Idiopathic premature ventricular contractions and ventricular tachycardias originating from the vicinity of tricuspid annulus: Results of radiofrequency catheter ablation in thirty-five patients

<p>Abstract</p> <p>Background</p> <p>In recent years, catheter ablation has increasingly been used for ablation of idiopathic premature ventricular complexes (PVCs) or ventricular tachycardias (IVTs). However, the mapping and catheter ablation of the arrhythmias origina...

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Main Authors: Yue-Chun Li, Wen-Wu Zhang, Na-Dan Zhou, Teng Zhang, Pin-Xiao Wang, Bei Ge, Jia Li, Kang-Ting Ji, Jia-Feng Lin
Format: Article
Language:English
Published: BMC 2012-07-01
Series:BMC Cardiovascular Disorders
Online Access:http://www.biomedcentral.com/1471-2261/12/32
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spelling doaj-0f614beb7b9e4d3eb63da6e5a20b89a92020-11-25T03:59:05ZengBMCBMC Cardiovascular Disorders1471-22612012-07-011213210.1186/1471-2261-12-32Idiopathic premature ventricular contractions and ventricular tachycardias originating from the vicinity of tricuspid annulus: Results of radiofrequency catheter ablation in thirty-five patientsYue-Chun LiWen-Wu ZhangNa-Dan ZhouTeng ZhangPin-Xiao WangBei GeJia LiKang-Ting JiJia-Feng Lin<p>Abstract</p> <p>Background</p> <p>In recent years, catheter ablation has increasingly been used for ablation of idiopathic premature ventricular complexes (PVCs) or ventricular tachycardias (IVTs). However, the mapping and catheter ablation of the arrhythmias originating from the vicinity of tricuspid annulus (TA) may not be fully understood. This study aimed to investigate electrophysiologic characteristics and effects of radiofrequency catheter ablation (RFCA) for patients with symptomatic PVCs and IVTs originating from the vicinity of TA.</p> <p>Methods</p> <p>Characteristics of body surface electrocardiogram (ECG) and electrophysiologic recordings were analyzed in 35 patients with symptomatic PVCs/ IVTs originating from the vicinity of TA. RFCA was performed using pace mapping and activation mapping.</p> <p>Results</p> <p>Among the 35 patients with PVCs/IVTs arising from the vicinity of TA, complete elimination of PVCs/IVTs could be achieved by RFCA in 32 patients (success rate 91.43%) during a median follow-up period of 21 months. PVCs/IVTs originating from the vicinity of TA had distinctive ECG characteristics that were useful for identifying the precise origin. An rS pattern was recorded in lead V1 in 93.1% of patients with PVCs/IVTs from the free wall of TA, vs 16.7% of patients with PVCs/IVTs from the septal TA, whereas a QS pattern in lead V1 occurred in 83.3% of patients with PVCs/IVTs from the septal TA vs 6.9% of patients with PVCs from the free wall of the TA. The precordial R wave transition occurred by lead V3 or earlier in all patients with PVCs/IVTs originating from the septal portion of the TA, as compared to transition beyond V3 in all patients with PVCs/IVTs from the free wall of the TA.</p> <p>Conclusions</p> <p>RFCA is an effective curative therapy for symptomatic PVCs/IVTs originating from the vicinity of TA. There are specific characteristics in ECG and the ablation site could be located by ECG analysis.</p> http://www.biomedcentral.com/1471-2261/12/32
collection DOAJ
language English
format Article
sources DOAJ
author Yue-Chun Li
Wen-Wu Zhang
Na-Dan Zhou
Teng Zhang
Pin-Xiao Wang
Bei Ge
Jia Li
Kang-Ting Ji
Jia-Feng Lin
spellingShingle Yue-Chun Li
Wen-Wu Zhang
Na-Dan Zhou
Teng Zhang
Pin-Xiao Wang
Bei Ge
Jia Li
Kang-Ting Ji
Jia-Feng Lin
Idiopathic premature ventricular contractions and ventricular tachycardias originating from the vicinity of tricuspid annulus: Results of radiofrequency catheter ablation in thirty-five patients
BMC Cardiovascular Disorders
author_facet Yue-Chun Li
Wen-Wu Zhang
Na-Dan Zhou
Teng Zhang
Pin-Xiao Wang
Bei Ge
Jia Li
Kang-Ting Ji
Jia-Feng Lin
author_sort Yue-Chun Li
title Idiopathic premature ventricular contractions and ventricular tachycardias originating from the vicinity of tricuspid annulus: Results of radiofrequency catheter ablation in thirty-five patients
title_short Idiopathic premature ventricular contractions and ventricular tachycardias originating from the vicinity of tricuspid annulus: Results of radiofrequency catheter ablation in thirty-five patients
title_full Idiopathic premature ventricular contractions and ventricular tachycardias originating from the vicinity of tricuspid annulus: Results of radiofrequency catheter ablation in thirty-five patients
title_fullStr Idiopathic premature ventricular contractions and ventricular tachycardias originating from the vicinity of tricuspid annulus: Results of radiofrequency catheter ablation in thirty-five patients
title_full_unstemmed Idiopathic premature ventricular contractions and ventricular tachycardias originating from the vicinity of tricuspid annulus: Results of radiofrequency catheter ablation in thirty-five patients
title_sort idiopathic premature ventricular contractions and ventricular tachycardias originating from the vicinity of tricuspid annulus: results of radiofrequency catheter ablation in thirty-five patients
publisher BMC
series BMC Cardiovascular Disorders
issn 1471-2261
publishDate 2012-07-01
description <p>Abstract</p> <p>Background</p> <p>In recent years, catheter ablation has increasingly been used for ablation of idiopathic premature ventricular complexes (PVCs) or ventricular tachycardias (IVTs). However, the mapping and catheter ablation of the arrhythmias originating from the vicinity of tricuspid annulus (TA) may not be fully understood. This study aimed to investigate electrophysiologic characteristics and effects of radiofrequency catheter ablation (RFCA) for patients with symptomatic PVCs and IVTs originating from the vicinity of TA.</p> <p>Methods</p> <p>Characteristics of body surface electrocardiogram (ECG) and electrophysiologic recordings were analyzed in 35 patients with symptomatic PVCs/ IVTs originating from the vicinity of TA. RFCA was performed using pace mapping and activation mapping.</p> <p>Results</p> <p>Among the 35 patients with PVCs/IVTs arising from the vicinity of TA, complete elimination of PVCs/IVTs could be achieved by RFCA in 32 patients (success rate 91.43%) during a median follow-up period of 21 months. PVCs/IVTs originating from the vicinity of TA had distinctive ECG characteristics that were useful for identifying the precise origin. An rS pattern was recorded in lead V1 in 93.1% of patients with PVCs/IVTs from the free wall of TA, vs 16.7% of patients with PVCs/IVTs from the septal TA, whereas a QS pattern in lead V1 occurred in 83.3% of patients with PVCs/IVTs from the septal TA vs 6.9% of patients with PVCs from the free wall of the TA. The precordial R wave transition occurred by lead V3 or earlier in all patients with PVCs/IVTs originating from the septal portion of the TA, as compared to transition beyond V3 in all patients with PVCs/IVTs from the free wall of the TA.</p> <p>Conclusions</p> <p>RFCA is an effective curative therapy for symptomatic PVCs/IVTs originating from the vicinity of TA. There are specific characteristics in ECG and the ablation site could be located by ECG analysis.</p>
url http://www.biomedcentral.com/1471-2261/12/32
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