[Surgical Outcome of Acute and Subacute Subdural Hematoma with Endoscopic Surgery].

Acute subdural hematoma (ASDH) and subacute subdural hematoma(SASDH)evacuations are commonly performed through a large craniotomy or with external decompression surgery to avoid secondary brain injury. In the field of head trauma, minimally invasive surgeries performed with neuroendoscopy were recently reported. We report 12 patients with ASDH( n=9) and SASDH (n=3)w ho underwent endoscopic hematoma evacuation via a small craniotomy between November 2013 and May 2015. All patients were over 65 years of age(mean age, 78.8 years[range, 65-91 years]) and had subdural hematomas without extensive contusion. The mean preoperative Glasgow Coma Scale(GCS)score was 8.75 (range, 4-13). In three patients, we observed the bleeding point and substantially coagulated it. Decompression in all patients was adequate after surgery. Patients with a preoperative GCS score of 4-6 showed poor outcomes, whereas those with a score >9 showed relatively good outcomes. We performed the operations safely in patients who were on antithrombotic therapy or had a systemic bleeding tendency pre-injury. Endoscopic hematoma evacuation via a small craniotomy is a safe and minimally invasive procedure in patients older than 65 years with comorbidities.