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stunned myocardium

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myocardium /myo·car·di·um/ (-kahr´de-um) the middle and thickest layer of the heart wall, composed of cardiac muscle.
hibernating myocardium  see myocardial hibernation, under hibernation.
stunned myocardium  see myocardial stunning, under stunning.

stunned myocardium,
a condition of impaired myocardial contractile function, cellular biochemical characteristics, and microvasculature function in the absence of gross myocardial necrosis. It can last for minutes to days and is caused by ischemia that is either brief or occurs in the area immediately outside an infarct zone.

'stunned' myocardium
Transient–hrs to days in duration postischemic contraction defects that follow myocardial reperfusion in acute MI. Cf Hibernating myocardium.


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Segments that lose function as a result of an acute ischemic insult despite the restoration of normal perfusion are known as stunned myocardium.
 
 
 
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