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心电图V_1导联的PV_1负向终末向量,反应左房除极过程。左房血流动力学负荷过重时,负性PV_1深度和时间增深和延长。PV_1终末指数是V_1导联负向P波深度和时间之乘积。测量时,1％秒或1/10毫米的误差均会改变该指数. 本文用附加放大心电图(1毫伏-50毫米)和一般心电图(1毫伏=10毫米)标准检查了507人.
The PV_1 negative terminal vector of V_1 ECG leads to the left atrial depolarization process. When the hemodynamic load in the left atrium is overloaded, the depth and duration of negative PV_1 are deepened and prolonged. The PV_1 terminal index is the product of the V-lead negative P-wave depth and time. When measured, an error of 1% or 1/10 mm will change the index.This article examines 507 people using the additional magnification electrocardiogram (1 millivolt-50 millimeter) and the general electrocardiogram (1 millivolt = 10 millimeter) standard.