Frequency of blood group sub-type in patients with ischemic stroke at Nishtar Hospital Multan.
The objective of this study was to determine the blood groups among the patients presenting with ischemic stroke either AB blood group or O blood group is more common (frequent) among these patients irrespective of other known factors responsible for stroke. Study Design: Descriptive, Cross-sectional study. Setting: Department of Medicine, Nishtar Hospital Multan. Period: January 2015 to August 2015. Materials & Methods: We included total 292 patients (40-70 years of age), with ischemic stroke documented on CT scan brain of both gender (male and female). Blood sample of these patients were sent to the central laboratory of Nishtar hospital for blood group determination using standard techniques. Results: Mean age was 56.26 ± 8.28 years. Out of the 292 patients, 163 (55.82%) were male and 129 (44.18%). Frequency of blood group A, B, AB and O in patients with ischemic stroke was found to be 114 patients having blood group A (39.04%), 53 patients having blood group B (18.15%), 26 patients having blood group AB (8.90%) and 99 patients having blood group O (33.90%) respectively. Conclusion: Our study results concluded that there is an association between ABO blood groups and ischemic stroke, irrespective of other risk factors. Our study results have observed that individuals belonging to non-O blood groups (A, B, or AB) are at an increased risk of ischemic stroke as compared to O blood group carriers however we did not control possible impact of confounders such as diabetes, hypertension and dyslipidemia etc. Many studies proved that persons with AB blood groups are at increased of atherosclerosis but no study showed that these persons have increased risk of ischemic stroke or not.