MEDICINE
CARDIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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most people are left-dominance
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the artery that supplies the posterior descending artery (PDA) and ramus intermediate (RI) determines the coronary dominance
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if the right coronary artery supply the posterior descending artery (PDA) and posterolateral branch (PLVB) it is codominance
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most people are right-dominance
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Detailed explanation-1: -Coronary arterial dominance is defined by the vessel which gives rise to the posterior descending artery (PDA), which supplies the myocardium of the inferior third of the interventricular septum. Most hearts (80-85%) are right dominant where the PDA is supplied by the right coronary artery (RCA).
Detailed explanation-2: -Coronary Dominance Most hearts are right dominant (60%) where the PDA is supplied by the RCA. However, up to 20% of hearts may be left dominant, where the PDA is supplied by the LAD or LCx, or codominant, where a single or duplicated PDA is supplied by branches of both the RCA and LAD/LCx (20%).
Detailed explanation-3: -The dominance of coronary circulation is determined by the type of arteries that supply the posterior and inferior wall of the left ventricle. The artery that supplies the posterior descending artery (PDA) and the posterolateral artery (PLA) determines the coronary dominance.