Publication:

Blood group and its relationship with bleeding time and clotting time- an observational study among the 1st MBBS students of Gauhati medical college, Guwahati

Background Blood group and its relation to bleeding time (BT) and clotting time (CT) is important in conditions like epistaxis, thrombosis, and surgery. Earlier studies depicted O group having prolonged BT and CT. The aim of this study was to assess the relationship of BT and CT with ABO groups.

Methods This cross-sectional study was conducted in the department of physiology, Gauhati medical college. The study included 154 students. Blood grouping was determined with the standard antiserum; BT and CT were estimated by the duke method and slide method, respectively. Blood group and its relation to BT, CT were analyzed by Chi-square analysis.

Results Blood group O (42.2%) was predominant in both genders followed by B (31.8%), A (21%), AB (4.5%). CT was found to be more than 6 minutes in group O (31.57%) followed by group AB (26.31%), A and B (21.05%). The difference was statistically significant (p = 0.02). BT was found to be more than 4 minutes in group O (82.35%) followed by A (11.76%), B (5.88%), and AB (0%). That was statistically significant (p = 0.01). CT was more than 6 minutes in 57.89% in females as compared to 42.10% in males, variation was statistically significant (p = 0.01). BT was more than 4 minutes in 58.82% females as compared to 41.17% in males. The variation was statistically significant (p = 0.03).

Conclusions In present study blood group O was more common followed by B, A, and AB. CT and BT were prolonged in O group. BT and CT were more in females than males.