真田 純一, 網谷 滋, 馬渡 浩介, 尾立 源晴, 鵜木 端子, 橘 裕紀, 中村 一彦, 有馬 證牙享

Jun-ichi SANADA, Shigeru AMITANI, Kousuke MAWATARI, Motoharu ODACHI, Mizuko UNOKI, Hiroki TACHIBANA, Kazuhiko NAKAMURA, Terukatsu ARIMA

鹿児島大学医学部第2内科

The Second Department of Internal Medicine, Faculty of Medicine, Kagoshima University

キーワード : Pulsed Doppler echocardiography, Isovolumic relaxation flow, Ventricular premature contraction, Postextrasystolic beat, Left ventricular hypertrophy

To assess the pathophysiological significance of the change in the isovolumic relaxation flow (IRF) in the left ventricle before and after ventricular premature contraction (VPC), pulsed Doppler echocardiography was used to evaluate 14 cases with left ventricular hypertrophy (LVH) (hypertrophic cardiomyopathy; 8, hypertensive heart disease; 6) and 30 idiopathic VPC. Left ventricular pressure tracings were obtained from 6 of the 14 cases with LVH and another 4 cases with LVH, although in these latter cases the Doppler echocardiogram could not be recorded sufficiently. The velocity of left ventricular ejection flow (EF) and rapid filling flow (RF) in postextrasystolic beats was significantly increased in both LVH groups (EF: 50±3 vs 62±25 cm/sec, p2, p2, p