USMLE Forums - View Single Post - Increased coronary blood flow in aortic stenosis
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Old 05-22-2010
khushboo khushboo is offline
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D. Increased cardiac tissue adenosine concentration

adenosine stimulates A1 & A2 adenosine receptors...inhibit adenyl cyclase...so increases ATP...
this ATP stimulate K+ channels....hyperpolarises smooth mus. surrounding blood vessels...leading to vasodilatation
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