Analysis of Posterior Interventricular Artery in Post Mortem Hearts-A Hospital Based Study

Introduction: Coronary artery recurrently develops over periods. Symptoms may go hidden until a substantial blockage causes complications or a heart attack takes place. The particular anatomy of the myocardial blood supply varies significantly from person to person and generally, there are two prime coronary arteries, the left and the right. The coronary arteries mainly rise from the upper section of the sinus where the wall is fibroelastic and expands up to 16% in systole According to the origin of the posterior interventricular artery (PIVA) if it arises from RCA, then it is right dominance and if PIVA arises from LCA, it is left dominance. Methods: A cross-sectional study was carried out in the Department of Forensic Medicine of Dhaka Medical College and Hospital from September 2017 to January 2019. A total of 120 dead patients' hearts (N=120) were used in this study. All observations were noted in the clinical data sheet. Completed data forms were reviewed, edited, and processed for computer data entry. The data analysis was performed using Statistical Package for the Social Sciences (SPSS) Version 25.0. Result: Among the study population (N=120), one hundred hearts were male & of them, seventy males belonged to Group A (20 to 40 years), sixteen belonged to Group B (41 to 60 years), fourteen belonged to Group C (61 to 75 years) and twenty hearts were of female & of them fourteen belonged to Group A, six belonged to Group B, but no one belonged Group C. In Group A, the posterior interventricular artery arose from the right coronary artery in sixty-four males (64,91.4%), & the left coronary artery in six males (6,8.6%) and, the posterior interventricular artery arose from the right coronary artery in twelve females (12,85.7%). In Group A, the posterior interventricular artery terminated in the distal half of the posterior interventricular groove in fifty- six males (56,80.0%), in the proximal half of the posterior interventricular groove in twelve males ..........