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Circulation, Vol 56, 863-869, Copyright © 1977 by American Heart Association

ARTICLES

Cardiac size and function in acromegaly

JB Martins, RE Kerber, BM Sherman, ML Marcus and JC Ehrhardt

Sixteen acromegalic patients underwent echocardiography, phonocardiography, stress electrocardiography with Thallium perfusion scanning and gated radioisotope left ventricular angiocardiograms. Abnormalities consisting of increased echo left ventricular mass index, low velocity of circumferential fiber shortening or elevated pre- ejection period to left ventricular ejection time ratio were found in six patients with coexistent hypertension or coronary disease. Concentric left ventricular hypertrophy was also found in three patients with no known etiology other than acromegaly of greater than thirteen years' duration or with fasting growth hormone concentrations greater than 100 ng/ml. One of these three also had left ventricular dysfunction. Neither hypertrophy nor ventricular dysfunction was found in other acromegalics with shorter duration of disease or lower growth hormone concentrations or with normal growth hormone concentrations after therapy. A high prevalence of coronary artery and hypertensive heart disease is associated with acromegaly. A few patients with acromegaly have a specific, potentially reversible cardiomyopathy probably related to prolonged acromegaly or very high growth hormone concentrations.

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