摘要
目的 :为评价经食管心房调搏心脏负荷试验 (简称负荷试验 )前后 QT离散度 (QTd、QTcd)的变化及在缺血性心脏病诊断中的意义。方法 :对 19例负荷试验阳性者 (阳性组 )及 2 4例负荷试验阴性者 (阴性组 )前后各时段心电图 QTd、QTcd进行对比观察。结果 :试验前及试验后 4,6 ,8m in两组 QTd、QTcd变化差异均无显著性 (P均 >0 .0 5 ) ;两组比较试验后即刻、 2 min的 QTd、 QTcd阳性组较阴性组增大 (P均 <0 .0 1) ;阳性组负荷试验后即刻、 2 min时 QTd、 QTcd均较试验前显著延长 (P均 <0 .0 1) ,试验后 4,6 ,8min时的 QTd、QTcd与试验前比较差异均无显著性 (P >0 .0 5 ) ;阴性组试验后各时段与试验前比较差异均无显著性 (P >0 .0 5 )。结论 :经食管心房调搏心脏负荷试验后即刻、 2 min时 QTd、QTcd显著延长可作为辅助诊断冠心病的有效指标之一。
Objective:To evaluate the changes and significance of QT dispersion (QTd,QTcd) before and after heart stress test with transesophageal atrial pacing (HST,briefly) Methods:19 patients with positive results of HST (positive group) and 24 with negative results (negative group) have been observed,which QTd and QTcd in corresponding periods are measured Results:Compared with negative group,QTd and QTcd of positive group during the instant period after HST and 2 minutes after HST are increased significantly (P<0 01,respectively);and during the two periods,QTd and QTcd are increased significantly in the positive group compared with the period before HST (P<0 01,respectively) The rest periods in comparesion between groups or in groups,have no significant changes (P>0 05,respectively) Conclusion:The markedly prolonged QTd and QTcd after HST can be considered as one of the effective indices in the diagnosis of coronary heart disease
出处
《广西医科大学学报》
CAS
2000年第1期73-75,共3页
Journal of Guangxi Medical University
关键词
食管心房调搏
负荷试验
QT离散度
transesophageal atrial pacing
stress test
QT dispersion
