ANGIOGRAPHIC STUDY OF ORIGIN OF SINOATRIAL NODAL AND ATRIOVENTRICULAR NODAL ARTERY IN SOUTH INDIAN POPULATION

DR. BALAMURUGAN T; DR. G. RAVI SHANKAR; DR. S. NAMBIRAJAN; DR. JEFF REDLEENE.S

Volume : VIII, Issue : VI, June - 2019

ANGIOGRAPHIC STUDY OF ORIGIN OF SINOATRIAL NODAL AND ATRIOVENTRICULAR NODAL ARTERY IN SOUTH INDIAN POPULATION

Dr. Balamurugan T, Dr. G. Ravi Shankar, Dr. S. Nambirajan, Dr. Jeff Redleene. S

Abstract :

BACKGROUND: This study is done to check the arterial supply of the conducting system and to correlate it with the dominance of the coronary arteries and it will be helpful for cardiac surgeons. MATERIALS & METHODS: This is a prospective observational study done in the Institute of Cardiology, Madras medical college, Rajiv Gandhi Government General Hospital, Chennai over a period of six months from December 2018 – April 2019. A total of 500 consecutive patients who underwent coronary angiogram for angina, myocardial infarction and TMT positive were included in the study. Dominance and origin of SA nodal artery and AV nodal artery were studied. RESULTS: Origin of SA nodal artery from RCA is seen in 61.2% of patients in our study, LCA in 36.4% of patients and from both RCA and LCA in 2.4% of the patients. Origin of AV nodal artery from RCA is seen in 76.4% of patients in our study and LCA in 23.6% of patients. SA nodal origin in right dominant presentation from RCA in 26% and in left dominant system from RCA in 12.8% patients. Origin of SA and AV nodal artery from RCA is seen in 41.2% patients. CONCLUSION: Anatomy of vessels are helpful for cardiac surgeons and it varies geographically