• Yunwei Ou, Jinqian Dong, Liang Wu, Long Xu, Lei Wang, Baiyun Liu, Jingsheng Li, and Weiming Liu.
• Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China; Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; China National Clinical Research Center for Neurological Diseases, Beijing, China; Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University, Beijing, China.
• World Neurosurg. 2019 Jun 1; 126: e1412-e1420.

ObjectiveTo introduce an effective strategy to treat patients with chronic subdural hematoma (CSDH) that can achieve a low recurrence rate and good outcome.MethodsSurgical patients with CSDH from August 2011 to May 2017 in our hospital were collected retrospectively. An exhaustive drainage strategy to treat CSDH with burr-hole craniostomy was conducted. All patients were drained, and catheter was removed when natural drainage ceased or when drainage was complete using urokinase. Clinical characteristics were reviewed and analyzed. Following this strategy, predictors of recurrence requiring reoperation and outcome were analyzed.ResultsIn total, 1126 patients with CSDH who were treated with burr-hole craniostomy were included. Using the exhaustive drainage strategy, recurrence rate was only 1.9% (21/1117) with follow-up rate of 99.2%. 97.0% (1092/1117) of patients gained good outcome (modified Rankin scale scores 0-3) at 6 months after discharge. Postoperative hematoma volume (P = 0.001, B = 0.028, Exp (B) = 1.028, 95% CI 1.011-1.046), diabetes (P = 0.022, B = 1.082, Exp (B) = 2.950, 95% CI 1.169-7.440), bilateral hematoma (P = 0.011, B = 1.213, Exp (B) = 3.363, 95% CI 1.323-8.547), and complications (P = 0.013, B = 1.483, Exp (B) = 4.408, 95% CI 1.365-14.235) significantly increased the probability of recurrence. In contrast, use of urokinase (P = 0.007, B = -1.435, Exp (B) = 0.238, 95% CI 0.085-0.671) reduced recurrence. Finally, age (P = 0.026, B = 0.056, Exp (B) = 1.057, 95% CI 1.007-1.110), complications (P < 0.001, B = 1.710, Exp (B) = 5.529, 95% CI 2.104-14.531), and Bender grade (P < 0.001, B = 1.165, Exp (B) = 3.205, 95% CI 1.325-7.750) were significant predictors of outcome.ConclusionsThe exhaustive drainage strategy is safe and effective for reducing recurrence rate and achieving good outcome in patients with CSDH. This procedure merits recommendation in clinical practice.Copyright © 2019 Elsevier Inc. All rights reserved.

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