Radiofrequency Ablation of Symptomatic but Benign Ventricular Arrhythmias (original) (raw)
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Journal of Pharmacy and Pharmacology 5 (2017) 5-8, 2017
TC-RF (transcatheter radiofrequency) ablation has an important role in the treatment of SVA (supraventricular arrhythmias). The indication to TC-RF ablation is usually made to improve the patient's quality of life through the elimination of the arrhythmic substrate. The objective of this study is to make a brief review of the literature and to report the Electrophysiology Unit experience of the Cardiovascular Department of the University Hospital of Trieste. From the study, it can be found that about one thousand of patients are visited annually in the Cardiovascular Department of the University Hospital of Trieste (1,019 ± 71/year over the past five years). The acute success rate of atrial fibrillation and flutter ablation procedures was respectively 93.9% and 97.9% with a relapse rate of 30% and 10% at 12 month. Accessory pathways and nodal atrio ventricular re-entry tachycardia ablation procedures had an acute success rate of respectively 91.1% and 96.6% with a relapse rate of 10% at 12 months. The overall complication rate was 5%. Catheter ablation is an effective therapy for SVA treatment. It can often be definitive, and it is generally superior to drug therapy, with a low complication rate. The improvement in patients' quality of life is associated with a reduced need for access to health services.
Ablation for the treatment of arrhythmias
Proceedings of The IEEE, 1996
Surgical ablation of supraventricular cardiac arrhythmias has been rendered obsolete by the various modalities of electromagnetic transcatheter ablation techniques. Any ablation technique, including surgeiy, is essentially the controlled destruction of a substrate which is acting as a source or a critical circuit limb of an arrhythmia. The most success@ and popular modality is radiofrequency (RF) ablation although other modalities such as dc shock, laser, microwave, and ultrasound are also being investigated. This review discusses the role of electrical ablation, especially RF ablation, as a treatment for supraventricular tachyarrhythmia and reviews the engineering principles and biological responses to ablation. A brief synopsis of the results of electrical catheter ablation procedures is presented. RF catheter ablation is a successjid technique in clinical arrhythmia management, with reported success rates of greater than 95% in many series. The indications for clinical RF catheter ablation continue to broaden. Publisher Item Identifier S 0018-9219(96)01697-0.
The Role of Radiofrequency Catheter Ablation in the Treatment of Nonischemic Ventricular Tachycardia
SUMMARY ñ Radiofrequency catheter ablation can be used for the treatment of different patient groups with nonischemic ventricular tachycardia (VT). Concerning the small area of induced ventricular injury, a high degree success is expected in patients with idiopathic VT and in patients with bundle branch reen- trant VT. The long-term success rate of radiofrequency ablation in the cure of idiopathic VT and bundle branch reentrant VT is about 90% and 100%, respectively. Radiofrequency ablation of VT in arrhythmogen- ic right ventricular dysplasia (ARVD) can be effective in patients with localized disease and single VT origin. In patients with more extensive ARVD and/or pleomorphic VT, other therapeutic options should be considered. In patients with idiopathic dilated cardiomyopathy, radiofrequency ablation is not curative but may be used as an adjunctive therapy to reduce the frequency and severity of VT. By using the new mapping systems, the application of radiofrequency ablation is e...
Radiofrequency Ablation of Frequent Ventricular Arrhythmia Guided by Multielectrode Array Catheter
Argentine Journal of Cardiology, 2014
Background and objective: The non-contact mapping system with expandable balloon catheter allows ventricular arrhythmia mapping with few ectopic beats. The aim of this study was to analyze ablation results with this system. Methods: Patients with ventricular arrhythmia were prospectively and consecutively studied with the non-contact mapping system. results: The study included 10 patients, 8 women, with mean age of 45 years (range: 27 to 65). Arrhythmia origin was right ventricular outflow tract in 8 patients, right ventricular inflow tract in 1 and left ventricular outflow tract in 1. Acute success was obtained in 9/10 patients (90%). Mean follow-up was 6 months (range 1 to 16); 8 patients continued with obliterated arrhythmia without medication and 1 patient required pharmacologic treatment. The only complication was femoral arteriovenous fistula. Conclusions: The non-contact mapping system allows a highly efficient and safe approach of right ventricular arrhythmias. future studies with more patients and comparing with other methods may confirm these results.
Radiofrequency Catheter Ablation of Frequent Monomorphic Ventricular Ectopic Activity
Journal of Cardiovascular Electrophysiology, 1999
Ablation of Ventricular Ectopic Activity. Introduction: Frequent ventricular ectopic beats can result in severe symptoms and may even be incapacitating in some patients. Although radiofrequency catheter ablation is an effective and safe therapy for drug refractory idiopathic ventricular tachycardia, it has not been widely used in ventricular ectopy. The purpose of this study was: (1) tu assess the potential role of catheter ablation in eliminating monomorphic ventricular ectopy in symptomatic patients regarding feasibility and safety and (2) to determine the usefulness of various mapping strategies. Methods and Results: Forty-one patients with symptomatic ventricular ectopic activity (right ventricular origin in 23 patients, left ventricular origin in 18 patients) were enrolled. The mean frequency of ventricular ectopic beats was 1512 ± 583/hour documented by Holter ECG monitoring. These patients had previously been unable to tolerate or had been unsuccessfully treated with a mean of 3 ± 1 antiarrhythmic agents. The site of origin was mapped using earliest endocardial activation times, unipolar electrograms and pace mapping. Radiofrequency ablation was successful in 34 (83%) of 41 patients. Multivariate logistic regression analysis revealed pace mapping as the only independent predictor for a successful ablation site (P < O.OI). After a follow-up of 3 months, the overall success rate was 71%. The mean frequency of ventricular ectopic heats after successful ablation was 12 ± 10 ventricular premature beat/hour. Conclusion: Radiofrequency catheter ablation is an effective and safe treatment for frequent symptomatic drug refractory monomorphic ventricular ectopic activity. Pace mapping predicts best successful ablation of ventricular ectopic beats.
Radiofrequency ablation of Frequent Ventricular arrhythmia Guided by array Multielectrode Catheter
Revista Argentina de Cardiología, 2014
Background and objective: The non-contact mapping system with expandable balloon catheter allows ventricular arrhythmia mapping with few ectopic beats. The aim of this study was to analyze ablation results with this system. Methods: Patients with ventricular arrhythmia were prospectively and consecutively studied with the non-contact mapping system. results: The study included 10 patients, 8 women, with mean age of 45 years (range: 27 to 65). Arrhythmia origin was right ventricular outflow tract in 8 patients, right ventricular inflow tract in 1 and left ventricular outflow tract in 1. Acute success was obtained in 9/10 patients (90%). Mean follow-up was 6 months (range 1 to 16); 8 patients continued with obliterated arrhythmia without medication and 1 patient required pharmacologic treatment. The only complication was femoral arteriovenous fistula. Conclusions: The non-contact mapping system allows a highly efficient and safe approach of right ventricular arrhythmias. future studies with more patients and comparing with other methods may confirm these results.
Indian Pacing and Electrophysiology Journal, 2019
Ablation of premature ventricular complexes (PVCs) originating from left ventricular outflow tract (LVOT)/left ventricular summit (LVS) is challenging with considerable rate of failure. Recently, in a novel approach to ablation of these arrythmias, application of radiofrequency energy to anatomically opposite sites of presumed origin of arrythmia, has been associated with moderate procedure success. Although late elimination of PVCs that are persistent following an ablation procedure has been previously reported, this observation has not been studied sufficiently. In this report, firstly, we present three cases of lately eliminated LVS PVCs, then, we discuss possible mechanism of this observation and conclude that after an initial failed attempt of anatomic ablation, operators may choose a period of watchful waiting before attempting a redo procedure.
Kosuyolu Kalp Dergisi, 2013
Introduction: Radiofrequency ablation of tachyarrhythmia is effective in the treatment of tachycardia. In this study, we evaluated the results of radiofrequency catheter ablation of tachyarrhythmia. Patients and Methods: From December 2010 to January 2012, 114 consecutive patients with symptomatic drug-resistant typical slow-fast atrioventricular nodal reentrant tachycardia, 17 patients with atrioventricular reentrant tachycardia (five Wolf Parkinson White syndrome), eight patients with atrial tachycardia, seven patients with atrial flutter, five patients with right ventricular outflow tract tachycardia and three patients with atrial fibrillation underwent an invasive electrophysiology study and radiofrequency ablation.