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本文对167例住院病人进行超声左心房内径(LAD)测定与心电图的对比研究,探讨心电图对左心房增大的诊断价值。其中高心病53例、冠心病46例、风心病23例。超声左房增大组(LAD>37mm)83例,男64,女19,平均年龄50.8岁;左房正常组(LAD≤37mm)84冽,男56,女28,平均年龄48.8岁。LAD 在收缩末期测定。观察的心电图左房增大指标七项;P 波终末电势(Ptf-v_1)、Pv_1负相间期、Pv_1负相电压、P 波时限、P 波/P-R 段比值、双峰 P波、P 电轴等。结果:除了 P 波/P-R 段比值、P 额面电轴、双峰 P 波外,余各项心电图标准在两组有明显差别(P<0.01),而对超声左房增大的敏感性均较低。Pv_1负相间期>40msm 对轻度左房增大敏感性较高,而特异性较低。Ptf-v_1异常标准由>0.03
In this paper, 167 cases of in-patients with left atrial diameter ultrasound (LAD) determination and ECG comparative study to explore the diagnostic value of ECG on the left atrium enlargement. 53 cases of high heart disease, 46 cases of coronary heart disease, rheumatic heart disease in 23 cases. There were 83 cases with LAD> 37mm in the ultrasound group, male 64 and female 19, with an average age of 50.8 years old. The normal left atrium group (LAD≤37mm) had 84 冽, male 56 and female 28 with an average age of 48.8 years. LAD in the end of the contraction measured. P wave end potential (Ptf-v_1), Pv_1 negative phase, Pv_1 negative phase voltage, P wave duration, P wave / PR segment ratio, bimodal P wave, P Shaft and so on. Results: Except P wave / PR segment ratio, P frontal axis and bimodal P wave, the standard of electrocardiogram was significantly different between the two groups (P <0.01), while the sensitivity to the increase of left atrium was Lower. Pv_1 negative interphase> 40msm slightly higher sensitivity to mild left atrial enlargement, while the specificity is low. Ptf-v_1 abnormal standard from> 0.03