Abstract
Objective: Chronic subdural hematoma is the most common intracranial hematoma effecting especially elderly population. There is a substantial recurrence rate after evacuation by burr-hole surgery. In this study, we aimed to determine predictors associated with recurrence. Methods: We retrospectively analyzed 136 consecutive patients with chronic subdural hematoma. Clinical parameters, anamnesis, previous anticoagulant drug use have been evaluated with univariate and multivariate analyses to determine predictors associated with recurrence Results: At least a second surgery was needed in 27 patients of 136. We showed that recurrence rate was significantly higher in patients with bilateral subdural hematoma, after univariate and multivariate analyses (37% versus 11%). We did not find any significant relationship between recurrence and age, gender, hypertension and/or diabetes mellitus in anamnesis, preceding head trauma and time interval, anticoagulant and/or antiaggregan therapy. Conclusion: After analysis of all evaluated factors, only bilateral hematoma was found correlated with high recurrence rate, probably due to previous brain atrophy or existing coagulopathy.
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