Objective: To determine clinical characteristics, computer tomography brain imaging, and surgical outcome for elderly patients with chronic subdural hematoma (CSDH). Subject and method: A cross-sectional, descriptive, and retrospective study was conducted on 74 elderly patients diagnosed with CSDH and operated at 108 Military Central Hospital from June 2020 to June 2021. Result: Mean age was 75.2 years; male/female ratio was 3.93/1, the most common cause was traumatic brain injury (49%). The common presenting symptoms of CSDH were altered mental state (70.9%) and headache (68.9%), followed by cognitive impairment (54.1%), hemiparesis (21.6%), hematoma maximal thickness and midline shift were associated with a higher rate of hemiparesis in CSDH patients (p<0.05); The percentage of patients with GCS score ≥ 13 was 90.5%. The portion of unilateral on the brain CT was 78.4%. The most common densities of CSDH obtained from CT imaging was isodense (accounting for 54.0%); followed by hypodense (20.3%), high-density (17.6%), and mixed-density (8.1%); The most common complication of burr hole technique was pneumocephalus (accounting for 8.1%); recurrence of CSDH (5.4%). The Glasgow outcome scale (GOS) 4-5 was 89.7% within 3 months. Conclusion: Chronic subdural hematoma was one of the most common diseases in neurosurgery. The burr hole drainage technique was safe and effective.

Backgroud: Subarachnoid hemorrhage (SAH) is sudden bleeding into the subarachnoid space. The most common cause of spontaneous SAH is a ruptured aneurysm. Symptoms include sudden, severe headache, usually with loss or impairment of consciousness. It has a lot of dangerous complications especially re-bleeding and vasospasm which are the major causes of death and disability. Objective: To study on clinical characteristics, computed tomography brain imaging, causes and complications of subarachnoid hemorrhage. Subject and method: A cross-sectional prospective study on 202 patients who suffered from subarachnoid hemorrhage admitted to the Stroke Center, 108 Military Central Hospital from June 2018 to January 2020. Result and conclusion: The average age was 60.5 years. The most common age group was among the aged 45-64 years (71.2%). The most common symptoms of SAH was sudden severe headache (98%); neck stiff (86.1%), followed by consciousness disorders (56.9%), systolic blood pressure above 160mmHg (50.5%), focal neurologic deficits (20.3%). The Fisher classification: Grade 1 (4.5%), grade 2 (17.3%), grade 3 (19.3%), grade 4 (58.9%). The ruptured cerebral aneurysm accounted for 89.6% of the causes of SAH. The most common site of aneurysm was in the anterior communicating artery (34.8%), followed by the middle cerebral artery (21.5%) and in the internal carotid artery (16.6%). Posterior cerebral circulation accounted for 12.7%; 4.4% of patients had multiple aneurysms. The most common complications of SAH was cerebral vasospasm (26.2%) and typically occurred between 5 and 7 days after SAH, followed by rebleeding accounted for 7.9%, the most cases occurred within the first 24 hours, acute and subacute hydrocephalus (10.4%), hyponatremia (11.4%) and seizures (5.4%).