Anatomic Assessment of Coronary Ostia in Human Cadavers by Dissection Method: A Morphometric Study

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Abstract (English)

Abstract
Aim: The aim of the present study was to assess the coronary ostia in human cadavers by dissection method.
Methods: The present study was conducted on 60 hearts of human cadavers fixed with 10% formalin, collected
from the Department of Anatomy, Nalanda Medical College, Patna, Bihar, India.
Results: It was observed that the mean diameter of left coronary ostium was greater than right coronary ostium
which was statistically significant (p-value<0.0001). There was decrease in diameter from coronary ostia to the
roots of coronary arteries which was statistically significant (p-value=0.050). Decrease in diameter from left
coronary ostium to root was 0.58 mm and right coronary ostium to root was 0.45 mm. Number of coronary ostia
in anterior aortic sinus was single ostium in 50 (83.33%) specimens, double ostia in 6 (10%) specimens, triple
ostia in two (3.33%) specimen and also absence of ostium in two specimens. Number of coronary ostia in left
posterior aortic sinus was single ostium in 57 (95%) specimens and double ostia in 3 (5%) specimens.
Conclusion: The advances made in coronary artery bypass surgeries and modern methods of myocardial
revascularisation makes it necessary for thorough complete knowledge of coronary ostia. Understanding
variations in morphology of coronary ostia should be sought before surgical interventions. The present anatomical
data may help the cardiac surgeons to modify their surgical reconstruction of the aortic root in order to achieve
satisfactory recovery