In 85% of the population this artery is dominant. What is the single most appropriate option?
a. Left ant descending artery
b. Coronary sinus
c. Circumflex artery
d. Left main stem, post descending artery
e. Right coronary artery
answer: E
dominance of circulation
right-dominant circulation: PIV and at least one posterolateral branch arise from RCA (80%)
left-dominant circulation: PIV and at least one posterolateral branch arise from LC (15%)
balanced circulation: dual supply of posteroinferior LV from RCA and LC (5%)
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