摘要
介绍一种新的电生理方法可快速准确地诊断隐匿性后间隔旁路。方法:右室心尖部和基底部起搏,比较12例隐匿性后间隔旁路(A组)和20例房室结双径路(B组)患者的室房传导时间(VAI)。结果:①心尖部起搏时A组VAI(186±39)ms与B组(171±32)ms相比,无显著性差异(P>0.05);②基底部起搏时A组VAI(144±31)ms明显短于B组(194±33)ms;两者有显著性差异(P<0.01);③两部位(心尖部和基底部)VAI之差值VAindex,A组≥10[10~80,平均(30±26)]与B组≤0[-55~0,平均(-23±16)]比较有极显著性差异(P<0.001)。结论:右室心尖部和基底部起搏可快速准确地判断室房逆传径路是后间隔旁路还是房室束。
A new simple electrophysiological method to rapidly and accurately diagnose concealed posteroseptal accessory pathway was introduced. Using decremental pacing from apical and posterobasal right ventricular site, ventriculoatrial interval (VAI) between 12 patients with concealed posteroseptal accessory pathway (group A) and 20 patients with atrioventricular nodal reentrg tachycardia (group B) were compared. During apical pacing, VAI in group A (186±39) ms was not significantly different from that in group B (171±32 ms, P >0.05). During posterobasal pacing, group A had significantly shorter VAI than group B (144± 31 ms versus 194±33 ms, P <0.01). The difference between the VAI, obtained during apical pacing and that obtained during posterobasal pacing (VA index ) can discriminate between these two groups without overlapping. It was positive in all group A patients (30±26, range, 10 ̄80) and negative in all except three group B patients (-23±16, range, -55 ̄0, P <0.001). Right ventricular pacing from apical and posterobasal sites can identify rapidly and accurately whether the retrograde conduction is proceeding over posteroseptal accessory pathway or the normal atrioventricular node.
出处
《南京医科大学学报(自然科学版)》
CAS
CSCD
1997年第4期325-328,共4页
Journal of Nanjing Medical University(Natural Sciences)
关键词
心室起搏
隐匿性
后间隔旁路
射频消融
SVT
ventricular pacing
ventriculoatrial interval
concealed posteroseptal accessory pathway
atrioventricular node