Most strokes and stroke related death & disability happened in low and middle income countries. There are differences in the clinical presentation, risk factors, and pathophysiology of different ischemic stroke patients. To plan an efficient evaluation and treatment of individual patient of ischemic stroke, the clinician should be familiar with the sub typing of ischemic stroke patients and the risk factors analysis of different etiology. Vascular imaging is necessary for classifying the patient.

This is a hospital based prospective study in Bangladsesh. Within the time frame of 2014 March to 2017 November; we analyzed 1978 patients of ischemic stroke within 10 days of symptom onset. Among them 877 patients have been selected for this study to whom brain imaging (CT/ MRI), vascular imaging (MRA, DSA), ECG and echocardiography have been done. We did sub typing according to TOAST criteria.

The mean age of patients was 60.5±11 years. Most patients (29.23%) belonged to the age group 51-60, followed by 23.67% from 61-70 age groups. 61.78% subjects were male and 38.22% were female. Within the classification of TOAST, we have found 41.87% of patients were in large artery atherosclerosis group, 23.83.% in small vessel occlusion group, 8.46% in cardiac embolism group, 14.38% in undetermined etiology group and 2% in other determined etiology. Among risk factors Diabetes Mallitus was found in 53.93%, hypertension in 61.1%, hypercholesterolemia in 26.74%, smoking 27.82%, previous stroke in 8.81% of patients.

In ischemic stroke patients, large artery atherosclerosis was the most common sub type.