P波最大时限及P波离散度与急性心肌梗死并发心房颤动的关系

Relationship between P wave maximal interval and P wave dispersion and acute myocardial infraction with atrial fibrillation

目的探讨P波最大时限(Pmax)及P波离散度(Pd)与急性心肌梗死并发心房颤动的关系。方法急性心肌梗死患者60例中出现房颤29例,未发生房颤31例。比较两组体表12导联心电图的Pmax、Pd。结果两组Pmax、Pd差异均有统计学意义(P<0.01),Pmax≥110ms、Pd≥40ms及两者相结合时预测心房颤动的敏感性分别为89.7%、86.2%、75.9%,特异性分别为77.4%、83.9%、90.3%,阳性预测值分别为78.8%、83.3%、88.0%。结论急性心肌梗死患者Pmax和Pd明显增加时易发生房颤,提示Pmax和Pd是预测急性心肌梗死患者发生房颤的一种简单可靠的方法。

Objective To explore the relationship between P wave maximal interval （ Pmax ） and P wave dispersion （Pd） and the occur- rence of atrial fibrillation（AF） in the patients with acute myocardial infraction （ AMI）. Methods The Pmax and Pd in 12 lead EKG in two groups of AMI patients with Af or without Af were measured. Rusults Pmax and Pd had significant difference between AMI with AF and contral group. Juding by the Pmax. more than 110ms or Pd more than 40ms or both, the AF predicting sensitivity were 89.7% ,86.2% and 75.9%, the specificity were 7.4%, 83.9% and 90.3%, the positive predictive value were 78.8%, 83.3% and 88. 0%, respectively.Conclusion . The longer. the Pmax and Pd of the patients with AMI, the more possibility of occurrence of AF,with the increase of the Pmax and Pd of the patients with AMI, the incidence of AFwilt be high.