Anticoagulation therapy a risk factor for the development of chronic subdural hematoma.

Objective: Chronic subdural hematoma (CSDH) is a common disease among the elderly and with increasing incidence we have chosen to focus on associations between development and recurrence of CSDH and anticoagulation and/or antiplatelet agent therapy.

Methods: We conducted a retrospective review of 239 patients undergoing surgery for CSDH over a period of six years (2006-2011). Risk factors such as age, head trauma, anticoagulant and/or antiplatelet agent therapy and co-morbidity were investigated along with gender, coagulation status, laterality, surgical method and recurrence.