[Analysis of the causes of recurrence of atrioventricular reentry tachycardia in patients treated with radiofrequency current ablation].
The recurrence rate of atrioventricular reentry tachycardia (AVRT) after radiofrequency current ablation (RFCA) of 124 accessory atrioventricular pathways (AP) in 122 patients were reported and the possible causes of recurrence of AVRT were analyzed. Of the 122 patients, 81 were male, 41 female. The average age of the patients was 46.3 +/- 14.4 (14-71) hears. There were 81 manifest AP in 80 patients, 43 concealed AP in 42 patients. 13 of the 124 AP were located in left anterior wall, 59 left lateral wall, 8 left posterior wall, 10 left posterior interventricular septum. 14 right anterior interventricular septum, 2 mid-septum, 14 righy posterior interventricular septum and 4 right free wall. All patients had no organic heart disease. The total recurrence rate of 124 AP in the 122 patients during a follow-up period of 2-25 (13.5 +/- 7.1) months was 4.03% (5/124), with manifest and concealed AP 1.23% (1/81) and 9.30% (4/43), respectively (P < 0.05); left free wall and interventricular septum AP were 2.5% (2/80) and 7.5% (3/40), respectively (P > 0.05); left and right AP were 3.3% (3/90) and 3.1% (1/32), respectively (P > 0.05). The recurrence time was from 0.5 to 60 (15.4 +/- 25.4) days. The recurrence may be related to inaccurate ablation target site, functional and anatomical characteristics of AP, locations of AP, and insufficient ablation energy, etc. It is suggested that AVRT patients receiving RFCA should be followed up for a certain period.
Hou
Y
Y
Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an.
Du
R
R
Yang
X
X
D000293:Adolescent; D000328:Adult; D000368:Aged; D017115:Catheter Ablation; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000601:surgery*