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Nutma S, Beishuizen A, van den Bergh WM, Foudraine NA, le Feber J, Filius PMG, Cornet AD, van der Palen J, van Putten MJAM, Hofmeijer J. Ghrelin for Neuroprotection in Post-Cardiac Arrest Coma: A Randomized Clinical Trial. JAMA Neurol 2024; 81:603-610. [PMID: 38709502 PMCID: PMC11074931 DOI: 10.1001/jamaneurol.2024.1088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 03/08/2024] [Indexed: 05/07/2024]
Abstract
Importance Out-of-hospital cardiac arrest survival rates have markedly risen in the last decades, but neurological outcome only improved marginally. Despite research on more than 20 neuroprotective strategies involving patients in comas after cardiac arrest, none have demonstrated unequivocal evidence of efficacy; however, treatment with acyl-ghrelin has shown improved functional and histological brain recovery in experimental models of cardiac arrest and was safe in a wide variety of human study populations. Objective To determine safety and potential efficacy of intravenous acyl-ghrelin to improve neurological outcome in patients in a coma after cardiac arrest. Design, Setting, and Participants A phase 2, double-blind, placebo-controlled, multicenter, randomized clinical trial, Ghrelin Treatment of Comatose Patients After Cardiac Arrest: A Clinical Trial to Promote Cerebral Recovery (GRECO), was conducted between January 18, 2019, and October 17, 2022. Adult patients 18 years or older who were in a comatose state after cardiac arrest were assessed for eligibility; patients were from 3 intensive care units in the Netherlands. Expected death within 48 hours or unfeasibility of treatment initiation within 12 hours were exclusion criteria. Interventions Patients were randomized to receive intravenous acyl-ghrelin, 600 μg (intervention group), or placebo (control group) within 12 hours after cardiac arrest, continued for 7 days, twice daily, in addition to standard care. Main Outcomes and Measures Primary outcome was the score on the Cerebral Performance Categories (CPC) scale at 6 months. Safety outcomes included any serious adverse events. Secondary outcomes were mortality and neuron-specific enolase (NSE) levels on days 1 and 3. Results A total of 783 adult patients in a coma after cardiac arrest were assessed for eligibility, and 160 patients (median [IQR] age, 68 [57-75] years; 120 male [75%]) were enrolled. A total of 81 patients (51%) were assigned to the intervention group, and 79 (49%) were assigned to the control group. The common odds ratio (OR) for any CPC improvement in the intervention group was 1.78 (95% CI, 0.98-3.22; P = .06). This was consistent over all CPC categories. Mean (SD) NSE levels on day 1 after cardiac arrest were significantly lower in the intervention group (34 [6] μg/L vs 56 [13] μg/L; P = .04) and on day 3 (28 [6] μg/L vs 52 [14] μg/L; P = .08). Serious adverse events were comparable in incidence and type between the groups. Mortality was 37% (30 of 81) in the intervention group vs 51% (40 of 79) in the control group (absolute risk reduction, 14%; 95% CI, -2% to 29%; P = .08). Conclusions and Relevance In patients in a coma after cardiac arrest, intravenous treatment with acyl-ghrelin was safe and potentially effective to improve neurological outcome. Phase 3 trials are needed for conclusive evidence. Trial Registration Clinicaltrialsregister.eu: EUCTR2018-000005-23-NL.
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Affiliation(s)
- Sjoukje Nutma
- Department of Clinical Neurophysiology, Technical Medical Center, University of Twente, Enschede, the Netherlands
- Department of Neurology, Medisch Spectrum Twente, Enschede, the Netherlands
| | - Albertus Beishuizen
- Department of Critical Care, Medisch Spectrum Twente, Enschede, the Netherlands
| | - Walter M. van den Bergh
- Department of Critical Care, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | | | - Joost le Feber
- Department of Clinical Neurophysiology, Technical Medical Center, University of Twente, Enschede, the Netherlands
| | | | - Alexander D. Cornet
- Department of Critical Care, Medisch Spectrum Twente, Enschede, the Netherlands
| | - Job van der Palen
- Department of Epidemiology, Medisch Spectrum Twente, Enschede, the Netherlands
- Section of Cognition, Data and Education, Faculty of Behavioral, Management and Social Sciences, University of Twente, Enschede, the Netherlands
| | - Michel J. A. M. van Putten
- Department of Clinical Neurophysiology, Technical Medical Center, University of Twente, Enschede, the Netherlands
- Department of Neurology, Medisch Spectrum Twente, Enschede, the Netherlands
| | - Jeannette Hofmeijer
- Department of Clinical Neurophysiology, Technical Medical Center, University of Twente, Enschede, the Netherlands
- Department of Neurology, Rijnstate Hospital, Arnhem, the Netherlands
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Perego C, Fumagalli F, Motta F, Cerrato M, Micotti E, Olivari D, De Giorgio D, Merigo G, Di Clemente A, Mandelli A, Forloni G, Cervo L, Furlan R, Latini R, Neumar RW, Ristagno G. Evolution of brain injury and neurological dysfunction after cardiac arrest in the rat - A multimodal and comprehensive model. J Cereb Blood Flow Metab 2024:271678X241255599. [PMID: 38770566 DOI: 10.1177/0271678x241255599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Cardiac arrest (CA) is one of the leading causes of death worldwide. Due to hypoxic ischemic brain injury, CA survivors may experience variable degrees of neurological dysfunction. This study, for the first time, describes the progression of CA-induced neuropathology in the rat. CA rats displayed neurological and exploratory deficits. Brain MRI revealed cortical and striatal edema at 3 days (d), white matter (WM) damage in corpus callosum (CC), external capsule (EC), internal capsule (IC) at d7 and d14. At d3 a brain edema significantly correlated with neurological score. Parallel neuropathological studies showed neurodegeneration, reduced neuronal density in CA1 and hilus of hippocampus at d7 and d14, with cells dying at d3 in hilus. Microgliosis increased in cortex (Cx), caudate putamen (Cpu), CA1, CC, and EC up to d14. Astrogliosis increased earlier (d3 to d7) in Cx, Cpu, CC and EC compared to CA1 (d7 to d14). Plasma levels of neurofilament light (NfL) increased at d3 and remained elevated up to d14. NfL levels at d7 correlated with WM damage. The study shows the consequences up to 14d after CA in rats, introducing clinically relevant parameters such as advanced neuroimaging and blood biomarker useful to test therapeutic interventions in this model.
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Affiliation(s)
- Carlo Perego
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Francesca Fumagalli
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Francesca Motta
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Marianna Cerrato
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Edoardo Micotti
- Department of Neuroscience Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Davide Olivari
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Daria De Giorgio
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Giulia Merigo
- Department of Anesthesiology, Intensive Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Angelo Di Clemente
- Department of Neuroscience Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Alessandra Mandelli
- Clinical Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology - INSpe San Raffaele Scientific Institute, Milan, Italy
| | - Gianluigi Forloni
- Department of Neuroscience Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Luigi Cervo
- Department of Neuroscience Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Roberto Furlan
- Clinical Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology - INSpe San Raffaele Scientific Institute, Milan, Italy
| | - Roberto Latini
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Robert W Neumar
- Department of Emergency Medicine and Max Harry Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, Michigan, USA
| | - Giuseppe Ristagno
- Department of Anesthesiology, Intensive Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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3
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Hirsch KG, Tamura T, Ristagno G, Sekhon MS. Wolf Creek XVII Part 8: Neuroprotection. Resusc Plus 2024; 17:100556. [PMID: 38328750 PMCID: PMC10847936 DOI: 10.1016/j.resplu.2024.100556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024] Open
Abstract
Introduction Post-cardiac arrest brain injury (PCABI) is the primary determinant of clinical outcomes for patients who achieve return of spontaneous circulation after cardiac arrest (CA). There are limited neuroprotective therapies available to mitigate the acute pathophysiology of PCABI. Methods Neuroprotection was one of six focus topics for the Wolf Creek XVII Conference held on June 14-17, 2023 in Ann Arbor, Michigan, USA. Conference invitees included international thought leaders and scientists in the field of CA resuscitation from academia and industry. Participants submitted via online survey knowledge gaps, barriers to translation, and research priorities for each focus topic. Expert panels used the survey results and their own perspectives and insights to create and present a preliminary unranked list for each category that was debated, revised and ranked by all attendees to identify the top 5 for each category. Results Top 5 knowledge gaps included developing therapies for neuroprotection; improving understanding of the pathophysiology, mechanisms, and natural history of PCABI; deploying precision medicine approaches; optimizing resuscitation and CPR quality; and determining optimal timing for and duration of interventions. Top 5 barriers to translation included patient heterogeneity; nihilism & lack of knowledge about cardiac arrest; challenges with the translational pipeline; absence of mechanistic biomarkers; and inaccurate neuro-triage and neuroprognostication. Top 5 research priorities focused on translational research and trial optimization; addressing patient heterogeneity and individualized interventions; improving understanding of pathophysiology and mechanisms; developing mechanistic and outcome biomarkers across post-CA time course; and improving implementation of science and technology. Conclusion This overview can serve as a guide to transform the care and outcome of patients with PCABI. Addressing these topics has the potential to improve both research and clinical care in the field of neuroprotection for PCABI.
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Affiliation(s)
- Karen G. Hirsch
- Department of Neurology, Stanford University, Stanford, CA, United States
| | - Tomoyoshi Tamura
- Department of Emergency and Critical Care Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Giuseppe Ristagno
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Mypinder S. Sekhon
- Division of Critical Care Medicine and Department of Medicine, University of British Columbia, Vancouver, Canada
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Nikolovski SS, Lazic AD, Fiser ZZ, Obradovic IA, Tijanic JZ, Raffay V. Recovery and Survival of Patients After Out-of-Hospital Cardiac Arrest: A Literature Review Showcasing the Big Picture of Intensive Care Unit-Related Factors. Cureus 2024; 16:e54827. [PMID: 38529434 PMCID: PMC10962929 DOI: 10.7759/cureus.54827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2024] [Indexed: 03/27/2024] Open
Abstract
As an important public health issue, out-of-hospital cardiac arrest (OHCA) requires several stages of high quality medical care, both on-field and after hospital admission. Post-cardiac arrest shock can lead to severe neurological injury, resulting in poor recovery outcome and increased risk of death. These characteristics make this condition one of the most important issues to deal with in post-OHCA patients hospitalized in intensive care units (ICUs). Also, the majority of initial post-resuscitation survivors have underlying coronary diseases making revascularization procedure another crucial step in early management of these patients. Besides keeping myocardial blood flow at a satisfactory level, other tissues must not be neglected as well, and maintaining mean arterial pressure within optimal range is also preferable. All these procedures can be simplified to a certain level along with using targeted temperature management methods in order to decrease metabolic demands in ICU-hospitalized post-OHCA patients. Additionally, withdrawal of life-sustaining therapy as a controversial ethical topic is under constant re-evaluation due to its possible influence on overall mortality rates in patients initially surviving OHCA. Focusing on all of these important points in process of managing ICU patients is an imperative towards better survival and complete recovery rates.
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Affiliation(s)
- Srdjan S Nikolovski
- Pathology and Laboratory Medicine, Cardiovascular Research Institute, Loyola University Chicago Health Science Campus, Maywood, USA
- Emergency Medicine, Serbian Resuscitation Council, Novi Sad, SRB
| | - Aleksandra D Lazic
- Emergency Center, Clinical Center of Vojvodina, Novi Sad, SRB
- Emergency Medicine, Serbian Resuscitation Council, Novi Sad, SRB
| | - Zoran Z Fiser
- Emergency Medicine, Department of Emergency Medicine, Novi Sad, SRB
| | - Ivana A Obradovic
- Anesthesiology, Resuscitation, and Intensive Care, Sveti Vračevi Hospital, Bijeljina, BIH
| | - Jelena Z Tijanic
- Emergency Medicine, Municipal Institute of Emergency Medicine, Kragujevac, SRB
| | - Violetta Raffay
- School of Medicine, European University Cyprus, Nicosia, CYP
- Emergency Medicine, Serbian Resuscitation Council, Novi Sad, SRB
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Pakdaman H, Gharagozli K, Karamiani F, Shamsi Goushki M, Moini S, Sobhanian A, Maghsoudlu F, Esfandani A, Hosseini MH, Amini Harandi A. MLC901 in hypoxic-ischemic brain injury patients: A double-blind, randomized placebo-controlled pilot study. Medicine (Baltimore) 2023; 102:e33914. [PMID: 37335674 DOI: 10.1097/md.0000000000033914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/21/2023] Open
Abstract
BACKGROUND Hypoxic-ischemic brain injury (HIBI) is a disabling consequence of cardiopulmonary resuscitation, which has no direct treatment except supportive care. Many studies have used pharmacological agents to reduce or stop this disability. MLC901 is a traditional Chinese medicine showing neuroprotective and regenerative effects on focal and global ischemia in previous animal and human studies. We designed an experimental, randomized, double-blind, placebo-controlled study to analyze MLC901 efficacy in HIBI patients. METHODS In a randomized, placebo-controlled trial, 35 patients with HIBI were randomly designated to receive either MLC901 or placebo capsules 3 times per day over 6 months. We assessed the 2 groups by modified Rankin Scale and Glasgow Outcome Scale at baseline, and follow-up visits in 3rd month, and 6th-month after injury. RESULTS Thirty-one patients completed this study. There was no significant difference in baseline characteristics between the 2 groups as regards age, gender, time of resuscitation, the interval between injury and start of the intervention, and the length of intensive care unit stay. Both the placebo and intervention groups improved during the investigation. However, the Glasgow Outcome Scale and modified Rankin Scale scales were significantly improved in the MLC901 group compared to the placebo after 6 months (P < .05) with close to no adverse effects. No major side effect was reported. CONCLUSION MLC901 has shown, compared to placebo, a statistically better improvement at 6 months in neurological functions of patients with HIBI.
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Affiliation(s)
- Hossein Pakdaman
- Brain Mapping Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Admiraal MM, Velseboer DC, Tjabbes H, Vis P, Peeters-Scholte C, Horn J. Neuroprotection after cardiac arrest with 2-iminobiotin: a single center phase IIa study on safety, tolerability, and pharmacokinetics. Front Neurol 2023; 14:1136046. [PMID: 37332991 PMCID: PMC10272808 DOI: 10.3389/fneur.2023.1136046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 04/20/2023] [Indexed: 06/20/2023] Open
Abstract
Background Brain injury is a serious problem in patients who survive out-of-hospital cardiac arrest (OHCA). Neuroprotective drugs could reduce hypoxic-ischemic reperfusion injury. The aim of this study was to investigate the safety, tolerability, and pharmacokinetics (PK) of 2-iminobiotin (2-IB), a selective inhibitor of neuronal nitric oxide synthase. Methods Single-center, open-label dose-escalation study in adult OHCA patients, investigating three 2-IB dosing schedules (targeting an AUC0-24h of 600-1,200 ng*h/m in cohort A, of 2,100-3,300 ng*h/mL in cohort B, and 7,200-8,400 of ng*h/mL in cohort C). Safety was investigated by monitoring vital signs until 15 min after study drug administration and adverse events up to 30 days after admission. Blood sampling for PK analysis was performed. Brain biomarkers and patient outcomes were collected 30 days after OHCA. Results A total of 21 patients was included, eight in cohort A and B and five in cohort C. No changes in vital signs were observed, and no adverse events related to 2-IB were reported. A two-compartment PK model described data the best. Exposure in group A (dosed on bodyweight) was three times higher than targeted (median AUC0-24h 2,398 ng*h/mL). Renal function was an important covariate; therefore, in cohort B, dosing was performed on eGFR on admission. In cohort B and C, the targeted exposure was met (median AUC0-24h 2,917 and 7,323 ng*h/mL, respectively). Conclusion The administration of 2-IB to adults after OHCA is feasible and safe. PK can be well predicted with correction for renal function on admission. Efficacy studies with 2-IB after OHCA are needed.
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Affiliation(s)
- M. M. Admiraal
- Department of Clinical Neurophysiology, Amsterdam UMC, Amsterdam, Netherlands
- Amsterdam Neurosciences, Amsterdam, Netherlands
| | - D. C. Velseboer
- Amsterdam Neurosciences, Amsterdam, Netherlands
- Department of Intensive Care, Amsterdam UMC, Amsterdam, Netherlands
| | - H. Tjabbes
- Neurophyxia BV, ’s-Hertogenbosch, Netherlands
| | - P. Vis
- LAP&P Consultants BV, Leiden, Netherlands
| | | | - J. Horn
- Amsterdam Neurosciences, Amsterdam, Netherlands
- Department of Intensive Care, Amsterdam UMC, Amsterdam, Netherlands
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Tewarie PKB, Tjepkema-Cloostermans MC, Abeysuriya RG, Hofmeijer J, van Putten MJAM. Preservation of thalamocortical circuitry is essential for good recovery after cardiac arrest. PNAS NEXUS 2023; 2:pgad119. [PMID: 37143862 PMCID: PMC10153639 DOI: 10.1093/pnasnexus/pgad119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 03/10/2023] [Accepted: 04/04/2023] [Indexed: 05/06/2023]
Abstract
Continuous electroencephalographam (EEG) monitoring contributes to prediction of neurological outcome in comatose cardiac arrest survivors. While the phenomenology of EEG abnormalities in postanoxic encephalopathy is well known, the pathophysiology, especially the presumed role of selective synaptic failure, is less understood. To further this understanding, we estimate biophysical model parameters from the EEG power spectra from individual patients with a good or poor recovery from a postanoxic encephalopathy. This biophysical model includes intracortical, intrathalamic, and corticothalamic synaptic strengths, as well as synaptic time constants and axonal conduction delays. We used continuous EEG measurements from hundred comatose patients recorded during the first 48 h postcardiac arrest, 50 with a poor neurological outcome [cerebral performance category ( CPC = 5 ) ] and 50 with a good neurological outcome ( CPC = 1 ). We only included patients that developed (dis-)continuous EEG activity within 48 h postcardiac arrest. For patients with a good outcome, we observed an initial relative excitation in the corticothalamic loop and corticothalamic propagation that subsequently evolved towards values observed in healthy controls. For patients with a poor outcome, we observed an initial increase in the cortical excitation-inhibition ratio, increased relative inhibition in the corticothalamic loop, delayed corticothalamic propagation of neuronal activity, and severely prolonged synaptic time constants that did not return to physiological values. We conclude that the abnormal EEG evolution in patients with a poor neurological recovery after cardiac arrest may result from persistent and selective synaptic failure that includes corticothalamic circuitry and also delayed corticothalamic propagation.
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Affiliation(s)
| | - Marleen C Tjepkema-Cloostermans
- Clinical Neurophysiology Group, University of Twente, 7522 NH Enschede, Netherlands
- Department of Neurology and Clinical Neurophysiology, Medisch Spectrum Twente, 7512 KZ Enschede, Netherlands
| | - Romesh G Abeysuriya
- Computational Epidemic Modelling, Burnet Institute, 3004 Melbourne, Australia
| | - Jeannette Hofmeijer
- Clinical Neurophysiology Group, University of Twente, 7522 NH Enschede, Netherlands
- Department of Neurology, Rijnstate Hospital, 6815 AD Arnhem, Netherlands
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8
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Nutma S, Tjepkema-Cloostermans MC, Ruijter BJ, Tromp SC, van den Bergh WM, Foudraine NA, H M Kornips F, Drost G, Scholten E, Strang A, Beishuizen A, J A M van Putten M, Hofmeijer J. Effects of targeted temperature management at 33°C vs. 36°C on comatose patients after cardiac arrest stratified by the severity of encephalopathy. Resuscitation 2022; 173:147-153. [PMID: 35122892 DOI: 10.1016/j.resuscitation.2022.01.026] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVES To assess neurological outcome after targeted temperature management (TTM) at 33°C vs. 36°C, stratified by the severity of encephalopathy based on EEG-patterns at 12 and 24h. DESIGN Post hoc analysis of prospective cohort study. SETTING Five Dutch Intensive Care units. PATIENTS 479 adult comatose post-cardiac arrest patients. INTERVENTIONS TTM at 33°C (n=270) or 36°C (n=209) and continuous EEG monitoring. MEASUREMENTS AND MAIN RESULTS Outcome according to the cerebral performance category (CPC) score at 6 months post-cardiac arrest was similar after 33°C and 36°C. However, when stratified by the severity of encephalopathy based on EEG-patterns at 12 and 24h after cardiac arrest, the proportion of good outcome (CPC 1-2) in patients with moderate encephalopathy was significantly larger after TTM at 33°C (66% vs. 45%; Odds Ratios 2.38, 95% CI=1.32-4.30; p=0.004). In contrast, with mild encephalopathy, there was no statistically significant difference in the proportion of patients with good outcome between 33°C and 36°C (88% vs. 81%; OR 1.68, 95% CI=0.65-4.38; p=0.282). Ordinal regression analysis showed a shift towards higher CPC scores when treated with TTM 33°C as compared with 36°C in moderate encephalopathy (cOR 2.39; 95% CI=1.40-4.08; p=0.001), but not in mild encephalopathy (cOR 0.81 95% CI=0.41-1.59; p=0.537). Adjustment for initial cardiac rhythm and cause of arrest did not change this relationship. CONCLUSIONS Effects of TTM probably depend on the severity of encephalopathy in comatose patients after cardiac arrest. These results support inclusion of predefined subgroup analyses based on EEG measures of the severity of encephalopathy in future clinical trials.
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Affiliation(s)
- Sjoukje Nutma
- Departments of Neurology and Clinical Neurophysiology, Medical Spectrum Twente, Enschede; Department of Clinical Neurophysiology, Technical Medical Center, University of Twente, Enschede.
| | | | - Barry J Ruijter
- Department of Clinical Neurophysiology, Technical Medical Center, University of Twente, Enschede
| | - Selma C Tromp
- Departments of Neurology and Clinical Neurophysiology, St Antonius Hospital, Nieuwegein
| | - Walter M van den Bergh
- Department of Critical Care, University Medical Center Groningen, University of Groningen, Groningen
| | | | | | - Gea Drost
- Departments of Neurology and Neurosurgery, University Medical Center Groningen, University of Groningen, Groningen
| | - Erik Scholten
- Department of Intensive Care, St Antonius Hospital, Nieuwegein
| | - Aart Strang
- Department of Intensive Care, Rijnstate Hospital, Arnhem
| | | | - Michel J A M van Putten
- Departments of Neurology and Clinical Neurophysiology, Medical Spectrum Twente, Enschede; Department of Clinical Neurophysiology, Technical Medical Center, University of Twente, Enschede
| | - Jeannette Hofmeijer
- Department of Clinical Neurophysiology, Technical Medical Center, University of Twente, Enschede; Department of Neurology, Rijnstate Hospital, Arnhem, the Netherlands
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Kang C, Jeong W, Park JS, You Y, Min JH, Cho YC, Ahn HJ, In YN, Lee IH. Different Stratification of Physiological Factors Affecting Cerebral Perfusion Pressure in Hypoxic-Ischemic Brain Injury after Cardiac Arrest According to Visible or Non-Visible Primary Brain Injury: A Retrospective Observational Study. J Clin Med 2021; 10:jcm10225385. [PMID: 34830665 PMCID: PMC8625895 DOI: 10.3390/jcm10225385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/04/2021] [Accepted: 11/16/2021] [Indexed: 12/05/2022] Open
Abstract
We aimed to explore the stratification of physiological factors affecting cerebral perfusion pressure, including arterial oxygen tension, arterial carbon dioxide tension, mean arterial pressure, intracranial pressure (ICP), and blood-brain barrier (BBB) status, with respect to primary or secondary brain injury (PBI or SBI) after out-of-hospital cardiac arrest (OHCA). Among the retrospectively enrolled 97 comatose OHCA survivors undergoing post-cardiac arrest (PCA) care, 46 (47.4%) with already established PBI (high signal intensity (HSI) on diffusion-weighted imaging (DWI) had higher ICP (p = 0.02) and poorer BBB status (p < 0.01) than the non-HSI group. On subgroup analysis within the non-HSI group to exclude the confounding effect of already established PBI, 40 (78.4%) patients with good neurological outcomes had lower ICP at 24 h (11.0 vs. 16.0 mmHg, p < 0.01) and more stable BBB status (p = 0.17 in pairwise comparison) compared to those with poor neurological outcomes, despite the non-significant differences in other physiological factors. OHCA survivors with HSI on DWI showed significantly higher ICP and poorer BBB status at baseline before PCA care than those without HSI. Despite the negative DWI findings before PCA care, OHCA survivors have a cerebral penumbra at risk for potentially leading the poor neurological outcome from unsuppressed SBI, which may be associated with increased ICP and BBB permeability.
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Affiliation(s)
- Changshin Kang
- Department of Emergency Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (C.K.); (W.J.); (Y.Y.); (Y.C.C.); (H.J.A.)
| | - Wonjoon Jeong
- Department of Emergency Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (C.K.); (W.J.); (Y.Y.); (Y.C.C.); (H.J.A.)
| | - Jung Soo Park
- Department of Emergency Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (C.K.); (W.J.); (Y.Y.); (Y.C.C.); (H.J.A.)
- Department of Emergency Medicine, College of Medicine, Chungnam National University, 282 Mokdong-ro, Jung-gu, Daejeon 35015, Korea; (J.H.M.); (Y.N.I.)
- Correspondence: ; Tel.: +82-42-280-6001
| | - Yeonho You
- Department of Emergency Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (C.K.); (W.J.); (Y.Y.); (Y.C.C.); (H.J.A.)
| | - Jin Hong Min
- Department of Emergency Medicine, College of Medicine, Chungnam National University, 282 Mokdong-ro, Jung-gu, Daejeon 35015, Korea; (J.H.M.); (Y.N.I.)
- Department of Emergency Medicine, Chungnam National University Sejong Hospital, 20 Bodeum 7-ro, Sejong 30099, Korea
| | - Yong Chul Cho
- Department of Emergency Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (C.K.); (W.J.); (Y.Y.); (Y.C.C.); (H.J.A.)
| | - Hong Joon Ahn
- Department of Emergency Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (C.K.); (W.J.); (Y.Y.); (Y.C.C.); (H.J.A.)
- Department of Emergency Medicine, College of Medicine, Chungnam National University, 282 Mokdong-ro, Jung-gu, Daejeon 35015, Korea; (J.H.M.); (Y.N.I.)
| | - Yong Nam In
- Department of Emergency Medicine, College of Medicine, Chungnam National University, 282 Mokdong-ro, Jung-gu, Daejeon 35015, Korea; (J.H.M.); (Y.N.I.)
- Department of Emergency Medicine, Chungnam National University Sejong Hospital, 20 Bodeum 7-ro, Sejong 30099, Korea
| | - In Ho Lee
- Department of Radiology, College of Medicine, Chungnam National University, 282 Mokdong-ro, Jung-gu, Daejeon 35015, Korea;
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