Key result
In an anatomical study of 50 human cadaveric hearts, right coronary dominance was observed in 76%, left dominance in 20%, and balanced dominance in 4%.
Cross-Sectional (n=50)
No
In a study of 50 human cadaveric hearts, right coronary dominance was the most common anatomical variant (76%), followed by left (20%) and balanced (4%) dominance.
BACKGROUND arteries supply oxygen rich blood to entire heart muscle. They divide and their branches encircle the heart to cover surface with a lacy network resembling a crown. The artery supplying the Posterior Descending artery (PDA) determines the dominance. A right dominant coronary circulation is one in which the PDA is a terminal branch of Right Coronary Artery (RCA) and in left dominance, PDA arises from left coronary artery. Left dominant hearts are at an increased risk of coronary diseases. Therefore, the present study aims at studying the coronary dominance in hearts obtained from adult and cadavers. AND METHODS 50 human cadaveric hearts were collected and meticulously dissected. All the results were noted and photographs taken. This was carried out in the Department of Anatomy of Tezpur Medical College, Sonitpur, Assam, on 50 heart specimens. Out 50 hearts, 20 hearts were from perinatal cadavers that is between 28 weeks of gestation to 7 days after birth and the 30 hearts were from adult cadavers. Out of the total hearts, 31 hearts were male and 19 hearts were female. The heart specimens were collected from the Department of Obstetrics and Gynaecology. The adult hearts were collected the cadavers received in the Department of Anatomy and also from the unclaimed bodies received in the Department of Medicine, Tezpur Medical College and Hospital. dominance was noted in 76% of hearts, left dominance was noted in 20% hearts and 4% of hearts revealed balanced . Right dominance was found more common than left dominance in both male and female. Percentage of left was noted more in males than females. The results of the present study were compared with similar previous studies discussed. knowledge of right or left coronary dominance is important from the point of view that left coronary artery dominant people more susceptible for coronary heart disease. Therefore, preoperative information about coronary arterial anatomy and will be helpful for the cardiothoracic surgeons in planning necessary surgical techniques to reduce coronary diseases.
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Rashmi Rekha Bordoloi (2016) conducted a cross-sectional in Coronary artery dominance (n=50). Coronary artery dominance was evaluated on Coronary dominance pattern. In an anatomical study of 50 human cadaveric hearts, right coronary dominance was observed in 76%, left dominance in 20%, and balanced dominance in 4%.
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