V_1导联P波终末向量(V_1ptf)的临床意义,与左房大小,左房压,房内(房间)传导时间的关系,一直是近年来心脏病学者比较注目的问题。早期,许多学者认为它对诊断冠心病有一定价值,后因敏感性差,特异性不强,已被摒弃。V_1ptf作为左房负荷过重、左心室功能的一种无创伤性指标,因其简便、明确,仍有不 The clinical significance of the P wave ending vector (V_1ptf) in V_1 lead and the relationship between left atrium size, left atrial pressure and conduction time in the room (room) have been the more prominent problems of cardiologists in recent years. Early, many scholars think it has some value in the diagnosis of coronary heart disease, because of poor sensitivity, specificity is not strong, has been abandoned. V_1ptf as left atrial overload, a noninvasive index of left ventricular function, because of its simple, clear, there are still not