scholarly journals Radiofrequency catheter ablation of ventricular tachycardia in pediatric patients

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Woo Young Park ◽  
Mi Kyoung Song ◽  
Gi Beom Kim ◽  
Sang Yun Lee ◽  
Hye Won Kwon ◽  
...  
Keyword(s):  
Ventricular Tachycardia ◽  
Catheter Ablation ◽  
Radiofrequency Catheter Ablation ◽  
Pediatric Patients ◽  
Substantial Improvement ◽  
Left Ventricular ◽  
Complete Mapping ◽  
Acute Success

Abstract Background Radiofrequency catheter ablation (RFCA) has been accepted as an efficient therapy for tachycardia, and substantial improvement in the outcomes of RFCA in pediatric patients has been seen. However, there is not enough data on the clinical outcomes of RFCA for ventricular tachycardia (VT) in pediatric patients. The objective of this study was to elucidate the efficacy and safety of RFCA for VT in pediatric patients. Methods We performed a retrospective study involving 35 consecutive pediatric VT ablation procedures in 28 patients at a single institution. Results The median age at ablation was 14.0 years (range 6.9–19.2 years). There were 24 patients with a structurally normal heart and four patients with congenital heart disease (CHD). The left ventricular posteroseptal area was the most common site of VT origin (22/28, 78.6%). However, there was an unusual case of VT which involved a papillary muscle as its origin. Acute success was achieved in 30 (85.7%) of 35 procedures. The recurrence rate after successful RFCA was 14.2% (5/35) at a median follow-up of 6.7 years (range 1.0–16.7 years). There were five procedural failures due to the inability to induce VT for complete mapping. Ultimately, long-term success was achieved in 27 patients (96.4%) after repeated procedures and no major complications occurred. Long-term success was associated with VT inducibility (p =  < 0.001). Conclusions Difficulty in inducing VT for precise mapping was a significant obstacle to successful RFCA. RFCA was identified as safe and effective therapy to eliminate VT in the selected pediatric VT patients.

Long-Term Follow -Up After Radiofrequency Catheter Ablation of Fascicular Ventricular Tachycardia at National Institute of Cardiovascular Diseases

1970 ◽  
Vol 1 (2) ◽  
pp. 201-206
Author(s):  
MA Ali ◽  
MM Hossain ◽  
S Hashem ◽  
MA Jami ◽  
A Hossain ◽  
...  
Keyword(s):  
Ventricular Tachycardia ◽  
Radiofrequency Ablation ◽  
Cardiovascular Diseases ◽  
Catheter Ablation ◽  
Left Ventricle ◽  
Radiofrequency Catheter Ablation ◽  
Left Ventricular ◽  
Target Site

Introduction: Verapamil-sensitive, idiopathic left ventricular tachycardia (ILVT) with right bundle branch block configuration and left-axis deviation is known to be due to re-entry mechanism but the exact nature of reentrant circuit in ILVT is not fully elucidated. In this study we evaluate the results of long-term clinical outcome in patients who underwent radiofrequency catheter ablation of idiopathic fascicular ventricular tachycardia in National Institute of Cardiovascular Diseases. Methods: Electrophysiological studies and radiofrequency ablation were performed in 46 consecutive patients (42 men,04 women), age ranging from 16 to 36 years (mean 20±5 years) with verapamilsensitive ILVT and structurally normal hearts. VT could be terminated by the intravenous administration of verapamil in all patients. Mapping was performed using a Bard electrophysiology system. The target site for ablation was the mid-septum of left ventricle where the earliest Purkinje potentials were recorded during VT. RF current was applied to the target site with or without late diastolic potential during VT in all patients to meet the ablation endpoints which were termination of the VT and non-inducibility of the tachycardia. Results: All 46 patients had successful ablation of the ILVT. During 3 years follow up 02 patients had recurrence. Conclusion: Idiopathic left ventricle tachycardia occurs most commonly in young population. Prompt recognition of this arrhythmia is important since radiofrequency ablation can cure this rhythm problem. This can be achieved in a country like Bangladesh where resources are limited. Key words: Radiofrequency Catheter ablation; Idiopathic left ventricle tachycardia. DOI: http://dx.doi.org/10.3329/cardio.v1i2.8239 Cardiovasc. j. 2009; 1(2): 201-206

Abstract 16668: Long-term Outcomes After Endo-epicardial Catheter Ablation of Ventricular Tachycardia in Nonischemic Cardiomyopathy

Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Erica S Zado ◽  
Pasquale Santangeli ◽  
Francis E Marchlinski
Keyword(s):  
Ventricular Tachycardia ◽  
Catheter Ablation ◽  
Substantial Improvement ◽  
Nonischemic Cardiomyopathy ◽  
Term Outcome ◽  
Long Term Outcome ◽  
Linear Ablation ◽  
Long Term Follow Up

Introduction: Endo-epicardial catheter ablation of ventricular tachycardia (VT) in patients (pts) with nonischemic cardiomyopathy (NICM) has been reported to have satisfactory results at the short- and mid-term follow-up. We sought to determine the outcomes at the long-term follow-up of endo-epicardial ablation of VT in NICM. Hypothesis: Catheter ablation provides satisfactory long term outcome Methods: We prospectively enrolled 128 pts (age 59±13 years, 116 [91%] males) with NICM who underwent endo-epicardial radiofrequency catheter ablation at our Institution. After substrate mapping, all critical sites for the clinical or induced VT(s), identified with activation, entrainment or pace-mapping, together with late, split and fractionated potentials were targeted with focal and/or linear ablation. The procedural endpoint was noninducibility of sustained monomorphic VT. Pts were followed with ICD interrogation. Results: A total of 108 (73%) pts had idiopathic dilated NICM. The remaining 20 (14%) pts had hypertrophic CM (n=11), suspected inflammatory CM (n=6), or valvular CM (n=3). The mean LV ejection fraction was 33±15%. After a mean follow-up of 19 months (max 97 months), a total of 36 (28%) pts died and 17 (13%) underwent heart transplant. Cumulative survival free from any recurrent VT was 53% (68/128 patients) (Figure A). In the remaining 60 (47%) patients with VT recurrences, catheter ablation still resulted in a significant beneficial clinical impact on VT burden, with 25/60 (42%) having only isolated (1-2) VT episodes over follow-up, and a striking reduction of VT storm in the remaining pts (Figure B). Conclusions: In patients with NICM and VT, endo-epicardial substrate-based ablation is effective in achieving long-term freedom from any VT in 53% of patients, with a substantial improvement in VT burden in many of the remaining patients.

Long-Term Follow-Up After Radiofrequency Catheter Ablation of Ventricular Tachycardia: A Successful Approach?

2002 ◽  
Vol 13 (5) ◽  
pp. 417-423 ◽  
Author(s):  
ALIDA E. BORGER BURG ◽  
NATASJA M.S. GROOT ◽  
LIESELOT ERVEN ◽  
MARIANNE BOOTSMA ◽  
ERNST E. WALL ◽  
...  
Keyword(s):  
Ventricular Tachycardia ◽  
Catheter Ablation ◽  
Radiofrequency Catheter Ablation ◽  
Long Term Follow Up ◽  
Successful Approach

scholarly journals Radiofrequency catheter ablation for treatment of bundle branch reentrant ventricular tachycardia: Results and long-term follow-up

1991 ◽  
Vol 18 (7) ◽  
pp. 1767-1773 ◽  
Author(s):  
Todd J. Cohen ◽  
Walter W. Chien ◽  
Keith G. Lurie ◽  
Charlie Young ◽  
Harold R. Goldberg ◽  
...  
Keyword(s):  
Ventricular Tachycardia ◽  
Catheter Ablation ◽  
Radiofrequency Catheter Ablation ◽  
Long Term Follow Up

Abstract 16072: Clinical Outcomes of Catheter Ablation for Left Ventricular Summit/intramural Premature Ventricular Contractions Comparing Conventional vs. Fluoroless Techniques

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Jorge Romero ◽  
Juan C Diaz ◽  
Isabella Alviz ◽  
David Briceno ◽  
Chintan Trivedi ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Side Effects ◽  
Catheter Ablation ◽  
Ionizing Radiation ◽  
Clinical Outcomes ◽  
Radiofrequency Catheter Ablation ◽  
Left Ventricular ◽  
Premature Ventricular Contractions ◽  
Acute Success

Introduction: Radiofrequency catheter ablation (CA) is the preferred treatment for premature ventricular contractions (PVCs). Ionizing radiation has major side effects for both patients and personnel in the electrophysiology laboratory. Fluoroless procedures are routinely performed for atrial fibrillation and simple PVC cases. Nonetheless, left ventricular (LV) summit/intramural PVCs cases are more challenging and clinical outcomes and complications have been poorly studied in this category with the use of fluoroless ablation. Hypothesis: We aimed to compare acute, long-term success rate and complications between fluoroless procedures versus standard approach for left ventricular (LV) summit/intramural PVCs. Methods: We conducted a retrospective analysis of patients who underwent PVC ablation under fluoroscopy and non-fluoroscopy at two institutions. Results: A total of 41 cases were enrolled (male: 61%; mean age: 55 ). Twenty-five cases underwent ablation under fluoroscopy whereas 16 underwent non-fluoroscopy ablation. Acute success was seen in 88% of non-fluoroscopy cases compared to 87.5% in the fluoroscopy group ( p = 0.9). The PVC recurrence at 12 months was similar between both groups (non-fluoroscopy: 15% vs Fluoroscopy: 18%) ( p = 0.9). No complications occurred in any group. Conclusions: Fluoroless CA is an emerging technique in the treatment of LV summit/intramural PVCs that appears to have similar clinical outcomes and complications compared to conventional fluoroscopic procedures.

Radiofrequency Catheter Ablation of Ventricular Tachycardia in Patients With an Implantable Defibrillator. Long-Term Follow-up

2005 ◽  
Vol 58 (5) ◽  
pp. 491-498
Author(s):  
Ángela M. Montijano Cabrera ◽  
Alberto Barrera Cordero ◽  
Javier Alzueta Rodríguez ◽  
Juan Robledo Carmona ◽  
Eduardo de Teresa Galván
Keyword(s):  
Ventricular Tachycardia ◽  
Catheter Ablation ◽  
Radiofrequency Catheter Ablation ◽  
Implantable Defibrillator ◽  
Long Term Follow Up
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