摘要
目的探讨局灶性房性心动过速(房速)发作时体表心电图房性P波形态对左房或右房房速的预测价值。方法 48例房速起源部位均经射频消融术精确定位,并回顾性分析房速发作时体表心电图房性P波的形态特征,分析二者的关系。结果 V1导联P波正向预测左心房起源房速的敏感性、特异性分别为86.7%和87.9%;而I导联和AVL导联P波负向预测左心房起源房速的敏感性分别为40%和53.3%;而特异性分别达100%和97%;V1导联P波负向预测右心房起源房速的敏感性特异性分别为81.8%和100%;而心电图与射频消融诊断房速起源的比较,差异无统计学意义(P>0.05)。结论通过房速发作时的P波分析,可初步预测局灶性房速的起源部位,为射频消融术术前准备及选择恰当的手术方式提供参考价值。
Objective To explore the predicting value to differentiate left atrial from right atrial tachycardia of the surface electrocardiography form of atrial P wave configuration during focal atrial tachycadia（AT）. Methods All 48 origin locus of atrial tachycardia patients underwent catheter ablation successfully. The surface ECG recordings during atrial tachycarycardia were reviewed in all patients. Tthe relation between anatomic sites were analyzed. Results The sensitivity and specificity of positive P wave in lead V1 that indentified origin a left atrial focus was 86.7% and 87.9% respectively. The sensitivity of negative P wave in lead I and aVL that indentified origin a left atrial focus was only 40% and 53.3% respectively. But the specificity was100% and 97% respectively, The sensitivity and specificity of negative P wave in lead V1 that indentified origin a right atrial focus was 81.8% and 100% respectively.There was no significant difference（P0.05）between electrocardiography and radiofrequency. Conclusion It is possible to predict the site of origin of focal atrial tachycardia by analyzing its P wave configuration,and may be value helpful for preparation before ablation.
出处
《中国现代药物应用》
2011年第2期23-24,共2页
Chinese Journal of Modern Drug Application
