RESUMO
Background: The objective of the present study was to check for prevalence and any kind of association existing between hypertension and ABO blood groups in the blood donors in SIMS Lahore
Patients and Methods: ABO and Rh grouping was done along with hypertensive screening on all prospective voluntary / replacement blood donors between 18-40 years of age and both sexes donating blood at SIMS Blood Bank, Lahore over a period of one month from 31st July to August 2006
Results: Out of a total of 1725 blood donors, 1673 [97%] were males and 52[3%] were females. 97% amongst males, while 94.2% amongst females were found to be Rhesus positive. The frequency of Rhesus negative groups in males and females is 3% and 5.8% respectively. Well 335 male blood donors were found to be hypertensive [250%] as opposed to 7 hypertensive female blood donors [13.5%]. The prevalence of hypertension is greatest among Rhesus positive male donors having blood group A [30.1%], followed by 18% prevalence rate in blood group B and prevalence rate about [17%] each in subjects having blood group O and AB. Rhesus negative male subjects also showed 9.8% prevalence rate
Conclusion: The study indicates that donor population is predominantly positive. The results support the concept that certain blood groups increase the individual's risk of developing hypertension