Abstract
Twenty-seven patients with acromegaly had echocardiograms performed to delineate the ventricular septum, left ventricular posterior wall and mitral valve. Left ventricular function was assessed by calculating the systolic internal dimensional shortening of the left ventricle. Six patients met the criteria for asymmetric septal hypertrophy and eight had concentric left ventricular hypertrophy. The remaining 13 patients were categorized as “normal,” although six had septal measurements > 11 mm. The group with asymmetric septal hypertrophy had significantly greater percentage of internal dimensional shortening during systole than either the normal group (p < 0.05) or the group with left ventricular hypertrophy (p < 0.01). Initial mean growth hormone levels were considerably higher in the group with left ventricular hypertrophy than in the normal group (93 versus 34 ng/ml). Thus, echocardiographic abnormalities are common in acromegaly, and patients with asymmetric septal hypertrophy and acromegaly appear to have significantly increased ventricular ejection. Many of the patients with left ventricular hypertrophy have no evidence of clinical cardiovascular disease, and their left ventricular hypertrophy may be related to higher initial growth hormone levels.
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