• R Opsenak, P Snopko, M Hanko, M Benco, S Sivak, and B Kolarovszk.
• Bratisl Med J. 2021 Jan 1; 122 (12): 866-870.

IntroductionBilateral finding of non-acute subdural hematomas (NASH) is less common compared to unilateral occurrence. The aim of this study was to evaluate results of surgical treatment of bilaterally treated bilateral NASH.MethodsRetrospective analysis of patients, who underwent bilateral surgical evacuation of NASH (2014-2020). This study was conducted to determine the association between the incidence of postoperative complications and outcome, hematoma recurrence and selected risk factors (including volumetric parameters). Correlations between variables were assessed by using Spearman's correlation. Chi-squared test, Student's t-test (unpaired and paired) and one-way ANOVA were used for univariate analysis.ResultsOur study included 29 patients with bilateral NASH who underwent bilateral surgical hematoma evacuation. The laminar hematoma type was associated with higher hematoma recurrence rate (p=0.032) and worse clinical outcome (p=0.043). Larger PHV was significantly associated with larger PV after surgery and worse neurological outcome. Larger PHV, PHCV and PV were significantly associated with higher incidence of NASH recurrence (p=0.0008, p=0.0007 and p=0.00006).ConclusionThe laminar hematoma type and larger PHV were significant risk factors for the recurrence of bilateral NASH and worse neurological outcome. Larger PHCV and PV were significantly associated with hematoma recurrence (Tab. 7, Fig. 3, Ref. 24).

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