Type of Article:  Original Research

Volume 8; Issue 1.3 (March 2020)

Page No.: 7346-7349

DOI: https://dx.doi.org/10.16965/ijar.2019.359


Lekshmy Vijay .V.G *1, Siva Sree Ranga 2.

*1 Assistant Professor, Department of Anatomy, Sree Mookambika Institute of Medical Sciences, Kulasekharam, Tamilnadu, India.

2 Associate Professor, Department of Anatomy, Sree Mookambika Institute of Medical Sciences, Kulasekharam, Tamilnadu, India.

Corresponding author address: Dr. Lekshmy Vijay .V.G , Assistant Professor, Department of Anatomy, Sree Mookambika Institute of Medical Sciences, Kulasekharam, Tamilnadu, India. Phone: +91-9447608909

E-Mail: nakulalekshmy@gmail.com


Background: Posterior interventricular artery (PIVA), usually a branch of right coronary artery supplies both the ventricles and the posterior 1/3rd of the interventricular septum. In some cases, PIVA can also arise from the left coronary artery. Origin of posterior interventricular artery determines the cardiac dominance. The present study is aimed to assess the cardiac dominance by assessing the number, origin and termination of the posterior interventricular artery in the human cadaveric hearts. The blood supply of the inferior myocardium depends on the dominance. Hence the awareness of these variations plays an important role in treating the inferior wall infarcts.

Materials and Methods: This study was carried out in the Department of Anatomy, Sree Mookambika Institute of Medical Sciences. A total of 112 adult human cadaveric hearts were collected and the parameters such as the number, origin and the termination of the posterior interventricular artery were noted.

Results and Discussion: In the present study, the PIVA is seen in all the hearts. Out of 112 cases, the right coronary dominance was seen in 94 cases (84%), and left coronary dominance was seen in 18 cases (16%). And the level of termination of PIVA is more, ie; 42 out of 112 specimens (37.5%) are ½ way down the PIVS.

Conclusion: Coronary artery disease is one of the major causes of death in developing countries. The advanced diagnostic and therapeutic interventional procedures necessitate the sound knowledge of the coronary artery pattern. Prognosis of inferior wall infarcts are related to coronary dominance. So the study of PIVA may be helpful in coronary artery angiography and bypass surgeries.

KEY WORDS: Coronary artery, Posterior interventricular artery, Dominance, Right dominance, Left dominance.


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Cite this article: Lekshmy Vijay. V. G, Siva Sree Ranga. A STUDY OF POSTERIOR INTERVENTRICULAR ARTERY IN ADULT HUMAN CADAVERIC HEARTS. Int J Anat Res 2020;8(1.3):7346-7349. DOI: 10.16965/ijar.2019.359