• World Neurosurg · Aug 2019

    Surgical Treatment of Chronic Subdural Hematoma: Predicting Recurrence and Cure.

    • Sami Ridwan, Anna-Margarete Bohrer, Alexander Grote, and Matthias Simon.
    • Department of Neurosurgery, Bethel Clinic, Bielefeld, Germany. Electronic address: sami.ridwan@yahoo.de.
    • World Neurosurg. 2019 Aug 1; 128: e1010-e1023.

    BackgroundChronic subdural hematoma (CSDH) is a common neurosurgical condition, especially among elderly patients. Here we have analyzed our institutional experience with surgical management of CSDH. We aimed at identifying predictors of hematoma recurrence and cure, and the respective time course.MethodsPertinent data were collected from all 208 patients (136 males; median age, 78 years) treated for unilateral CSDH in our department from 2014 to 2016 after exclusion of cases with CSDH following previous head surgery or missing postoperative imaging. Pre- and postoperative neuroimaging studies were subjected to computer-assisted volumetric analyses. CSDH composition and anatomy were assessed using a modified Nakaguchi classification.ResultsA total of 67.8% of the patients presented with neurologic deficits, and 51.4% were at least on 1 anticoagulant agent. Burr hole trephinations were performed in 94.7%. The median residual hematoma volume was 35.0 mL (44.1 mL including air). Surgical recurrences were seen in 17.8%. The median time to repeat surgery was 17 days, and 91.9% of recurrences occurred within 60 days. Recurrence rates varied between 36.4% (separated or trabecular subtypes and postoperative CSDH volume ≥35.0 mL) and 3.7% (all other subtypes and postoperative CSDH volume <35.0 mL). A neuroimaging proven cure could be documented in an estimated 90% of cases at 145 days after first surgery.ConclusionsPostoperative CSDH volume and the Nakaguchi classification subtypes proved the most powerful predictors of recurrence, cure, and the time to recurrence and cure. Although our results demonstrate the important impact of CSDH volume, composition, and anatomy, they also show that other so far unknown factors play a significant role as well.Copyright © 2019 Elsevier Inc. All rights reserved.

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