Cardiomyopathy

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cardiomyopathy

[¦kärd·ē·ō‚mī′äp·ə·thē]
(medicine)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Cardiomyopathy

 

(myocardosis), a term often applied to a broad group of heart diseases; specifically, noninflammatory lesions of the heart muscle (myocardium) resulting from a disturbance in myocardial metabolism. Among the causes of cardiomyopathy are nutritional disorders (alimentary dystrophy and avitaminosis, for example); protein metabolism disorders in hepatic or renal insufficiency and podagra; disturbances of carbohydrate metabolism (diabetes mellitus) and electrolyte metabolism; and endocrine disorders such as those associated with thyrotoxicosis and with hypoxia in impairment of coronary circulation, anemia, and mountain sickness. Myocardosis may also be caused by overstraining the myocardium and by exogenous poisons, such as carbon monoxide and alcohol.

In many cases the patient has no specific symptoms in the early stages; however, there may be shortness of breath and disagreeable sensations in the heart. Cardiomyopathy is manifested by dull, distant heart sounds, electrocardiographic changes, systolic murmur, extrasystole, and, more rarely, other types of arrhythmia. Severe cardiomyopathy weakens the heart contractions and may cause cardiac insufficiency. The changes associated with cardiomyopathy are usually reversible and disappear with the elimination of the underlying disease.

The cure includes treatment of the underlying disease and administration of agents that improve metabolic processes in the myocardium.

REFERENCE

Kedrov, A. A. Bolezni myshtsy serdtsa. Leningrad, 1963.

N. R. PALEEV

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Infantile restrictive cardiomyopathy resulting from a mutation in the cardiac troponin T gene.
Joyal et al., "The efficacy of brain natriuretic peptide levels in differentiating constrictive pericarditis from restrictive cardiomyopathy," Journal of the American College of Cardiology, vol.
Arrhythmias, valvulopathy, and restrictive cardiomyopathy are common complications.
Constrictive Pericarditis (CP) is characterised by scarring and loss of elasticity of the pericardium, resulting in external impedance of normal diastolic cardiac filling.1 Restrictive Cardiomyopathy (RC) is defined as a heart muscle disease that results in impaired ventricular filling, with normal or decreased diastolic volume of either or both ventricles.2 Differentiating between Constrictive Pericarditis and Restrictive Cardiomyopathy is a difficult clinical challenge that requires multiple diagnostic modalities, using haemodynamics, imaging and biopsy studies.
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