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体表心电信号叠加技术在急性心肌梗塞(AMI),特别是室壁瘤伴非持续性室速(VT)患者中,可记录到晚电位(LP)。我们采用Fi-delity LP-3000晚电位仪对冠心病152例[AMI 26例、陈旧性MI 24例、伴室早(VPB)93例、VT 3例、心衰和病窦各3例]和心肌炎121例进行LP检查。此外还检查了19例晕厥待查患者。阳性标准为:(1)QRS宽度>120ms;(2)QRS终末<40μV,低振幅时限>38ms;(3)滤波QRS终末40ms的平均振幅(RMS)<20μV。 26例AMI中膈面梗塞9例,2例LP阳
Surface Electrocardiographic Signal Superposition Techniques Late potentials (LPs) can be recorded in patients with acute myocardial infarction (AMI), especially aneurysms with non-sustained VT. We used Fi-delity LP-3000 night potentiometer 152 cases of coronary heart disease [AMI 26 cases, 24 cases of old MI, 93 cases with premature ventricular contractions (VPB), 3 cases of VT, 3 cases of heart failure and sick sinus] and 121 cases of myocarditis for LP examination. In addition, 19 patients were examined for syncope. The positive standard was: (1) QRS width> 120ms; (2) QRS terminal <40μV, low amplitude time limit> 38ms; (3) average QRS terminal 40ms RMS amplitude <20μV. 26 cases of AMI in the diaphragm infarction in 9 cases, 2 cases of LP Yang