As a medical professional with expertise in cardiology, I can explain the difference between ischemia and infarction.
Ischemia is a condition where there is a decrease in the blood supply to a part of the body, most commonly due to a blocked blood vessel. When blood flow is reduced, the tissues and organs do not receive enough oxygen and nutrients, which can impair their function.
Ischemia can be temporary and if blood flow is restored quickly, the affected tissue can recover without any permanent damage.
On the other hand,
infarction occurs when the
ischemia is severe and prolonged, leading to the death of tissue in the affected area due to the lack of oxygen and nutrients. An
infarct is the area of dead tissue, and this condition is irreversible. Common examples include a
heart attack (myocardial infarction) or a
stroke (cerebral infarction), where a part of the heart or brain dies, respectively.
In summary,
ischemia is a reversible condition where there is insufficient blood supply, while
infarction is the end result of severe and sustained
ischemia, resulting in irreversible tissue death.
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