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本文观察表明,P波时间和P~(tf)-v_1诊断左房扩大均不如超声心动图敏感,阳性率两者基本相似(P>0.05),综合使用两项指标,虽可使阳性率提高到60%,但与单独使用P_(tf)-v_1无显著差异。P波时间与左房大小呈正相关,对左房扩大的诊断有一定价值。P_9tf)-v_1与左房大小关系不密切,其临床意义尚待进一步观察研究。
This observation shows that P wave time and P (tf) -v_1 diagnosis of left atrium expansion are not as sensitive as echocardiography, the positive rate of the two were similar (P> 0.05), the combined use of two indicators, although the positive rate can be increased To 60%, but no significant difference with P_ (tf) -v_1 alone. P wave time and left atrial size was positively correlated with the diagnosis of left atrial enlargement has some value. P_9tf) -v_1 and left atrial size is not closely related to its clinical significance remains to be further observed and studied.