diastolic dysfunction

Diastolic dysfunction is an abnormal function of the heart during its relaxation phase that compromises the heart’s ability to relax and fill. Filling of the heart’s lower chambers (ventricles) is impaired because the chamber is stiff due to thickening or cardiomyopathy. It may also be due to stiffening of the sac around the heart. Even though the ability to contract may be preserved, diastolic pressure is elevated and cardiac output reduced.

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