• Keita Shibahashi, Kazuhiro Sugiyama, Masahiro Kashiura, Yoshihiro Okura, Hidenori Hoda, and Yuichi Hamabe.
• Department of Emergency and Intensive Care Center, Tokyo Metropolitan Bokutoh Hospital, Sumida-ku, Tokyo, Japan. Electronic address: kshibahashi@yahoo.co.jp.
• World Neurosurg. 2017 Oct 1; 106: 185-192.

BackgroundRapid decompression with trepanation and drainage in an emergency room has been proposed as a potentially effective initial intervention for early-stage acute subdural hemorrhage; however, the actual safety and efficacy of the procedure remain unclear. The aim of this study was to evaluate the feasibility of emergency trepanation as an initial treatment for acute subdural hemorrhage.MethodsWe investigated patients with thick subdural hemorrhages who had undergone craniotomy between 2004 and 2015 in Japan using a nationwide trauma registry (the Japan Trauma Data Bank). The endpoint was survival at discharge. We compared patients who underwent trepanation in an emergency room with those who did not undergo trepanation, and adjusted for potential confounders using a multivariate logistic regression model.ResultsDuring the study period, 236,698 patients were registered in the Japan Trauma Data Bank. Of the 1391 patients who were eligible for analysis, 305 had undergone trepanation in an emergency room. The survival rate was 37.7% in patients who had undergone emergency trepanation and 59.3% in those who had not. Performing emergency trepanation was significantly associated with decreased survival even after adjusting for possible confounders (adjusted odds ratio, 0.55; 95% confidence interval, 0.40-0.76; P < 0.001).ConclusionsOur results indicate that performing trepanation in an emergency room is associated with a decreased survival rate.Copyright © 2017 Elsevier Inc. All rights reserved.

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