最大P波时限及P波离散度对预测特发性房颤的价值

目的：探讨最大Ｐ波时限及Ｐ波离散度（最大、最小Ｐ波时限之差）对特发性房颤的预测价值。方法：对２０例有特发性房颤病史者及２０例年龄、性别匹配的健康者，行１２导联同步体表心电图记录，测定最大Ｐ波时限及Ｐ波离散度。结果：在特发性房颤组，最大Ｐ波时限及Ｐ波离散度均较对照组增大（Ｐ〈０．０１），最大Ｐ波时限〉１１０ｍｓ、Ｐ波离散度〉４０ｍｓ以及两者相结合对特发性房颤预测的敏感性和特异性分别为９０％、８５％和７５％及８０％、８５％和９０％。结论：最大Ｐ波时限及Ｐ波离散度可用于预测特发性房颤。

Value of maximum P-wave duration and P-wave dispersion to the prediction of idiopathic paroxysmal atrial fibrillation

Objective To explore the value of maximun P wave duration (P max ) and P wave dispersion (P d),that is,the difference between the maximum and minimun P wave duration in patients with idiopathic paroxysmal atrial fibrillation.Methods P max and P d were measured from 12 lead surface electrocardiogram among 20 patients with a history of idiopathic paroxysmal atrial fibrillation and 20 age matched healthy control subjects.Results P max and P d were found to be significantly higher in patients with a history of idiopathic paroxysmal atrial fibrillation than in the control subjects(P<0.01).A P max value of more than 110 mesc,a P d value of more than 40 mesc and combination of them separated patients from centrol subjeits, with a sensitivity of 90%,85% and 75% and a specificity of 80%,85% and 90%. Conclusion P max and P d can be used for the prediction of idiopathic paroxysmal atrial fibrillation.