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英文誌(2004-)

Journal of Medical Ultrasonics

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1985 - Vol.12

Vol.12 No.06

Original Article(原著)

(0514 - 0521)

肥大型心筋症の心エコー図長軸断層像による形態分類と心電図変化の検討

Relations between Echocardiographic Findings in Long Axis View and Electrocardiographic Changes in Patients with Hypertrophic Cardiomyopathy

佐久間 徹1, 桑子 賢司2, 松田 光生1, 杉下 靖郎1, 伊藤 巌1

Tohru SAKUMA1, Kenji KUWAKO2, Mitsuo MATSUDA1, Yasuro SUGISHITA1, Iwao ITO1

1筑波大学臨床医学系内科, 2三井記念病院循環器センター

1Department of Internal Medicine, University of Tsukuba, 2Center for Cardiovascular Disease, Mitsui Memorial Hospital

キーワード : Hypertrophic caxdiomyopathy, Two-dimensional echocardiography, Giant negative T wave, Abnormal Q wave, Left ventricular voltage

 The relationship between 2-dimensional echocardiographic findings in long axis view and electrocardiographic changes were studied in 49 patients with hypertrophic cardiomyopathy. Among them, 16 had a history of hypertension. Patients were divided into three groups according to echocardiographic patterns of interventricular septal hypertrophy—diffuse type, basal type and apical type. Diffuse type and apical type revealed left ventricular high voltage (5.0±1.4 mV, 6.1±1.5 mV), deep negative T waves (-0.9±0.7 mV, -1.2±0.9 mV) and high incidences of giant negative T waves (35%, 47%) and of abnormal Q waves (35%, 29%). Basal type had lower left ventricular voltage (3.8±0.9 mV), less marked negative T waves, and lower incidence of abnormal Q waves (17%) than the other types. Patients with hypertension were seen both in diffuse and apical types, but not in Basal type. Patients with hypertension did not show any significant differences in wall thickness and ECG findings as compared with normotensives.