房室折返性心动过速与房室结折返性心动过速的对比分析

目的　通过对其临床特征的对比分析 ,以期提高鉴别诊断的能力。方法　选择经射频消融证实且临床资料完整的房室折返性心动过速 (AVRT)及房室结折返性心动过速 (AVNRT)的病例。 AVRT均为隐匿旁道且均为单旁道病例。剔除多旁道病例及其 AVNRT合并 AVRT病例。对其性别、心率特征、病程、始发年龄、接受射频消融术 (RFCA术 )年龄进行对比分析。结果　 AVNRT与 AVRT在性别、心率特征方面差异无显著性(P>0 .2 5 ) ;接受 RFCA术年龄、发病年龄均为前者高于后者 ,且差异有显著性。分别为 (49± 16 )对 (42± 13) ,P<0 .0 5 ;(39± 15 )对 (30± 12 ) ,P<0 .0 1。二者在病程、发作时心率方面差异无显著性 (P>0 .5 ,P>0 .0 5 )。结论　性别、心率特征对鉴别 AVNRT及 AVRT无更多的实用价值。利用 AVRT组发病年龄明显低于 AVNRT组 ,对鉴别二者具有较大的实用价值

Comparative analysis of atrioventricular reentrant and atrioventricular nodal reentrant tachycardia

Objective Comparatively analysing the characteristics of atrioventricular reentrant tachycardia (AVRT) and atrioventricular nodal reentrant tachycardia (AVNRT) to improve the ability of differential diagonosis.Method The patients who had undergone radiofrequency catheter ablation (RFCA) of AVRT or AVNRT were selected.All AVRT patients with single concealed accessory pathway were included,excepting those with multiple accessory pathway or AVNRT complicated with AVRT.The sex,ages of initial tachycardia attack and RFCA,heart rate of supraventricular tachycardia,and course of disease were compared. Results There were no significant differences in sex and heart rate of AVRT and AVNRT groups (P>0.25).It was found that the age of initial tachycardia attack and undergoing RFCA was older in AVNRT group than in AVRT group.The significant difference was (39±15) vs (30±12) (P<0.01) and (49±16) vs (42±13) (P<0.05) respectively.However,no significant difference of disease courses and heart rates on tachycardia attack existed between the two groups (P>0.5,P>0.05).Conclusion Sexuality and heart rates are unavailable for differentiating AVNRT from AVRT,but the noticeably younger age of initial tachycardia attack in AVRT group is of practical value in distinguishing between them.