Published on:
    Journal of Cardiovascular Disease Research, 2010; 1(4):210-212
    CASES REPORT BASED CLINICAL STUDY | doi:10.4103/0975-3583.74266

    Modification of atrioventricular node in a special condition treating paroxysmal supraventricular tachycardia


    Jun-Hua Wang, Peng Zhou1, Yu-Qian Li, Jin-Jin Sun, Wei-Jie Tan, Cong-Chun Huang, Xin-Ya Yu, Chao-Zhong Liu, Hui-Lan Luo

    Department of Cardiology, Air Force General Hospital, PLA, No.30, Fucheng Road, Haidian District, Beijing, PR China,

    1Section on Cardiology, Internal Medicine, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA.


    Modifi cation of atrioventricular node is a usual and necessary operation to cure atrioventricular nodal reentrant tachycardia (AVNRT). In this operation, atrioventricular block is the most severe complication and its prevention is of our great concern. This complication always occurs under some special circumstances with potential risk. So, it is very important to realize such conditions, as in this paper. A patient with paroxysmal palpitation for 10 years, aggravating to shortness of breath with chest distress for 1 year; cardiac electrophysiological examination found slow conduction in both antegrade and retrograde paths of reentrant loop, and typical AVNRT could be induced. During effective ablation there was no junctional rhythm. In some special cases, modifi cation of atrioventricular node should not only rely on the junctional rhythm to determine the ablation effect, but also on the time of cardiac electrophysiological examination, as such to avoid the severe complication of atrioventricular block caused by excessive ablation.

    Key words: Atrioventricular nodal reentrant tachycardia, paroxysmal supraventricular tachycardia, radiofrequency catheter ablation.