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Published in: Neurocritical Care 2/2022

01-04-2022 | Subdural Hematoma | Original work

Hypothermia for Patients Requiring Evacuation of Subdural Hematoma: A Multicenter Randomized Clinical Trial

Authors: Georgene W. Hergenroeder, Shoji Yokobori, Huimahn Alex Choi, Karl Schmitt, Michelle A. Detry, Lisa H. Schmitt, Anna McGlothlin, Ava M. Puccio, Jonathan Jagid, Yasuhiro Kuroda, Yukihiko Nakamura, Eiichi Suehiro, Faiz Ahmad, Kert Viele, Elisabeth A. Wilde, Stephen R. McCauley, Ryan S. Kitagawa, Nancy R. Temkin, Shelly D. Timmons, Michael N. Diringer, Pramod K. Dash, Ross Bullock, David O. Okonkwo, Donald A. Berry, Dong H. Kim

Published in: Neurocritical Care | Issue 2/2022

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Abstract

Background

Hypothermia is neuroprotective in some ischemia–reperfusion injuries. Ischemia–reperfusion injury may occur with traumatic subdural hematoma (SDH). This study aimed to determine whether early induction and maintenance of hypothermia in patients with acute SDH would lead to decreased ischemia–reperfusion injury and improve global neurologic outcome.

Methods

This international, multicenter randomized controlled trial enrolled adult patients with SDH requiring evacuation of hematoma within 6 h of injury. The intervention was controlled temperature management of hypothermia to 35 °C prior to dura opening followed by 33 °C for 48 h compared with normothermia (37 °C). Investigators randomly assigned patients at a 1:1 ratio between hypothermia and normothermia. Blinded evaluators assessed outcome using a 6-month Glasgow Outcome Scale Extended score. Investigators measured circulating glial fibrillary acidic protein and ubiquitin C-terminal hydrolase L1 levels.

Results

Independent statisticians performed an interim analysis of 31 patients to assess the predictive probability of success and the Data and Safety Monitoring Board recommended the early termination of the study because of futility. Thirty-two patients, 16 per arm, were analyzed. Favorable 6-month Glasgow Outcome Scale Extended outcomes were not statistically significantly different between hypothermia vs. normothermia groups (6 of 16, 38% vs. 4 of 16, 25%; odds ratio 1.8 [95% confidence interval 0.39 to ∞], p = .35). Plasma levels of glial fibrillary acidic protein (p = .036), but not ubiquitin C-terminal hydrolase L1 (p = .26), were lower in the patients with favorable outcome compared with those with unfavorable outcome, but differences were not identified by temperature group. Adverse events were similar between groups.

Conclusions

This trial of hypothermia after acute SDH evacuation was terminated because of a low predictive probability of meeting the study objectives. There was no statistically significant difference in functional outcome identified between temperature groups.
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Metadata
Title
Hypothermia for Patients Requiring Evacuation of Subdural Hematoma: A Multicenter Randomized Clinical Trial
Authors
Georgene W. Hergenroeder
Shoji Yokobori
Huimahn Alex Choi
Karl Schmitt
Michelle A. Detry
Lisa H. Schmitt
Anna McGlothlin
Ava M. Puccio
Jonathan Jagid
Yasuhiro Kuroda
Yukihiko Nakamura
Eiichi Suehiro
Faiz Ahmad
Kert Viele
Elisabeth A. Wilde
Stephen R. McCauley
Ryan S. Kitagawa
Nancy R. Temkin
Shelly D. Timmons
Michael N. Diringer
Pramod K. Dash
Ross Bullock
David O. Okonkwo
Donald A. Berry
Dong H. Kim
Publication date
01-04-2022
Publisher
Springer US
Published in
Neurocritical Care / Issue 2/2022
Print ISSN: 1541-6933
Electronic ISSN: 1556-0961
DOI
https://doi.org/10.1007/s12028-021-01334-w

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