Pust B, Rakovec P
Z Kardiol. 1976 Aug;65(8):708-12.
In 64 patients having neuromuscular disease and in 11 healthy persons, preejection period (PEP), ejection time index (LVETI) and PEP/LVET ratio of the left ventricle were studied by indirect method. PEP was significantly longer, ejection time index was significantly shorter and PEP/LVET ratio was significantly higher in patients with progressive muscular dystrophy than healthy persons. In 75% of patients having this disease LVETI was shortened and only in 30% of them Ecg abnormalities could be detected. These findings are postulated to be due to diffusely decreased contractility of the left ventricular heart muscle in progressive muscular dystrophy.
对64例患有神经肌肉疾病的患者和11名健康人，采用间接方法研究了左心室射血前期（PEP）、射血时间指数（LVETI）和PEP/LVET比值。进行性肌营养不良患者的PEP明显延长，射血时间指数明显缩短，PEP/LVET比值明显升高。在患有这种疾病的患者中，75%的患者LVETI缩短，只有30%的患者能检测到心电图异常。这些发现被认为是由于进行性肌营养不良中左心室心肌收缩力普遍下降所致。
