Poor blood flow: When arteries are narrowed, not enough oxygen gets to the tissue. This is worse when exercising a muscle ( or heart muscle), becuause its oxygen requirement are increased. At rest it might not be as much of an issue , because oxygen requirements are less.
Answered 4/14/2019
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Poor perfusion: Ischemia is caused by low or inadequate blood flow and oxygen delivery to a tissue: heart attack stroke amputation renal failure are sequellae of ischemia but mild is mild reversible means it was treated and improved.
Answered 12/9/2013
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