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本文通过心电图V_1导联终末向量(PTF—V_1)与164例冠心病患者临床对比分析.探讨PTF-V_1对判断左心功能不全的价值.病人分二组 心衰组(左心衰为主)69例.非心衰组95例,两组均进行PV_1形态分析及PTF-V_1测量.PTF—V_1以V_1导联P波终未向量(双向p波时的负向波)的振幅和时间的乘积所得负值表示,(以mm·s为单位)结果 两组V_1导联P波形态比较,P波正负双向者心衰组为95.7%,非心衰组为21.1%,心衰组P波负正双向者明显多于非心衰组,两者之间差异显著.(x~2=86.23,P<0.005),两组V_1导联P波正负双向者PTF值变化比较:PTF值≥-0.02者非心衰组明显高于心衰组(x~2=55.96,P<0.01),PTF值<-0.02～≥-0.04者,心衰组明显高于非心衰组(x~2=18.54,P<0.005)PTF
In this paper, through the electrocardiogram V_1 lead terminal vector (PTF-V_1) and 164 cases of coronary heart disease in patients with clinical comparative analysis of PTF-V_1 to determine the value of left ventricular dysfunction.Two patients with heart failure group (mainly left heart failure ) 69 cases of non-heart failure group of 95 cases, PV_1 morphological analysis and PTF-V_1 were measured in both groups.PTF-V_1 with V_1 lead P wave final unvector (bidirectional p-wave negative wave) amplitude and time (In mm · s) results P-wave morphology of V_1 lead of two groups compared, P wave positive and negative bidirectional heart failure group was 95.7%, non-heart failure group was 21.1%, heart failure group (P <0.005), P-wave positive and negative P-wave PTF value of the two groups compared: PTF (P <0.05), P wave positive and negative bidirectional were significantly more than non-heart failure group, The value of-0.02 in non-heart failure group was significantly higher than that of heart failure group (x ~ 2 = 55.96, P <0.01), PTF value was less than -0.02 ~ ~ 2 = 18.54, P <0.005) PTF