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正常组:200例中QRS环前向电力增大+20~0者57例占28.30％,大于+30~0者5例占2.5％。异常组:235例中QRS环前向电力增大+20~0者74例占48％,大于+30~0者65例占27.6％。两组比较在大于+30‘以上有明显差异,表明QRS环前向电力增大至+30~0以上对左中隔支阻滞有临床意义。与疾病因素关系:冠心病84例中57例占24.25％,高血压病44例中28例占11.91％,糖尿病11例中6例占2.55％,较其它疾病检出率增高。运用心向量诊断左中隔支阻滞所致QRS环前向电力增大优越于心电图,按心向量诊断四项标准,运用心电图与心向量对照检查分析、结合临床判断较为稳妥。
In the normal group, 57 cases accounted for 28.30% of the QRS ring forward power increase in 200 cases, 2.5% of the cases were more than + 30 ~ 0. In the abnormal group, the positive power of QRS ring increased from 48 to 48% in 235 cases, while 65 cases accounted for 27.6% of those in more than 30 to 0 cases. Significant differences between the two groups in more than +30 ’above, indicating that the QRS ring forward power increased to +30 ~ 0 above the clinical significance of the left middle septal block. And the relationship between disease factors: coronary heart disease in 84 cases accounted for 24.25%, 44 cases of hypertension in 28 cases accounted for 11.91%, 11 cases of diabetes in 6 cases accounted for 2.55%, higher than other diseases detection rate. Using the cardiac vector to diagnose the QRS ring caused by the block of the left middle septal branch, the forward power is superior to that of the electrocardiogram, and the four vectors are diagnosed according to the cardiac vector. The electrocardiogram and heart vector are used for the comparative analysis and combined with the clinical judgment.