Frequency of Cerebral Aneurysm in patients with subarachnoid hemorrhage on CT Cerebral Angiography.

Objective: To determine the frequency of cerebral aneurysm in patients with subarachnoid haemorrhage on CT cerebral angiography. Methods: This prospective cross-sectional study was conducted at Department of Radiology, JPMC, Karachi from 5th June 2022 to 30th January 2023. Total 176 patients with subarachnoid haemorrhage irrespective of gender were selected. CT angiography of cerebral vessels was performed. Cerebral aneurysm was noted as per operational definition and recorded. Results: Age range was from 18 to 60 years. Mean age was 39.516±6.77 years, Mean BMI 29.630±3.08 Kg/m2. and mean duration of symptoms was 7.721±2.40 days. Male patients were 80.1% and females were 19.9%. Cerebral aneurysm was observed in 91.4% female and 78.7% male patients. Aneurysmal percentage was slightly higher in younger (18-40 years) age group (84.2% vs 80.4%) as compared to older (40-60) age group but statistically not significant. Although total percentage of female was quite less 19.9% (n=35 vs n=141 male), in this lesser female percentage, aneurysmal detection was higher as compared to male gender (91.4% vs 78.7%). Distribution of aneurysms according to vessel involved was; 28.7% along anterior communicating artery, 28.3% related to middle cerebral artery and, 22.9% were along posterior communicating vessel. Rest was distributed among other vessels including tip of basilar artery. Conclusion: In Our study aneurysms was seen 81.3% in patients of subarachnoid hemorrhage having CT angiography at our center in Karachi Pakistan. [ABSTRACT FROM AUTHOR]