ANATOMICAL STUDY OF TERMINATION AND COURSE OF LEFT ANTERIOR DESCENDING AND LEFT CIRCUMFLEX BRANCH OF LEFT CORONARY ARTERY IN HUMEN HEART.

Dr. Ranjana Agrawal

Volume : VII, Issue : IV, April - 2018

ANATOMICAL STUDY OF TERMINATION AND COURSE OF LEFT ANTERIOR DESCENDING AND LEFT CIRCUMFLEX BRANCH OF LEFT CORONARY ARTERY IN HUMEN HEART.

Dr. Ranjana Agrawal

Abstract :

The left coronary (left main) artery arises from the left posterior sinus of Valsalva. As it passes to left and downward into atrioventricular groove it rather quickly divides into two or three major anches.Occasionally, the left coronary artery trifurcates into the LAD, left circumflex and the third(intermediate) artery.As major part of heart is supplied by these two anches of LCA that is LAD and Circumflex artery, hence present study is designed to see the course and termination pattern of these two arteries and review the available literature regarding these arteries,so that,the information regarding these arteries would be immensely useful to interventional radiologist and cardiologist to predefine the abnormalities and thus line of treatment.50 cadaveric human heart specimens (25 male and 25 female) were used by under water dissection methodand termination of LAD and CX Artery were noted.Observations regarding level of termination of Left Anterior Descending Artery (LAD) revealed that in 29 (58%), 15 (30%) male and 14 (28%) female, specimens it terminated at a point 2–5 cm up PIVS. In 15 (30%),8 (16%) male and 7 (14%)female, specimens it terminated at posterior apex. In 6 (12%),2 (4%) male and 4 (8%) female, specimens it terminated at anterior apex. in 1 (2%) specimen left circumflex artery terminate before obtuse margin. In 14 (28%), 6 (12%) male and 8 (16%) female, specimens it terminated at obtuse margin. It terminated between obtuse margin & crux in 26 (52%) specimens which includes 13 (26 %) male and 13 (26%) female specimens. In 6 (12%), 4 (8%) male and 2 (4%) female, specimens it terminated at crux and in 3 (6%) specimens it terminated beyond crux.