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Preuß S, Multmeier J, Stenzel W, Major S, Ploner CJ, Storm C, Nee J, Leithner C, Endisch C. Survival, but not the severity of hypoxic-ischemic encephalopathy, is associated with higher mean arterial blood pressure after cardiac arrest: a retrospective cohort study. Front Cardiovasc Med 2024; 11:1337344. [PMID: 38774664 PMCID: PMC11106407 DOI: 10.3389/fcvm.2024.1337344] [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: 11/12/2023] [Accepted: 04/15/2024] [Indexed: 05/24/2024] Open
Abstract
Background This study investigates the association between the mean arterial blood pressure (MAP), vasopressor requirement, and severity of hypoxic-ischemic encephalopathy (HIE) after cardiac arrest (CA). Methods Between 2008 and 2017, we retrospectively analyzed the MAP 200 h after CA and quantified the vasopressor requirements using the cumulative vasopressor index (CVI). Through a postmortem brain autopsy in non-survivors, the severity of the HIE was histopathologically dichotomized into no/mild and severe HIE. In survivors, we dichotomized the severity of HIE into no/mild cerebral performance category (CPC) 1 and severe HIE (CPC 4). We investigated the regain of consciousness, causes of death, and 5-day survival as hemodynamic confounders. Results Among the 350 non-survivors, 117 had histopathologically severe HIE while 233 had no/mild HIE, without differences observed in the MAP (73.1 vs. 72.0 mmHg, pgroup = 0.639). Compared to the non-survivors, 211 patients with CPC 1 and 57 patients with CPC 4 had higher MAP values that showed significant, but clinically non-relevant, MAP differences (81.2 vs. 82.3 mmHg, pgroup < 0.001). The no/mild HIE non-survivors (n = 54), who regained consciousness before death, had higher MAP values compared to those with no/mild HIE (n = 179), who remained persistently comatose (74.7 vs. 69.3 mmHg, pgroup < 0.001). The no/mild HIE non-survivors, who regained consciousness, required fewer vasopressors (CVI 2.1 vs. 3.6, pgroup < 0.001). Independent of the severity of HIE, the survivors were weaned faster from vasopressors (CVI 1.0). Conclusions Although a higher MAP was associated with survival in CA patients treated with a vasopressor-supported MAP target above 65 mmHg, the severity of HIE was not. Awakening from coma was associated with less vasopressor requirements. Our results provide no evidence for a MAP target above the current guideline recommendations that can decrease the severity of HIE.
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Affiliation(s)
- Sandra Preuß
- Department of Neurology, AG Emergency and Critical Care Neurology, Campus Virchow Klinikum, Charité Universitätsmedizin Berlin, Berlin, Germany
- Department of Cardiology and Angiology, Charité Campus Mitte, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Jan Multmeier
- Department of Neurology, AG Emergency and Critical Care Neurology, Campus Virchow Klinikum, Charité Universitätsmedizin Berlin, Berlin, Germany
- Ada Health GmbH, Berlin, Germany
| | - Werner Stenzel
- Department of Neuropathology, Charité Campus Mitte, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Sebastian Major
- Center for Stroke Research, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Christoph J. Ploner
- Department of Neurology, AG Emergency and Critical Care Neurology, Campus Virchow Klinikum, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Christian Storm
- Department of Nephrology and Intensive Care Medicine, Cardiac Arrest Center of Excellence Berlin, Campus Virchow Klinikum, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Jens Nee
- Department of Nephrology and Intensive Care Medicine, Cardiac Arrest Center of Excellence Berlin, Campus Virchow Klinikum, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Christoph Leithner
- Department of Neurology, AG Emergency and Critical Care Neurology, Campus Virchow Klinikum, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Christian Endisch
- Department of Neurology, AG Emergency and Critical Care Neurology, Campus Virchow Klinikum, Charité Universitätsmedizin Berlin, Berlin, Germany
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Fischer D, Edlow BL. Coma Prognostication After Acute Brain Injury: A Review. JAMA Neurol 2024:2815829. [PMID: 38436946 DOI: 10.1001/jamaneurol.2023.5634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
Importance Among the most impactful neurologic assessments is that of neuroprognostication, defined here as the prediction of neurologic recovery from disorders of consciousness caused by severe, acute brain injury. Across a range of brain injury etiologies, these determinations often dictate whether life-sustaining treatment is continued or withdrawn; thus, they have major implications for morbidity, mortality, and health care costs. Neuroprognostication relies on a diverse array of tests, including behavioral, radiologic, physiological, and serologic markers, that evaluate the brain's functional and structural integrity. Observations Prognostic markers, such as the neurologic examination, electroencephalography, and conventional computed tomography and magnetic resonance imaging (MRI), have been foundational in assessing a patient's current level of consciousness and capacity for recovery. Emerging techniques, such as functional MRI, diffusion MRI, and advanced forms of electroencephalography, provide new ways of evaluating the brain, leading to evolving schemes for characterizing neurologic function and novel methods for predicting recovery. Conclusions and Relevance Neuroprognostic markers are rapidly evolving as new ways of assessing the brain's structural and functional integrity after brain injury are discovered. Many of these techniques remain in development, and further research is needed to optimize their prognostic utility. However, even as such efforts are underway, a series of promising findings coupled with the imperfect predictive value of conventional prognostic markers and the high stakes of these assessments have prompted clinical guidelines to endorse emerging techniques for neuroprognostication. Thus, clinicians have been thrust into an uncertain predicament in which emerging techniques are not yet perfected but too promising to ignore. This review illustrates the current, and likely future, landscapes of prognostic markers. No matter how much prognostic markers evolve and improve, these assessments must be approached with humility and individualized to reflect each patient's values.
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Affiliation(s)
- David Fischer
- Division of Neurocritical Care, Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - Brian L Edlow
- Center for Neurotechnology and Neurorecovery, Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown
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Farg H, Elnakib A, Gebreil A, Alksas A, van Bogaert E, Mahmoud A, Khalil A, Ghazal M, Abou El-Ghar M, El-Baz A, Contractor S. Diagnostic value of PET imaging in clinically unresponsive patients. Br J Radiol 2024; 97:283-291. [PMID: 38308033 DOI: 10.1093/bjr/tqad040] [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: 01/18/2023] [Revised: 07/27/2023] [Accepted: 11/21/2023] [Indexed: 02/04/2024] Open
Abstract
Rapid advancements in the critical care management of acute brain injuries have facilitated the survival of numerous patients who may have otherwise succumbed to their injuries. The probability of conscious recovery hinges on the extent of structural brain damage and the level of metabolic and functional cerebral impairment, which remain challenging to assess via laboratory, clinical, or functional tests. Current research settings and guidelines highlight the potential value of fluorodeoxyglucose-PET (FDG-PET) for diagnostic and prognostic purposes, emphasizing its capacity to consistently illustrate a metabolic reduction in cerebral glucose uptake across various disorders of consciousness. Crucially, FDG-PET might be a pivotal tool for differentiating between patients in the minimally conscious state and those in the unresponsive wakefulness syndrome, a persistent clinical challenge. In patients with disorders of consciousness, PET offers utility in evaluating the degree and spread of functional disruption, as well as identifying irreversible neural damage. Further, studies that capture responses to external stimuli can shed light on residual or revived brain functioning. Nevertheless, the validity of these findings in predicting clinical outcomes calls for additional long-term studies with larger patient cohorts suffering from consciousness impairment. Misdiagnosis of conscious illnesses during bedside clinical assessments remains a significant concern. Based on the clinical research settings, current clinical guidelines recommend PET for diagnostic and/or prognostic purposes. This review article discusses the clinical categories of conscious disorders and the diagnostic and prognostic value of PET imaging in clinically unresponsive patients, considering the known limitations of PET imaging in such contexts.
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Affiliation(s)
- Hashim Farg
- Radiology Department, Urology and Nephrology Center, Mansoura University, 35516 Mansoura, Egypt
| | - Ahmed Elnakib
- BioImaging Lab, Bioengineering Department, University of Louisville, Louisville, KY 40292, United States
| | - Ahmad Gebreil
- BioImaging Lab, Bioengineering Department, University of Louisville, Louisville, KY 40292, United States
| | - Ahmed Alksas
- BioImaging Lab, Bioengineering Department, University of Louisville, Louisville, KY 40292, United States
| | - Eric van Bogaert
- Department of Radiology, University of Louisville, Louisville, KY 40202, United States
| | - Ali Mahmoud
- BioImaging Lab, Bioengineering Department, University of Louisville, Louisville, KY 40292, United States
| | - Ashraf Khalil
- College of Technological Innovation, Zayed University, Abu Dhabi 4783, United Arab Emirates
| | - Mohammed Ghazal
- Electrical, Computer, and Biomedical Engineering Department, Abu Dhabi University, Abu Dhabi 59911, United Arab Emirates
| | - Mohamed Abou El-Ghar
- Radiology Department, Urology and Nephrology Center, Mansoura University, 35516 Mansoura, Egypt
| | - Ayman El-Baz
- BioImaging Lab, Bioengineering Department, University of Louisville, Louisville, KY 40292, United States
| | - Sohail Contractor
- Department of Radiology, University of Louisville, Louisville, KY 40202, United States
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Dhakal K, Rosenthal ES, Kulpanowski AM, Dodelson JA, Wang Z, Cudemus-Deseda G, Villien M, Edlow BL, Presciutti AM, Januzzi JL, Ning M, Taylor Kimberly W, Amorim E, Brandon Westover M, Copen WA, Schaefer PW, Giacino JT, Greer DM, Wu O. Increased task-relevant fMRI responsiveness in comatose cardiac arrest patients is associated with improved neurologic outcomes. J Cereb Blood Flow Metab 2024; 44:50-65. [PMID: 37728641 PMCID: PMC10905635 DOI: 10.1177/0271678x231197392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/27/2023] [Accepted: 06/29/2023] [Indexed: 09/21/2023]
Abstract
Early prediction of the recovery of consciousness in comatose cardiac arrest patients remains challenging. We prospectively studied task-relevant fMRI responses in 19 comatose cardiac arrest patients and five healthy controls to assess the fMRI's utility for neuroprognostication. Tasks involved instrumental music listening, forward and backward language listening, and motor imagery. Task-specific reference images were created from group-level fMRI responses from the healthy controls. Dice scores measured the overlap of individual subject-level fMRI responses with the reference images. Task-relevant responsiveness index (Rindex) was calculated as the maximum Dice score across the four tasks. Correlation analyses showed that increased Dice scores were significantly associated with arousal recovery (P < 0.05) and emergence from the minimally conscious state (EMCS) by one year (P < 0.001) for all tasks except motor imagery. Greater Rindex was significantly correlated with improved arousal recovery (P = 0.002) and consciousness (P = 0.001). For patients who survived to discharge (n = 6), the Rindex's sensitivity was 75% for predicting EMCS (n = 4). Task-based fMRI holds promise for detecting covert consciousness in comatose cardiac arrest patients, but further studies are needed to confirm these findings. Caution is necessary when interpreting the absence of task-relevant fMRI responses as a surrogate for inevitable poor neurological prognosis.
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Affiliation(s)
- Kiran Dhakal
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Eric S Rosenthal
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Annelise M Kulpanowski
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Jacob A Dodelson
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Zihao Wang
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Gaston Cudemus-Deseda
- Department of Cardiac Anesthesiology and Critical Care Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Marjorie Villien
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Brian L Edlow
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Alexander M Presciutti
- Department of Psychiatry, Center for Health Outcomes and Interdisciplinary Research, Massachusetts General Hospital, Boston, MA, USA
| | - James L Januzzi
- Department of Medicine, Cardiology Division, Massachusetts General Hospital and Baim Institute for Clinical Research, Boston, MA, USA
| | - MingMing Ning
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - W Taylor Kimberly
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Edilberto Amorim
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | | | - William A Copen
- Department of Radiology, Neuroradiology Division, Massachusetts General Hospital, Boston, MA, USA
| | - Pamela W Schaefer
- Department of Radiology, Neuroradiology Division, Massachusetts General Hospital, Boston, MA, USA
| | - Joseph T Giacino
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Harvard Medical School, Charlestown, MA, USA
| | - David M Greer
- Department of Neurology, Boston University School of Medicine, Boston Medical Center, Boston, MA, USA
| | - Ona Wu
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
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Carlson JM, Lin DJ. Prognostication in Prolonged and Chronic Disorders of Consciousness. Semin Neurol 2023; 43:744-757. [PMID: 37758177 DOI: 10.1055/s-0043-1775792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Patients with prolonged disorders of consciousness (DOCs) longer than 28 days may continue to make significant gains and achieve functional recovery. Occasionally, this recovery trajectory may extend past 3 (for nontraumatic etiologies) and 12 months (for traumatic etiologies) into the chronic period. Prognosis is influenced by several factors including state of DOC, etiology, and demographics. There are several testing modalities that may aid prognostication under active investigation including electroencephalography, functional and anatomic magnetic resonance imaging, and event-related potentials. At this time, only one treatment (amantadine) has been routinely recommended to improve functional recovery in prolonged DOC. Given that some patients with prolonged or chronic DOC have the potential to recover both consciousness and functional status, it is important for neurologists experienced in prognostication to remain involved in their care.
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Affiliation(s)
- Julia M Carlson
- Division of Neurocritical Care, Department of Neurology, University of North Carolina Hospital, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - David J Lin
- Center for Neurotechnology and Neurorecovery, Division of Neurocritical Care and Stroke Service, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
- Center for Neurorestoration and Neurotechnology, Rehabilitation Research and Development Service, Department of Veterans Affairs, Providence, Rhode Island
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Kumar A, Ridha M, Claassen J. Prognosis of consciousness disorders in the intensive care unit. Presse Med 2023; 52:104180. [PMID: 37805070 PMCID: PMC10995112 DOI: 10.1016/j.lpm.2023.104180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 10/03/2023] [Indexed: 10/09/2023] Open
Abstract
Assessments of consciousness are a critical part of prognostic algorithms for critically ill patients suffering from severe brain injuries. There have been significant advances in the field of coma science over the past two decades, providing clinicians with more advanced and precise tools for diagnosing and prognosticating disorders of consciousness (DoC). Advanced neuroimaging and electrophysiological techniques have vastly expanded our understanding of the biological mechanisms underlying consciousness, and have helped identify new states of consciousness. One of these, termed cognitive motor dissociation, can predict functional recovery at 1 year post brain injury, and is present in up to 15-20% of patients with DoC. In this chapter, we review several tools that are used to predict DoC, describing their strengths and limitations, from the neurological examination to advanced imaging and electrophysiologic techniques. We also describe multimodal assessment paradigms that can be used to identify covert consciousness and thus help recognize patients with the potential for future recovery and improve our prognostication practices.
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Affiliation(s)
- Aditya Kumar
- Department of Neurology, Columbia University Medical Center, New York-Presbyterian Hospital, New York, NY, USA
| | - Mohamed Ridha
- Department of Neurology, Columbia University Medical Center, New York-Presbyterian Hospital, New York, NY, USA
| | - Jan Claassen
- Department of Neurology, Columbia University Medical Center, New York-Presbyterian Hospital, New York, NY, USA.
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Zhang J, Lu Y, Yu P, Li Z, Liu Y, Zhang J, Tang X, Yu S. Therapeutic hypothermia alleviates myocardial ischaemia-reperfusion injury by inhibiting inflammation and fibrosis via the mediation of the SIRT3/NLRP3 signalling pathway. J Cell Mol Med 2022; 26:4995-5007. [PMID: 36036085 PMCID: PMC9549509 DOI: 10.1111/jcmm.17523] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 07/18/2022] [Accepted: 08/09/2022] [Indexed: 11/11/2022] Open
Abstract
Therapeutic hypothermia (TH) may attenuate myocardial ischaemia–reperfusion injury, thereby improving outcomes in acute myocardial infarction. However, the specific mechanism by which TH alleviates MIRI has not been elucidated so far. In this study, 120 healthy male Sprague‐Dawley rats were randomly divided into five groups. Haemodynamic parameters, myocardial infarction area, histological changes and the levels of cardiac enzymes, caspase‐1 and inflammatory cytokines were determined. In addition, the extent of myocardial fibrosis, the degree of cardiomyocyte apoptosis and the expression levels of SIRT3, GSDMD‐N, fibrosis‐related proteins and inflammation‐related proteins were estimated.TH reduced myocardial infarct area and cardiac enzyme levels, improved cardiomyopathic damage and haemodynamic indexes, and attenuated myocardial fibrosis, the protein expression levels of collagen I and III, myocardial apoptosis, the levels of inflammatory cytokines and inflammation‐related proteins. Notably, the immunofluorescence and protein expression levels of SIRT3 were upregulated in the 34H+DMSO group compared to the I/R group, but this protective effect was abolished by the SIRT3 inhibitor 3‐TYP. After administration of Mcc950, the reversal effects of 3‐TYP were significantly abolished, and TH could protect against MIRI in a rat isolated heart model by inhibiting inflammation and fibrosis. The SIRT3/NLRP3 signalling pathway is one of the most important signalling pathways in this regard.
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Affiliation(s)
- Jing Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yimei Lu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Peng Yu
- Department of Metabolism and Endocrinology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhangwang Li
- The Second Clinical Medical College of Nanchang University, Nanchang, China
| | - Yang Liu
- The Second Clinical Medical College of Nanchang University, Nanchang, China
| | - Jun Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiaoyi Tang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Shuchun Yu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
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Multimodal MRI-Based Whole-Brain Assessment in Patients In Anoxoischemic Coma by Using 3D Convolutional Neural Networks. Neurocrit Care 2022; 37:303-312. [PMID: 35876960 PMCID: PMC9343298 DOI: 10.1007/s12028-022-01525-z] [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: 12/02/2021] [Accepted: 04/20/2022] [Indexed: 11/17/2022]
Abstract
Background There is an unfulfilled need to find the best way to automatically capture, analyze, organize, and merge structural and functional brain magnetic resonance imaging (MRI) data to ultimately extract relevant signals that can assist the medical decision process at the bedside of patients in postanoxic coma. We aimed to develop and validate a deep learning model to leverage multimodal 3D MRI whole-brain times series for an early evaluation of brain damages related to anoxoischemic coma. Methods This proof-of-concept, prospective, cohort study was undertaken at the intensive care unit affiliated with the University Hospital (Toulouse, France), between March 2018 and May 2020. All patients were scanned in coma state at least 2 days (4 ± 2 days) after cardiac arrest. Over the same period, age-matched healthy volunteers were recruited and included. Brain MRI quantification encompassed both “functional data” from regions of interest (precuneus and posterior cingulate cortex) with whole-brain functional connectivity analysis and “structural data” (gray matter volume, T1-weighted, fractional anisotropy, and mean diffusivity). A specifically designed 3D convolutional neuronal network (CNN) was created to allow conscious state discrimination (coma vs. controls) by using raw MRI indices as the input. A voxel-wise visualization method based on the study of convolutional filters was applied to support CNN outcome. The Ethics Committee of the University Teaching Hospital of Toulouse, France (2018-A31) approved the study and informed consent was obtained from all participants. Results The final cohort consisted of 29 patients in postanoxic coma and 34 healthy volunteers. Coma patients were successfully discerned from controls by using 3D CNN in combination with different MR indices. The best accuracy was achieved by functional MRI data, in particular with resting-state functional MRI of the posterior cingulate cortex, with an accuracy of 0.96 (range 0.94–0.98) on the test set from 10-time repeated tenfold cross-validation. Even more satisfactory performances were achieved through the majority voting strategy, which was able to compensate for mistakes from single MR indices. Visualization maps allowed us to identify the most relevant regions for each MRI index, notably regions previously described as possibly being involved in consciousness emergence. Interestingly, a posteriori analysis of misclassified patients indicated that they may present some common functional MRI traits with controls, which suggests further favorable outcomes. Conclusions A fully automated identification of clinically relevant signals from complex multimodal neuroimaging data is a major research topic that may bring a radical paradigm shift in the neuroprognostication of patients with severe brain injury. We report for the first time a successful discrimination between patients in postanoxic coma patients from people serving as controls by using 3D CNN whole-brain structural and functional MRI data. Clinical Trial Numberhttp://ClinicalTrials.gov (No. NCT03482115). Supplementary Information The online version contains supplementary material available at 10.1007/s12028-022-01525-z.
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Kulpanowski AM, Copen WA, Hancock BL, Rosenthal ES, Schoenfeld DA, Dodelson JA, Edlow BL, Kimberly WT, Amorim E, Westover MB, Ning MM, Schaefer PW, Malhotra R, Giacino JT, Greer DM, Wu O. Severe cerebral edema in substance-related cardiac arrest patients. Resuscitation 2022; 173:103-111. [PMID: 35149137 PMCID: PMC9282938 DOI: 10.1016/j.resuscitation.2022.01.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 01/01/2022] [Accepted: 01/31/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND Studies of neurologic outcomes have found conflicting results regarding differences between patients with substance-related cardiac arrests (SRCA) and non-SRCA. We investigate the effects of SRCA on severe cerebral edema development, a neuroimaging intermediate endpoint for neurologic injury. METHODS 327 out-of-hospital comatose cardiac arrest patients were retrospectively analyzed. Demographics and baseline clinical characteristics were examined. SRCA categorization was based on admission toxicology screens. Severe cerebral edema classification was based on radiology reports. Poor clinical outcomes were defined as discharge Cerebral Performance Category scores > 3. RESULTS SRCA patients (N = 86) were younger (P < 0.001), and more likely to have non-shockable rhythms (P < 0.001), be unwitnessed (P < 0.001), lower Glasgow Coma Scale scores (P < 0.001), absent brainstem reflexes (P < 0.05) and develop severe cerebral edema (P < 0.001) than non-SRCA patients (N = 241). Multivariable analyses found younger age (P < 0.001), female sex (P = 0.008), non-shockable rhythm (P = 0.01) and SRCA (P = 0.05) to be predictors of severe cerebral edema development. Older age (P < 0.001), non-shockable rhythm (P = 0.02), severe cerebral edema (P < 0.001), and absent pupillary light reflexes (P = 0.004) were predictors of poor outcomes. SRCA patients had higher proportion of brain deaths (P < 0.001) compared to non-SRCA patients. CONCLUSIONS SRCA results in higher rates of severe cerebral edema development and brain death. The absence of statistically significant differences in discharge outcomes or survival between SRCA and non-SRCA patients may be related to the higher rate of withdrawal of life-sustaining treatment (WLST) in the non-SRCA group. Future neuroprognostic studies may opt to include neuroimaging markers as intermediate measures of neurologic injury which are not influenced by WLST decisions.
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Affiliation(s)
- Annelise M Kulpanowski
- Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, United States
| | - William A Copen
- Department of Radiology, Massachusetts General Hospital, Boston, MA, United States
| | - Brandon L Hancock
- Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, United States
| | - Eric S Rosenthal
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States
| | - David A Schoenfeld
- Biostatistics Center, Massachusetts General Hospital, Boston, MA, United States
| | - Jacob A Dodelson
- Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, United States
| | - Brian L Edlow
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States
| | - W Taylor Kimberly
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States
| | - Edilberto Amorim
- Department of Neurology, University of California San Francisco, San Francisco, CA, United States
| | - M Brandon Westover
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States
| | - Ming Ming Ning
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States
| | - Pamela W Schaefer
- Department of Radiology, Massachusetts General Hospital, Boston, MA, United States
| | - Rajeev Malhotra
- Division of Cardiology, Massachusetts General Hospital, Boston, MA, United States
| | - Joseph T Giacino
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, United States
| | - David M Greer
- Department of Neurology, Boston University and Boston Medical Center, Boston, MA, United States
| | - Ona Wu
- Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, United States.
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11
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Lee JW, Sreepada LP, Bevers MB, Li K, Scirica BM, Santana da Silva D, Henderson GV, Bay C, Lin AP. Magnetic Resonance Spectroscopy of Hypoxic-Ischemic Encephalopathy After Cardiac Arrest. Neurology 2022; 98:e1226-e1237. [PMID: 35017308 PMCID: PMC8967333 DOI: 10.1212/wnl.0000000000013297] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 12/27/2021] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND AND OBJECTIVES To correlate brain metabolites with clinical outcome using magnetic resonance spectroscopy (MRS) in patients undergoing targeted temperature management (TTM) after cardiac arrest and assess their relationships to MRI and EEG variables. METHODS A prospective cohort of 50 patients was studied. The primary outcome was coma recovery to follow commands. Comparison of MRS measures in the posterior cingulate gyrus, parietal white matter, basal ganglia, and brainstem were also made to 25 normative controls. RESULTS Fourteen of 50 patients achieved coma recovery before hospital discharge. There was a significant decrease in total N-acetylaspartate (NAA/Cr) and an increase in lactate/creatine (Lac/Cr) in patients who did not recover, with changes most prominent in the posterior cingulate gyrus. Patients who recovered had decrease in NAA/Cr as compared to controls. NAA/Cr had a strong monotonic relationship with MRI cortical apparent diffusion coefficient (ADC); Lac level exponentially increased with decreasing ADC. EEG suppression/burst suppression was strongly associated with Lac elevation. DISCUSSION NAA and Lac changes are associated with clinical/MRI/EEG changes consistent with hypoxic-ischemic encephalopathy (HIE) and are most prominent in the posterior cingulate gyrus. NAA/Cr decrease observed in patients with good outcomes suggests mild HIE in patients asymptomatic at hospital discharge. The appearance of cortical Lac represents a deterioration of aerobic energy metabolism and is associated with EEG background suppression, synaptic transmission failure, and severe, potentially irreversible HIE. CLASSIFICATION OF EVIDENCE This study provides Class IV evidence that in patients undergoing TTM after cardiac arrest, brain MRS-determined decrease in total NAA/Cr and an increase in Lac/Cr are associated with an increased risk of not recovering.
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Affiliation(s)
- Jong Woo Lee
- From the Department of Neurology (J.W.L., M.B., K.L., G.V.H.), Department of Radiology (L.S., C.B., A.P.L.), and Department of Medicine, Division of Cardiology (B.S., D.S.d.S.), Brigham and Women's Hospital, Boston, MA
| | - Lasya P Sreepada
- From the Department of Neurology (J.W.L., M.B., K.L., G.V.H.), Department of Radiology (L.S., C.B., A.P.L.), and Department of Medicine, Division of Cardiology (B.S., D.S.d.S.), Brigham and Women's Hospital, Boston, MA
| | - Matthew B Bevers
- From the Department of Neurology (J.W.L., M.B., K.L., G.V.H.), Department of Radiology (L.S., C.B., A.P.L.), and Department of Medicine, Division of Cardiology (B.S., D.S.d.S.), Brigham and Women's Hospital, Boston, MA
| | - Karen Li
- From the Department of Neurology (J.W.L., M.B., K.L., G.V.H.), Department of Radiology (L.S., C.B., A.P.L.), and Department of Medicine, Division of Cardiology (B.S., D.S.d.S.), Brigham and Women's Hospital, Boston, MA.
| | - Benjamin M Scirica
- From the Department of Neurology (J.W.L., M.B., K.L., G.V.H.), Department of Radiology (L.S., C.B., A.P.L.), and Department of Medicine, Division of Cardiology (B.S., D.S.d.S.), Brigham and Women's Hospital, Boston, MA
| | - Danuzia Santana da Silva
- From the Department of Neurology (J.W.L., M.B., K.L., G.V.H.), Department of Radiology (L.S., C.B., A.P.L.), and Department of Medicine, Division of Cardiology (B.S., D.S.d.S.), Brigham and Women's Hospital, Boston, MA
| | - Galen V Henderson
- From the Department of Neurology (J.W.L., M.B., K.L., G.V.H.), Department of Radiology (L.S., C.B., A.P.L.), and Department of Medicine, Division of Cardiology (B.S., D.S.d.S.), Brigham and Women's Hospital, Boston, MA
| | - Camden Bay
- From the Department of Neurology (J.W.L., M.B., K.L., G.V.H.), Department of Radiology (L.S., C.B., A.P.L.), and Department of Medicine, Division of Cardiology (B.S., D.S.d.S.), Brigham and Women's Hospital, Boston, MA
| | - Alexander P Lin
- From the Department of Neurology (J.W.L., M.B., K.L., G.V.H.), Department of Radiology (L.S., C.B., A.P.L.), and Department of Medicine, Division of Cardiology (B.S., D.S.d.S.), Brigham and Women's Hospital, Boston, MA.
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Spears W, Mian A, Greer D. Brain death: a clinical overview. J Intensive Care 2022; 10:16. [PMID: 35292111 PMCID: PMC8925092 DOI: 10.1186/s40560-022-00609-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 03/06/2022] [Indexed: 01/01/2023] Open
Abstract
Brain death, also commonly referred to as death by neurologic criteria, has been considered a legal definition of death for decades. Its determination involves many considerations and subtleties. In this review, we discuss the philosophy and history of brain death, its clinical determination, and special considerations. We discuss performance of the main clinical components of the brain death exam: assessment of coma, cranial nerves, motor testing, and apnea testing. We also discuss common ancillary tests, including advantages and pitfalls. Special discussion is given to extracorporeal membrane oxygenation, target temperature management, and determination of brain death in pediatric populations. Lastly, we discuss existing controversies and future directions in the field.
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Affiliation(s)
- William Spears
- Department of Neurology, Boston University, Boston Medical Center, 85 East Concord Street, Room 1145, Boston, MA, 02118, USA
| | - Asim Mian
- Department of Radiology, Boston University, Boston Medical Center, 820 Harrison Avenue FGH, 3rd floor, Boston, USA
| | - David Greer
- Department of Neurology, Boston University, Boston Medical Center, 85 East Concord Street, Room 1145, Boston, MA, 02118, USA.
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13
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Rosenthal ES. Seizures, Status Epilepticus, and Continuous EEG in the Intensive Care Unit. Continuum (Minneap Minn) 2021; 27:1321-1343. [PMID: 34618762 DOI: 10.1212/con.0000000000001012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
PURPOSE OF REVIEW This article discusses the evolving definitions of seizures and status epilepticus in the critical care environment and the role of critical care EEG in both diagnosing seizure activity and serving as a predictive biomarker of clinical trajectory. RECENT FINDINGS Initial screening EEG has been validated as a tool to predict which patients are at risk of future seizures. However, accepted definitions of seizures and nonconvulsive status epilepticus encourage a treatment trial when the diagnosis on EEG is indeterminate because of periodic or rhythmic patterns or uncertain clinical correlation. Similarly, recent data have demonstrated the diagnostic utility of intracranial EEG in increasing the yield of seizure detection. EEG has additionally been validated as a diagnostic biomarker of covert consciousness, a predictive biomarker of cerebral ischemia and impending neurologic deterioration, and a prognostic biomarker of coma recovery and status epilepticus resolution. A recent randomized trial concluded that patients allocated to continuous EEG had no difference in mortality than those undergoing intermittent EEG but could not demonstrate whether this lack of difference was because of studying heterogeneous conditions, examining a monitoring tool rather than a therapeutic approach, or examining an outcome measure (mortality) perhaps more strongly associated with early withdrawal of life-sustaining therapy than to a sustained response to pharmacotherapy. SUMMARY Seizures and status epilepticus are events of synchronous hypermetabolic activity that are either discrete and intermittent or, alternatively, continuous. Seizures and status epilepticus represent the far end of a continuum of ictal-interictal patterns that include lateralized rhythmic delta activity and periodic discharges, which not only predict future seizures but may be further classified as status epilepticus on the basis of intracranial EEG monitoring or a diagnostic trial of antiseizure medication therapy. In particularly challenging cases, neuroimaging or multimodality neuromonitoring may be a useful adjunct documenting metabolic crisis. Specialized uses of EEG as a prognostic biomarker have emerged in traumatic brain injury for predicting language function and covert consciousness, cardiac arrest for predicting coma recovery, and subarachnoid hemorrhage for predicting neurologic deterioration due to delayed cerebral ischemia.
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14
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Status Myoclonus with Post-cardiac-arrest Syndrome: Implications for Prognostication. Neurocrit Care 2021; 36:387-394. [PMID: 34595685 DOI: 10.1007/s12028-021-01344-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 08/30/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Status myoclonus (SM) after cardiac arrest (CA) may signify devastating brain injury. We hypothesized that SM correlates with severe neurologic and systemic post-cardiac-arrest syndrome (PCAS). METHODS Charts of patients admitted with CA to Mayo Clinic Saint Marys Hospital between 2005 and 2019 were retrospectively reviewed. Data included the neurologic examination, ancillary neurologic tests, and systemic markers of PCAS. Nonsustained myoclonus was clinically differentiated from SM. The cerebral performance category score at discharge was assessed; poor outcome was a cerebral performance category score > 2 prior to withdrawal of life-sustaining therapies or death. RESULTS Of 296 patients included, 276 (93.2%) had out-of-hospital arrest and 202 (68.5%) had a shockable rhythm; the mean time to return of spontaneous circulation was 32 ± 19 min. One hundred seventy-six (59.5%) patients had a poor outcome. One hundred one (34.1%) patients had myoclonus, and 74 (73.2%) had SM. Neurologic predictors of poor outcome were extensor or absent motor response to noxious stimulus (p = 0.02, odds ratio [OR] 3.8, confidence interval [CI] 1.2-12.4), SM (p = 0.01, OR 10.3, CI 1.5-205.4), and burst suppression on EEG (p = 0.01, OR 4.6, CI 1.4-17.4). Of 74 patients with SM, 73 (98.6%) had a poor outcome. A nonshockable rhythm (p < 0.001, OR 4.5, CI 2.6-7.9), respiratory arrest (p < 0.001, OR 3.5, CI 1.7-7.2), chronic kidney disease (p < 0.001, OR 3.1, CI 1.6-6.0), and a pressor requirement (p < 0.001, OR 4.4, CI 1.8-10.6) were associated with SM. No patients with SM, anoxic-ischemic magnetic resonance imaging findings, and absent electroencephalographic reactivity had a good outcome. CONCLUSIONS Sustained status myoclonus after CPR is observed in patients with other reliable indicators of severe acute brain injury and systemic PCAS. These clinical determinants should be incorporated as part of a comprehensive approach to prognostication after CA.
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15
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Young MJ, Bodien YG, Giacino JT, Fins JJ, Truog RD, Hochberg LR, Edlow BL. The neuroethics of disorders of consciousness: a brief history of evolving ideas. Brain 2021; 144:3291-3310. [PMID: 34347037 DOI: 10.1093/brain/awab290] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/11/2021] [Accepted: 07/10/2021] [Indexed: 11/12/2022] Open
Abstract
Neuroethical questions raised by recent advances in the diagnosis and treatment of disorders of consciousness are rapidly expanding, increasingly relevant, and yet underexplored. The aim of this thematic review is to provide a clinically applicable framework for understanding the current taxonomy of disorders of consciousness and to propose an approach to identifying and critically evaluating actionable neuroethical issues that are frequently encountered in research and clinical care for this vulnerable population. Increased awareness of these issues and clarity about opportunities for optimizing ethically-responsible care in this domain are especially timely given recent surges in critically ill patients with unusually prolonged disorders of consciousness associated with coronavirus disease 2019 (COVID-19) around the world. We begin with an overview of the field of neuroethics: what it is, its history and evolution in the context of biomedical ethics at large. We then explore nomenclature used in disorders of consciousness, covering categories proposed by the American Academy of Neurology, the American Congress of Rehabilitation Medicine, and the National Institute on Disability, Independent Living, and Rehabilitation Research, including definitions of terms such as coma, the vegetative state, unresponsive wakefulness syndrome, minimally conscious state, covert consciousness, and the confusional state. We discuss why these definitions matter, and why there has been such evolution in this nosology over the years, from Jennett and Plum in 1972 to the Multi-Society Task Force in 1994, the Aspen Working Group in 2002 and up until the 2018 American and 2020 European Disorders of Consciousness guidelines. We then move to a discussion of clinical aspects of disorders of consciousness, the natural history of recovery, and ethical issues that arise within the context of caring for persons with disorders of consciousness. We conclude with a discussion of key challenges associated with assessing residual consciousness in disorders of consciousness, potential solutions and future directions, including integration of crucial disability rights perspectives.
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Affiliation(s)
- Michael J Young
- Center for Neurotechnology and Neurorecovery, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114,USA.,Edmond J. Safra Center for Ethics, Harvard University, Cambridge, MA 02138, USA
| | - Yelena G Bodien
- Center for Neurotechnology and Neurorecovery, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114,USA.,Spaulding Rehabilitation Hospital, Charlestown, MA 02129, USA
| | | | - Joseph J Fins
- Division of Medical Ethics, Weill Cornell Medical College, New York, NY 10021, USA
| | - Robert D Truog
- Center for Bioethics, Harvard Medical School, Boston, MA 02115, USA
| | - Leigh R Hochberg
- Center for Neurotechnology and Neurorecovery, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114,USA.,School of Engineering and Carney Institute for Brain Science, Brown University, Providence, RI 02906, USA.,VA RR&D Center for Neurorestoration and Neurotechnology, Department of Veterans Affairs Medical Center, Providence, RI 02908, USA
| | - Brian L Edlow
- Center for Neurotechnology and Neurorecovery, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114,USA.,Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA 02129, USA
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16
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Kutkut I, Uceda D, Kumar A, Wong J, Li X, Wright KC, Straka S, Adams D, Deckard M, Kovacs R, Chen PS, Everett TH. Skin sympathetic nerve activity as a biomarker for neurologic recovery during therapeutic hypothermia for cardiac arrest. Heart Rhythm 2021; 18:1162-1170. [PMID: 33689908 PMCID: PMC8254741 DOI: 10.1016/j.hrthm.2021.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND Targeted temperature management (TTM) improves neurologic outcome after cardiac arrest. However, better neurologic prognostication is needed. OBJECTIVE The purpose of this study was to test the hypothesis that noninvasive recording of skin sympathetic nerve activity (SKNA) and its association with heart rate (HR) during TTM may serve as a biomarker of neurologic status. METHODS SKNA recordings were analyzed from 29 patients undergoing TTM. Patients were grouped based on Clinical Performance Category (CPC) score into group 1 (CPC 1-2) representing a good neurologic outcome and group 2 (CPC 3-5) representing a poor neurologic outcome. RESULTS Of the 29 study participants, 18 (62%) were deemed to have poor neurologic outcome. At all timepoints, low average skin sympathetic nerve activity (aSKNA) was associated with poor neurologic outcome (odds ratio 22.69; P = .002) and remained significant (P = .03) even when adjusting for presenting clinical factors. The changes in aSKNA and HR during warming in group 1 were significantly correlated (ρ = 0.49; P <.001), even when adjusting for corresponding temperature and mean arterial pressure measurements (P = .017), whereas this correlation was not observed in group 2. Corresponding to high aSKNA, there was increased nerve burst activity during warming in group 1 compared to group 2 (0.739 ± 0.451 vs 0.176 ± 0.231; P = .013). CONCLUSION Neurologic recovery was retrospectively associated with SKNA. Patients undergoing TTM who did not achieve neurologic recovery were associated with low SKNA and lacked a significant correlation between SKNA and HR. These preliminary results indicate that SKNA may potentially be a useful biomarker to predict neurologic status in patients undergoing TTM.
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Affiliation(s)
- Issa Kutkut
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; NewYork-Presbyterian Brooklyn Methodist Hospital, New York
| | - Domingo Uceda
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Awaneesh Kumar
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Johnson Wong
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Xiaochun Li
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Keith C Wright
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Susan Straka
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - David Adams
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Michelle Deckard
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Richard Kovacs
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Peng-Sheng Chen
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles
| | - Thomas H Everett
- Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
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Endisch C, Westhall E, Kenda M, Streitberger KJ, Kirkegaard H, Stenzel W, Storm C, Ploner CJ, Cronberg T, Friberg H, Englund E, Leithner C. Hypoxic-Ischemic Encephalopathy Evaluated by Brain Autopsy and Neuroprognostication After Cardiac Arrest. JAMA Neurol 2021; 77:1430-1439. [PMID: 32687592 DOI: 10.1001/jamaneurol.2020.2340] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Importance Neuroprognostication studies are potentially susceptible to a self-fulfilling prophecy as investigated prognostic parameters may affect withdrawal of life-sustaining therapy. Objective To compare the results of prognostic parameters after cardiac arrest (CA) with the histopathologically determined severity of hypoxic-ischemic encephalopathy (HIE) obtained from autopsy results. Design, Setting, and Participants In a retrospective, 3-center cohort study of all patients who died following cardiac arrest during their intensive care unit stay and underwent autopsy between 2003 and 2015, postmortem brain histopathologic findings were compared with post-CA brain computed tomographic imaging, electroencephalographic (EEG) findings, somatosensory-evoked potentials, and serum neuron-specific enolase levels obtained during the intensive care unit stay. Data analysis was conducted from 2015 to 2020. Main Outcomes and Measures The severity of HIE was evaluated according to the selective eosinophilic neuronal death (SEND) classification and patients were dichotomized into categories of histopathologically severe and no/mild HIE. Results Of 187 included patients, 117 were men (63%) and median age was 65 (interquartile range, 58-74) years. Severe HIE was found in 114 patients (61%) and no/mild HIE was identified in 73 patients (39%). Severe HIE was found in all 21 patients with bilaterally absent somatosensory-evoked potentials, all 15 patients with gray-white matter ratio less than 1.10 on brain computed tomographic imaging, all 9 patients with suppressed EEG, 15 of 16 patients with burst-suppression EEG, and all 29 patients with neuron-specific enolase levels greater than 67 μg/L more than 48 hours after CA without confounders. Three of 7 patients with generalized periodic discharges on suppressed background and 1 patient with burst-suppression EEG had a SEND 1 score (<30% dead neurons) in the cerebral cortex, but higher SEND scores (>30% dead neurons) in other oxygen-sensitive brain regions. Conclusions and Relevance In this study, histopathologic findings suggested severe HIE after cardiac arrest in patients with bilaterally absent cortical somatosensory-evoked potentials, gray-white matter ratio less than 1.10, highly malignant EEG, and serum neuron-specific enolase concentration greater than 67 μg/L.
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Affiliation(s)
- Christian Endisch
- AG Emergency and Critical Care Neurology, Campus Virchow Klinikum, Department of Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Erik Westhall
- Clinical Neurophysiology, Skane University Hospital, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Martin Kenda
- AG Emergency and Critical Care Neurology, Campus Virchow Klinikum, Department of Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Kaspar J Streitberger
- AG Emergency and Critical Care Neurology, Campus Virchow Klinikum, Department of Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Hans Kirkegaard
- Research Center for Emergency Medicine, Aarhus University Hospital, Aarhus University, Aarhus, Denmark
| | - Werner Stenzel
- Charité Campus Mitte, Department of Neuropathology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Christian Storm
- Cardiac Arrest Center of Excellence Berlin, Campus Virchow Klinikum, Department of Nephrology and Intensive Care Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Christoph J Ploner
- AG Emergency and Critical Care Neurology, Campus Virchow Klinikum, Department of Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Tobias Cronberg
- Neurology, Skane University Hospital, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Hans Friberg
- Intensive and Perioperative Care, Skane University Hospital, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Elisabet Englund
- Oncology and Pathology, Skane University Hospital, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Christoph Leithner
- AG Emergency and Critical Care Neurology, Campus Virchow Klinikum, Department of Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany
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Abstract
Improved understanding of post-cardiac arrest syndrome and clinical practices such as targeted temperature management have led to improved mortality in this cohort. Attention has now been placed on development of tools to aid in predicting functional outcome in comatose cardiac arrest survivors. Current practice uses a multimodal approach including physical examination, neuroimaging, and electrophysiologic data, with a primary utility in predicting poor functional outcome. These modalities remain confounded by self-fulfilling prophecy and the withdrawal of life-sustaining therapies. To date, a reliable measure to predict good functional outcome has not been established or validated, but the use of quantitative somatosensory evoked potential (SSEP) shows potential for this use. MEDLINE and EMBASE search using words "Cardiac Arrest" and "SSEP," "Somato sensory evoked potentials," "qSSEP," "quantitative SSEP," "targeted temperature management in cardiac arrest" was conducted. Relevant recent studies on targeted temperature management in cardiac arrest, plus studies on SSEP in cardiac arrest in the setting of hypothermia and without hypothermia, were included. In addition, animal studies evaluating the role of different components of SSEP in cardiac arrest were reviewed. SSEP is a specific indicator of poor outcomes in post-cardiac arrest patients but lacks sensitivity and has not clinically been established to foresee good outcomes. Novel methods of analyzing quantitative SSEP (qSSEP) signals have shown potential to predict good outcomes in animal and human studies. In addition, qSSEP has potential to track cerebral recovery and guide treatment strategy in post-cardiac arrest patients. Lying beyond the current clinical practice of dichotomized absent/present N20 peaks, qSSEP has the potential to emerge as one of the earliest predictors of good outcome in comatose post-cardiac arrest patients. Validation of qSSEP markers in prospective studies to predict good and poor outcomes in the cardiac arrest population in the setting of hypothermia could advance care in cardiac arrest. It has the prospect to guide allocation of health care resources and reduce self-fulfilling prophecy.
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Greer DM, Ritter J, Helbok R, Badjatia N, Ko SB, Guanci M, Sheth KN. Impact of Fever Prevention in Brain-Injured Patients (INTREPID): Study Protocol for a Randomized Controlled Trial. Neurocrit Care 2021; 35:577-589. [PMID: 33761119 DOI: 10.1007/s12028-021-01208-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 02/08/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Multiple studies demonstrate that fever/elevated temperature is associated with poor outcomes in patients with vascular brain injury; however, there are no conclusive studies that demonstrate that fever prevention/controlled normothermia is associated with better outcomes. The primary objective of the INTREPID (Impact of Fever Prevention in Brain-Injured Patients) trial is to test the hypothesis that fever prevention is superior to standard temperature management in patients with acute vascular brain injury. METHODS INTREPID is a prospective randomized open blinded endpoint study of fever prevention versus usual care in patients with ischemic or hemorrhagic stroke. The fever prevention intervention utilizes the Arctic Sun System and will be compared to standard care patients in whom fever may spontaneously develop. Ischemic stroke, intracerebral hemorrhage or subarachnoid hemorrhage patients will be included within disease-specific time-windows. Both awake and sedated patients will be included, and treatment is initiated immediately upon enrollment. Eligible patients are expected to require intensive care for at least 72 h post-injury, will not be deemed unlikely to survive without severe disability, and will be treated for up to 14 days, or until deemed ready for discharge from the ICU, whichever comes first. Fifty sites in the USA and worldwide will participate, with a target enrollment of 1176 patients (1000 evaluable). The target temperature is 37.0 °C. The primary efficacy outcome is the total fever burden by °C-h, defined as the area under the temperature curve above 37.9 °C. The primary secondary outcome, on which the sample size is based, is the modified Rankin Scale Score at 3 months. All efficacy analyses including the primary and key secondary endpoints will be primarily based on an intention-to-treat population. Analysis of the as-treated and per protocol populations will also be performed on the primary and key secondary endpoints as sensitivity analyses. DISCUSSION The INTREPID trial will provide the first results of the impact of a pivotal fever prevention intervention in patients with acute stroke ( www.clinicaltrials.gov ; NCT02996266; registered prospectively 05DEC2016).
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Affiliation(s)
- David M Greer
- Department of Neurology, Boston University School of Medicine, Boston Medical Center, Collamore 3, Suite 338, 72 East Concord Street, Boston, MA, USA.
| | - Jaime Ritter
- Becton Dickenson & Company, Franklin Lakes, NJ, USA
| | - Raimund Helbok
- Department of Neurology, Neurology Medical University of Innsbruck, Anichstreet 65, 6020, Innsbruck, Austria
| | - Neeraj Badjatia
- Program in Trauma, Department of Neurology, University of Maryland School of Medicine, 655 West Baltimore Street, Baltimore, MD, USA
| | - Sang-Bae Ko
- Department of Neurology, Boston University School of Medicine, Boston Medical Center, Collamore 3, Suite 338, 72 East Concord Street, Boston, MA, USA
| | - Mary Guanci
- Neurocritical Care Unit, Massachusetts General Hospital, Lunder Building 6th Floor, 55 Fruit Street, Boston, MA, USA
| | - Kevin N Sheth
- Department of Neurology, Yale University School of Medicine, 15 York Street, LCI 1003, New Haven, CT, USA
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20
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Edlow BL, Claassen J, Schiff ND, Greer DM. Recovery from disorders of consciousness: mechanisms, prognosis and emerging therapies. Nat Rev Neurol 2021; 17:135-156. [PMID: 33318675 PMCID: PMC7734616 DOI: 10.1038/s41582-020-00428-x] [Citation(s) in RCA: 238] [Impact Index Per Article: 79.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/23/2020] [Indexed: 12/16/2022]
Abstract
Substantial progress has been made over the past two decades in detecting, predicting and promoting recovery of consciousness in patients with disorders of consciousness (DoC) caused by severe brain injuries. Advanced neuroimaging and electrophysiological techniques have revealed new insights into the biological mechanisms underlying recovery of consciousness and have enabled the identification of preserved brain networks in patients who seem unresponsive, thus raising hope for more accurate diagnosis and prognosis. Emerging evidence suggests that covert consciousness, or cognitive motor dissociation (CMD), is present in up to 15-20% of patients with DoC and that detection of CMD in the intensive care unit can predict functional recovery at 1 year post injury. Although fundamental questions remain about which patients with DoC have the potential for recovery, novel pharmacological and electrophysiological therapies have shown the potential to reactivate injured neural networks and promote re-emergence of consciousness. In this Review, we focus on mechanisms of recovery from DoC in the acute and subacute-to-chronic stages, and we discuss recent progress in detecting and predicting recovery of consciousness. We also describe the developments in pharmacological and electrophysiological therapies that are creating new opportunities to improve the lives of patients with DoC.
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Affiliation(s)
- Brian L Edlow
- Center for Neurotechnology and Neurorecovery, Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA
| | - Jan Claassen
- Department of Neurology, Columbia University Medical Center, New York Presbyterian Hospital, New York, NY, USA
| | - Nicholas D Schiff
- Feil Family Brain Mind Research Institute, Weill Cornell Medical College, New York, NY, USA
| | - David M Greer
- Department of Neurology, Boston University School of Medicine, Boston, MA, USA.
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21
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McDevitt WM, Rowberry TA, Davies P, Bill PR, Notghi LM, Morris KP, Scholefield BR. The Prognostic Value of Somatosensory Evoked Potentials in Children After Cardiac Arrest: The SEPIA Study. J Clin Neurophysiol 2021; 38:30-35. [PMID: 31702709 DOI: 10.1097/wnp.0000000000000649] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
PURPOSE Absent cortical somatosensory evoked potentials (SSEPs) reliably predict poor neurologic outcome in adults after cardiac arrest (CA). However, there is less evidence to support this in children. In addition, targeted temperature management, test timing, and a lack of blinding may affect test accuracy. METHODS A single-center, prospective cohort study of pediatric (aged 24 hours to 15 years) patients in which prognostic value of SSEPs were assessed 24, 48, and 72 hours after CA. Targeted temperature management (33-34°C for 24 hours) followed by gradual rewarming to 37°C was used. Somatosensory evoked potentials were graded as present, absent, or indeterminate, and results were blinded to clinicians. Neurologic outcome was graded as "good" (score 1-3) or "poor" (4-6) using the Pediatric Cerebral Performance Category scale 30 days after CA and blinded to SSEP interpreter. RESULTS Twelve patients (median age, 12 months; interquartile range, 2-150; 92% male) had SSEPs interpreted as absent (6/12) or present (6/12) <72 hours after CA. Outcome was good in 7 of 12 patients (58%) and poor in 5 of 12 patients (42%). Absent SSEPs predicted poor outcome with 88% specificity (95% confidence interval, 53% to 98%). One patient with an absent SSEP had good outcome (Pediatric Cerebral Performance Category 3), and all patients with present SSEPs had good outcome (specificity 100%; 95% confidence interval, 51% to 100%). Absence or presence of SSEP was consistent across 24-hour (temperature = 34°C), 48-hour (t = 36°C), and 72-hour (t = 36°C) recordings after CA. CONCLUSIONS Results support SSEP utility when predicting favorable outcome; however, predictions resulting in withdrawal of life support should be made with caution and never in isolation because in this very small sample there was a false prediction of unfavorable outcome. Further prospective, blinded studies are needed and encouraged.
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Affiliation(s)
- William M McDevitt
- Department of Neurophysiology, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, United Kingdom
| | - Tracey A Rowberry
- Paediatric Intensive Care Unit, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, United Kingdom
| | - Paul Davies
- Institute of Child Health, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, United Kingdom
| | - Peter R Bill
- Department of Neurophysiology, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, United Kingdom
| | - Lesley M Notghi
- Department of Neurophysiology, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, United Kingdom
| | - Kevin P Morris
- Paediatric Intensive Care Unit, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, United Kingdom
- Institute of Applied Health Research, University of Birmingham, Birmingham, United Kingdom ; and
| | - Barnaby R Scholefield
- Paediatric Intensive Care Unit, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, United Kingdom
- Birmingham Acute Care Research Group, University of Birmingham, Birmingham, United Kingdom
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22
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Cronberg T, Greer DM, Lilja G, Moulaert V, Swindell P, Rossetti AO. Brain injury after cardiac arrest: from prognostication of comatose patients to rehabilitation. Lancet Neurol 2020; 19:611-622. [PMID: 32562686 DOI: 10.1016/s1474-4422(20)30117-4] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 03/30/2020] [Accepted: 04/01/2020] [Indexed: 02/08/2023]
Abstract
More patients are surviving cardiac arrest than ever before; however, the burden now lies with estimating neurological prognoses in a large number of patients who were initially comatose, in whom the ultimate outcome is unclear. Neurologists, neurointensivists, and clinical neurophysiologists must accurately balance the concern that overly conservative prognostication could leave patients in a severely disabled state, with the possibility that inaccurately pessimistic prognostication could lead to the withdrawal of life-sustaining treatment in patients who might otherwise have a good functional outcome. Prognostic tools have improved greatly, including electrophysiological tests, neuroimaging, and chemical biomarkers. Conclusions about the prognosis should be delayed at least 72 h after arrest to allow for the clearance of sedative drugs. Cognitive impairments, emotional problems, and fatigue are common among patients who have survived cardiac arrest, and often go unrecognised despite being related to caregiver burden and a decreased participation in society. Through simple screening, these problems can be identified, and patients can be provided with adequate information and rehabilitation.
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Affiliation(s)
- Tobias Cronberg
- Department of Clinical Sciences, Neurology, Lund University, Skane University Hospital, Lund, Sweden.
| | - David M Greer
- Department of Neurology, Boston University School of Medicine, Boston, MA, USA
| | - Gisela Lilja
- Department of Clinical Sciences, Neurology, Lund University, Skane University Hospital, Lund, Sweden
| | - Véronique Moulaert
- Department of Rehabilitation Medicine, University of Groningen, University Medical Centre Groningen, Netherlands
| | | | - Andrea O Rossetti
- Department of Clinical Neurosciences, University Hospital and University of Lausanne, Lausanne, Switzerland
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23
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Krauss GL, Geocadin RG. MRI and EEG accurately classify favorable prognosis for patients with postanoxic myoclonus: Paradigm shift. Neurology 2020; 95:149-150. [PMID: 32482843 DOI: 10.1212/wnl.0000000000009606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Gregory L Krauss
- From Neurology (G.L.K., R.G.G.) and Anesthesiology-Critical Care Medicine and Neurological Surgery (R.G.G.), Johns Hopkins School of Medicine, Baltimore, MD.
| | - Romergryko G Geocadin
- From Neurology (G.L.K., R.G.G.) and Anesthesiology-Critical Care Medicine and Neurological Surgery (R.G.G.), Johns Hopkins School of Medicine, Baltimore, MD
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24
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Forgacs PB, Devinsky O, Schiff ND. Independent Functional Outcomes after Prolonged Coma following Cardiac Arrest: A Mechanistic Hypothesis. Ann Neurol 2020; 87:618-632. [PMID: 31994749 PMCID: PMC7393600 DOI: 10.1002/ana.25690] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 01/23/2020] [Accepted: 01/23/2020] [Indexed: 01/26/2023]
Abstract
OBJECTIVE Survivors of prolonged (>2 weeks) post-cardiac arrest (CA) coma are expected to remain permanently disabled. We aimed to investigate 3 outlier patients who ultimately achieved independent functional outcomes after prolonged post-CA coma to identify electroencephalographic (EEG) markers of their recovery potential. For validation purposes, we also aimed to evaluate these markers in an independent cohort of post-CA patients. METHODS We identified 3 patients with late recovery from coma (17-37 days) following CA who recovered to functionally independent behavioral levels. We performed spectral power analyses of available EEGs during prominent burst suppression patterns (BSP) present in all 3 patients. Using identical methods, we also assessed the relationship of intraburst spectral power and outcomes in a prospectively enrolled cohort of post-CA patients. We performed chart reviews of common clinical, imaging, and EEG prognostic variables and clinical outcomes for all patients. RESULTS All 3 patients with late recovery from coma lacked evidence of overwhelming cortical injury but demonstrated prominent BSP on EEG. Spectral analyses revealed a prominent theta (~4-7Hz) feature dominating the bursts during BSP in these patients. In the prospective cohort, similar intraburst theta spectral features were evident in patients with favorable outcomes; patients with BSP and unfavorable outcomes showed either no features, transient burst features, or decreasing intraburst frequencies with time. INTERPRETATION BSP with theta (~4-7Hz) peak intraburst spectral power after CA may index a recovery potential. We discuss our results in the context of optimizing metabolic substrate availability and stimulating the corticothalamic system during recovery from prolonged post-CA coma. ANN NEUROL 2020;87:618-632.
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Affiliation(s)
- Peter B. Forgacs
- Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, New York, NY 10065, USA
- Department of Neurology, Weill Cornell Medical College, New York, NY 10065, USA
- The Rockefeller University, New York, NY 10065, USA
| | | | - Nicholas D. Schiff
- Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, New York, NY 10065, USA
- Department of Neurology, Weill Cornell Medical College, New York, NY 10065, USA
- The Rockefeller University, New York, NY 10065, USA
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25
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Hosseini M, Wilson RH, Crouzet C, Amirhekmat A, Wei KS, Akbari Y. Resuscitating the Globally Ischemic Brain: TTM and Beyond. Neurotherapeutics 2020; 17:539-562. [PMID: 32367476 PMCID: PMC7283450 DOI: 10.1007/s13311-020-00856-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Cardiac arrest (CA) afflicts ~ 550,000 people each year in the USA. A small fraction of CA sufferers survive with a majority of these survivors emerging in a comatose state. Many CA survivors suffer devastating global brain injury with some remaining indefinitely in a comatose state. The pathogenesis of global brain injury secondary to CA is complex. Mechanisms of CA-induced brain injury include ischemia, hypoxia, cytotoxicity, inflammation, and ultimately, irreversible neuronal damage. Due to this complexity, it is critical for clinicians to have access as early as possible to quantitative metrics for diagnosing injury severity, accurately predicting outcome, and informing patient care. Current recommendations involve using multiple modalities including clinical exam, electrophysiology, brain imaging, and molecular biomarkers. This multi-faceted approach is designed to improve prognostication to avoid "self-fulfilling" prophecy and early withdrawal of life-sustaining treatments. Incorporation of emerging dynamic monitoring tools such as diffuse optical technologies may provide improved diagnosis and early prognostication to better inform treatment. Currently, targeted temperature management (TTM) is the leading treatment, with the number of patients needed to treat being ~ 6 in order to improve outcome for one patient. Future avenues of treatment, which may potentially be combined with TTM, include pharmacotherapy, perfusion/oxygenation targets, and pre/postconditioning. In this review, we provide a bench to bedside approach to delineate the pathophysiology, prognostication methods, current targeted therapies, and future directions of research surrounding hypoxic-ischemic brain injury (HIBI) secondary to CA.
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Affiliation(s)
- Melika Hosseini
- Department of Neurology, School of Medicine, University of California, Irvine, USA
| | - Robert H Wilson
- Department of Neurology, School of Medicine, University of California, Irvine, USA
- Beckman Laser Institute, University of California, Irvine, USA
| | - Christian Crouzet
- Department of Neurology, School of Medicine, University of California, Irvine, USA
- Beckman Laser Institute, University of California, Irvine, USA
| | - Arya Amirhekmat
- Department of Neurology, School of Medicine, University of California, Irvine, USA
| | - Kevin S Wei
- Department of Neurology, School of Medicine, University of California, Irvine, USA
| | - Yama Akbari
- Department of Neurology, School of Medicine, University of California, Irvine, USA.
- Beckman Laser Institute, University of California, Irvine, USA.
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26
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Kim TJ, Kim JM, Lee JS, Park SH, Jeong HB, Choi JK, Kim K, Bae HM, Ko SB. Prognostication of neurological outcome after cardiac arrest using wavelet phase coherence analysis of cerebral oxygen. Resuscitation 2020; 150:41-49. [PMID: 32194164 DOI: 10.1016/j.resuscitation.2020.02.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 02/20/2020] [Accepted: 02/24/2020] [Indexed: 01/05/2023]
Abstract
BACKGROUND The prognosis for cardiac arrest (CA) is associated with the degree of cerebral ischemia. We investigated the relationship between the wavelet coherence of cerebral oxyhemoglobin (HbO2) among different channels and outcomes after CA. Moreover, we aimed to develop a prognostication method after CA. METHODS Eighty-three post-resuscitation patients were included. The HbO2 data were collected during the post-resuscitation period (median day, 1) using functional near-infrared spectroscopy. The coherence between sections of prefrontal HbO2 oscillations in five frequency intervals (I, 0.6-2 Hz; II, 0.15-0.6 Hz; III, 0.05-0.15 Hz; IV, 0.02-0.05 Hz; and V, 0.0095-0.02 Hz) were analyzed. We evaluated the outcomes using cerebral performance category (CPC) scores (good outcome, CPC ≤ 2 and poor outcome, CPC ≥ 3) at 3 months after CA. Additionally, the predictive method was developed using the biomarker and coherence value after CA. RESULTS Among the included patients, 19 patients (22.9%) had a good outcome. Poor outcome group had significantly lower phase coherence in the myogenic frequency interval III compared to good outcome group (0.36 ± 0.14 vs. 0.54 ± 0.18, P < 0.001). The predictive method using neuron-specific enolase (NSE) and interval III value demonstrated good discrimination (area under the curve 0.919; 95% confidence interval, 0.850-0.989). CONCLUSIONS The predictive method using NSE and phase coherence of HbO2 in the interval III from the vascular smooth muscle cells could be a useful tool for prognosticating after CA. This suggests that evaluating cerebral ischemia using phase coherence of HbO2 might be a helpful outcome predictor following CA.
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Affiliation(s)
- Tae Jung Kim
- Department of Neurology, Seoul National University Hospital, Seoul, Republic of Korea; Department of Critical Care Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jae-Myoung Kim
- Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Ji Sung Lee
- Clinical Research Center, Asan Medical Center, Seoul, Republic of Korea
| | - Soo-Hyun Park
- Department of Critical Care Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hae-Bong Jeong
- Department of Neurology, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jong-Kwan Choi
- Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Kyuseok Kim
- Department of Emergency Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyeon-Min Bae
- Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Sang-Bae Ko
- Department of Neurology, Seoul National University Hospital, Seoul, Republic of Korea; Department of Critical Care Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
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Agarwal S, Morris N, Der-Nigoghossian C, May T, Brodie D. The Influence of Therapeutics on Prognostication After Cardiac Arrest. Curr Treat Options Neurol 2019; 21:60. [PMID: 31768661 DOI: 10.1007/s11940-019-0602-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
PURPOSE OF REVIEW The goal of this review is to highlight the influence of therapeutic maneuvers on neuro-prognostication measures administered to comatose survivors of cardiac arrest. We focus on the effect of sedation regimens in the setting of targeted temperature management (TTM), one of the principle interventions known to improve neurological recovery after cardiac arrest. Further, we discuss the critical need for novel markers, as well as refinement of existing markers, among patients receiving extracorporeal membrane oxygenation (ECMO) in the setting of failed conventional resuscitation, known as extracorporeal cardiopulmonary resuscitation (ECPR). RECENT FINDINGS Automated pupillometry may have some advantage over standard pupillary examination for prognostication following TTM, sedation, or the use of ECMO after cardiac arrest. New serum biomarkers such as Neurofilament light chain have shown good predictive abilities and need further validation in these populations. There is a high-level uncertainty in brain death declaration protocols particularly related to apnea testing and appropriate ancillary tests in patients receiving ECMO. Both sedation and TTM alone and in combination have been shown to affect prognostic markers to varying degrees. The optimal approach to analog-sedation is unknown, and requires further study. Moreover, validation of known prognostic markers, as well as brain death declaration processes in patients receiving ECMO is warranted. Data on the effects of TTM, sedation, and ECMO on biomarkers (e.g., neuron-specific enolase) and electrophysiology measures (e.g., somatosensory-evoked potentials) is sparse. The best approach may be one customized to the individual patient, a precision-medicine approach.
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Affiliation(s)
- Sachin Agarwal
- Division of Neurocritical Care and Hospitalist Neurology, Department of Neurology, New York-Presbyterian Hospital/Columbia University Irving Medical Center, New York, NY, USA.
| | - Nicholas Morris
- Department of Neurology, Program in Trauma, University of Maryland Medical Center, Baltimore, MD, USA
| | - Caroline Der-Nigoghossian
- Clinical Pharmacy, New York-Presbyterian Hospital/Columbia University Irving Medical Center, New York, NY, USA
| | - Teresa May
- Division of Pulmonary and Critical Care Medicine, Maine Medical Center, Portland, ME, USA
| | - Daniel Brodie
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, New York-Presbyterian Hospital/Columbia University Irving Medical Center, New York, NY, USA
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Rothstein TL. SSEP retains its value as predictor of poor outcome following cardiac arrest in the era of therapeutic hypothermia. Crit Care 2019; 23:327. [PMID: 31647028 PMCID: PMC6813072 DOI: 10.1186/s13054-019-2576-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 08/19/2019] [Indexed: 01/14/2023] Open
Abstract
OBJECTIVES To re-evaluate the role of median nerve somatosensory evoked potentials (SSEPs) and bilateral loss of the N20 cortical wave as a predictor of unfavorable outcome in comatose patients following cardiac arrest (CA) in the therapeutic hypothermia (TH) era. METHODS Review the results and conclusions drawn from isolated case reports and small series of comatose patients following CA in which the bilateral absence of N20 response has been associated with recovery, and evaluate the proposal that SSEP can no longer be considered a reliable and accurate predictor of unfavorable neurologic outcome. RESULTS There are many methodological limitations in those patients reported in the literature with severe post anoxic encephalopathy who recover despite having lost their N20 cortical potential. These limitations include lack of sufficient clinical and neurologic data, severe core body hypothermia, specifics of electrophysiologic testing, technical issues such as background noise artifacts, flawed interpretations sometimes related to interobserver inconsistency, and the extreme variability in interpretation and quality of SSEP analysis among different clinicians and hospitals. CONCLUSIONS The absence of the SSEP N20 cortical wave remains one of the most reliable early prognostic tools for identifying unfavorable neurologic outcome in the evaluation of patients with severe anoxic-ischemic encephalopathy whether or not they have been treated with TH. When confounding factors are eliminated the false positive rate (FPR) approaches zero.
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Affiliation(s)
- Ted L Rothstein
- Department of Neurology, George Washington University, Washington, DC, USA.
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29
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Shimozono K, Taba M, Hanaki S. [A case of post-cardiac arrest syndrome presenting with lateralized periodic discharges evolving to a cyclic seizure pattern on electroencephalogram]. Rinsho Shinkeigaku 2019; 59:412-417. [PMID: 31243246 DOI: 10.5692/clinicalneurol.cn-001183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A 53-year-old man with hypertension experienced sudden cardiopulmonary arrest. Ambulance crews detected ventricular fibrillation that responded to defibrillation. Cardiopulmonary resuscitation resulted in return of spontaneous circulation (ROSC) after 30 minutes. At admission to our hospital, he was in a comatose state. Therapeutic hypothermia was performed for two days with other supportive care. However, despite these therapies, he remained comatose, and a diagnosis of post-cardiac arrest syndrome (PCAS) was made. On the sixth hospital day, an electroencephalogram (EEG) showed lateralized periodic discharges (LPDs) in the right occipital area evolving to electrographic seizures. Over roughly 15 minutes, this evolution process repeated 10 times, demonstrating a cyclic seizure pattern. Intravenous administration of 10 mg diazepam resulted in temporal attenuation of the high-amplitude discharges followed by LPDs re-emergence accompanying a low-amplitude fast rhythm on the background activity (LPDs+). Antiepileptic drugs administration was continued, along with supportive care. He opened his eyes on the 11th hospital day, after which his general conditions showed a good recovery. He was discharged on the 30th day without any sequelae.
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Affiliation(s)
| | - Masanao Taba
- Department of Internal Medicine, Otemachi Hospital
| | - Shojiro Hanaki
- Department of Internal Medicine, Otemachi Hospital.,Present address: Department of Pediatric Surgery, Okayama Medical Center
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30
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Seder DB. Management of Comatose Survivors of Cardiac Arrest. Continuum (Minneap Minn) 2019; 24:1732-1752. [PMID: 30516603 DOI: 10.1212/con.0000000000000669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE OF REVIEW Because the whole-body ischemia-reperfusion insult associated with cardiac arrest often results in brain injury, neurologists perform an important role in postresuscitation cardiac arrest care. This article provides guidance for the assessment and management of brain injury following cardiac arrest. RECENT FINDINGS Neurologists have many roles in postresuscitation cardiac arrest care: (1) early assessment of brain injury severity to help inform triage for invasive circulatory support or revascularization; (2) advocacy for the maintenance of a neuroprotective thermal, hemodynamic, biochemical, and metabolic milieu; (3) detection and management of seizures; (4) development of an accurate, multimodal, and conservative approach to prognostication; (5) application of shared decision-making paradigms around the likely outcomes of therapy and the goals of care; and (6) facilitation of the neurocognitive assessment of survivors. Therefore, optimal management requires early neurologist involvement in patient care, a detailed knowledge of postresuscitation syndrome and its complex interactions with prognosis, expertise in bringing difficult cases to their optimal conclusions, and a support system for survivors with cognitive deficits. SUMMARY Neurologists have a critical role in postresuscitation cardiac arrest care and are key participants in the treatment team from the time of first restoration of a perfusing heart rhythm through the establishment of rehabilitation services for survivors.
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Storm C, Behringer W, Wolfrum S, Michels G, Fink K, Kill C, Arrich J, Leithner C, Ploner C, Busch HJ. [Postcardiac arrest treatment guide]. Med Klin Intensivmed Notfmed 2019; 115:573-584. [PMID: 31197420 DOI: 10.1007/s00063-019-0591-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/28/2019] [Accepted: 05/06/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Treatment after cardiac arrest has become more complex and interdisciplinary over the last few years. Thus, the clinically active intensive and emergency care physician not only has to carry out the immediate care and acute diagnostics, but also has to prognosticate the neurological outcome. AIM The different, most important steps are presented by leading experts in the area, taking into account the interdisciplinarity and the currently valid guidelines. MATERIALS AND METHODS Attention was paid to a concise, practice-oriented presentation. RESULTS AND DISCUSSION The practical guide contains all important steps from the acute care to the neurological prognosis generation that are relevant for the clinically active intensive care physician.
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Affiliation(s)
- C Storm
- Medizinische Klinik mit Schwerpunkt Nephrologie und Internistische Intensivmedizin, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Deutschland.
| | - W Behringer
- Zentrum für Notfallmedizin, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland.
| | - S Wolfrum
- Interdisziplinäre Notaufnahme, Universitätsklinikum Lübeck, Lübeck, Deutschland
| | - G Michels
- Klinik III für Innere Medizin, Herzzentrum, Universität zu Köln, Köln, Deutschland
| | - K Fink
- Universitäts-Notfallzentrum, Universitätsklinikum Freiburg, Sir-Hans-A.-Krebs-Straße, 79106, Freiburg Breisgau, Deutschland
| | - C Kill
- Zentrum für Notfallmedizin, Universitätsklinikum Essen, Essen, Deutschland
| | - J Arrich
- Zentrum für Notfallmedizin, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland
| | - C Leithner
- Klinik für Neurologie, Charité - Universitätsmedizin Berlin, Berlin, Deutschland
| | - C Ploner
- Klinik für Neurologie, Charité - Universitätsmedizin Berlin, Berlin, Deutschland
| | - H-J Busch
- Universitäts-Notfallzentrum, Universitätsklinikum Freiburg, Sir-Hans-A.-Krebs-Straße, 79106, Freiburg Breisgau, Deutschland.
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Distinct predictive values of current neuroprognostic guidelines in post-cardiac arrest patients. Resuscitation 2019; 139:343-350. [PMID: 30951843 DOI: 10.1016/j.resuscitation.2019.03.035] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/12/2019] [Accepted: 03/22/2019] [Indexed: 12/31/2022]
Abstract
PURPOSE To assess the performance of neuroprognostic guidelines proposed by the American Academy of Neurology (AAN), European Resuscitation Council/European Society of Intensive Care Medicine (ERC/ESICM), and American Heart Association (AHA) in predicting outcomes of patients who remain unconscious after cardiac arrest. METHODS We retrospectively identified a cohort of unconscious post-cardiac arrest patients at a single tertiary care centre from 2011 to 2017 and reviewed hospital records for clinical, radiographic, electrophysiologic, and biochemical findings. Outcomes at discharge and 6 months post-arrest were abstracted and dichotomized as good (Cerebral Performance Category (CPC) scores of 1-2) versus poor (CPC 3-5). Outcomes predicted by current guidelines were compared to actual outcomes, with false positive rate (FPR) used as a measure of predictive value. RESULTS Of 226 patients, 36% survived to discharge, including 24 with good outcomes; 52% had withdrawal of life-sustaining therapies (WLST) during hospitalization. The AAN guideline yielded discharge and 6-month FPR of 8% and 15%, respectively. In contrast, the ERC/ESICM had a FPR of 0% at both discharge and 6 months. The AHA predictors had variable specificities, with diffuse hypoxic-ischaemic injury on MRI performing especially poorly (FPR 12%) at both discharge and 6 months. CONCLUSIONS Though each guideline had components that performed well, only the ERC/ESICM guideline yielded a 0% FPR. Amongst the AAN and AHA guidelines, false positives emerged more readily at 6 months, reflective of continuing recovery after discharge, even in a cohort inevitably biased by WLST. Further assessment of predictive modalities is needed to improve neuroprognostic accuracy.
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Keijzer HM, Hoedemaekers CWE, Meijer FJA, Tonino BAR, Klijn CJM, Hofmeijer J. Brain imaging in comatose survivors of cardiac arrest: Pathophysiological correlates and prognostic properties. Resuscitation 2018; 133:124-136. [PMID: 30244045 DOI: 10.1016/j.resuscitation.2018.09.012] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 09/12/2018] [Accepted: 09/14/2018] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Hypoxic-ischemic brain injury is the main cause of death and disability of comatose patients after cardiac arrest. Early and reliable prognostication is challenging. Common prognostic tools include clinical neurological examination and electrophysiological measures. Brain imaging is well established for diagnosis of focal cerebral ischemia but has so far not found worldwide application in this patient group. OBJECTIVE To review the value of Computed Tomography (CT), Magnetic Resonance Imaging (MRI), and Positron Emission Tomography (PET) for early prediction of neurological outcome of comatose survivors of cardiac arrest. METHODS A literature search was performed to identify publications on CT, MRI or PET in comatose patients after cardiac arrest. RESULTS We included evidence from 51 articles, 21 on CT, 27 on MRI, 1 on CT and MRI, and 2 on PET imaging. Studies varied regarding timing of measurements, choice of determinants, and cut-off values predicting poor outcome. Most studies were small (n = 6-398) and retrospective (60%). In general, cytotoxic oedema, defined by a grey-white matter ratio <1.10, derived from CT, or MRI-diffusion weighted imaging <650 × 10-6 mm2/s in >10% of the brain could differentiate between patients with favourable and unfavourable outcomes on a group level within 1-3 days after cardiac arrest. Advanced imaging techniques such as functional MRI or diffusion tensor imaging show promising results, but need further evaluation. CONCLUSION CT derived grey-white matter ratio and MRI based measures of diffusivity and connectivity hold promise to improve outcome prediction after cardiac arrest. Prospective validation studies in a multivariable approach are needed to determine the additional value for the individual patient.
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Affiliation(s)
- H M Keijzer
- Department of Neurology, Rijnstate Hospital, Arnhem, the Netherlands; Department of Intensive Care Medicine, Radboud University Medical Centre, Nijmegen, the Netherlands; Department of Neurology, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Medical Centre, Nijmegen, the Netherlands.
| | - C W E Hoedemaekers
- Department of Intensive Care Medicine, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - F J A Meijer
- Department of Radiology and Nuclear medicine, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - B A R Tonino
- Department of Radiology, Rijnstate Hospital Arnhem, the Netherlands
| | - C J M Klijn
- Department of Neurology, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - J Hofmeijer
- Department of Neurology, Rijnstate Hospital, Arnhem, the Netherlands; Department of Clinical Neurophysiology, University of Twente, Enschede, the Netherlands
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Abstract
PURPOSE The reliability of somatosensory evoked potentials (SSEPs) in predicting outcome in comatose survivors of cardiac arrest treated with therapeutic hypothermia (TH) has been questioned. We investigated whether the absence of cortical (N20) responses was a reliable predictor of a nonawakening in the setting of TH. METHODS A retrospective review was conducted in cardiac arrest survivors treated with TH admitted to a single tertiary care hospital from April, 2010 to March, 2013 who underwent SSEP testing at various time points after cardiac arrest. N20 responses were categorized as normal, present but abnormal, bilaterally absent, or inadequate for interpretation. Neurologic outcome was assessed at discharge by the Cerebral Performance Category Scale (CPC). RESULTS Ninety-three SSEP studies were performed in 73 patients. Fourteen patients had absent N20 responses; all had poor outcome (CPC 4-5). Eleven patients had absent N20 s during hypothermia, three of whom had follow-up SSEPs after rewarming and cortical responses remained absent. Fifty-seven patients had N20 peaks identified and had variable outcomes. Evaluation of 1 or more N20 peaks was limited or inadequate in 11.4% of SSEPs performed during the cooling because of artifact. CONCLUSIONS Somatosensory evoked potentials remain a reliable prognostic indicator in patients undergoing TH. The limited sample size of patients who had SSEP performed during TH and repeated after normothermia added to the effect of self-fulfilling prophecy limit the interpretation of the reliability of this testing when performed during cooling. Further prospective, multicenter, large scale studies correlating cortical responses in SSEPs during and after TH are warranted. Technical challenges are commonplace during TH and caution is advised in the interpretation of suboptimal recordings.
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Combination of Clinical Exam, MRI and EEG to Predict Outcome Following Cardiac Arrest and Targeted Temperature Management. Neurocrit Care 2018; 29:396-403. [DOI: 10.1007/s12028-018-0559-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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André-Obadia N, Zyss J, Gavaret M, Lefaucheur JP, Azabou E, Boulogne S, Guérit JM, McGonigal A, Merle P, Mutschler V, Naccache L, Sabourdy C, Trébuchon A, Tyvaert L, Vercueil L, Rohaut B, Delval A. Recommendations for the use of electroencephalography and evoked potentials in comatose patients. Neurophysiol Clin 2018; 48:143-169. [DOI: 10.1016/j.neucli.2018.05.038] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 05/07/2018] [Indexed: 12/21/2022] Open
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McCarthy JJ, Carr B, Sasson C, Bobrow BJ, Callaway CW, Neumar RW, Ferrer JME, Garvey JL, Ornato JP, Gonzales L, Granger CB, Kleinman ME, Bjerke C, Nichol G. Out-of-Hospital Cardiac Arrest Resuscitation Systems of Care: A Scientific Statement From the American Heart Association. Circulation 2018; 137:e645-e660. [DOI: 10.1161/cir.0000000000000557] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The American Heart Association previously recommended implementation of cardiac resuscitation systems of care that consist of interconnected community, emergency medical services, and hospital efforts to measure and improve the process of care and outcome for patients with cardiac arrest. In addition, the American Heart Association proposed a national process to develop and implement evidence-based guidelines for cardiac resuscitation systems of care. Significant experience has been gained with implementing these systems, and new evidence has accumulated. This update describes recent advances in the science of cardiac resuscitation systems and evidence of their effectiveness, as well as recent progress in dissemination and implementation throughout the United States. Emphasis is placed on evidence published since the original recommendations (ie, including and since 2010).
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Lundbye J, Greer DM, Polderman KH, Yokobori S. Temperature Management in Neurological and Neurosurgical Intensive Care Unit. Ther Hypothermia Temp Manag 2018; 8:66-69. [PMID: 29742005 DOI: 10.1089/ther.2018.29044.jjl] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Justin Lundbye
- 1 The Greater Waterbury Health Network , Waterbury, Connecticut
| | - David M Greer
- 2 Department of Neurology, Yale University , New Haven, Connecticut
| | - Kees H Polderman
- 3 Department of Critical Care Medicine, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Shoji Yokobori
- 4 Department of Emergency and Critical Care Medicine, Nippon Medical School , Tokyo, Japan
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Pati S, McClain L, Moura L, Fan Y, Westover MB. Accuracy of Limited-Montage Electroencephalography in Monitoring Postanoxic Comatose Patients. Clin EEG Neurosci 2017. [PMID: 28641453 PMCID: PMC5835011 DOI: 10.1177/1550059417715389] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Continuous EEG (cEEG) monitoring may help to identify the small percentage of adults with hypoxic-ischemic encephalopathy (HIE) who will regain consciousness if allowed sufficient time. However, the limited yield in this population has led some to question the cost-effectiveness cEEG monitoring in this population. We hypothesized that limited-montage cEEG could provide essentially the same neurophysiologic information at lower cost. In this proof of concept study, we aim to demonstrate the potentials of limited channel EEG in prognostication in postanoxic patients. METHODS We retrospectively reviewed cEEG data from cases monitored at our institution with conventional 21-channel EEG over a 6-month period. Twenty-eight cases were identified in which patients with HIE underwent cEEG for at least 24 hours. Gold-standard findings were determined by conventional visual analysis of the full cEEG, and 2 independent electroencephalographers scored the same data using only limited-montage (4-channel) views. The sensitivity and specificity of limited-montage cEEG review were compared with conventional analysis. We also compared the relative costs of conventional and limited-montage EEG. RESULTS Using 4-channel limited montage cEEG, reviewers were able to classify accurately background continuity (in 88%), background amplitude (in 81%), maximum background frequency (in 70%), periodic epileptiform discharges, including a seizure (in 92%) and sporadic discharges (in 91%). All epileptiform features were detected with greater than 90% sensitivity and specificity. Eye movement artifact seen over bifrontal electrodes gave false positive detections of periodic epileptiform discharges in 31% of cases. CONCLUSIONS Limited-channel continuous EEG monitoring can provide meaningful electrophysiological data that can be used for prognostication in postanoxic comatose patients. Limited channel EEG can be a cost-effective alternative to conventional EEG monitoring in post-anoxic comatose patients.
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Affiliation(s)
- Sandipan Pati
- 1 Department of Neurology, Massachusetts General Hospital, Boston, MA, USA.,2 Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lauren McClain
- 1 Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Lidia Moura
- 1 Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Yuan Fan
- 1 Department of Neurology, Massachusetts General Hospital, Boston, MA, USA.,3 Department of Neurology, Washington University, St Louis, MO, USA
| | - M Brandon Westover
- 1 Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
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Ong CJ, Dhand A, Diringer MN. Early Withdrawal Decision-Making in Patients with Coma After Cardiac Arrest: A Qualitative Study of Intensive Care Clinicians. Neurocrit Care 2017; 25:258-65. [PMID: 27112149 DOI: 10.1007/s12028-016-0275-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Neurologists are often asked to define prognosis in comatose patients. However, comatose patients following cardiac arrest are usually cared for by cardiologists or intensivists, and it is their approach that will influence decisions regarding withdrawal of life-sustaining interventions (WLSI). We observed that factors leading to these decisions vary across specialties and considered whether they could result in self-fulfilling prophecies and early WLSI. We conducted a hypothesis-generating qualitative study to identify factors used by non-neurologists to define prognosis in these patients and construct an explanatory model for how early WLSI might occur. METHODS This was a single-center qualitative study of intensivists caring for cardiac arrest patients with hypoxic-ischemic coma. Thirty attending physicians (n = 16) and fellows (n = 14) from cardiac (n = 8), medical (n = 6), surgical (n = 10), and neuro (n = 6) intensive care units underwent semi-structured interviews. Interview transcripts were analyzed using grounded theory techniques. RESULTS We found three components of early WLSI among non-neurointensivists: (1) development of fixed negative opinions; (2) early framing of poor clinical pictures to families; and (3) shortened windows for judging recovery potential. In contrast to neurointensivists, non-neurointensivists' negative opinions were frequently driven by patients' lack of consciousness and cardiopulmonary resuscitation circumstances. Both groups were influenced by age and comorbidities. CONCLUSIONS The results demonstrate that factors influencing prognostication differ across specialties. Some differ from those recommended by published guidelines and may lead to self-fulfilling prophecies and early WLSI. Better understanding of this framework would facilitate educational interventions to mitigate this phenomenon and its implications on patient care.
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Affiliation(s)
- Charlene J Ong
- Department of Neurology, Washington University School of Medicine, 660 South Euclid Avenue, Box 8111, St. Louis, MO, 63110, USA.
| | - Amar Dhand
- Department of Neurology, Washington University School of Medicine, 660 South Euclid Avenue, Box 8111, St. Louis, MO, 63110, USA
| | - Michael N Diringer
- Department of Neurology, Washington University School of Medicine, 660 South Euclid Avenue, Box 8111, St. Louis, MO, 63110, USA
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Silva S, Peran P, Kerhuel L, Malagurski B, Chauveau N, Bataille B, Lotterie JA, Celsis P, Aubry F, Citerio G, Jean B, Chabanne R, Perlbarg V, Velly L, Galanaud D, Vanhaudenhuyse A, Fourcade O, Laureys S, Puybasset L. Brain Gray Matter MRI Morphometry for Neuroprognostication After Cardiac Arrest. Crit Care Med 2017; 45:e763-e771. [PMID: 28272153 PMCID: PMC5515639 DOI: 10.1097/ccm.0000000000002379] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES We hypothesize that the combined use of MRI cortical thickness measurement and subcortical gray matter volumetry could provide an early and accurate in vivo assessment of the structural impact of cardiac arrest and therefore could be used for long-term neuroprognostication in this setting. DESIGN Prospective cohort study. SETTING Five Intensive Critical Care Units affiliated to the University in Toulouse (France), Paris (France), Clermont-Ferrand (France), Liège (Belgium), and Monza (Italy). PATIENTS High-resolution anatomical T1-weighted images were acquired in 126 anoxic coma patients ("learning" sample) 16 ± 8 days after cardiac arrest and 70 matched controls. An additional sample of 18 anoxic coma patients, recruited in Toulouse, was used to test predictive model generalization ("test" sample). All patients were followed up 1 year after cardiac arrest. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Cortical thickness was computed on the whole cortical ribbon, and deep gray matter volumetry was performed after automatic segmentation. Brain morphometric data were employed to create multivariate predictive models using learning machine techniques. Patients displayed significantly extensive cortical and subcortical brain volumes atrophy compared with controls. The accuracy of a predictive classifier, encompassing cortical and subcortical components, has a significant discriminative power (learning area under the curve = 0.87; test area under the curve = 0.96). The anatomical regions which volume changes were significantly related to patient's outcome were frontal cortex, posterior cingulate cortex, thalamus, putamen, pallidum, caudate, hippocampus, and brain stem. CONCLUSIONS These findings are consistent with the hypothesis of pathologic disruption of a striatopallidal-thalamo-cortical mesocircuit induced by cardiac arrest and pave the way for the use of combined brain quantitative morphometry in this setting.
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Affiliation(s)
- Stein Silva
- 1Department of Anaesthesiology and Critical Care, Critical Care Unit, University Teaching Hospital of Purpan, Place du Dr Baylac, Toulouse Cedex 9, France.2Critical Care and Anaesthesiology Department, University Teaching Hospital of Purpan, Place du Dr Baylac, Toulouse Cedex 9, France.3Toulouse NeuroImaging Center, Toulouse University, Inserm, UPS, France.4Department of Anaesthesiology and Critical Care, Critical Care Unit, Hopital Dieu Hospital, Narbonne, France.5Department of Anaesthesiology and Critical Care, School of medicine and Surgery, University Milano Bicocca and Hospital San Gerardo, Monza, Italy.6Department of Neuroradiology, University Hospital of Clermont-Ferrand, Clermont-Ferrand, France.7Department of Anaesthesiology and Critical Care, University Hospital of Clermont-Ferrand, Clermont-Ferrand, France.8Laboratoire d'Imagerie Biomédicale (UMR S 1146/UMR 7371), Université Pierre-et-Marie-Curie-Paris 06, Paris, France.9Critical Care and Anaesthesiology Department, Groupe Hospitalier Pitié-Salpétrière, APHP, Paris, France.10Department of Neuroradiology, Groupe Hospitalier Pitié-Salpétrière, APHP, Paris, France.11Cyclotron Research Center and Department of Neurology, University Hospital and University of Liège, Liège, Belgium.12Algology and Palliative Care Department, University Hospital and University of Liège, Liège, Belgium
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Kato-Negishi M, Onoe H, Ito A, Takeuchi S. Rod-Shaped Neural Units for Aligned 3D Neural Network Connection. Adv Healthc Mater 2017; 6. [PMID: 28429415 DOI: 10.1002/adhm.201700143] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/13/2017] [Indexed: 12/12/2022]
Abstract
This paper proposes neural tissue units with aligned nerve fibers (called rod-shaped neural units) that connect neural networks with aligned neurons. To make the proposed units, 3D fiber-shaped neural tissues covered with a calcium alginate hydrogel layer are prepared with a microfluidic system and are cut in an accurate and reproducible manner. These units have aligned nerve fibers inside the hydrogel layer and connectable points on both ends. By connecting the units with a poly(dimethylsiloxane) guide, 3D neural tissues can be constructed and maintained for more than two weeks of culture. In addition, neural networks can be formed between the different neural units via synaptic connections. Experimental results indicate that the proposed rod-shaped neural units are effective tools for the construction of spatially complex connections with aligned nerve fibers in vitro.
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Affiliation(s)
- Midori Kato-Negishi
- Institute of Industrial Science; The University of Tokyo; 4-6-1, Komaba Meguro-ku Tokyo 153-8505 Japan
- Exploratory Research for Advanced Technology (ERATO); Japan Science and Technology Agency (JST); 4-6-1 Komaba Meguro-ku Tokyo 153-8505 Japan
| | - Hiroaki Onoe
- Institute of Industrial Science; The University of Tokyo; 4-6-1, Komaba Meguro-ku Tokyo 153-8505 Japan
- Exploratory Research for Advanced Technology (ERATO); Japan Science and Technology Agency (JST); 4-6-1 Komaba Meguro-ku Tokyo 153-8505 Japan
| | - Akane Ito
- Institute of Industrial Science; The University of Tokyo; 4-6-1, Komaba Meguro-ku Tokyo 153-8505 Japan
| | - Shoji Takeuchi
- Institute of Industrial Science; The University of Tokyo; 4-6-1, Komaba Meguro-ku Tokyo 153-8505 Japan
- Exploratory Research for Advanced Technology (ERATO); Japan Science and Technology Agency (JST); 4-6-1 Komaba Meguro-ku Tokyo 153-8505 Japan
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Grippo A, Carrai R, Scarpino M, Spalletti M, Lanzo G, Cossu C, Peris A, Valente S, Amantini A. Neurophysiological prediction of neurological good and poor outcome in post-anoxic coma. Acta Neurol Scand 2017; 135:641-648. [PMID: 27480262 DOI: 10.1111/ane.12659] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/14/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Investigation of the utility of association between electroencephalogram (EEG) and somatosensory-evoked potentials (SEPs) for the prediction of neurological outcome in comatose patients resuscitated after cardiac arrest (CA) treated with therapeutic hypothermia, according to different recording times after CA. METHODS Glasgow Coma Scale, EEG and SEPs performed at 12, 24 and 48-72 h after CA were assessed in 200 patients. Outcome was evaluated by Cerebral Performance Category 6 months after CA. RESULTS Within 12 h after CA, grade 1 EEG predicted good outcome and bilaterally absent (BA) SEPs predicted poor outcome. Because grade 1 EEG and BA-SEPs were never found in the same patient, the recording of both EEG and SEPs allows us to correctly prognosticate a greater number of patients with respect to the use of a single test within 12 h after CA. At 48-72 h after CA, both grade 2 EEG and BA-SEPs predicted poor outcome with FPR=0.0%. When these neurophysiological patterns are both present in the same patient, they confirm and strengthen their prognostic value, but because they also occurred independently in eight patients, poor outcome is predictable in a greater number of patients. SIGNIFICANCE The combination of EEG/SEP findings allows prediction of good and poor outcome (within 12 h after CA) and of poor outcome (after 48-72 h). Recording of EEG and SEPs in the same patients allows always an increase in the number of cases correctly classified, and an increase of the reliability of prognostication in a single patient due to concordance of patterns.
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Affiliation(s)
- A. Grippo
- SODc Neurofisiopatologia; Dipartimento Neuromuscolo-Scheletrico e degli Organi di Senso; AOU Careggi; Florence Italy
- Unità di Riabilitazione Neurologica; Fondazione Don Carlo Gnocchi; IRCCS; Florence Italy
| | - R. Carrai
- SODc Neurofisiopatologia; Dipartimento Neuromuscolo-Scheletrico e degli Organi di Senso; AOU Careggi; Florence Italy
- Unità di Riabilitazione Neurologica; Fondazione Don Carlo Gnocchi; IRCCS; Florence Italy
| | - M. Scarpino
- SODc Neurofisiopatologia; Dipartimento Neuromuscolo-Scheletrico e degli Organi di Senso; AOU Careggi; Florence Italy
- Unità di Riabilitazione Neurologica; Fondazione Don Carlo Gnocchi; IRCCS; Florence Italy
| | - M. Spalletti
- SODc Neurofisiopatologia; Dipartimento Neuromuscolo-Scheletrico e degli Organi di Senso; AOU Careggi; Florence Italy
| | - G. Lanzo
- SODc Neurofisiopatologia; Dipartimento Neuromuscolo-Scheletrico e degli Organi di Senso; AOU Careggi; Florence Italy
| | - C. Cossu
- SODc Neurofisiopatologia; Dipartimento Neuromuscolo-Scheletrico e degli Organi di Senso; AOU Careggi; Florence Italy
| | - A. Peris
- Unità di terapia Intensiva; Dipartimento Neuromuscolo-Scheletrico e degli Organi di Senso; AOU Careggi; Florence Italy
| | - S. Valente
- Dipartimento Cardiotoracovascolare; AOU Careggi; Florence Italy
| | - A. Amantini
- SODc Neurofisiopatologia; Dipartimento Neuromuscolo-Scheletrico e degli Organi di Senso; AOU Careggi; Florence Italy
- Unità di Riabilitazione Neurologica; Fondazione Don Carlo Gnocchi; IRCCS; Florence Italy
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Neurologic Recovery After Cardiac Arrest: a Multifaceted Puzzle Requiring Comprehensive Coordinated Care. CURRENT TREATMENT OPTIONS IN CARDIOVASCULAR MEDICINE 2017; 19:52. [PMID: 28536893 DOI: 10.1007/s11936-017-0548-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OPINION STATEMENT Surviving cardiac arrest (CA) requires a longitudinal approach with multiple levels of responsibility, including fostering a culture of action by increasing public awareness and training, optimization of resuscitation measures including frequent updates of guidelines and their timely implementation into practice, and optimization of post-CA care. This clearly goes beyond resuscitation and targeted temperature management. Brain-directed physiologic goals should dictate the post-CA management, as accumulating evidence suggests that the degree of hypoxic brain injury is the main determinant of survival, regardless of the etiology of arrest. Early assessment of the need for further hemodynamic and electrophysiologic cardiac interventions, adjusting ventilator settings to avoid hyperoxia/hypoxia while targeting high-normal to mildly elevated PaCO2, maintaining mean arterial blood pressures >65 mmHg, evaluating for and treating seizures, maintaining euglycemia, and aggressively pursuing normothermia are key steps in reducing the bioenergetic failure that underlies secondary brain injury. Accurate neuroprognostication requires a multimodal approach with standardized assessments accounting for confounders while recognizing the importance of a delayed prognostication when there is any uncertainty regarding outcome. The concept of a highly specialized post-CA team with expertise in the management of post-CA syndrome (mindful of the brain-directed physiologic goals during the early post-resuscitation phase), TTM, and neuroprognostication, guiding the comprehensive care to the CA survivor, is likely cost-effective and should be explored by institutions that frequently care for these patients. Finally, providing tailored rehabilitation care with systematic reassessment of the needs and overall goals is key for increasing independence and improving quality-of-life in survivors, thereby also alleviating the burden on families. Emerging evidence from multicenter collaborations advances the field of resuscitation at an incredible pace, challenging previously well-established paradigms. There is no more room for "conventional wisdom" in saving the survivors of cardiac arrest.
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Forgacs PB, Frey HP, Velazquez A, Thompson S, Brodie D, Moitra V, Rabani L, Park S, Agarwal S, Falo MC, Schiff ND, Claassen J. Dynamic regimes of neocortical activity linked to corticothalamic integrity correlate with outcomes in acute anoxic brain injury after cardiac arrest. Ann Clin Transl Neurol 2017; 4:119-129. [PMID: 28168211 PMCID: PMC5288467 DOI: 10.1002/acn3.385] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 11/22/2016] [Accepted: 12/02/2016] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVE Recognition of potential for neurological recovery in patients who remain comatose after cardiac arrest is challenging and strains clinical decision making. Here, we utilize an approach that is based on physiological principles underlying recovery of consciousness and show correlation with clinical recovery after acute anoxic brain injury. METHODS A cohort study of 54 patients admitted to an Intensive Care Unit after cardiac arrest who underwent standardized bedside behavioral testing (Coma Recovery Scale - Revised [CRS-R]) during EEG monitoring. Blinded to all clinical variables, artifact-free EEG segments were selected around maximally aroused states and analyzed using a multi-taper method to assess frequency spectral content. EEG spectral features were assessed based on pre-defined categories that are linked to anterior forebrain corticothalamic integrity. Clinical outcomes were determined at the time of hospital discharge, using Cerebral Performance Categories (CPC). RESULTS Ten patients with ongoing seizures, myogenic artifacts or technical limitations obscuring recognition of underlying cortical dynamic activity were excluded from primary analysis. Of the 44 remaining patients with distinct EEG spectral features, 39 (88%) fit into our predefined categories. In these patients, spectral features corresponding to higher levels of anterior forebrain corticothalamic integrity correlated with higher levels of consciousness and favorable clinical outcome at the time of hospital discharge (P = 0.014). INTERPRETATION Predicted transitions of neocortical dynamics that indicate functional integrity of anterior forebrain corticothalamic circuitry correlate with clinical outcomes in postcardiac-arrest patients. Our results support a new biologically driven approach toward better understanding of neurological recovery after cardiac arrest.
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Affiliation(s)
- Peter B Forgacs
- Feil Family Brain and Mind Research Institute and Department of Neurology Weill Cornell Medical College New York New York; Center for Clinical and Translational Science The Rockefeller University New York New York
| | - Hans-Peter Frey
- Division of Critical Care Neurology Department of Neurology Columbia University College of Physicians and Surgeons New York New York
| | - Angela Velazquez
- Division of Critical Care Neurology Department of Neurology Columbia University College of Physicians and Surgeons New York New York
| | - Stephanie Thompson
- Division of Critical Care Neurology Department of Neurology Columbia University College of Physicians and Surgeons New York New York
| | - Daniel Brodie
- Division Medical Intensive Care Department of Medicine Columbia University College of Physicians and Surgeons New York New York
| | - Vivek Moitra
- Division Cardiothoracic and Surgical Critical Care Department of Anesthesiology Columbia University College of Physicians and Surgeons New York New York
| | - Leroy Rabani
- Cardiology Division Department of Medicine Columbia University College of Physicians and Surgeons New York New York
| | - Soojin Park
- Division of Critical Care Neurology Department of Neurology Columbia University College of Physicians and Surgeons New York New York
| | - Sachin Agarwal
- Division of Critical Care Neurology Department of Neurology Columbia University College of Physicians and Surgeons New York New York
| | - Maria Cristina Falo
- Division of Critical Care Neurology Department of Neurology Columbia University College of Physicians and Surgeons New York New York
| | - Nicholas D Schiff
- Feil Family Brain and Mind Research Institute and Department of Neurology Weill Cornell Medical College New York New York; Center for Clinical and Translational Science The Rockefeller University New York New York
| | - Jan Claassen
- Division of Critical Care Neurology Department of Neurology Columbia University College of Physicians and Surgeons New York New York
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Şerban CA, Barborică A, Roceanu AM, Mîndruță IR, Ciurea J, Zăgrean AM, Zăgrean L, Moldovan M. EEG Assessment of Consciousness Rebooting from Coma. THE PHYSICS OF THE MIND AND BRAIN DISORDERS 2017. [DOI: 10.1007/978-3-319-29674-6_16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Lee JH. Unexpected survival of sudden cardiac arrest patient with large multiple brain infarction after therapeutic hypothermia. Am J Emerg Med 2016; 34:2462.e1-2462.e3. [DOI: 10.1016/j.ajem.2016.05.066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 05/24/2016] [Indexed: 11/29/2022] Open
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Amorim E, Rittenberger JC, Zheng JJ, Westover MB, Baldwin ME, Callaway CW, Popescu A. Continuous EEG monitoring enhances multimodal outcome prediction in hypoxic-ischemic brain injury. Resuscitation 2016; 109:121-126. [PMID: 27554945 PMCID: PMC5124407 DOI: 10.1016/j.resuscitation.2016.08.012] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Revised: 07/17/2016] [Accepted: 08/03/2016] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Hypoxic brain injury is the largest contributor to disability and mortality after cardiac arrest. We aim to identify electroencephalogram (EEG) characteristics that can predict outcome on cardiac arrest patients treated with targeted temperature management (TTM). METHODS We retrospectively examined clinical, EEG, functional outcome at discharge, and in-hospital mortality for 373 adult subjects with return of spontaneous circulation after cardiac arrest. Poor outcome was defined as a Cerebral Performance Category score of 3-5. Pure suppression-burst (SB) was defined as SB not associated with status epilepticus (SE), seizures, or generalized periodic discharges. RESULTS In-hospital mortality was 68.6% (N=256). Presence of both unreactive EEG background and SE was associated with a positive predictive value (PPV) of 100% (95% confidence interval: 0.96-1) and a false-positive rate (FPR) of 0% (95% CI: 0-0.11) for poor functional outcome. A prediction model including demographics data, admission exam, presence of status epilepticus, pure SB, and lack of EEG reactivity had an area under the curve of 0.92 (95% CI: 0.87-0.95) for poor functional outcome prediction, and 0.96 (95% CI: 0.94-0.98) for in-hospital mortality. Presence of pure SB (N=87) was confounded by anesthetics use in 83.9% of the cases, and was not an independent predictor of poor functional outcome, having a FPR of 23% (95% CI: 0.19-0.28). CONCLUSIONS An unreactive EEG background and SE predicted poor functional outcome and in-hospital mortality in cardiac arrest patients undergoing TTM. Prognostic value of pure SB is confounded by use of sedative agents, and its use on prognostication decisions should be made with caution.
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Affiliation(s)
- Edilberto Amorim
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA; Department of Neurology, Brigham and Women's Hospital, Boston, MA, USA.
| | - Jon C Rittenberger
- Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Julia J Zheng
- Department of Neurosciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - M Brandon Westover
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Maria E Baldwin
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Clifton W Callaway
- Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Alexandra Popescu
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA, USA
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Becker DA, Schiff ND, Becker LB, Holmes MG, Fins JJ, Horowitz JM, Devinsky O. A major miss in prognostication after cardiac arrest: Burst suppression and brain healing. EPILEPSY & BEHAVIOR CASE REPORTS 2016; 7:1-5. [PMID: 28053858 PMCID: PMC5198796 DOI: 10.1016/j.ebcr.2016.09.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 09/12/2016] [Accepted: 09/13/2016] [Indexed: 11/18/2022]
Abstract
We report a case with therapeutic hypothermia after cardiac arrest where meaningful recovery far exceeded anticipated negative endpoints following cardiac arrest with loss of brainstem reflexes and subsequent status epilepticus. This man survived and recovered after an out-of-hospital cardiac arrest followed by a 6-week coma with absent motor responses and 5 weeks of burst suppression. Standard criteria suggested no chance of recovery. His recovery may relate to the effect of burst-suppression on EEG to rescue neurons near neuronal cell death. Further research to understand the mechanisms of therapeutic hypothermia and late restoration of neuronal functional capacity may improve prediction and aid end-of-life decisions after cardiac arrest.
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Affiliation(s)
- Danielle A. Becker
- Department of Neurology, Hospital of the University of Pennsylvania, Philadelphia, PA, United States
| | - Nicholas D. Schiff
- Department of Neurology, Weill Cornell Medical Center, New York, NY, United States
| | - Lance B. Becker
- Department of Emergency Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, United States
| | - Manisha G Holmes
- Department of Neurology, New York University Medical Center, New York, NY, United States
| | - Joseph J. Fins
- Department of Internal Medicine, Weill Cornell Medical Center, New York, NY, United States
| | - James M. Horowitz
- Division of Cardiology, Department of Internal Medicine, Weill Cornell Medical Center, New York, NY, United States
| | - Orrin Devinsky
- Department of Neurology, New York University Medical Center, New York, NY, United States
- Corresponding author at: Department of Neurology, New York University Medical Center, 223 East 34th Street, New York, NY 10016, United States.Department of NeurologyNew York University Medical Center223 East 34th StreetNew YorkNY10016United States
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