Association of blood pressure with frequency of different blood groups and body mass index among medical students.

Abstract

Objective: To determine the association of blood pressure with frequency of different blood groups and body mass index among medical students. Study Design: Cross-Sectional study. Setting: Ameer-ud–Din Medical College /Postgraduate Medical Institute, Lahore, Pakistan. Period: May 2022 to August 2022. Material & Methods: Comprised 105 healthy both male and female medical students of 1^st year and 2^nd year MBBS. Participants were divided into groups following ABO blood grouping and body mass index criteria. Blood grouping was done by using conventional slide method. Manual auscultatory method consisting of mercury sphygmomanometer was used for estimation of blood pressure. Blood Pressure of female students was measured during follicular phase (days 7-11) of menstrual cycle to exclude role of emotional state and endocrinological factors for causing variation in blood pressure. Data was analysed by using SPSS 26. Results: There were 105 students with an overall mean age of 19.7±1.2 years. Blood group B&O found most predominant with equal prevalence of 35(33.3%). Prevalence of prehypertension among our study subjects was found 17.4%. Mean systolic, diastolic and mean arterial pressure were not found statistically significant among blood groups; p values 0.39, 0.28 and 0.25 respectively. No statistically significant difference of pre hypertensive subjects (n=18) were noted among ABO blood groups. (p=0.201). Statistical analysis showed significant association of DBP and MAP with BMI, p=0.014 and p=0.011 respectively. 38.5% of obese subjects were found prehypertensive. Highest percentage of obese subjects with pre-hypertension was noted among blood group O. Among underweight and normal weight subjects highest of pre- hypertensives were found to have blood group AB., but no significant association of pre-hypertensive subjects among different groups of BMI (p=0.184). Conclusion: B&O blood group were found predominant with equal prevalence. No statistically significant association of prehypertensive subjects were found among different ABO blood groups and different groups of BMI.