Ten-year outcomes of monomorphic ventricular tachycardia catheter ablation in repaired tetralogy of Fallot

被引:24
作者
Laredo, Mikael [1 ]
Frank, Robert [1 ]
Waintraub, Xavier [1 ]
Gandjbakhch, Estelle [1 ]
Iserin, Laurence [2 ]
Hascoet, Sebastien [3 ]
Himbert, Caroline [1 ]
Gallais, Yves [1 ]
Hidden-Lucet, Francoise [1 ]
Duthoit, Guillaume [1 ]
机构
[1] Hop La Pitie Salpetriere, Inst Cardiol, Unite Rythmol, 47-83 Blvd Hop, F-75013 Paris, France
[2] Hop Europeen Georges Pompidou, Serv Cardiol Congenitale Adulte, Paris, France
[3] Hop Marie Lannelongue, Serv Cardiol Pediat & Congenitale, Le Plessis Robinson, France
关键词
Tetralogy of Fallot; Sudden cardiac death; Ventricular tachycardia; Catheter ablation; Implantable cardioverter-defibrillator; CONGENITAL HEART-DISEASE; SUDDEN CARDIAC DEATH; CARDIOVERTER-DEFIBRILLATOR THERAPY; SURGICAL REPAIR; ADULTS; RISK; ARRHYTHMIA; IDENTIFICATION; SURVIVORS;
D O I
10.1016/j.acvd.2017.01.009
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background. - Monomorphic ventricular tachycardia (MVT) is common in adults with repaired tetralogy of Fallot (TOF), and is associated with sudden cardiac death. Management of MVT is not defined, and results of catheter ablation (CA) are limited. Aims. - To evaluate long-term outcomes of MVT CA in repaired TOF. Methods. - Thirty-four patients (mean age 32 +/- 10.3 years; 59% male) with repaired TOF under went CA for symptomatic MVT between 1990 and 2012 in our centre; direct-current ablation (DCA) was used in 6%, radiofrequency followed by DCA in 29% and radiofrequency alone in 65%. Results. - Right ventricular (RV) dysfunction was present in 35% and left ventricular (LV) dysfunction in 21%. Mean numbers of clinical and induced MVTs were 1 and 2, respectively. Mean VT rate was 225 95 bpm. Ablation targeted a single site (range 1-2), which was RV outflow tract in 85%. Primary success, defined as ventricular tachycardia (VT) termination during CA and final non-inducibility, was obtained in 82%. Seven patients (21%) required redo ablation in the first 3 months (before 2004; DCA). No death related to CA occurred. Mean follow-up time was 9.5 +/- 5.2 years. Antiarrhythmic therapy was discontinued in 71%. There were two cases of sudden cardiac death and four VT recurrences. Freedom from death and arrhythmia recurrence was 94% at 5 years, 81% at 10 years and 70% at 20.years. Global survival was 91% at 20 years. Baseline LV ejection fraction < 60% was significantly associated with ventricular arrhythmia recurrence (hazard ratio 16.4, 95% confidence interval 1.8-147; P=0.01). Conclusions. - CA can safely address macroreentrant MVT in repaired TOF patients with an acceptable long-term rate of recurrence in this high-risk population. Anatomical classification of isthmuses with electroanatomical mapping provides reproducible endpoints for CA. Attention should be given to LV systolic function in risk assessment and selection of candidates for implantable cardioverter-defibrillator. (C) 2017 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码:292 / 302
页数:11
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