• Hong Joon Ahn, Sangmin Jung, Yeonho You, Jung Soo Park, Jin Hong Min, Wonjoon Jeong, Changshin Kang, Insool Yoo, Yongchul Cho, Seung Ryu, Jinwoong Lee, Seung Whan Kim, Sung Uk Cho, Se Kwang Oh, Junwan Lee, and In Ho Lee.
• Department of Emergency Medicine, Chungnam National University Hospital, 282, Munhwa-ro, Jung-gu, Daejeon, Republic of Korea.
• Resuscitation. 2020 Jun 1; 151: 50-58.

AimWe evaluated the prognostic value of serum- and cerebrospinal fluid (CSF)-ubiquitin carboxyl-terminal esterase L1 protein (UCHL1) measurements in post- post-out of hospital cardiac arrest (OHCA) patients treated with target temperature management (TTM), to predict neurologic outcome.MethodsThis was a prospective single-centre observational cohort study, conducted from April 2018 to September 2019. Serum- and CSF-UCHL1 were obtained immediately (UCHL1initial), 24 h (UCHL124), 48 h (UCHL148), and 72 h (UCHL172) after return of spontaneous circulation (ROSC). The area under the receiver operating characteristic curves (AUROC) and Delong method were used to identify cut-off values of serum- and CSF-UCHL1initial, UCHL124, UCHL148, UCHL172 for predicting neurologic outcomes.ResultsOf 38 patients enrolled, 16 comprised the poor outcome group. The AUROCs for serum- and CSF-UCHL1initial were 0.71 and 0.93 in predicting poor neurological outcomes, respectively (p = 0.01). The AUROCs for serum- and CSF-UCHL124 were 0.85 and 0.91 (p = 0.24). The AUROCs for serum- and CSF-UCHL148 were 0.90 and 0.97 (p = 0.07). The AUROCs for serum- and CSF-UCHL172 were 0.94 and 0.98 (p = 0.25).ConclusionFindings of this study demonstrate that CSF-UCHL1 measured immediately, 24, 48, and 72 h after ROSC is a valuable predictor for evaluating neurologic outcomes, whereas serum-UCHL1 measured at 24, 48, and 72 h after ROSC showed a significant performance in the prognostication of poor outcomes in post-OHCA patients treated with TTM.Copyright © 2020 Elsevier B.V. All rights reserved.

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