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[Long-term observations of hypertension patients with asymmetrical hypertrophy of the interventricular septum].

Among 1048 patients with essential hypertension undergoing echocardiographic investigation during 1974-1980, 51 patients (4.9%) were found to have asymmetric hypertrophy of the interventricular septum. Eleven of those patients underwent a repeated echocardiography 3-5 years later. Asymmetric disproportionate hypertrophy of the interventricular septum in patients with essential hypertension was found to be one of the variants of concentric hypertrophy formation, and in a few cases--a sign of the development of idiopathic hypertrophic subaortal stenosis in arterial hypertension.