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1 Echocardiography showed 14 of 24 patients with essential hypertension to have hypertrophy of their left ventricular walls. In eight of these 14 patients the left ventricular configuration initially fulfilled the criteria for asymmetric septal hypertrophy (ASH) and six were symmetrically hypertrophied, the remaining ten being normal. 2 Following 12 weeks' treatment of hypertension with the object of reducing the supine BP to 150/90 mmHg or below, there was a reduction of wall thickness so that only two of the eight continued to show ASH. 3 The six patients with symmetrical left ventricular hypertrophy also showed a significant reduction in the thickness of the septum and the posterior wall. Those with normal echocardiograms did not change. 4 This reduction of wall thickness produced by antihypertensive therapy may represent regression of left ventricular hypertrophy.
Hill et al. (Sun,) studied this question.