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1.后电位(After potential)与晚电位(迟电位,Latepoential)是否为同一概念?从目前看,后电位是由跨膜动作电位或单相动作电位记录获得的,是由前一次去极化波触发(而不能自发)产生的振荡电位:而晚电位是由心外膜或体表心电图记得的,不需触发而能自发地由于心肌缺血而产生的碎裂电活动。从发生时间上看,后电位发生于动作电位2、3相(早期后去极化)或4相(迟发后去极化),相当于二心电图 ST 末段与 T 波段,而晚电位发生于心电图 QRS 波末与 ST 前段。两者虽然都可引起心律失常,但后去极化通过振荡波达到阈电位水平而触发心律失常,属冲动起源异常(自动性异位心律),而晚电
1. After Potential (Late Potential, Late Potential) is the same concept? From the current view, the posterior potential is transmembrane action potential or single-phase action potential record obtained by the previous depolarization Waves trigger (rather than spontaneously) oscillating potentials: while late potentials are fragmented electrical activity that occurs spontaneously due to myocardial ischemia without being triggered by the epicardium or the body surface electrocardiogram. From the time of occurrence, the posterior potentials occurred at action potentials 2, 3 (early post-depolarization) or 4-phase (post-depolarization depolarization), which corresponded to the ST and T bands of the two ECGs and the late potentials QRS end of the ECG and ST anterior segment. Although both can cause arrhythmia, but after the depolarization reached the threshold potential level by oscillation wave to trigger arrhythmia, is the origin of impulse abnormalities (automatic ectopic rhythm), and late power