatory imaging studies. Perfusion 2017; 33:8-15. [DOI: 10.1177/0267659117723455] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cardiac arrest represents a leading cause of mortality and morbidity in developed countries. Extracorporeal cardiopulmonary resuscitation (ECPR) increases the chances for a beneficial outcome in victims of refractory cardiac arrest. However, ECPR and post-cardiac arrest care are affected by high mortality rates due to multi-organ failure syndrome, which is closely related to microcirculatory disorders. Therefore, microcirculation represents a key target for therapeutic interventions in post-cardiac arrest patients. However, the evaluation of tissue microcirculatory perfusion is still demanding to perform. Novel videomicroscopic technologies (Orthogonal polarization spectral, Sidestream dark field and Incident dark field imaging) might offer a promising way to perform bedside microcirculatory assessment and therapy monitoring. This review aims to summarise the recent body of knowledge on videomicroscopic imaging in a cardiac arrest setting and to discuss the impact of extracorporeal reperfusion and other therapeutic modalities on microcirculation.
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Affiliation(s)
- Petra Krupičková
- First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- Department of Neonatology with NICU, Motol University Hospital, Prague, Czech Republic
| | - Zuzana Mormanová
- Department of Neonatology, Krajska Nemocnice Liberec, a. s., Liberec, Czech Republic
| | - Tomáš Bouček
- 2nd Department of Medicine - Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Tomáš Belza
- First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
| | - Jana Šmalcová
- 2nd Department of Medicine - Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Jan Bělohlávek
- 2nd Department of Medicine - Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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Effect of Pulsatility on Microcirculation in Patients Treated with Extracorporeal Cardiopulmonary Resuscitation: A Pilot Study. ASAIO J 2017; 63:386-391. [DOI: 10.1097/mat.0000000000000492] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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Correction of dilutional anemia induces renal dysfunction in diabetic patients undergoing coronary artery bypass grafting: a consequence of microcirculatory alterations? J Nephrol 2017; 31:417-422. [PMID: 28332137 DOI: 10.1007/s40620-017-0388-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 03/08/2017] [Indexed: 01/29/2023]
Abstract
BACKGROUND In this study we aimed to evaluate the effects of dilutional anemia resulting from cardiopulmonary bypass (CPB) and its correction with red blood cell (RBC) transfusion on tissue oxygenation and renal function in diabetic patients undergoing coronary artery bypass grafting (CABG). METHOD 70 diabetic patients who underwent elective CABG and whose hematocrit values had been between 24-28% at any time during CBP were prospectively randomized and equally allocated to two groups: patients who received RBC during CPB (group I, n = 35) vs. did not receive RBC during CPB (group II, n = 35). Besides routine hemodynamic and biochemical parameters, biomarkers of ischemia and renal injury such as ischemia modified albumin (IMA), protein oxidation parameters [advanced oxidative protein products (AOPP), total thiol (T-SH)], neutrophil gelatinase-associated lipocalin (NGAL) and estimated glomerular filtration rate (eGFR) were measured in both groups. RESULTS In group I, T-SH, NGAL and urea levels were found to be significantly increased postoperatively compared to preoperative measurements (p < 0.05). Also, postoperatively, NGAL, creatinine, aspartate aminotransferase and AOPP levels were higher in group I than group II (p < 0.05). CONCLUSION The correction of anemia with RBC transfusion in diabetic patients undergoing CABG could increase the risk of renal injury. Further studies verifying the effects of blood transfusions at the microcirculatory level are needed to optimize the efficacy of transfusions.
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43
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Influence of postoperative vasoactive agent administration on free flap outcomes. EUROPEAN JOURNAL OF PLASTIC SURGERY 2016. [DOI: 10.1007/s00238-016-1223-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kuiper JW, Tibboel D, Ince C. The vulnerable microcirculation in the critically ill pediatric patient. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2016; 20:352. [PMID: 27794361 PMCID: PMC5086412 DOI: 10.1186/s13054-016-1496-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In neonates, cardiovascular system development does not stop after the transition from intra-uterine to extra-uterine life and is not limited to the macrocirculation. The microcirculation (MC), which is essential for oxygen, nutrient, and drug delivery to tissues and cells, also develops. Developmental changes in the microcirculatory structure continue to occur during the initial weeks of life in healthy neonates. The physiologic hallmarks of neonates and developing children make them particularly vulnerable during critical illness; however, the cardiovascular monitoring possibilities are limited compared with critically ill adult patients. Therefore, the development of non-invasive methods for monitoring the MC is necessary in pediatric critical care for early identification of impending deterioration and to enable the initiation and titration of therapy to ensure cell survival. To date, the MC may be non-invasively monitored at the bedside using hand-held videomicroscopy, which provides useful information regarding the microcirculation. There is an increasing number of studies on the MC in neonates and pediatric patients; however, additional steps are necessary to transition MC monitoring from bench to bedside. The recently introduced concept of hemodynamic coherence describes the relationship between changes in the MC and macrocirculation. The loss of hemodynamic coherence may result in a depressed MC despite an improvement in the macrocirculation, which represents a condition associated with adverse outcomes. In the pediatric intensive care unit, the concept of hemodynamic coherence may function as a framework to develop microcirculatory measurements towards implementation in daily clinical practice.
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Affiliation(s)
- J W Kuiper
- Intensive Care and Department of Pediatric Surgery, Erasmus Medical Center - Sophia Children's Hospital, Postbox 2040, 3000 CA, Rotterdam, The Netherlands.
| | - D Tibboel
- Intensive Care and Department of Pediatric Surgery, Erasmus Medical Center - Sophia Children's Hospital, Postbox 2040, 3000 CA, Rotterdam, The Netherlands
| | - C Ince
- Department of Intensive Care, Erasmus MC, University Medical Center Rotterdam, 's-Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands
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High Levels of Methylarginines Were Associated With Increased Mortality in Patients With Severe Sepsis. Shock 2016; 46:365-72. [DOI: 10.1097/shk.0000000000000649] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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46
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Sakr HF, Abbas AM, Bin-Jaliah I. Modulation of the neurological and vascular complications by grape seed extract in a rat model of spinal cord ischemia–reperfusion injury by downregulation of both osteopontin and cyclooxygenase-2. Can J Physiol Pharmacol 2016; 94:719-27. [DOI: 10.1139/cjpp-2015-0498] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In this study, we investigated the effects of grape seed extract (GSE) on the expression of osteopontin (OPN) and cyclooxygenase-2 (COX-2) in a rat model of spinal cord ischemia–reperfusion injury (SC-IRI). Fifty male rats were divided into 5 groups: control (CON); control + GSE (CON + GSE) (received GSE for 28 days); sham operated (Sham); IRI; and IRI + GSE. SC-IRI was induced by clamping the aorta just above the bifurcation for 45 min, and then the clamp was released for 48 h for reperfusion. IRI + GSE group received GSE for 28 days before SC-IRI. Sensory, motor, and placing/stepping reflex assessment was performed. Prostaglandin E2 (PGE2), thiobarbituric acid reactive substances (TBARs), and total antioxidant capacity (TAC) were measured in spinal cord homogenate. Immunohistochemical examination of the spinal cord for OPN and COX-2 were carried out. SC-IRI resulted in significant increase in plasma nitrite/nitrate level and spinal cord homogenate levels of TBARs and PGE2, and OPN and COX-2 expression with significant decrease in TAC. GSE improves the sensory and motor functions through decreasing OPN and COX-2 expression with reduction of oxidative stress parameters. We conclude a neuroprotective effect of GSE in SC-IRI through downregulating COX-2 and OPN expression plus its antioxidants effects.
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Affiliation(s)
- Hussein F. Sakr
- Medical Physiology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- Medical Physiology Department, College of Medicine, King Khalid University, KSA
| | - Amr M. Abbas
- Medical Physiology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Ismaeel Bin-Jaliah
- Medical Physiology Department, College of Medicine, King Khalid University, KSA
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Miranda M, Balarini M, Caixeta D, Bouskela E. Microcirculatory dysfunction in sepsis: pathophysiology, clinical monitoring, and potential therapies. Am J Physiol Heart Circ Physiol 2016; 311:H24-35. [DOI: 10.1152/ajpheart.00034.2016] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/20/2016] [Indexed: 02/06/2023]
Abstract
Abnormal microvascular perfusion, including decreased functional capillary density and increased blood flow heterogeneity, is observed in early stages of the systemic inflammatory response to infection and appears to have prognostic significance in human sepsis. It is known that improvements in systemic hemodynamics are weakly correlated with the correction of microcirculatory parameters, despite an appropriate treatment of macrohemodynamic abnormalities. Furthermore, conventional hemodynamic monitoring systems available in clinical practice fail to detect microcirculatory parameter changes and responses to treatments, as they do not evaluate intrinsic events that occur in the microcirculation. Fortunately, some bedside diagnostic methods and therapeutic options are specifically directed to the assessment and treatment of microcirculatory changes. In the present review we discuss fundamental aspects of septic microcirculatory abnormalities, including pathophysiology, clinical monitoring, and potential therapies.
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Affiliation(s)
- Marcos Miranda
- Laboratory for Clinical and Experimental Research in Vascular Biology, BioVasc, Biomedical Center, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| | - Michelle Balarini
- Internal Medicine Department, Andaraí Federal Hospital, Rio de Janeiro, RJ, Brazil; and
| | | | - Eliete Bouskela
- Laboratory for Clinical and Experimental Research in Vascular Biology, BioVasc, Biomedical Center, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
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Intravenous loading of nitroglycerin during rewarming of cardiopulmonary bypass improves metabolic homeostasis in cardiac surgery: a retrospective analysis. J Anesth 2016; 30:779-88. [DOI: 10.1007/s00540-016-2207-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 06/13/2016] [Indexed: 12/28/2022]
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Microcirculatory changes during cardiac surgery with cardiopulmonary bypass. ACTA ACUST UNITED AC 2016; 63:513-518. [PMID: 27095670 DOI: 10.1016/j.redar.2016.03.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 03/04/2016] [Accepted: 03/12/2016] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To evaluate microcirculation in intermediate and high mortality risk patients undergoing cardiac surgery (CS) with cardiopulmonary bypass (CPB). PATIENTS AND METHODS The study included 22 patients with a Euroscore >3. Using the Videomicroscopy Side Stream Dark Field system, and evaluation was made of, capillary density, proportion of perfused capillaries, density of perfused capillaries, microcirculatory flow index (MFI), and heterogeneity flow index. Three to five video sequences were recorded: after induction of anaesthesia (T1), at the beginning of the CPB (T2), before finalising CPB (T3), at the end of the surgery, and before the patient was transferred to Intensive Care Unit (T4). Mean arterial pressure decreased, while the blood lactate increased significantly, when comparing the initial and final values (P<.05). MFI increased significantly in T3 and T4 (P<.05) with regards to the initial values. When the patients with and without postoperative complications were compared, significant differences were found in, Euroscore, left ventricular ejection fraction, and MFI in T3. CONCLUSIONS in patients with intermediate/high preoperative risk, CS and CBP can involve an increase in MFI and blood lactate at the end of the study. These alterations suggest the possibility of a functional microcirculatory shunt at tissue perfusion level, secondary to the surgical injury and the CPB. Further investigation is needed to have a better understanding of the mechanisms involved.
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Tatara T. Context-sensitive fluid therapy in critical illness. J Intensive Care 2016; 4:20. [PMID: 26985394 PMCID: PMC4793702 DOI: 10.1186/s40560-016-0150-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 03/11/2016] [Indexed: 12/19/2022] Open
Abstract
Microcirculatory alterations are frequently observed in critically ill patients undergoing major surgery and those who suffer from trauma or sepsis. Despite the need for adequate fluid administration to restore microcirculation, there is no consensus regarding optimal fluid therapy for these patients. The recent recognition of the importance of the endothelial glycocalyx layer in capillary fluid and solute exchange has largely changed our views on fluid therapy in critical illness. Given that disease status largely differs among critically ill patients, fluid therapy must not be considered generally, but rather tailored to the clinical condition of each patient. This review outlines the current understanding of context-sensitive volume expansion by fluid solutions and considers its clinical implications for critically ill patients. The modulation of capillary hydrostatic pressure through the appropriate use of vasopressors may increase the effectiveness of fluid infusion and thereby reduce detrimental effects resulting from excessive fluid administration.
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Affiliation(s)
- Tsuneo Tatara
- Department of Anesthesiology and Pain Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501 Japan
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