Hibernating myocardium
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Overview
In cardiology hibernating myocardium is a state when some segments of the myocardium exhibit abnormalities of contractile function. These abnormalities can be visualised during echocardiography or ventriculography. The wall of the affected segments is hypo-, a- or dyskinetic.
The phenomenon is highly significant clinically because it usually manifests itself in setting of chronic ischemia, which is potentially reversible by revascularisation. The regions of myocardium are still viable and can restore its function. There develops a new steady state between myocardial blood flow and myocardial function, myocardial blood flow reduced and in consequence function is reduced too.
The clinical situations where one can expect hibernating myocardium are:
- chronic stable angina pectoris
- unstable angina
- silent ischemia
- after AMI
See also
- stunned myocardium
- myocardial scarring
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
