P波离散度与扩张型心肌病合并阵发性心房颤动关系的临床分析

Evaluation of P wave dispersion in dilated cardiomyopathy with and without paroxysmal atrial fibrillation

关键词:  心房颤动  P波离散度  扩张型心肌病

Key words:  atrial fibrillation  P wave dispersion  cardiomyopathy

摘要:

［目的］ 观察扩张型心肌病患者及扩心病合并有阵发性房颤患者P波离散度（pdisp，Pd）、P波最大时限（Pmax）对扩心病患者合并阵发性房颤发生的预测价值。［方法］选择扩张型心肌病患者112 例，按有无房颤分为两组：I组为扩心病合并有阵发性房颤病史的患者；Ⅱ组为单纯原发性扩心病和继发性扩心病患者，测量各组的Pd及Pmax，评估其对扩心病患者合并阵发性房颤的发生的预测价值。［结果］I组与II组Pd和Pmax增大（45.3±12.7、121.5±16.3、24.7±10.5、107.3±10.3），两组相比差异有显著性意义（P<0.05）；Ⅰ组Pd明显增大，Pmax持续时间、Pd与 LAD大小呈正相关，即随着心房的扩大，Pmax在Ⅰ组明显＞Ⅱ组（P<0.05）。［结论］Pd作为房颤的心电图预测指标，具有无创、简便、比较可靠的特点，可作为预测扩张型心肌病合并阵发性房颤的预测指标。

Abstract:

［Objective］To investigate the P wave dispersion (Pdis) and maximum P wave duration (Pmax) in prediction of paroxysmal atrial fibrillation (PAF) in patients with dilated cardiomyopathy.［Methods］One hundred and twelve patients with dilated cardiomyopathy were included in this study, which were divided into group with (Group I) and without PAF (Group II). The Pdis and maximum P wave were measured in each group,and their co-relationship with PAF was analyzed.［Results］The Pdis and Pmax in Group II (45.3±12.7 and 24.7±10.5 ms) were significantly shorter than those in Group I (121.5±16.3 and 107.3±10.3 ms), with both of P<0.05. In Group I, the Pdis and Pmax are both positively correlated with left atrial diameter obtained from echocardiography (P<0.05).［Conclusion］As noninvasive parameters, Pdis and Pmax could be served as easy and reliable predictive indices of PAF in patients with dilated cardiomyopathy.