摘要
目的探讨经皮冠状动脉腔内成形术（PTCA）对QT离散度（QTd）的影响和意义。方法回顾性分析39例PTCA术前后1天内所记录的心电图，测算QTd和QTcd并分成功组和失败组进行术前术后的比较。结果PTCA成功组术后QTd和QTcd较术前显著减小（P＜0.001），而失败组术前术后变化无显著性差异。4例冠脉再狭窄患者第一次PTCA后下降的QTd再次上升，结论成功的PTCA能显著缩小冠心病患者的QTd再次升高可能是反映PTCA术后冠脉再狭窄的一个指标。
Objective To explore the effect of percutaneous transluminal coronary angioplasty(PTCA) to QTdispersity (QTd) .Methds Analysed retrospectivly electrocardiograns of 39 Patients l day before and after PTCT,cal-culated and compard QTd and QTcd. Results QTd and QTcd were reduced significantly after PTCA in success group(P < 0.001; ) .there were no changes in PTCA failure group. In 4 Patients with coronary re -- stenosis, QTd was in- creased, again which had been reduced after the first PTCA. Conclusion Successful PTCA could notably reduce QTd inpatients with angina petoris and myocardial imfarction. QTd may be a marker of re -- stnosis after PTCA.[
关键词
血管成形术
经皮
冠状动脉
腔内成形
QT离散度
Angioplasty, transluminal, pereutaneous coronary QT dispersity Coronary arteriosclero- sis Heart diseases
