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9 Cards in this Set
- Front
- Back
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coronary flow is mostly controlled by:
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local metabolites, e.g. adenosine
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comparing the 3 heart layers, the endocardium receives bloodflow mostly during ____
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diastole
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ischemic heart damage hurts which heart layer most?
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endocardium
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pressure work (aortic stenosis) requires ______ oxygen than volume work (increased preload)
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more
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what nutrients does the heart use, by % of total
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60% FFA/TG, 40% gluclose. rarely uses amino acids
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during periods of increased demand on the heart, regarding the Fick equation (V O2 = flow x extraction), how will the heart adjust?
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flow must increase, as extraction is nearly maxed-out (75%) at all times
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3 "levels" of ischemia from class
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1. hibernation - reduce flow induces reduced FXN
2. stunning - short duration of occlusion, reversible. 3. necrosis - ischemia > 45 min, irreversible |
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angina pectoris represents which stage of heart ischemia?
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myocardial stunning
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list the three types of ventricular aneurysms from class (though i think they are wrong)
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dyskinetic - aneurysm moves opposite the contracting ventricle*
akinetic - aneurysm part doesn't move paradoxical - moves in opposite direction , "ballooning" |
