karusmle
Forum Guru
Topics: 295
Posts: 1,000
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can somebody explain the difference between right dominant coronary circulation from the left dominant coronary circulation???i m hearing this for the first time ......and in Q bank there is a terminolgy posterior descending artey from the coronary circulation , is this the other name for posterior interventricular artery??????
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| aonty
Forum Senior
Topics: 21
Posts: 119
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hey karusmle
right circulation is called dominant circulation when the posterior interventricular artery arises from the right coronary artery
and vice versa
posterior descending aretry =posterior interventricular artery
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| DrMary
Forum Elite
Topics: 30
Posts: 98
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OOPS.....SORRY! HERE'S THE CORRECTED ONE:
RIGHT dominant coronary circulation is when the Post. descending artery (PDA) arises from the Right Coronary Artery (RCA). Common in 80% of people.
LEFT dominant coronary circulation is when th LEFT CIRCUMFLEX ART. arises from the Post descending art...in only 20% of people.
If you have blockage of the LEFT dominant circ., it would affect the blood supply to the post 1/2 of the interventricular septum (supplied by the PDA) and the LEFT ventricular wall (supplied by the L circumflex art)
Blockage of RIGHT dominant circulation...affect 1/2 of interventricular septum and areas supplied by the RCA (Right ventricle, SA and AV node, posterior & inferior wall of the Left ventricle)
Hope this helps....
Edited by DrMary on 11/08/05 - 08:06 PM
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| karusmle
Forum Guru
Topics: 295
Posts: 1,000
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thank u guys for ur help,Dr.mary i think u typed it wrong , for post descending artery arising from right coronary artey u typed it as right coronary artey arising from post descending artey , anyway thanks .................
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