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[Chronic ischemic left ventricular dysfunction: myocardial hibernation?].

J L Monin¹, A M Duval, J Garot

¹Fédération de cardiologie, cardiologie 2, CHU Henri-Mondor, Créteil.

Archives Des Maladies Du Coeur Et Des Vaisseaux

|September 27, 2000

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Hibernating myocardium, a potentially reversible heart condition, can be identified using various imaging techniques. Revascularization in patients with viable myocardium improves long-term quality of life and reduces mortality.

Area of Science:

Cardiology
Medical Imaging
Physiology

Context:

Hibernating myocardium refers to chronic ischemic left ventricular dysfunction, traditionally linked to hypoperfusion.
This concept is debated, with some suggesting reduced coronary reserve and ischemia/stunning are primary causes of dysfunction.

Purpose:

To review the diagnostic techniques for detecting hibernating myocardium.
To evaluate the effectiveness of revascularization in patients with viable myocardium.

Summary:

Hibernating myocardium is potentially reversible left ventricular dysfunction caused by chronic ischemia.
Imaging techniques like PET, myocardial scintigraphy, and dobutamine echocardiography detect myocardial viability.
Dobutamine echocardiography shows higher specificity and positive predictive value compared to isotopic methods.

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Impact:

Coronary revascularization in patients with positive viability tests improves long-term quality of life.
Revascularization is associated with reduced mortality in patients diagnosed with hibernating myocardium.