Early spontaneous cessation of subdural drainage after burr hole evacuation of chronic subdural hematoma and risk of recurrence

Mads Hjortdal Grønhøj, Thorbjørn Søren Rønn Jensen, Bjarni Johannsson, Kåre Fugleholm and Frantz Rom-Poulsen

PLOS ONE, 2023, vol. 18, issue 5, 1-12

Abstract: Objective: Subdural drainage reduces recurrence after evacuation of chronic subdural hematoma (CSDH). In the present study, the authors investigated the dynamics of drain production and potentially contributing factors for recurrence. Method: Patients treated with a single burr hole evacuation of CSDH between April 2019 and July 2020 were included. Patients were also participants in a randomized controlled trial. All patients included, had a passive subdural drain for exactly 24 hours. Drain production, Glasgow Coma Scale score, and degree of mobilization was recorded every hour for 24 hours. A CSDH successfully drained for 24 hours is referred to as a “case”. Patients were followed for 90 days. Primary outcome was symptomatic recurrent CSDH requiring surgery. Results: A total of 118 cases from 99 patients were included in the study. Of the 118 cases, 34 (29%) had spontaneous drain cessation within the first 0–8 hours after surgery (Group A), 32 (27%) within 9–16 hours (Group B), and 52 (44%) within 17–24 hours (Group C). Hours of production (P

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0285750

DOI: 10.1371/journal.pone.0285750

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