An Epidemiological Investigation on Patients with Non-traumatic Subarachnoid Hemorrhage from 2010 to 2020

Objective: subarachnoid hemorrhage (sah) is still considered a life-threatening medical condition with a high mortality rate, particularly in developing countries. thus, the present study aimed to investigate the angiographic findings of non-traumatic or spontaneous sah. methods: this retrospective cohort study included 642 health records of patients with non-traumatic sah over a 10-year period, from 2010 to 2020. the required data, including demographic information, aneurysm type, size, location, disease severity classification, and secondary complications, were extracted. results: the study included 642 patients, with 262 (40.8%) being male. the mean age of the participants was 54.72±13.51 years. the most prevalent type of aneurysm was saccular (89.1%), while serpentine (0.2%) and dissecting saccular (0.2%) aneurysms had the least prevalence. the most frequently involved arteries were the anterior communicating artery (acoa; 38%), internal carotid artery (ica; 27.6%), and middle cerebral artery (mca; 13.4%). there was a significant correlation between sex and aneurysms occurring at acoa and ica (p< 0.0001), and acoa – a1 (p=0.02). patient age and sex were also significantly correlated with one another (p<0.0001). there was no statistically significant correlation between sex, aneurysm size, glasgow coma scale (gcs), and modified rankin scale (mrs). conclusion: based on our findings, the presence of aneurysms at acoa, acoa – a1, and ica should be thoroughly ruled out in patients with severe headaches of sudden onset, particularly male patients of younger ages.