RESUMO
Background: Many reports have appeared in recent years showing an association between blood groups and Myocardial Infarction. Clinical studies have shown a significant association between MI and blood group B. Objective: To investigate correlation of ABO blood groups with risk of MI. Methods: The present cross sectional study analyzed ABO blood group among total 400 subjects of any age from the local population of Jodhpur city from July to December 2011.Among them 200 subjects were normal healthy(135 male and 65 female) students of Dr. S.N. Medical College, Jodhpur and another 200(135male, 65female) were MI patients admitted in the CCU of Mathura Das Memorial(MDM) Hospital, Jodhpur. ABO blood group of all subjects were determined by slide agglutination method. Risk of MI was expressed by risk ratio. Data were analyzed by one sample chi square test. Results: The results obtained in this study showed that the prevalence of MI in blood group B is significantly higher than in all other ABO blood groups. Conclusion: The results may conclude that there is a significant association between MI and blood group B. So this study reveals MI risk is associated with the blood group B.