Dilaveris P E, Gialafos E J, Sideris S K, Theopistou A M, Andrikopoulos G K, Kyriakidis M, Gialafos J E, Toutouzas P K
State Department of Cardiology, Hippokration Hospital, Athens, Greece.
Am Heart J. 1998 May;135(5 Pt 1):733-8. doi: 10.1016/s0002-8703(98)70030-4.
The prolongation of intraatrial and interatrial conduction time and the inhomogeneous propagation of sinus impulses are well known electrophysiologic characteristics in patients with paroxysmal atrial fibrillation (PAF).
To search for possible electrocardiographic markers that could serve as predictors of idiopathic PAF, we measured the maximum P-wave duration (P maximum) and the difference between the maximum and the minimum P-wave duration (P dispersion) from the 12-lead surface electrocardiogram of 60 patients with a history of idiopathic PAF and 40 age-matched healthy control subjects.
P maximum and P dispersion were found to be significantly higher in patients with idiopathic PAF than in control subjects. A P maximum value of 110 msec and a P dispersion value of 40 msec separated patients from control subjects, with a sensitivity of 88% and 83% and a specificity of 75% and 85%, respectively.
P maximum and P dispersion are simple electrocardiographic markers that could be used for the prediction of idiopathic PAF.
房内和房间传导时间延长以及窦性冲动的不均匀传导是阵发性心房颤动（PAF）患者众所周知的电生理特征。
为了寻找可作为特发性PAF预测指标的可能心电图标志物，我们测量了60例有特发性PAF病史的患者和40例年龄匹配的健康对照者的12导联体表心电图的最大P波时限（P最大值）以及最大与最小P波时限之差（P离散度）。
发现特发性PAF患者的P最大值和P离散度显著高于对照者。P最大值为110毫秒和P离散度为40毫秒可将患者与对照者区分开，敏感性分别为88%和83%，特异性分别为75%和85%。
P最大值和P离散度是可用于预测特发性PAF的简单心电图标志物。
