Background: Coronary dominance and the inferior interventricular septum are determined and supplied, respectively, by the posterior interventricular artery (PIVA). Even though the right dominance is global, we have a paucity of data from this part of the world, especially utilizing cadaveric studies. Detailed local vascular architecture is beneficial for angiographic interpretation, preoperative revascularization planning, and anatomical education. This study was done to describe the morphology of PIVA in adult cadaveric hearts in the Odisha populace. Methodology: This was a cross-sectional observational study which was conducted in the Department of Anatomy at MKCG Medical College and Hospital, Berhampur from January 2025 to June 2025. We included 200 adult formalin-preserved hearts; only those with a grossly normal heart and right and left coronary artery (LCA) arising from its respective sinus of the aorta were included. Specimens with any congenital variant affecting the distribution (for example, anomalous origin(s) of one/more of the branches and separate left anterior descending/left circumflex origins) or any significant loss/iatrogenic injury in the posterior interventricular sulcus (PIVS)/coronary vessels were excluded. The posterior interventricular artery (PIVA) was traced from its origin to termination within the PIVS. Recorded variables included the PIVA origin (right vs. LCA), number of PIVAs (single vs. double), and termination level (¼, ½, ¾ of PIVS, or apex). We present descriptive statistics with 95% confidence intervals. Results: The PIVA arose from the right coronary artery (RCA) in 89.2% and the LCA in 10.8%, among 200 hearts. A single PIVA was encountered in 80.9% and double PIVAs (both arising from RCA) in 19.1%. Codominance was not found. The levels of termination were ¼ PIVS in 8%, ½ in 45%, — in 31%, and apex in 16%. Conclusion: This study primarily represents a right-dominant coronary pattern in an Odisha cadaveric cohort. Validity and significance then must be tested in a broader, multicenter anatomical imaging correlation study to confirm duplication prevalence and assess for functional relevance.
Patro et al. (Thu,) studied this question.