Study on safety of radiofrequency catheter ablation in treatment of AV nodal reentrant tachycardia
- VernacularTitle:射频导管消融术治疗房室结折返性心动过速的安全性探讨
- Author:
Ping LI
;
Ruihua CHEN
;
Jianchun LI
;
Shisen JIANG
;
Qigao ZHANG
;
Baoju LIU
- Publication Type:Journal Article
- Keywords:
AV nodal reentrant tachycardia;
Radiofrequency catheter ablation;
AV conduction block
- From:
Journal of Medical Postgraduates
2003;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the couse of 24 cases AVB during RFCA and 5 cases after RFCA in total 94 AVNRT patients. Methods:94 AVNRT patients received RFCA in which time, the energy and power were gradually discussed. The correlation among AVB and both different anatomical positions (upper, middle and lower zone) and A/V, H-value in intraventricular ablation mapping were studied respectively. Results: With the elevation of ablation zone, the AVB risk was also increased. The intraventricular ablation mapping showed that:①Increase of A/V and H-value means higher AVB risk;② Simultaneous increase of A/V and H-value would lead to the most dangerous result. Conclusion:It is of great importance to perform RFCA under such situation:middle and lower zone as ablation positions multiple-peak A wave, A/V(0.1-0.25) and no H or slightest H(≤0.02?0.03)mV are present in intraventricular ablation mapping, which could significantly lower the risk of RFCA-related AVB.
