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Donnino MW, Berg KM, Vine J, Balaji L, Berlin N, Cocchi MN, Moskowitz A, Chase M, Li F, Mehta S, Silverman J, Heydrick S, Liu X, Grossestreuer AV. Thiamine as a metabolic resuscitator after out-of-hospital cardiac arrest. Resuscitation 2024; 198:110158. [PMID: 38428720 DOI: 10.1016/j.resuscitation.2024.110158] [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: 01/12/2024] [Revised: 02/15/2024] [Accepted: 02/23/2024] [Indexed: 03/03/2024]
Abstract
INTRODUCTION Thiamine is a key cofactor for aerobic metabolism, previously shown to improve mortality and neurological outcomes in a mouse model of cardiac arrest. We hypothesized that thiamine would decrease lactate and improve outcomes in post-arrest patients. METHODS Single center, randomized, blinded, placebo-controlled, Phase II trial of thiamine in adults within 4.5 hours of return of spontaneous circulation after out-of-hospital cardiac arrest (OHCA), with coma and lactate ≥ 3 mmol/L. Participants received 500 mg IV thiamine or placebo twice daily for 2 days. Randomization was stratified by lactate > 5 or ≤ 5 mmol/L. The primary outcome of lactate was checked at baseline, 6, 12, and 24 hours, and compared using a linear mixed model to account for repeated measures. Secondary outcomes included SOFA score, pyruvate dehydrogenase, renal injury, neurological outcome, and mortality. RESULTS Of 93 randomized patients, 76 were enrolled and included in the analysis. There was no difference in lactate over 24 hours (mean difference 0.34 mmol/L (95% CI: -1.82, 2.50), p = 0.43). There was a significant interaction between randomization lactate subgroup and the effect of the intervention on mortality (p = 0.01) such that mortality was higher with thiamine in the lactate > 5 mmol/L group and lower with thiamine in the < 5 mmol/L group. This subgroup difference prompted the Data and Safety Monitoring Board to recommend the study be terminated early. PDH activity increased over 72 hours in the thiamine group. There were no differences in other secondary outcomes. CONCLUSION In this single-center randomized trial, thiamine did not affect lactate over 24 hours after OHCA.
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Affiliation(s)
- Michael W Donnino
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA; Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA; Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA.
| | - Katherine M Berg
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA; Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA
| | - Jacob Vine
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA
| | - Lakshman Balaji
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA
| | - Noa Berlin
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA; Department of Clinical Sciences, Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Road, North Grafton, MA 01536, United States
| | - Michael N Cocchi
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA; Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA
| | - Ari Moskowitz
- Division of Critical Care Medicine, Montefiore Medical Center, 111 East 210th Street, Bronx, NY 10467, USA; Bronx Center for Critical Care Outcomes and Resuscitation Research, 111 East 210th Street, Bronx, NY 10467, USA
| | - Maureen Chase
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA
| | - Franklin Li
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA
| | - Shivani Mehta
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA; New York Institute of Technology College of Osteopathic Medicine, 101 Northern Boulevard, Glen Head, NY 11545, USA
| | - Jeremy Silverman
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA
| | - Stanley Heydrick
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA
| | - Xiaowen Liu
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA
| | - Anne V Grossestreuer
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Rosenberg 2, Boston, MA 02215, USA
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Krychtiuk KA, Speidl WS. Initial haemodynamic assessment of cardiogenic shock: back to basics? EUROPEAN HEART JOURNAL. ACUTE CARDIOVASCULAR CARE 2023; 12:661-662. [PMID: 37672666 DOI: 10.1093/ehjacc/zuad103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 09/04/2023] [Indexed: 09/08/2023]
Affiliation(s)
- Konstantin A Krychtiuk
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Walter S Speidl
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Waehringer Guertel 18-20, 1090 Vienna, Austria
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Hoeyer-Nielsen AK, Holmberg MJ, Grossestreuer AV, Yankama T, Berg KM, Donnino MW. OXYGEN CONSUMPTION AS AN EARLY WARNING SYSTEM IN THE CRITICALLY ILL. Shock 2023; 60:539-544. [PMID: 37752082 DOI: 10.1097/shk.0000000000002208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
ABSTRACT Introduction: In this study, we assessed whether changes in oxygen consumption (VO 2 ) and other metabolic parameters could be used as an early warning system for detecting clinical deterioration in mechanically ventilated patients. Methods: This was a prospective cohort study of adult patients requiring mechanical ventilation between February 2016 and March 2019. We looked for changes in VO 2 , carbon dioxide production (VCO 2 ), respiratory quotient (RQ), and end-tidal carbon dioxide (EtCO 2 ), occurring prior to clinical deterioration. Clinical deterioration was predefined as a requirement of vasopressor, an increase in serum lactate by 20% where at least one value was above 3 mmol/L, or a decrease in hemoglobin by 20% in the 4 hours prior to clinical deterioration. Results A total of 141 patients were included. There were no detectable changes in VO 2 , VCO 2 , and EtCO 2 within the 4 hours prior to any clinical deterioration. RQ increased significantly within the 4 hours prior to an increase in lactate as compared with no increase in lactate, but there were no detectable changes prior to other clinical deteriorations. Conclusions RQ has the potential to be an early marker of tissue hypoperfusion or mitochondrial dysfunction. However, future studies are necessary to evaluate the use of RQ as a bedside monitor in critical care settings.
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Affiliation(s)
| | | | - Anne V Grossestreuer
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Tuyen Yankama
- Department of Pharmacy, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | | | - Michael W Donnino
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
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Taiana M, Tomasella I, Russo A, Lerose A, Ceola Graziadei M, Corubolo L, Rama J, Schweiger V, Vignola A, Polati E, Luciani GB, Onorati F, Donadello K, Gottin L. Analysis of P(v-a)CO 2/C(a-v)O 2 Ratio and Other Perfusion Markers in a Population of 98 Pediatric Patients Undergoing Cardiac Surgery. J Clin Med 2023; 12:5700. [PMID: 37685767 PMCID: PMC10488867 DOI: 10.3390/jcm12175700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 08/23/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023] Open
Abstract
BACKGROUND The so-called Low Cardiac Output Syndrome (LCOS) is one of the most common complications in pediatric patients with congenital heart disease undergoing corrective surgery. LCOS requires high concentrations of inotropes to support cardiac contractility and improve cardiac output, allowing for better systemic perfusion. To date, serum lactate concentrations and central venous oxygen saturation (ScVO2) are the most commonly used perfusion markers, but they are not completely reliable in identifying a state of global tissue hypoxia. The study aims to evaluate whether the venoarterial carbon dioxide difference/arterial-venous oxygen difference ratio [P(v-a)CO2/C(a-v)O2] can be a good index to predict the development of LCOS in the aforementioned patients, so as to treat it promptly. METHODS This study followed a population of 98 children undergoing corrective cardiac surgery from June 2018 to October 2020 at the Department of Cardiac Surgery of University Hospital Integrated Trust and their subsequent admission at the Postoperative Cardiothoracic Surgery Intensive Care Unit. During the study, central arterial and venous blood gas analyses were carried out before and after cardiopulmonary bypass (CPB) (pre-CPB and post-CPB), at admission to the intensive care unit, before and after extubation, and at any time of instability or modification of the patient's clinical and therapeutic conditions. RESULTS The data analysis shows that 46.9% of the children developed LCOS (in line with the current literature) but that there is no statistically significant association between the P(v-a)CO2/C(a-v)O2 ratio and LCOS onset. Despite the limits of statistical significance, however, a 31% increase in the ratio emerged from the pre-CPB phase to the post-CPB phase when LCOS is present. CONCLUSIONS This study confirms a statistically significant association between the most used markers in adult patients (serum lactate concentration, ScVO2, and oxygen extraction ratio-ERO2) measured in the pre-CPB phase and the incidence of LCOS onset, especially in patients with hemodynamic instability before surgery.
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Affiliation(s)
- Matteo Taiana
- Cardiothoracic and Vascular Intensive Care Unit, Hospital and University Trust of Verona, P. le A. Stefani, 37124 Verona, Italy; (I.T.); (A.R.); (M.C.G.); (L.C.); (J.R.); (L.G.)
| | - Irene Tomasella
- Cardiothoracic and Vascular Intensive Care Unit, Hospital and University Trust of Verona, P. le A. Stefani, 37124 Verona, Italy; (I.T.); (A.R.); (M.C.G.); (L.C.); (J.R.); (L.G.)
| | - Alessandro Russo
- Cardiothoracic and Vascular Intensive Care Unit, Hospital and University Trust of Verona, P. le A. Stefani, 37124 Verona, Italy; (I.T.); (A.R.); (M.C.G.); (L.C.); (J.R.); (L.G.)
| | - Annalisa Lerose
- Anesthesia and Intensive Care Unit, Magalini Hospital ULSS 9 Scaligera, Villafranca, 37069 Verona, Italy;
| | - Marcello Ceola Graziadei
- Cardiothoracic and Vascular Intensive Care Unit, Hospital and University Trust of Verona, P. le A. Stefani, 37124 Verona, Italy; (I.T.); (A.R.); (M.C.G.); (L.C.); (J.R.); (L.G.)
| | - Luisa Corubolo
- Cardiothoracic and Vascular Intensive Care Unit, Hospital and University Trust of Verona, P. le A. Stefani, 37124 Verona, Italy; (I.T.); (A.R.); (M.C.G.); (L.C.); (J.R.); (L.G.)
| | - Jacopo Rama
- Cardiothoracic and Vascular Intensive Care Unit, Hospital and University Trust of Verona, P. le A. Stefani, 37124 Verona, Italy; (I.T.); (A.R.); (M.C.G.); (L.C.); (J.R.); (L.G.)
| | - Vittorio Schweiger
- Anesthesia and Intensive Care Unit, Policlinico G.B. Rossi, Hospital and University Trust of Verona, P. le L. Scuro, 37129 Verona, Italy; (V.S.); (E.P.); (K.D.)
| | - Alessandro Vignola
- Emergency Medicine Department, Hospital and University Trust of Verona, P. le A. Stefani, 37126 Verona, Italy
| | - Enrico Polati
- Anesthesia and Intensive Care Unit, Policlinico G.B. Rossi, Hospital and University Trust of Verona, P. le L. Scuro, 37129 Verona, Italy; (V.S.); (E.P.); (K.D.)
| | - Giovanni Battista Luciani
- Cardiac Surgery Unit, Hospital and University Trust of Verona, P. le A. Stefani, 37126 Verona, Italy; (G.B.L.); (F.O.)
| | - Francesco Onorati
- Cardiac Surgery Unit, Hospital and University Trust of Verona, P. le A. Stefani, 37126 Verona, Italy; (G.B.L.); (F.O.)
| | - Katia Donadello
- Anesthesia and Intensive Care Unit, Policlinico G.B. Rossi, Hospital and University Trust of Verona, P. le L. Scuro, 37129 Verona, Italy; (V.S.); (E.P.); (K.D.)
| | - Leonardo Gottin
- Cardiothoracic and Vascular Intensive Care Unit, Hospital and University Trust of Verona, P. le A. Stefani, 37124 Verona, Italy; (I.T.); (A.R.); (M.C.G.); (L.C.); (J.R.); (L.G.)
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Veraar C, Fischer A, Bernardi MH, Sulz I, Mouhieddine M, Dworschak M, Tschernko E, Lassnigg A, Hiesmayr M. Absent Metabolic Transition from the Early to the Late Period in Non-Survivors Post Cardiac Surgery. Nutrients 2022; 14:nu14163366. [PMID: 36014872 PMCID: PMC9416122 DOI: 10.3390/nu14163366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/10/2022] [Accepted: 08/16/2022] [Indexed: 11/16/2022] Open
Abstract
After major surgery, longitudinal changes in resting energy expenditure (REE) as well as imbalances in oxygen delivery (DO2) and distribution and processing (VO2) may occur due to dynamic metabolic requirements, an impaired macro- and microcirculatory flow and mitochondrial dysfunction. However, the longitudinal pattern of these parameters in critically ill patients who die during hospitalization remains unknown. Therefore, we analyzed in 566 patients who received a pulmonary artery catheter (PAC) their REE, DO2, VO2 and oxygen extraction ratio (O2ER) continuously in survivors and non-survivors over the first 7 days post cardiac surgery, calculated the percent increase in the measured compared with the calculated REE and investigated the impact of a reduced REE on 30-day, 1-year and 6-year mortality in a uni- and multivariate model. Only in survivors was there a statistically significant transition from a negative to a positive energy balance from day 0 until day 1 (Day 0: −3% (−18, 14) to day 1: 5% (−9, 21); p < 0.001). Furthermore, non-survivors had significantly decreased DO2 during the first 4 days and reduced O2ER from day 2 until day 6. Additionally, a lower REE was significantly associated with a worse survival at 30 days, 1 year and 6 years (p = 0.009, p < 0.0001 and p = 0.012, respectively). Non-survivors seemed to be unable to metabolically adapt from the early (previously called the ‘ebb’) phase to the later ‘flow’ phase. DO2 reduction was more pronounced during the first three days whereas O2ER was markedly lower during the following four days, suggesting a switch from a predominantly limited oxygen supply to prolonged mitochondrial dysfunction. The association between a reduced REE and mortality further emphasizes the importance of REE monitoring.
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Affiliation(s)
- Cecilia Veraar
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Division of Cardiac Thoracic Vascular Anesthesia and Intensive Care Medicine, Medical University of Vienna, 1090 Vienna, Austria
- Correspondence:
| | - Arabella Fischer
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Division of Cardiac Thoracic Vascular Anesthesia and Intensive Care Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Martin H. Bernardi
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Division of Cardiac Thoracic Vascular Anesthesia and Intensive Care Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Isabella Sulz
- Center for Medical Statistics, Institute for Medical Statistics, Informatics and Intelligent Systems, Medical University Vienna, 1090 Vienna, Austria
| | - Mohamed Mouhieddine
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Division of Cardiac Thoracic Vascular Anesthesia and Intensive Care Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Martin Dworschak
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Division of Cardiac Thoracic Vascular Anesthesia and Intensive Care Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Edda Tschernko
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Division of Cardiac Thoracic Vascular Anesthesia and Intensive Care Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Andrea Lassnigg
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Division of Cardiac Thoracic Vascular Anesthesia and Intensive Care Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Michael Hiesmayr
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Division of Cardiac Thoracic Vascular Anesthesia and Intensive Care Medicine, Medical University of Vienna, 1090 Vienna, Austria
- Center for Medical Statistics, Institute for Medical Statistics, Informatics and Intelligent Systems, Medical University Vienna, 1090 Vienna, Austria
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Hernández-Leiva E, Hernández-Huertas F. The use of inotropes and not hyperchloremia is an independent risk factor for acute kidney injury during the postoperative period of cardiac surgery. A prospective cohort-study. INTERNATIONAL JOURNAL OF SURGERY OPEN 2022. [DOI: 10.1016/j.ijso.2022.100507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Hirayama I, Asada T, Yamamoto M, Hayase N, Hiruma T, Doi K. Changes in carbon dioxide production and oxygen uptake evaluated using indirect calorimetry in mechanically ventilated patients with sepsis. Crit Care 2021; 25:416. [PMID: 34863262 PMCID: PMC8645073 DOI: 10.1186/s13054-021-03830-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 11/17/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Several clinical guidelines recommend monitoring blood lactate levels and central venous oxygen saturation for hemodynamic management of patients with sepsis. We hypothesized that carbon dioxide production (VCO2) and oxygen extraction (VO2) evaluated using indirect calorimetry (IC) might provide additional information to understand the dynamic metabolic changes in sepsis. METHODS Adult patients with sepsis who required mechanical ventilation in the intensive care unit (ICU) of our hospital between September 2019 and March 2020 were prospectively enrolled. Sepsis was diagnosed according to Sepsis-3. Continuous measurement of VCO2 and VO2 using IC for 2 h was conducted within 24 h after tracheal intubation, and the changes in VCO2 and VO2 over 2 h were calculated as the slopes by linear regression analysis. Furthermore, temporal lactate changes were evaluated. The primary outcome was 28-day survival. RESULTS Thirty-four patients with sepsis were enrolled, 26 of whom survived 76%. Significant differences in the slope of VCO2 (- 1.412 vs. - 0.446) (p = 0.012) and VO2 (- 2.098 vs. - 0.851) (p = 0.023) changes were observed between non-survivors and survivors. Of note, all eight non-survivors and 17 of the 26 survivors showed negative slopes of VCO2 and VO2 changes. For these patients, 17 survivors had a median lactate of - 2.4% changes per hour (%/h), whereas non-survivors had a median lactate of 2.6%/hr (p = 0.023). CONCLUSIONS The non-survivors in this study showed temporal decreases in both VCO2 and VO2 along with lactate elevation. Monitoring the temporal changes in VCO2 and VO2 along with blood lactate levels may be useful in predicting the prognosis of sepsis.
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Affiliation(s)
- Ichiro Hirayama
- Department of Emergency and Critical Care Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Toshifumi Asada
- Department of Emergency and Critical Care Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Miyuki Yamamoto
- Department of Emergency and Critical Care Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Naoki Hayase
- Department of Emergency and Critical Care Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Takahiro Hiruma
- Department of Emergency and Critical Care Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kent Doi
- Department of Emergency and Critical Care Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
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Huppert EL, Parnia S. Cerebral oximetry: a developing tool for monitoring cerebral oxygenation during cardiopulmonary resuscitation. Ann N Y Acad Sci 2021; 1509:12-22. [PMID: 34780070 DOI: 10.1111/nyas.14706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 09/25/2021] [Accepted: 10/01/2021] [Indexed: 11/30/2022]
Abstract
Despite improvements in cardiopulmonary resuscitation (CPR), survival and neurologic recovery after cardiac arrest remain very poor because of the impact of severe ischemia and subsequent reperfusion injury. As the likelihood of survival and favorable neurologic outcome decreases with increasing severity of ischemia during CPR, developing methods to measure the magnitude of ischemia during resuscitation, particularly cerebral ischemia, is critical for improving overall outcomes. Cerebral oximetry, which measures regional cerebral oxygen saturation (rSO2 ) by near-infrared spectroscopy, has emerged as a potentially beneficial marker of cerebral ischemia during CPR. In numerous preclinical and clinical studies, higher rSO2 during CPR has been associated with improved cardiac arrest survival and neurologic outcome. In this narrative review, we summarize the scientific rationale and validation of cerebral oximetry across populations and pathophysiologic states, discuss the evidence surrounding its use to predict return of spontaneous circulation, rearrest, and neurologic outcome, and provide suggestions for incorporation of cerebral oximetry into CPR practice.
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Affiliation(s)
- Elise L Huppert
- Critical Care and Resuscitation Research Center, New York University Grossman School of Medicine, New York University Langone Health, New York, New York.,Division of Pulmonary, Critical Care & Sleep Medicine, New York University Grossman School of Medicine, New York University Langone Health, New York, New York
| | - Sam Parnia
- Critical Care and Resuscitation Research Center, New York University Grossman School of Medicine, New York University Langone Health, New York, New York.,Division of Pulmonary, Critical Care & Sleep Medicine, New York University Grossman School of Medicine, New York University Langone Health, New York, New York.,Division of Pulmonary, Critical Care & Sleep Medicine, New York University Langone Health, New York, New York
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Hoeyer-Nielsen AK, Holmberg MJ, Grossestreuer AV, Yankama T, Branton JP, Donnino MW, Berg KM. Association Between the Oxygen Consumption: Lactate Ratio and Survival in Critically Ill Patients With Sepsis. Shock 2021; 55:775-781. [PMID: 32881760 PMCID: PMC10391351 DOI: 10.1097/shk.0000000000001661] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Mitochondrial dysfunction leading to impairment of oxygen extraction, referred to as cytopathic hypoxia, contributes to morbidity in sepsis. Oxygen consumption (VO2) may be a useful measure of the severity of cytopathic hypoxia. We monitored VO2 and carbon dioxide production (VCO2) in septic patients and investigated the association with hospital survival. METHODS We retrospectively identified adult (≥18 years) septic patients from a larger prospective observational cohort of critically ill patients on mechanical ventilation. A gas-exchange monitor recorded continuous VO2 and VCO2 for up to 48 h. We then tested the association of median VO2, VCO2, respiratory quotient (RQ), and the VO2:lactate ratio with survival. RESULTS A total of 46 septic patients were included in the analysis, of whom 28 (61%) survived. Overall median VO2 was not associated with survival (3.72 mL/kg/min [IQR: 3.39, 4.92] in survivors and 3.42 mL/kg/min [IQR: 2.97, 5.26] in non-survivors, P = 0.12). The overall median VCO2 and RQ were also not associated with survival. Adjusting for age and the presence of shock did not change these results. The VO2:lactate ratio was associated with survival (adjusted OR 2.17 [95% CI 1.12, 4.22] per unit increase in ratio, P = 0.03). The percent change in median VCO2 was 11.6% [IQR: -8.2, 28.7] in survivors compared with -8.3% [IQR: -18.0, 4.7] in non-survivors (P = 0.03). The percent changes in median VO2 and RQ were not different between groups. CONCLUSION The VO2:lactate ratio was significantly higher in survivors, while there was no association between median VO2 alone and survival. There was a significant difference in change in VCO2 over time between survivors and non-survivors.
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Affiliation(s)
- Anne Kirstine Hoeyer-Nielsen
- Centre for Prehospital and Emergency Research, Department of Clinical Research, Aalborg University, Aalborg, Denmark
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Mathias J. Holmberg
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
- Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
- Department of Emergency Medicine, Horsens Regional Hospital, Horsens, Denmark
| | - Anne V. Grossestreuer
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Tuyen Yankama
- Department of Pharmacy, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Jean-Pierre Branton
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Michael W. Donnino
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Katherine M. Berg
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
- Division of Pulmonary, Critical Care and Sleep, Beth Israel Deaconess Medical Center, Boston, Massachusetts
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Grand J, Hassager C, Bro-Jeppesen J, Gustafsson F, Møller JE, Boesgaard S, Nielsen N, Kjaergaard J. Impact of Hypothermia on Oxygenation Variables and Metabolism in Survivors of Out-of-Hospital Cardiac Arrest Undergoing Targeted Temperature Management at 33°C Versus 36°C. Ther Hypothermia Temp Manag 2020; 11:170-178. [PMID: 32584698 DOI: 10.1089/ther.2020.0013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Targeted temperature management (TTM) exerts substantial impact on hemodynamic function in out-of-hospital cardiac arrest (OHCA) patients. Whole-body oxygen consumption (VO2) and delivery (DO2) have not previously been investigated in a clinical setting during TTM at different levels of temperature after OHCA. A substudy of 151 patients randomized at a single center in the TTM-trial, where patients were randomly assigned TTM at 33°C (TTM33) or 36°C (TTM36) for 24 hours. We calculated VO2 according to the principle of Fick (VO2 = cardiac output*arteriovenous oxygen content difference). DO2 was calculated as cardiac output*arterial oxygen content. Cardiac output was measured by pulmonary artery catheter with thermodilution. Arteriovenous oxygen content difference was calculated from arterial and mixed venous oxygen saturation and hemoglobin. Oxygen extraction ratio = VO2/DO2. At 24 hours, the VO2 was 169 ± 59 mL O2 per minute in TTM33 and 217 ± 53 mL O2 per minute in TTM36 (p < 0.0001). During 24 hours of TTM, the overall difference was 53 mL O2 minute (95% confidence interval [CI]: 31-74, pgroup < 0.0001). After rewarming at 36 and 48 hours, there was no difference in VO2 between the groups. DO2 was overall 277 mL O2 per minute (95% CI: 175-379, pgroup < 0.0001) higher in the TTM36-group during TTM. Oxygen extraction ratio during TTM was not significantly different between the two groups (2% [95% CI: -0.1 to 5, pgroup = 0.09]). VO2 during the first 36 hours after OHCA correlated significantly with temperature, and VO2 was 19 mL O2 per minute lower per degree reduction in temperature (95% CI: 15-22), p < 0.0001. TTM at 33°C compared to 36°C after OHCA is associated with significantly lower VO2 and DO2, however, oxygen extraction ratio was not significantly different. For each degree lower body temperature, the VO2 fell by 19 mL O2 per minute.
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Affiliation(s)
- Johannes Grand
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Christian Hassager
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - John Bro-Jeppesen
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Finn Gustafsson
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jacob Eifer Møller
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Søren Boesgaard
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Niklas Nielsen
- Department of Anaesthesia and Intensive Care, Helsingborg Hospital, Helsingborg, Sweden
| | - Jesper Kjaergaard
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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Zama Cavicchi F, Iesu E, Franchi F, Nobile L, Annoni F, Vincent JL, Scolletta S, Creteur J, Taccone FS. Low hemoglobin and venous saturation levels are associated with poor neurological outcomes after cardiac arrest. Resuscitation 2020; 153:202-208. [PMID: 32592732 DOI: 10.1016/j.resuscitation.2020.06.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 06/14/2020] [Accepted: 06/16/2020] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Hemoglobin (Hb) is a main determinant of tissue oxygen delivery and anemia could be particularly harmful in post-anoxic brain injury. The aim of this study was to evaluate the association of Hb and venous Hb oxygen saturation (SvO2/ScvO2) with long-term neurological outcome in patients admitted after cardiac arrest (CA). METHODS Analysis of adult CA patients admitted to the Department of Intensive Care of the Erasme University Hospital (Brussels, Belgium) over 9 years. We retrieved all data concerning CA characteristics as well as Hb during the first 48 h since injury as well as the need for red blood cells transfusions (RBCT). Minimum Hb and Hb oxygen saturation values were recorded. Neurological outcome was evaluated 3 months after CA. Unfavorable neurological outcome (UO) was defined as a Cerebral Performance Categories (CPC) score of 3-5. RESULTS We treated 414 patients patients with CA, including 231 (56%) out-of-hospital cardiac arrest (OHCA) and 158 (38%) with an initial shockable rhythm. Median Hb concentration on admission was 12.0 [9.9-13.7] g/dL and the lowest Hb concentration was 10.0 [8.1-11.0] g/dL; 127 patients (31%) received at least one RBCT. Hb oxygen saturation on admission was 67 [59-74]%, while the lowest value was 60 [53-68]%. Low Hb and Hb oxygen saturation values were independently associated with UO; the optimal cut-off to predict UO was <9.9 g/dL and <60%, respectively. CONCLUSIONS Low hemoglobin values and low values of oxygen venous saturation are significantly associated with unfavorable neurological outcome in adult patients resuscitated from cardiac arrest.
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Affiliation(s)
- Federica Zama Cavicchi
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Enrica Iesu
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Federico Franchi
- Department of Emergency Medicine, Surgery and Neurosciences, Intensive Care Unit, Università di Siena, Siena, Italy
| | - Leda Nobile
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Filippo Annoni
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Sabino Scolletta
- Department of Emergency Medicine, Surgery and Neurosciences, Intensive Care Unit, Università di Siena, Siena, Italy
| | - Jacques Creteur
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Fabio Silvio Taccone
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium.
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12
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Anile A, Ferrario S, Campanello L, Orban MA, Castiglione G. Renal resistive index: a new reversible tool for the early diagnosis and evaluation of organ perfusion in critically ill patients: a case report. Ultrasound J 2019; 11:23. [PMID: 31598787 PMCID: PMC6785600 DOI: 10.1186/s13089-019-0138-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 09/06/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND We reported a case of early detection of peripheral hypoperfusion trough the evaluation of a new index in intensive care: Renal Doppler Resistive Index (RRI). CASE PRESENTATION We admitted a 76-year-old man who underwent ileostomy and hernioplasty because of an intestinal occlusion due to obstructive strangulated right inguinal hernia. The post-operative period was characterised by hemodynamic instability and he needed an invasive hemodynamic monitoring, administration of vasopressors and continuous renal replacement therapy (CRRT). Then, hemodynamic stability was obtained and vasopressors interrupted. RRI was lower than 0.7. In the eleventh post-operative day, despite stable macrocirculatory parameters, we found increased values of RRI. An abdomen ultrasound first and then a CT scan revealed the presence of bleeding from the previous ileostomy. Hence, the patient immediately underwent another surgical operation. CONCLUSIONS RRI modification appears to be more precocious than any other hemodynamic, microcirculatory and metabolic parameter routinely used. RRI has been widely used to assess renal function in critically ill patients; now, we presume that RRI could represent a common and useful tool to manage target therapy in critical condition.
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Affiliation(s)
- Antonio Anile
- Intensive Care Unit, Ospedale Vittorio Emanuele, AOU Policlinico–Vittorio Emanuele, Catania, Italy
| | - Silvia Ferrario
- Section of Nephrology, Department of Clinical and Experimental Medicine, Policlinico Universitario, University of Catania, Catania, Italy
| | - Lorena Campanello
- School of Anaesthesia and Intensive Care, University Hospital “G. Rodolico”, University of Catania, Catania, Italy
| | - Maria Antonietta Orban
- School of Anaesthesia and Intensive Care, University Hospital “G. Rodolico”, University of Catania, Catania, Italy
| | - Giacomo Castiglione
- Intensive Care Unit, Ospedale Vittorio Emanuele, AOU Policlinico–Vittorio Emanuele, Catania, Italy
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14
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Walton RAL, Hansen BD. Venous oxygen saturation in critical illness. J Vet Emerg Crit Care (San Antonio) 2018; 28:387-397. [PMID: 30071148 DOI: 10.1111/vec.12749] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 01/03/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To review clinically relevant features of systemic oxygen delivery and consumption and the technique and use of venous oxygenation monitoring in human and veterinary medicine. DATA SOURCES Veterinary and human peer-reviewed medical literature including scientific reviews, clinical and laboratory research articles, and authors' clinical research experience. SUMMARY Measurement of venous hemoglobin oxygen saturation (venous oxygenation) provides insight into the balance between oxygen supply and tissue demand. In people, measurement of venous oxygen saturation can reveal decompensation that is missed by physical examination and other routinely monitored parameters. Therefore, measurement of mixed or central venous oxygenation measurement may help guide therapy and predict outcome of critically ill patients. In dogs, low central venous oxygen saturation has been associated with impaired cardiopulmonary function and poor outcome in several small studies of experimental shock or severe clinical illness, suggesting that monitoring this variable may assist the treatment of severe illness in this species as well. CONCLUSION Venous oxygenation reflects systemic oxygenation status and can be used to guide treatment and estimate prognosis in critically ill patients. Measurement of venous oxygenation in veterinary patients is feasible and is a potentially valuable tool in the management of patients with severe disease. This review is intended to increase the understanding and awareness of the potential role of venous oxygen measurement in veterinary patients.
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Affiliation(s)
- Rebecca A L Walton
- Department of Clinical Sciences, North Carolina State University, College of Veterinary Medicine, Raleigh, NC, 27607
| | - Bernie D Hansen
- Department of Clinical Sciences, North Carolina State University, College of Veterinary Medicine, Raleigh, NC, 27607
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15
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Berg KM, Donnino MW, Callaway C. Looking for CO 2: Exploring the Novel Finding of Low Respiratory Quotient After Cardiac Arrest. J Am Heart Assoc 2018; 7:JAHA.118.009500. [PMID: 29959139 PMCID: PMC6064895 DOI: 10.1161/jaha.118.009500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Katherine M Berg
- Division of Pulmonary, Critical Care and Sleep, Beth Israel Deaconess Medical Center, Boston, MA
| | - Michael W Donnino
- Division of Pulmonary, Critical Care and Sleep, Beth Israel Deaconess Medical Center, Boston, MA.,Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA
| | - Clifton Callaway
- Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, PA
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Abstract
PURPOSE OF REVIEW Protocolized care for early shock resuscitation (PCESR) has been intensely examined over the last decade. The purpose is to review the pathophysiologic basis, historical origin, clinical applications, components and outcome implications of PCESR. RECENT FINDINGS PCESR is a multifaceted systems-based approach that includes early detection of high-risk patients and interventions to rapidly reverse hemodynamic perturbations that result in global or regional tissue hypoxia. It has been applied to perioperative surgery, trauma, cardiology (heart failure and acute myocardial infarction), pulmonary embolus, cardiac arrest, undifferentiated shock, postoperative cardiac surgery and pediatric septic shock. When this approach is used for adult septic shock, in particular, it is associated with a mortality reduction from 46.5 to less than 30% over the last 2 decades. Challenges to these findings are seen when repeated trials contain enrollment, diagnostic and therapeutic methodological differences. SUMMARY PCESR is more than a hemodynamic optimization procedure. It also provides an educational framework for the less experienced and objective recognition of clinical improvement or deterioration. It further minimizes practices' variation and provides objective measures that can be audited, evaluated and amendable to continuous quality improvement. As a result, morbidity and mortality are improved.
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17
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Preliminary observations in systemic oxygen consumption during targeted temperature management after cardiac arrest. Resuscitation 2018; 127:89-94. [PMID: 29626611 DOI: 10.1016/j.resuscitation.2018.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 03/13/2018] [Accepted: 04/02/2018] [Indexed: 12/27/2022]
Abstract
AIM Limited data suggests low oxygen consumption (VO2), driven by mitochondrial injury, is associated with mortality after cardiac arrest. Due to the challenges of measurement in the critically ill, post-arrest metabolism remains poorly characterized. We monitored VO2, carbon dioxide production (VCO2) and the respiratory quotient (RQ) in post-arrest patients and explored associations with outcome. METHODS Using a gas exchange monitor, we measured continuous VO2 and VCO2 in post- arrest patients treated with targeted temperature management. We used area under the curve and medians over time to evaluate the association between VO2, VCO2, RQ and the VO2:lactate ratio with survival. RESULTS In 17 patients, VO2 in the first 12 h after return of spontaneous circulation (ROSC) was associated with survival (median in survivors 3.35 mL/kg/min [2.98,3.88] vs. non-survivors 2.61 mL/kg/min [2.21,2.94], p = .039). This did not persist over 24 h. The VO2:lactate ratio was associated with survival (median in survivors 1.4 [IQR: 1.1,1.7] vs. non-survivors 0.8 [IQR: 0.6,1.2] p < 0.001). Median RQ was 0.66 (IQR 0.63,0.70) and 71% of RQ measurements were <0.7. Patients with initial RQ < 0.7 had 17% survival versus 64% with initial RQ > 0.7 (p = .131). VCO2 was not associated with survival. CONCLUSIONS There was a significant association between VO2 and mortality in the first 12 h after ROSC, but not over 24 h. Lower VO2: lactate ratio was associated with mortality. A large percentage of patients had RQs below physiologic norms. Further research is needed to explore whether these parameters could have true prognostic value or be a potential treatment target.
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18
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Effect of initial lactate level on short-term survival in patients with out-of-hospital cardiac arrest. Turk J Emerg Med 2017; 17:123-127. [PMID: 29464213 PMCID: PMC5812899 DOI: 10.1016/j.tjem.2017.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 05/02/2017] [Accepted: 05/08/2017] [Indexed: 01/07/2023] Open
Abstract
Purpose This study evaluated whether serum lactate levels (SLL) at admission in patients with cardiac arrest (CA) can predict successful return of spontaneous circulation (ROSC) or short-term survival, especially within the first 24 h. Materials and methods This prospective, observational study was conducted in the emergency department (ED) of a training and research hospital from April 2015 through February 2016. It included all patients older than 18 years who presented to the ED during the study period with non-traumatic out-of-hospital cardiac arrest (OHCA). The study measured two outcomes: whether ROSC was achieved and whether short-term survival was achieved. ROSC was defined as the presence of spontaneous circulation for the first hour after cardiopulmonary resuscitation (CPR). Survival was defined as having survived for a minimum of 24 h after ROSC. Results The study included 140 patients who were admitted to the ED with OHCA. ROSC was achieved in 55 patients (39.3%), and survival for 24 h following CA was achieved in 42 patients (30%). The mean SLL in the ROSC (+) and ROSC (-) groups were 9.1 ± 3.2 mmol/L and 9.8 ± 2.9 mmol/L, respectively. The mean SLL in the survivor and non-survivor groups were 8.6 ± 2.9 mmol/L and 10 ± 3.1 mmol/L, respectively. These differences were not statistically significant (p = 0.1). A multivariate regression model assessing the factors that predicted both ROSC and 24-h survival showed the odds ratio (OR) of initial SLL was 1.3 (95% CI: 1.05–1.6) and 1.1 (95% CI: 0.9–1.3), respectively. Conclusions This study showed that in OHCA patients, SLL on admission was not associated with increased ROSC achievement or 24-h survival.
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19
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Near-infrared spectroscopy during cardiopulmonary resuscitation and after restoration of spontaneous circulation. Curr Opin Crit Care 2016; 22:191-8. [DOI: 10.1097/mcc.0000000000000301] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Andersen LW, Holmberg MJ, Berg KM, Chase M, Cocchi MN, Sulmonte C, Balkema J, MacDonald M, Montissol S, Senthilnathan V, Liu D, Khabbaz K, Lerner A, Novack V, Liu X, Donnino MW. Thiamine as an adjunctive therapy in cardiac surgery: a randomized, double-blind, placebo-controlled, phase II trial. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2016; 20:92. [PMID: 27044557 PMCID: PMC4820988 DOI: 10.1186/s13054-016-1245-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 02/16/2016] [Indexed: 12/11/2022]
Abstract
Background Thiamine is a vitamin that is essential for adequate aerobic metabolism. The objective of this study was to determine if thiamine administration prior to coronary artery bypass grafting would decrease post-operative lactate levels as a measure of increased aerobic metabolism. Methods We performed a randomized, double-blind, placebo-controlled trial of patients undergoing coronary artery bypass grafting. Patients were randomized to receive either intravenous thiamine (200 mg) or placebo both immediately before and again after the surgery. Our primary endpoint was post-operative lactate levels. Additional endpoints included pyruvate dehydrogenase activity, global and cellular oxygen consumption, post-operative complications, and hospital and intensive care unit length of stay. Results Sixty-four patients were included. Thiamine levels were significantly higher in the thiamine group as compared to the placebo group immediately after surgery (1200 [683, 1200] nmol/L vs. 9 [8, 13] nmol/L, p < 0.001). There was no difference between the groups in the primary endpoint of lactate levels immediately after the surgery (2.0 [1.5, 2.6] mmol/L vs. 2.0 [1.7, 2.4], p = 0.75). Relative pyruvate dehydrogenase activity was lower immediately after the surgery in the thiamine group as compared to the placebo group (15 % [11, 37] vs. 28 % [15, 84], p = 0.02). Patients receiving thiamine had higher post-operative global oxygen consumption 1 hour after the surgery (difference: 0.37 mL/min/kg [95 % CI: 0.03, 0.71], p = 0.03) as well as cellular oxygen consumption. We found no differences in clinical outcomes. Conclusions There were no differences in post-operative lactate levels or clinical outcomes between patients receiving thiamine or placebo. Post-operative oxygen consumption was significantly increased among patients receiving thiamine. Trial registration clinicaltrials.gov NCT02322892, December 14, 2014 Electronic supplementary material The online version of this article (doi:10.1186/s13054-016-1245-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lars W Andersen
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA. .,Department of Anesthesiology, Aarhus University Hospital, Nørrebrogade 44, 8000, Aarhus C, Denmark. .,Research Center for Emergency Medicine, Aarhus University Hospital, Nørrebrogade 44, 8000, Aarhus C, Denmark.
| | - Mathias J Holmberg
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA.,Research Center for Emergency Medicine, Aarhus University Hospital, Nørrebrogade 44, 8000, Aarhus C, Denmark
| | - Katherine M Berg
- Department of Medicine, Division of Pulmonary and Critical Care, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Maureen Chase
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Michael N Cocchi
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA.,Department of Anesthesia Critical Care, Division of Critical Care, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Christopher Sulmonte
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Julia Balkema
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Mary MacDonald
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Sophia Montissol
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Venkatachalam Senthilnathan
- Department of Surgery, Division of Cardiothoracic Surgery, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - David Liu
- Department of Surgery, Division of Cardiothoracic Surgery, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Kamal Khabbaz
- Department of Surgery, Division of Cardiothoracic Surgery, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Adam Lerner
- Department of Anesthesia, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Victor Novack
- Clinical Research Center, Soroka University Medical Center, POB 151, Beer-Sheva, 84965, Israel.,Faculty of Health Sciences, Ben-Gurion University, POB 151, Beer-Sheva, 84965, Israel
| | - Xiaowen Liu
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Michael W Donnino
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA.,Department of Medicine, Division of Pulmonary and Critical Care, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, USA
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Effects of Oxygen Concentrations on Postresuscitation Myocardial Oxidative Stress and Myocardial Function in a Rat Model of Cardiopulmonary Resuscitation. Crit Care Med 2016; 43:e560-6. [PMID: 26491859 DOI: 10.1097/ccm.0000000000001297] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Lipid peroxidation induced by free-radical species plays a prominent role in myocardial injury following ischemia and reperfusion. However, there is a lack of data in different oxygen concentrations on myocardial lipid peroxidation during the early phase of reperfusion. In this study, we investigated whether ventilation with medium or normal concentration of oxygen would decrease the severity of myocardial lipid peroxidation and postresuscitation myocardial dysfunction. DESIGN Prospective, randomized, controlled experimental study. SETTING University-affiliated animal research institution. SUBJECTS Sixty-three healthy male Sprague-Dawley rats. INTERVENTIONS Animals were randomized into three groups: 1) 100% group, 2) 50% group, and 3) 21% group. Ventricular fibrillation was induced and untreated for 8 minutes, and defibrillation was attempted after 8 minutes of cardiopulmonary resuscitation. Ventilation with 100%, 50%, or 21% oxygen was initiated in all groups during cardiopulmonary resuscitation and 1 hour following the return of spontaneous circulation. Normoxic ventilation was maintained thereafter. MEASUREMENTS AND MAIN RESULTS Myocardial function, including ejection fraction and myocardial performance index, were measured at baseline, 4, or 72 hours after resuscitation. Blood samples were drawn at baseline, 15 minutes, 1, 4, or 72 hours after resuscitation for the measurements of blood gas or biomarkers. Significantly better myocardial function and longer duration of survival were observed in the 50% group. Compared with the 21% and 100% groups, a mild hyperoxia and greater oxygen extraction with lower 8-iso-prostaglandin F2α were observed in the 50% group. Pearson correlation analysis confirmed that 8-iso-prostaglandin F2α was positively correlated with myocardial performance index at 4 hours postresuscitation. CONCLUSIONS In a rat model of cardiac arrest and resuscitation, ventilation with 50% inspired oxygen during early postischemic reperfusion phase contributed to a decreased lipid peroxidation and a better myocardial function and duration of survival.
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Riveiro DFM, Oliveira VMD, Braunner JS, Vieira SRR. Evaluation of Serum Lactate, Central Venous Saturation, and Venous-Arterial Carbon Dioxide Difference in the Prediction of Mortality in Postcardiac Arrest Syndrome. J Intensive Care Med 2015; 31:544-52. [PMID: 26112759 DOI: 10.1177/0885066615592865] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 06/03/2015] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Tissue hypoperfusion and hypoxia markers predict mortality in critically ill patients. This study evaluates the ability of serum lactate, central venous oxygen saturation (Scvo 2), and venous-arterial carbon dioxide difference (GapCo 2) to predict mortality in patients with postcardiac arrest (post-CA) syndrome. METHODS A prospective observational study of patients with post-CA in a tertiary teaching hospital. Serial assessments of lactate, lactate clearance (Clac), GapCo 2, and Scvo 2 in the first 72 hours post-CA were analyzed. Adults (≥18 years) patients resuscitated from CA were included. The primary end point was 28-day mortality and secondary end points were 24- and 72-hour mortality. RESULTS A total of 54 patients were recruited, 33 (61,1%) of 54 were men, with a 28-day mortality of 75.9%. Cardiac arrest occurred in-hospital in 84.6% of survivors and 97.5% of nonsurvivors. Lactate and Clac were significantly associated with mortality at 28 days, yielding an area under the receiver-operating characteristic curve of 0.797 (lactate 6 hours) and 0.717 (Clac 6 hours) with a positive predictive value of 96% for lactate 6 hours (> 2.5 mmol/L) and 89.5% for Clac 6 hours (<50%). Survival analysis confirmed the difference between the groups from the 24th hour post-CA. Considering mortality at 24 hours, lactate, Clac, and Scvo 2 (immediately post-CA, 6 and 18 hours) were different between the groups. In mortality at 72 hours, lactate, Clac, Scvo 2 (48 hours), and GapCo 2 (36 and 48 hours) were associated with mortality. CONCLUSION In post-CA syndrome, serum lactate and Clac were consistently able to predict mortality.
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Affiliation(s)
| | - Vanessa Martins de Oliveira
- Department of Intensive Care, Hospital Nossa Senhora da Conceição, Grupo Hospitalar Conceição, Porto Alegre-RS, Brazil Department of Intensive Care, Hospital das Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre-RS, Brazil
| | - Janete Salles Braunner
- Department of Intensive Care, Hospital das Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre-RS, Brazil
| | - Silvia Regina Rios Vieira
- Department of Intensive Care, Hospital das Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre-RS, Brazil
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Oxygen saturation measurements of the retinal vasculature in treated asymmetrical primary open-angle glaucoma using hyperspectral imaging. Eye (Lond) 2014; 28:1190-200. [PMID: 25060843 DOI: 10.1038/eye.2014.169] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2013] [Accepted: 04/28/2014] [Indexed: 12/13/2022] Open
Abstract
PURPOSE To determine whether there are differences in retinal vascular oxygen saturation measurements, estimated using a hyperspectral fundus camera, between normal eyes and treated eyes of subjects with asymmetrical primary open-angle glaucoma (POAG). METHODS A noninvasive hyperspectral fundus camera was used to acquire spectral images of the retina at wavelengths between 556 and 650 nm in 2-nm increments. In total, 14 normal eyes and both eyes of 11 treated POAG subjects were imaged and analyzed using algorithms that use the spectral variation of the optical densities of blood vessels to estimate the oxygen saturation of blood within the retinal vasculature. In the treated POAG group, each of the eyes were categorized, based on the mean deviation of the Humphrey visual-field analyzer result, as either more-advanced or less-advanced, glaucomatous eyes. Unpaired t-tests (two-tailed) with Welch's correction were used to compare the mean oxygen saturation between the normal subjects and the treated POAG subgroups. RESULTS In less-advanced and more-advanced-treated POAG eyes, mean retinal venular oxygen saturations (48.2±21.6% and 42.6±18.8%, respectively) were significantly higher than in normal eyes (27.9±9.9%; P=0.03 and 0.01, respectively). Arteriolar oxygen saturation was not significantly different between normal eyes and treated POAG eyes. CONCLUSIONS The increased oxygen saturation of the retinal venules in advanced-treated POAG eyes may indicate reduced metabolic consumption of oxygen in the inner retinal tissues.
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Koning NJ, Simon LE, Asfar P, Baufreton C, Boer C. Systemic microvascular shunting through hyperdynamic capillaries after acute physiological disturbances following cardiopulmonary bypass. Am J Physiol Heart Circ Physiol 2014; 307:H967-75. [PMID: 25063797 DOI: 10.1152/ajpheart.00397.2014] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Previously we showed that cardiopulmonary bypass (CPB) during cardiac surgery is associated with reduced sublingual microcirculatory perfusion and oxygenation. It has been suggested that impaired microcirculatory perfusion may be paralleled by increased heterogeneity of flow in the microvascular bed, possibly leading to arteriovenous shunting. Here we investigated our hypothesis that acute hemodynamic disturbances during extracorporeal circulation indeed lead to microcirculatory heterogeneity with hyperdynamic capillary perfusion and reduced systemic oxygen extraction. In this single-center prospective observational study, patients undergoing cardiac surgery with (n = 18) or without (n = 13) CPB were included. Perioperative microcirculatory perfusion was assessed sublingually with sidestream darkfield imaging, and recordings were quantified for microcirculatory heterogeneity and hyperdynamic capillary perfusion. The relationship with hemodynamic and oxygenation parameters was analyzed. Microcirculatory heterogeneity index increased substantially after onset of CPB [0.5 (0.0-0.9) to 1.0 (0.3-1.3); P = 0.031] but not during off-pump surgery. Median capillary red blood cell (RBC) velocity increased intraoperatively in the CPB group only [1,600 (913-2,500 μm/s) vs. 380 (190-480 μm/s); P < 0.001], with 31% of capillaries supporting high RBC velocities (>2,000 μm/s). Hyperdynamic microcirculatory perfusion was associated with reduced arteriovenous oxygen difference and systemic oxygen consumption during and after CPB. The current study provides the first direct human evidence for a microvascular shunting phenomenon through hyperdynamic capillaries following acute physiological disturbances after onset of CPB. The hypothesis of impaired systemic oxygen offloading caused by hyperdynamic capillaries was supported by reduced blood arteriovenous oxygen difference and low systemic oxygen extraction associated with CPB.
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Affiliation(s)
- Nick J Koning
- Department of Anesthesiology. Institute for Cardiovascular Research, VU University Medical Center, Amsterdam, the Netherlands; Departments of Integrated Neurovascular Biology, Institut National de la Santé et de la Recherche Médicale U1083, Centre National de la Recherche Scientifique UMR 6214;
| | - Lotte E Simon
- Department of Anesthesiology. Institute for Cardiovascular Research, VU University Medical Center, Amsterdam, the Netherlands
| | - Pierre Asfar
- Departments of Integrated Neurovascular Biology, Institut National de la Santé et de la Recherche Médicale U1083, Centre National de la Recherche Scientifique UMR 6214; Réanimation Médicale et Médicine Hyperbare, LUNAM University, Université d'Angers, Angers, France
| | - Christophe Baufreton
- Cardiovascular Surgery, LUNAM University, Université d'Angers, Angers, France; and
| | - Christa Boer
- Department of Anesthesiology. Institute for Cardiovascular Research, VU University Medical Center, Amsterdam, the Netherlands
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Ahn A, Yang J, Inigo-Santiago L, Parnia S. A feasibility study of cerebral oximetry monitoring during the post-resuscitation period in comatose patients following cardiac arrest. Resuscitation 2014; 85:522-6. [DOI: 10.1016/j.resuscitation.2013.12.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 11/05/2013] [Accepted: 12/09/2013] [Indexed: 10/25/2022]
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Mortality after in-hospital cardiopulmonary resuscitation: multicenter analysis in Korea. J Crit Care 2013; 28:942-6. [PMID: 23937967 DOI: 10.1016/j.jcrc.2013.07.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 06/03/2013] [Accepted: 07/08/2013] [Indexed: 01/31/2023]
Abstract
PURPOSE The purpose of this study is to evaluate factors associated with the mortality of patients admitted to intensive care units (ICUs) after in-hospital cardiopulmonary resuscitation (CPR) and the impact of a hospital rapid response system (RRS) on patient mortality in Korea. MATERIALS AND METHODS A prospective multicenter cohort study was done in 22 ICUs of 15 centers from July 1, 2010, to January 31, 2011. We only enrolled patients admitted to ICUs after in-hospital CPR and divided eligible patients into 2 groups-survivors and nonsurvivors. RESULTS Among 4617 patients, 150 patients were admitted post-CPR, 76 died, and 74 survived. At 24 hours, the Sequential Organ Failure Assessment score, Simplified Acute Physiology Score II, and the best Glasgow Coma Scale were significantly lower in the nonsurvivors than in the survivors. In multivariate analysis, the Simplified Acute Physiology Score II and presence of lower respiratory infection were both independently associated with mortality. At the first hour after admission, lowest serum potassium and highest heart rate were associated with mortality. At 24 hours after admission, lowest mean arterial pressure, HCO3 level, and venous oxygen saturation level; highest heart rate; and use of vasoactive drugs were associated with mortality. The mortality of patients in hospitals with an RRS was not significantly different from that of hospitals without an RRS. CONCLUSION Various physiologic and laboratory parameters were associated with the mortality of post-CPR ICU admitted patients, and the presence of an RRS did not reduce mortality of these patients in our study.
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Gaieski DF, Grossestreuer AV, Abella BS. Reply to Letter: Association of serum lactate and survival outcomes after cardiac arrest. Resuscitation 2013; 84:e90-1. [DOI: 10.1016/j.resuscitation.2013.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 04/05/2013] [Indexed: 11/26/2022]
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Skhirtladze-Dworschak K, Dworschak M. Cerebral oximetry and cardiac arrest. Semin Cardiothorac Vasc Anesth 2013; 17:269-75. [PMID: 23782549 DOI: 10.1177/1089253213492861] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cerebral oximetry is a Food and Drug Administration-approved technology that allows monitoring of brain oxygen saturation in accessible superficial brain cortex regions, which are amongst the most vulnerable in regard to ischemic or hypoxic injury. Since most oxygen in the area of interest is located in the venous compartment, the determined regional brain oxygen saturation approximately reflects the local balance between oxygen delivery and oxygen consumption. Major systemic alterations in blood oxygen content and oxygen delivery will be accompanied by corresponding changes in regional brain saturation. This systematic review, which is based on a Medline search, focuses on the characteristic changes in regional cerebral oxygen saturation that occur, when global oxygen supply to the brain ceases. It further highlights the potential application of cerebral oximetry in the management of cardiac arrest victims, the predictability of clinical outcome after global cerebral ischemia, and it also indicates possible potentials for the management of cerebral reperfusion after having instituted return of spontaneous circulation.
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Central venous oxygen saturation under non-protocolized resuscitation is not related to survival in severe sepsis or septic shock. Shock 2013; 38:584-91. [PMID: 23143064 DOI: 10.1097/shk.0b013e318274c674] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Protocolized hemodynamic resuscitation in severe sepsis or septic shock is not universally applied in all emergency departments and general hospital wards around the world. It is unknown whether ScvO2 levels are associated with the clinical outcome of severe sepsis or septic shock under nonprotocolized resuscitation. In this prospective study, we enrolled 124 noncirrhotic patients who were admitted to intensive care units for severe sepsis or septic shock. The average Acute Physiology and Chronic Health Evaluation II score was 25.3 (SD, 7.6). According to ScvO2 levels after initial resuscitation before intensive care unit admission, patients were divided into high (ScvO2 ≥ 70%, n = 63) and low (ScvO2 < 70%, n = 61) ScvO2 groups. Compared with high ScvO2 groups, low ScvO2 groups showed no significant differences in 28-day mortality (25.4% vs. 24.6%; P = 0.943) or hospital mortality (30.2% vs. 31.1%; P = 0.794). Multivariate logistic regression models showed that low mean arterial pressure (hazard ratio, 0.967; 95% confidence interval, 0.940-0.994; P = 0.019) and high central venous pressure (hazard ratio, 1.150; 95% confidence interval, 1.057-1.251; P = 0.001) after initial resuscitation were associated with higher 28-day mortality. On the contrary, ScvO2 levels after resuscitation were not related to 28-day or hospital mortality. In conclusion, our results showed that mean arterial pressure and central venous pressure were still the most important hemodynamic variables in initial hemodynamic resuscitation. Low postresuscitation ScvO2 was not associated with a worse outcome. It is possible that ScvO2 less than 70% might not necessarily be associated with tissue hypoxia, and critical ScvO2 levels require to be determined by further studies.
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Goldberg SA, Metzger JC, Pepe PE. Year in review 2011: Critical Care--Out-of-hospital cardiac arrest and trauma. Crit Care 2012; 16:247. [PMID: 23249434 PMCID: PMC3672581 DOI: 10.1186/cc11832] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
In 2011, numerous studies were published in Critical Care focusing on out-of-hospital cardiac arrest, cardiopulmonary resuscitation, trauma, and some related airway, respiratory, and response time factors. In this review, we summarize several of these studies, including those that brought forth advances in therapies for the post-resuscitative period. These advances involved hypothesis-generating concepts in therapeutic hypothermia as well as the impact of early percutaneous coronary artery interventions and the potential utility of extracorporeal life support after cardiac arrest. There were also articles pertaining to the importance of timing in prehospital airway management, the outcome impact of hyperoxia, and the timing of end-tidal carbon dioxide measurements to predict futility in cardiac arrest resuscitation. In other articles, additional perspectives were provided on the classic correlations between emergency medical service response intervals and outcomes.
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Affiliation(s)
- Scott A Goldberg
- Emergency Medicine Administration, University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, MC 8579, Dallas, TX 75390-8579, USA
| | - Jeffery C Metzger
- Emergency Medicine Administration, University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, MC 8579, Dallas, TX 75390-8579, USA
| | - Paul E Pepe
- Emergency Medicine Administration, University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, MC 8579, Dallas, TX 75390-8579, USA
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Comparison of shock-first strategy and cardiopulmonary resuscitation-first strategy in a porcine model of prolonged cardiac arrest. Resuscitation 2012; 84:233-8. [PMID: 22771871 DOI: 10.1016/j.resuscitation.2012.06.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2012] [Accepted: 06/29/2012] [Indexed: 11/21/2022]
Abstract
OBJECTIVE The choice of a shock-first or a cardiopulmonary resuscitation (CPR)-first strategy in the treatment of prolonged cardiac arrest (CA) is still controversial. The purpose of this study was to compare the effects of these strategies on oxygen metabolism and resuscitation outcomes in a porcine model of 8min CA. METHODS Ventricular fibrillation (VF) was electrically induced. After 8min of untreated VF, 24 male inbred Wu-Zhi-Shan miniature pigs were randomized to receive either defibrillation first (ID group) or chest compression first (IC group). In the ID group, a shock was delivered immediately. If the defibrillation attempt failed to attain restoration of spontaneous circulation (ROSC), manual chest compressions were rapidly initiated at a rate of 100compressionsmin(-1), and the compression-to-ventilation ratio was 30:2. If VF persisted after five cycles of CPR, a second defibrillation attempt was made. In the IC group, chest compressions were delivered first, followed by a shock. RESULTS Hemodynamic variables, the VF waveform and blood gas analysis outcomes were recorded. Oxygen metabolism parameters and the amplitude spectrum area (AMSA) of the VF waveform were computed. There were no significant differences in the rate of ROSC and 24h survival between two groups. The ID group had lower lactic acid levels, higher cardiac output, better oxygen consumption and better oxygen extraction ratio at 4 and 6h after ROSC than the IC group. CONCLUSIONS In a porcine model of prolonged CA, the choice of a shock-first or CPR-first strategy did not affect the rate of ROSC and 24h survival, but the shock-first strategy might result in better hemodynamic status and better oxygen metabolism than the CPR-first strategy at the first 6h after ROSC.
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Gaieski DF, Neumar RW, Fuchs B, Abella BS, Kolansky D, Delfin G, Leary M, Goyal M. Haemodynamic management strategies are not explicitly defined in the majority of therapeutic hypothermia implementation studies. Resuscitation 2012; 83:835-9. [DOI: 10.1016/j.resuscitation.2011.12.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 11/11/2011] [Accepted: 12/13/2011] [Indexed: 10/14/2022]
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Aldhoon B, Melenovský V, Kettner J, Kautzner J. Clinical predictors of outcome in survivors of out-of-hospital cardiac arrest treated with hypothermia. COR ET VASA 2012. [DOI: 10.1016/j.crvasa.2012.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Boller M, Boller EM, Oodegard S, Otto CM. Small animal cardiopulmonary resuscitation requires a continuum of care: proposal for a chain of survival for veterinary patients. J Am Vet Med Assoc 2012; 240:540-54. [DOI: 10.2460/javma.240.5.540] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Reynolds JC, Lawner BJ. Management of the post-cardiac arrest syndrome. J Emerg Med 2012; 42:440-9. [PMID: 22281034 DOI: 10.1016/j.jemermed.2011.09.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 05/23/2011] [Accepted: 09/27/2011] [Indexed: 11/18/2022]
Abstract
BACKGROUND Recent advances in resuscitation science have revolutionized care of the cardiac arrest patient. Dramatic departures from time-honored advanced cardiac life support therapies, such as cardiocerebral resuscitation and bundled post-arrest care, have given rise to a new paradigm of resuscitation practices, which has boosted the rate of neurologically intact survival. OBJECTIVES This article reviews the pathophysiology of the post-cardiac arrest syndrome, the collective pathophysiology after return of spontaneous circulation, and presents management pearls specifically for the emergency physician. This growing area of scientific inquiry must be managed appropriately to sustain improved outcomes. DISCUSSION The emergency physician must understand this pathophysiology, manage resuscitated patients according to the latest evidence, and coordinate with appropriate inpatient resources. CONCLUSION The new approach to cardiac arrest care is predicated on a chain of survival that spans the spectrum of care from the prehospital arena through the emergency, intensive, and inpatient settings. The emergency physician is a crucial link in this chain.
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Affiliation(s)
- Joshua C Reynolds
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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Abstract
Caring in the emergency department for the patient with return of spontaneous circulation after cardiac arrest is challenging. A coordinated and systematic approach to post-cardiac arrest care can improve the mortality and the chance of meaningful neurologic recovery. By achieving appropriate targets for oxygenation, ventilation, and hemodynamic parameters, along with initiating therapeutic hypothermia and arranging early percutaneous coronary intervention, the emergency physician can have the most significant impact on patients who have just been revived from death.
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Lakshminrusimha S, Steinhorn RH, Wedgwood S, Savorgnan F, Nair J, Mathew B, Gugino SF, Russell JA, Swartz DD. Pulmonary hemodynamics and vascular reactivity in asphyxiated term lambs resuscitated with 21 and 100% oxygen. J Appl Physiol (1985) 2011; 111:1441-7. [PMID: 21799125 DOI: 10.1152/japplphysiol.00711.2011] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
An increase in oxygen tension is an important factor in decreasing pulmonary vascular resistance (PVR) at birth. Birth asphyxia results in acidosis and increased PVR. We determined the effect of resuscitation with 21 vs. 100% O(2) on pulmonary hemodynamics, pulmonary arterial (PA) reactivity, and oxidant stress in a lamb model of in utero asphyxia. Term fetal lambs were acutely asphyxiated by intrauterine umbilical cord occlusion for 10 min resulting in acidosis (pH 6.96 ± 0.05 and Pco(2) 103 ± 5 Torr), bradycardia, systemic hypotension, and increased PVR. Lambs were treated with 30 min of resuscitation with 21% or 100% O(2) (n = 6 each). Pa(O(2)) was significantly elevated with 100% O(2) resuscitation compared with 21% O(2) (430 ± 38 vs. 64 ± 8 Torr), but changes in pH and Pa(CO(2)) were similar. The 100% O(2) induced greater increase in pulmonary blood flow and decrease in PVR at 1 min of life, but subsequent values were similar to 21% O(2) group between 2 and 30 min of life. Oxygen uptake from the lung and systemic oxygen extraction was similar between the two groups. Pulmonary arteries showed increased staining for superoxide anions and increased contractility to norepinephrine following resuscitation with 100% O(2). The increased PA contractility induced by 100% O(2) was reversed by scavenging superoxide anions with superoxide dismutase and catalase. We conclude that resuscitation of asphyxiated lambs with 100% O(2) increases Pa(O(2)) but does not improve lung oxygen uptake, decrease PVR at 30 min, or increase systemic oxygen extraction ratios. Furthermore, 100% O(2) also induces oxidative stress and increases PA contractility. These findings support the new neonatal resuscitation guidelines recommending 21% O(2) for initial resuscitation of asphyxiated neonates.
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Kakavas S, Chalkias A, Xanthos T. Vasoactive support in the optimization of post-cardiac arrest hemodynamic status: from pharmacology to clinical practice. Eur J Pharmacol 2011; 667:32-40. [PMID: 21693117 DOI: 10.1016/j.ejphar.2011.06.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 05/30/2011] [Accepted: 06/07/2011] [Indexed: 10/18/2022]
Abstract
As a critical component of post-resuscitation care, prompt optimization of hemodynamic status by means of targeted interventions is vital in order to maximize the likelihood of good outcome. Vasoactive agents play an essential role in the supportive care of post cardiac arrest patients. The administration of these agents is associated with serious side-effects and therefore they should be used in the minimal dose necessary to achieve low-normal mean arterial pressure and adequate systematic perfusion. Careful and frequent serial evaluation of the patient is important primarily to assess volume status and adequacy of circulatory support. Continuous monitoring of blood pressure and laboratory parameters is essential both to accurately titrate therapy and because inotropes and vasopressors have the potential to induce life-threatening side-effects. The clinical efficacy of inotropes and vasopressors has been largely investigated through examination of their impact on hemodynamic end points, and clinical practice has been driven in part by expert opinion, extrapolation from animal studies, and physician preference. Clearly these agents should all be considered as supportive measures to stabilize the patient prior to some form of definitive therapy.
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Affiliation(s)
- Sotirios Kakavas
- University of Athens, Medical School, Department of Anatomy, Greece
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Abstract
OBJECTIVE To investigate the effects of cardiac arrest on cerebral perfusion and oxidative stress during hyperglycemia and normoglycemia. DESIGN Experimental animal model. SETTING University laboratory. SUBJECTS Triple-breed pigs (weight, 22-27 kg). INTERVENTIONS Thirty-three pigs were randomized and clamped at blood glucose levels of 8.5-10 mM (high) or 4-5.5 mM (normal) and thereafter subjected to alternating current-induced 12-min cardiac arrest followed by 8 mins of cardiopulmonary resuscitation and direct-current shock to restore spontaneous circulation. MEASUREMENTS AND MAIN RESULTS Hemodynamics, regional near-infrared light spectroscopy, regional venous Hbo2, and biochemical markers (Protein S100beta, troponin I, F2-isoprostanes reflecting oxidative stress and inflammation) were monitored and/or sampled throughout an observation period of 4 hrs. No significant differences were seen in hemodynamics or biochemical profile. The cerebral oxygenation by means of regional near-infrared light spectroscopy was higher in the hyperglycemic (H) than in the normal (N) group after restoration of spontaneous circulation (p < .05). However, tendencies toward increased protein S100beta and 15-keto-dihydro-prostaglandin F2alpha were observed in the H group but were not statistically significant. CONCLUSIONS The responses to 12-min cardiac arrest and cardiopulmonary resuscitation share large similarities during hyperglycemia and normoglycemia. The higher cerebral tissue oxygenation observed in the hyperglycemia needs to be confirmed and the phenomenon needs to be addressed in future studies.
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Maddirala S, Khan A. Optimizing hemodynamic support in septic shock using central and mixed venous oxygen saturation. Crit Care Clin 2010; 26:323-33, table of contents. [PMID: 20381723 DOI: 10.1016/j.ccc.2009.12.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Global tissue hypoxia is one of the most important factors in the development of multisystem organ dysfunction. In hemodynamically unstable critically ill patients, central venous oxygen saturation (Scvo(2)) and mixed venous oxygen saturation (Svo(2)) monitoring has been shown to be a better indicator of global tissue hypoxia than vital signs and other clinical parameters alone. Svo(2) is probably more representative of global tissue oxygenation, whereas Scvo(2), is less invasive. Svo(2) and Scvo(2) monitoring can have diagnostic and therapeutic uses in understanding the efficacy of interventions in treating critically ill, hemodynamically unstable patients.
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Affiliation(s)
- Supriya Maddirala
- Division of Nephrology, Department of Internal Medicine, Oregon Health and Science University, 3181 Southwest Sam Jackson Park Road, Portland, OR 97239, USA
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Tulder R, Vorauer N, Schreiber W. Therapiestrategien des Post-Reanimationssyndromes. Notf Rett Med 2010. [DOI: 10.1007/s10049-009-1278-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nolan JP, Neumar RW, Adrie C, Aibiki M, Berg RA, Bbttiger BW, Callaway C, Clark RS, Geocadin RG, Jauch EC, Kern KB, Laurent I, Longstreth W, Merchant RM, Morley P, Morrison LJ, Nadkarni V, Peberdy MA, Rivers EP, Rodriguez-Nunez A, Sellke FW, Spaulding C, Sunde K, Hoek TV. Post-cardiac arrest syndrome: Epidemiology, pathophysiology, treatment, and prognostication: A Scientific Statement from the International Liaison Committee on Resuscitation; the American Heart Association Emergency Cardiovascular Care Committee; the Council on Cardiovascular Surgery and Anesthesia; the Council on Cardiopulmonary, Perioperative, and Critical Care; the Council on Clinical Cardiology; the Council on Stroke (Part II). Int Emerg Nurs 2010; 18:8-28. [DOI: 10.1016/j.ienj.2009.07.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
An idea of arteriovenous shunts (AVS) was proposed for explanation of dynamic regulation of oxygenation and venous hyperoxia. A formula enabling calculation of AVS and real CO 2 production has recently been derived by comparing data of arterial and venous blood gases. Regarding venous hyperoxia, there is a need to differentiate capillary to tissue transport defect (low oxygen utilisation-LOU) from AVS, which may exist simultaneously. The AVS may be associated with normal or relatively high oxygen utilization from the capillary vessels and increased CO2 production. AVS is proposed to carry protective and ‘stealing’ properties including renal, cardiac, and pulmonary hemodynamic. Calculations of the AVS may be important for dynamic assessment of vascular and metabolic status and in emergency medicine.
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Affiliation(s)
- Alexander P Rozin
- B. Shine Department of Rheumatology, Rambam Health Care Campus and Technion, Haifa, Israel,
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Nolan JP, Neumar RW, Adrie C, Aibiki M, Berg RA, Bbttiger BW, Callaway C, Clark RSB, Geocadin RG, Jauch EC, Kern KB, Laurent I, Longstreth WT, Merchant RM, Morley P, Morrison LJ, Nadkarni V, Peberdy MA, Rivers EP, Rodriguez-Nunez A, Sellke FW, Spaulding C, Sunde K, Hoek TV. Post-cardiac arrest syndrome: Epidemiology, pathophysiology, treatment, and prognostication: A scientific statement from the International Liaison Committee on Resuscitation; the American Heart Association Emergency Cardiovascular Care Committee; the Council on Cardiovascular Surgery and Anesthesia; the Council on Cardiopulmonary, Perioperative, and Critical Care; the Council on Clinical Cardiology; the Council on Stroke (Part 1). Int Emerg Nurs 2009; 17:203-25. [PMID: 19782333 DOI: 10.1016/j.ienj.2009.01.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
AIM OF THE REVIEW To review the epidemiology, pathophysiology, treatment and prognostication in relation to the post-cardiac arrest syndrome. METHODS Relevant articles were identified using PubMed, EMBASE and an American Heart Association EndNote master resuscitation reference library, supplemented by hand searches of key papers. Writing groups comprising international experts were assigned to each section. Drafts of the document were circulated to all authors for comment and amendment. RESULTS The 4 key components of post-cardiac arrest syndrome were identified as (1) post-cardiac arrest brain injury, (2) post-cardiac arrest myocardial dysfunction, (3) systemic ischaemia/reperfusion response, and (4) persistent precipitating pathology. CONCLUSIONS A growing body of knowledge suggests that the individual components of the postcardiac arrest syndrome are potentially treatable.
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Affiliation(s)
- Jerry P Nolan
- Consultant in Anaesthesia and Intensive Care Medicine, Royal United Hospital, Bath, United Kingdom.
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Al-Khafaji A, Rivers E, Shoemaker W. The prospective trial of supranormal values of survivors as therapeutic goals in high-risk surgical patients. Article of Shoemaker et al with expert commentary by Dr. Emanuel Rivers. 1988. J Crit Care 2009; 23:603-6. [PMID: 19056029 DOI: 10.1016/j.jcrc.2008.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2008] [Accepted: 04/07/2008] [Indexed: 11/30/2022]
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Gaieski DF, Band RA, Abella BS, Neumar RW, Fuchs BD, Kolansky DM, Merchant RM, Carr BG, Becker LB, Maguire C, Klair A, Hylton J, Goyal M. Early goal-directed hemodynamic optimization combined with therapeutic hypothermia in comatose survivors of out-of-hospital cardiac arrest. Resuscitation 2009; 80:418-24. [DOI: 10.1016/j.resuscitation.2008.12.015] [Citation(s) in RCA: 240] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2008] [Revised: 11/10/2008] [Accepted: 12/25/2008] [Indexed: 11/28/2022]
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Neumar RW, Nolan JP, Adrie C, Aibiki M, Berg RA, Böttiger BW, Callaway C, Clark RSB, Geocadin RG, Jauch EC, Kern KB, Laurent I, Longstreth WT, Merchant RM, Morley P, Morrison LJ, Nadkarni V, Peberdy MA, Rivers EP, Rodriguez-Nunez A, Sellke FW, Spaulding C, Sunde K, Vanden Hoek T. Post-cardiac arrest syndrome: epidemiology, pathophysiology, treatment, and prognostication. A consensus statement from the International Liaison Committee on Resuscitation (American Heart Association, Australian and New Zealand Council on Resuscitation, European Resuscitation Council, Heart and Stroke Foundation of Canada, InterAmerican Heart Foundation, Resuscitation Council of Asia, and the Resuscitation Council of Southern Africa); the American Heart Association Emergency Cardiovascular Care Committee; the Council on Cardiovascular Surgery and Anesthesia; the Council on Cardiopulmonary, Perioperative, and Critical Care; the Council on Clinical Cardiology; and the Stroke Council. Circulation 2008; 118:2452-83. [PMID: 18948368 DOI: 10.1161/circulationaha.108.190652] [Citation(s) in RCA: 1059] [Impact Index Per Article: 66.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Nolan JP, Neumar RW, Adrie C, Aibiki M, Berg RA, Böttiger BW, Callaway C, Clark RSB, Geocadin RG, Jauch EC, Kern KB, Laurent I, Longstreth WT, Merchant RM, Morley P, Morrison LJ, Nadkarni V, Peberdy MA, Rivers EP, Rodriguez-Nunez A, Sellke FW, Spaulding C, Sunde K, Hoek TV. Post-cardiac arrest syndrome: epidemiology, pathophysiology, treatment, and prognostication. A Scientific Statement from the International Liaison Committee on Resuscitation; the American Heart Association Emergency Cardiovascular Care Committee; the Council on Cardiovascular Surgery and Anesthesia; the Council on Cardiopulmonary, Perioperative, and Critical Care; the Council on Clinical Cardiology; the Council on Stroke. Resuscitation 2008; 79:350-79. [PMID: 18963350 DOI: 10.1016/j.resuscitation.2008.09.017] [Citation(s) in RCA: 697] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Accepted: 09/22/2008] [Indexed: 12/12/2022]
Abstract
AIM OF THE REVIEW To review the epidemiology, pathophysiology, treatment and prognostication in relation to the post-cardiac arrest syndrome. METHODS Relevant articles were identified using PubMed, EMBASE and an American Heart Association EndNote master resuscitation reference library, supplemented by hand searches of key papers. Writing groups comprising international experts were assigned to each section. Drafts of the document were circulated to all authors for comment and amendment. RESULTS The 4 key components of post-cardiac arrest syndrome were identified as (1) post-cardiac arrest brain injury, (2) post-cardiac arrest myocardial dysfunction, (3) systemic ischaemia/reperfusion response, and (4) persistent precipitating pathology. CONCLUSIONS A growing body of knowledge suggests that the individual components of the post-cardiac arrest syndrome are potentially treatable.
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Affiliation(s)
- Jerry P Nolan
- Consultant in Anaesthesia and Intensive Care Medicine, Royal United Hospital, Bath, United Kingdom.
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