View source for CORONARY ARTERIES-CONDITIONS WITH NO OR LOW FLOW

===== [[Summary Article|'''SUMMARY''']] =====
1. No flow occurs during systole in the<i>subendocardial portion of LV, </i>thus is prone to ischemia &amp; most common site for MI.
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<br/>2. Since diastole is shorter in <i>tachycardia,</i> this leads to reduction in coronary flow.
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<br/>3. Decreased flow in <i>aortic stenosis</i> as LV pressure is higher, thus the coronary vessels are more compressed. The myocardium also requires more O2. 
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<br/>4. Rise in venous pressure in <i>CCF </i>reduces coronary flow because it decreases effective coronary perfusion pressure.


==Reference(s)==
Barrett, K.E., Barman, S.M., Brooks, H.L., X, J. and Ganong, W.F. (2019). Ganong’s review of medical physiology. 26th ed. New York: Mcgraw-Hill Education 

[[Category:Coronary Arteries]]
[[Category:Physiology]]