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Cheng D, Yu J, Chen K, Li X, Zhang F, Ju W, Chen H, Yang G, Li M, Gu K, Wang X, Xie X, Wu Y, Zhou J, Zhou X, Kojodjojo P, Yang B, Chen M. Mid-term outcome of catheter ablation of idiopathic non-outflow tract ventricular arrhythmias. BMC Cardiovasc Disord 2024; 24:37. [PMID: 38191302 PMCID: PMC10775500 DOI: 10.1186/s12872-023-03702-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 12/28/2023] [Indexed: 01/10/2024] Open
Abstract
BACKGROUND Catheter ablation is recommended in patients with frequent and symptomatic ventricular arrhythmias (VAs) in an otherwise normal heart. Right or left outflow tract (OT) are the most common origins, and catheter ablation is highly effective with low complication rates. However, outcome of catheter ablation of VAs other than the OT (non-OTVAs) is limited. The aim of this single-center study was to assess the safety and mid-term outcome of catheter ablation for non-OTVAs. METHOD AND RESULTS From 2013 to 2018, 251 patients who underwent catheter ablation for idiopathic non-OTVAs were enrolled and grouped according to the origins including His-Purkinje system (HPS, n = 108), papillary muscle / moderator band (PM/MB, n = 47), tricuspid annulus (TA, n = 70), and mitral annulus (MA, n = 26), 244 (97.2%) had acute elimination of VAs. The time of VAs recurrence of the single procedure was 1.69 (0.12,9.72) months, with 66% occurring within the first 3 months. The recurrence rate was significantly higher in the PM/MB group than in the TA (p = 0.025) and MA groups (p = 0.023). The single procedure success rate in all patients was 70.1%, in which 66.7%, 59.6%, 80%, and 76.9% were achieved in the HPS, PM/MB, TA, and MA groups, respectively (p = 0.284). After multiple procedures, the total success rate was 76.5% at the follow-up of 4.38 ± 2.42 years. The rate was significantly lower in the PM/MB group than in the TA group (p = 0.035). In subgroup analysis, no significant difference was observed in the recurrence rate of single procedure in patients with different VA origins within the PM/MB (log-rank test, p = 0.546). CONCLUSION Despite a certain percentage of recurrences observed in the mid-term follow-up, catheter ablation remained feasible and effective for idiopathic non-OTVAs.
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Affiliation(s)
- Dian Cheng
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, People's Republic of China
| | - Jinbo Yu
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, People's Republic of China
| | - Kanghui Chen
- Department of Cardiology, Jiangsu Province Hospital of Chinese Medicine, Nanjing, People's Republic of China
| | - Xiaorong Li
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, People's Republic of China
| | - Fengxiang Zhang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Weizhu Ju
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Hongwu Chen
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Gang Yang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Mingfang Li
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Kai Gu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Xuecheng Wang
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, People's Republic of China
| | - Xin Xie
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, People's Republic of China
| | - Yizhang Wu
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, People's Republic of China
| | - Jian Zhou
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, People's Republic of China
| | - Xiaoqian Zhou
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, People's Republic of China
| | - Pipin Kojodjojo
- Department of Cardiology, Ng Teng Fong General Hospital, Singapore, Singapore
| | - Bing Yang
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, People's Republic of China.
| | - Minglong Chen
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
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Wei HQ, Chen W, Luo S, Liao Z, Fang X, Liao H, Sun Q, Guo XG, Yang JD, Liang JJ, Wu S, Xue Y, Ma J, Zhan X. Comparison of strategies for catheter ablation of left posterior fascicular ventricular tachycardia. Europace 2023; 25:euad339. [PMID: 37971899 PMCID: PMC10653165 DOI: 10.1093/europace/euad339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/07/2023] [Indexed: 11/19/2023] Open
Abstract
AIMS Traditional ablation strategies including targeting the earliest Purkinje potential (PP) during left posterior fascicular (LPF) ventricular tachycardia (VT) or linear ablation at the middle segment of LPF during sinus rhythm are commonly used for the treatment of LPF-VT. Catheter ablation for LPF-VT targeting fragmented antegrade Purkinje (FAP) potential during sinus rhythm is a novel approach. We aimed to compare safety and efficacy of different ablation strategies (FAP ablation vs. traditional ablation) for the treatment of LPF-VT. METHODS AND RESULTS Consecutive patients with electrocardiographically documented LPF-VT referred for catheter ablation received either FAP ablation approach or traditional ablation approach. Electrophysiological characteristics, procedural complications, and long-term clinical outcome were assessed. A total of 189 consecutive patients who underwent catheter ablation for LPF-VT were included. Fragmented antegrade Purkinje ablation was attempted in 95 patients, and traditional ablation was attempted in 94 patients. Acute ablation success with elimination of LPF-VT was achieved in all patients. Left posterior fascicular block occurred in 11 of 95 (11.6%) patients in the FAP group compared with 75 of 94 (79.8%) patients in the traditional group (P < 0.001). Fragmented antegrade Purkinje ablation was associated with significant shorter procedure time (94 ± 26 vs. 117 ± 23 min, P = 0.03) and fewer radiofrequency energy applications (4.1 ± 2.4 vs. 6.3 ± 3.5, P = 0.003) compared with the traditional group. One complete atrioventricular block and one left bundle branch block were seen in the traditional group. Over mean follow-up of 65 months, 89 (93.7%) patients in the FAP group and 81 (86.2%) patients in the traditional group remained free of recurrent VT off antiarrhythmic drugs (P = 0.157). CONCLUSION Left posterior fascicular-ventricular tachycardia ablation utilizing FAP and traditional ablation approaches resulted in similar acute and long-term procedural outcomes. Serious His-Purkinje injury did occur infrequently during traditional ablation. The use of FAP ablation approach was associated with shorter procedure time and fewer radiofrequency energy applications, especially for non-inducible patients.
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Affiliation(s)
- Hui-Qiang Wei
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, No. 102 Zhongshan 2nd Rd, Yuexiu District, 510010 Guangzhou, China
| | - Wanwen Chen
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, No. 102 Zhongshan 2nd Rd, Yuexiu District, 510010 Guangzhou, China
| | - Sini Luo
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, No. 102 Zhongshan 2nd Rd, Yuexiu District, 510010 Guangzhou, China
| | - Zili Liao
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, No. 102 Zhongshan 2nd Rd, Yuexiu District, 510010 Guangzhou, China
| | - Xianhong Fang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, No. 102 Zhongshan 2nd Rd, Yuexiu District, 510010 Guangzhou, China
| | - Hongtao Liao
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, No. 102 Zhongshan 2nd Rd, Yuexiu District, 510010 Guangzhou, China
| | - Qi Sun
- Arrhythmia Center, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, No.167 Beilishi Rd. Xicheng District, 100037 Beijing, China
| | - Xiao-Gang Guo
- Arrhythmia Center, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, No.167 Beilishi Rd. Xicheng District, 100037 Beijing, China
| | - Jian-Du Yang
- Arrhythmia Center, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, No.167 Beilishi Rd. Xicheng District, 100037 Beijing, China
| | - Jackson J Liang
- Division of Cardiovascular Medicine, Cardiac Arrhythmia Service, University of Michigan Health System, Ann Arbor, MI, USA
| | - Shulin Wu
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, No. 102 Zhongshan 2nd Rd, Yuexiu District, 510010 Guangzhou, China
| | - Yumei Xue
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, No. 102 Zhongshan 2nd Rd, Yuexiu District, 510010 Guangzhou, China
| | - Jian Ma
- Arrhythmia Center, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, No.167 Beilishi Rd. Xicheng District, 100037 Beijing, China
| | - Xianzhang Zhan
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, No. 102 Zhongshan 2nd Rd, Yuexiu District, 510010 Guangzhou, China
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Wei HQ, Liao Z, Liang Y, Fang X, Liao H, Deng H, Wei W, Huang Y, Liu Y, Liu F, Lin W, Liang JJ, Xue Y, Wu S, Zhan X. Electrophysiological characteristics and long-term outcome of substrate-based catheter ablation for left posterior fascicular ventricular tachycardia targeting fragmented antegrade Purkinje potentials during sinus rhythm. Europace 2023; 25:1008-1014. [PMID: 36610066 PMCID: PMC10062339 DOI: 10.1093/europace/euac265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 12/12/2022] [Indexed: 01/09/2023] Open
Abstract
AIMS The aim of this study was to investigate the electrophysiological characteristics and long-term outcome of patients undergoing substrate-based ablation of left posterior fascicular ventricular tachycardia (LPF-VT) guided by targeting of fragmented antegrade Purkinje potentials (FAPs) during sinus rhythm. METHODS AND RESULTS This study retrospectively analysed 50 consecutive patients referred for ablation. Substrate mapping during sinus rhythm was performed to identify the FAP that was targeted by ablation. FAPs were recorded in 48 of 50 (96%) patients during sinus rhythm. The distribution of FAPs was located at the proximal segment of posterior septal left ventricle (LV) in two (4.2%) patients, middle segment in 33 (68.8%) patients, and distal segment in 13 (27.1%) patients. In 32 of 48 (66.7%) patients, the FAP displayed a continuous multicomponent fragmented electrogram, while a fragmented, split, and uncoupled electrogram was recorded in 16 (33.3%) patients. Entrainment attempts at FAP region were performed successfully in seven patients, demonstrating concealed fusion and the critical isthmus of LPF-VT. Catheter ablation targeting at the FAPs successfully terminated the LPF-VT in all 48 patients in whom they were seen. Left posterior fascicular (LPF) block occurred in four (8%) patients after ablation. During a median follow-up period of 61.2 ± 16.8 months, 47 of 50 (94%) patients remained free from recurrent LPF-VT. CONCLUSION Ablation of LPF-VT targeting FAP during sinus rhythm results in excellent long-term clinical outcome. FAPs were commonly located at the middle segment of posterior septal LV. Region with FAPs during sinus rhythm was predictive of critical site for re-entry.
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Affiliation(s)
- Hui-Qiang Wei
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Zili Liao
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Yuanhong Liang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Xianhong Fang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Hongtao Liao
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Hai Deng
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Wei Wei
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Yingjie Huang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Yang Liu
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Fangzhou Liu
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Weidong Lin
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Jackson J Liang
- Division of Cardiovascular Medicine, Cardiac Arrhythmia Service, University of Michigan Health System, Ann Arbor, MI, USA
| | - Yumei Xue
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Shulin Wu
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
| | - Xianzhang Zhan
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No.106 Zhongshan 2nd Road, Yuexiu District, 510000 Guangzhou, China
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Chen H, Xiao F, Ju W, Yang G, Zhang F, Gu K, Li M, Liu H, Wang Z, Sharma D, Cao K, Chen M. Premature Ventricular Contractions From the Left Anterior Fascicle: Electrocardiographic and Electrophysiological Characteristics, Mapping Strategy, and Immediate and Long-Term Catheter Ablation Results. Front Cardiovasc Med 2022; 9:816237. [PMID: 35433863 PMCID: PMC9008246 DOI: 10.3389/fcvm.2022.816237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 03/03/2022] [Indexed: 11/29/2022] Open
Abstract
Background Left anterior fascicle (LAF) premature ventricular contractions (PVC) are rarely reported. We described the electrocardiographic and electrophysiological characteristics of PVCs originating from LAF and evaluated the results of catheter ablation. Methods The baseline AH and HV intervals were recorded during normal sinus rhythm (NSR), and the HV interval of LAF-PVC was measured during the procedure. During the index procedure, the conduction interval from the earliest Purkinje potential (PP) site to the His was labeled as time A, the conduction interval from the earliest site to the onset of the QRS as time B, then the HV interval during NSR (HVNSR) is A + B, and the HV interval during PVC (HVPVC) is B-A; a predicted PP time was calculated using HVNSR and HVPVC. The calculated formula is as follows: Predicted target PP = (HVNSR + HVPVC)/2. During the repeat procedure, the mapping strategy only focuses on the earliest retrograde PP due to the injury or block of LAF sustained at the index procedure. Results Notably, 24 patients with LAF-PVC were included. The ECG characteristics of PVC exhibited right bundle branch block (RBBB) morphology with right-axis deviation (RAD) in 18 patients and only RAD in 6 patients. The QRS durations of NSR and PVC were 78.8 ± 7.9 and 106.8 ± 12.3 ms, respectively. There was no significant difference between the predicted and mapped PP site (31.5 ± 8.1 vs. 30.6 ± 7.8 ms; P = 0.17). There was a significant difference between the mean axis deviation before and after ablation (46.3 ± 25.4° vs. 18.3 ± 44.1°; P = 0.001); however, only 10 patients had a complete LAF block. Eight patients had a recurrence, the QRS morphology of LAF-PVC became narrower (95.9 ± 17.2 vs. 105.3 ± 16.9 ms, P = 0.003), and 4 patients’s PVC QRS morphology was similar to NSR. During the repeat procedure, the earliest retrograde PP interval was longer than the index procedure in four patients (12.0 ± 1.9 vs. 37.8 ± 1.1 ms; P < 0.001). Conclusion The target PP site for ablation of the LAF region can be calculated using the HV interval during NSR and PVC at the index procedure. The mapping strategy at repeat procedures focused on the earliest retrograde PP interval.
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Affiliation(s)
- Hongwu Chen
- Cardiology Division, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Fangyi Xiao
- Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Weizhu Ju
- Cardiology Division, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Gang Yang
- Cardiology Division, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Fengxiang Zhang
- Cardiology Division, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kai Gu
- Cardiology Division, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Mingfang Li
- Cardiology Division, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hailei Liu
- Cardiology Division, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zidun Wang
- Cardiology Division, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Dinesh Sharma
- Division of Cardiology, Naples Community Hospital, Naples, FL, United States
| | - Kejiang Cao
- Cardiology Division, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Minglong Chen
- Cardiology Division, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Minglong Chen,
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Sun M, Wang J, Wang Z, Liang M, Yang G, Jin Z, Liang Y, Han Y. The change of cardiac axis deviation in catheter ablation of verapamil-sensitive idiopathic left ventricular tachycardia. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2021; 44:685-692. [PMID: 33559892 DOI: 10.1111/pace.14192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/07/2021] [Accepted: 02/07/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND The underlying mechanism of verapamil-sensitive idiopathic left ventricular tachycardia (ILVT) has been postulated to be reentrant activation in the Purkinje fiber network of the left posterior fascicle or the left anterior fascicle (LAF). However, changing of cardiac axis deviation in sinus rhythm (SR) or during ILVT after radiofrequency catheter ablation (RFCA) has been rarely analyzed. METHODS Of the 232 patients with sustained ILVT induced and surface electrocardiogram (ECG) in SR recorded before and after RFCA, the changes of ECG morphology in SR and during ILVT were analyzed. RESULTS The surface ECG in SR changed in 114 (49.1%) patients after RFCA. ILVT could still be induced in 27 (23.7%) patients. In comparison with the original ILVT, three forms of ECG morphology were observed. In eight patients, the ILVT morphology was unchanged. In the 13 patients with ILVT axis deviation conversion after ablation, the successful target was more proximal. In the six patients with ILVT morphology change but without axis deviation conversion after ablation, the successful ablation site was more distal. Among 15 patients with recurrent ILVT during follow-up, seven patients had previous axis deviation changes in SR after RFCA, the changes maintained in four patients and recovered in three patients. CONCLUSIONS The morphology changes on surface ECG in SR after RFCA would not be a necessary prerequisite or a good endpoint for ILVT ablation. To analyze ILVT morphology changes after ablation would help to further clarify an appropriate approach for catheter ablation of ILVT.
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Affiliation(s)
- Mingyu Sun
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, China
| | - Jian Wang
- Department of Cardiology, Zibo Central Hospital, Zibo, China
| | - Zulu Wang
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, China
| | - Ming Liang
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, China
| | - Guitang Yang
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, China
| | - Zhiqing Jin
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, China
| | - Yanchun Liang
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, China
| | - Yaling Han
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, China
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Zhou G, Lu X, Nie Z, Chen S, Wei Y, Cai L, Xu J, Ding Y, Peng S, Wu X, Wang Z, Liu S. QRS complex axis deviation changing in catheter ablation of left fascicular ventricular tachycardia. Europace 2020; 22:1688-1696. [PMID: 32888292 DOI: 10.1093/europace/euaa175] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 06/03/2020] [Indexed: 11/13/2022] Open
Abstract
Abstract
Aims
The mechanisms of the QRS complex axis deviation changing of idiopathic left fascicular ventricular tachycardia (FVT) during or after radiofrequency catheter ablation were investigated in this study, which were still not well defined.
Methods and results
In the index procedure, FVTs characterized by right bundle branch block configuration and left-axis deviation (LAD-FVT) were ablated at the VT exit site guided by the earliest ventricular activation with fused presystolic Purkinje potential (PP) in 234 consecutive patients. A new type of FVT characterized by right-axis deviation (RAD-FVT) was identified after successful elimination of the LAD-FVT in 12 patients, including 9 patients during the index procedure and 3 patients during follow-up. The QRS duration of RAD-FVT was shorter than that of LAD-FVT (115.3 ± 15.2 vs. 125.3 ± 16.4 ms, P = 0.006). The RAD-FVTs showed an earliest ventricle activation site localized at anterior fascicle area in 11 patients and anterior-median fascicle area in 1. However, the earliest PP during the RAD-FVT was still identified within the posterior fascicular network. Elimination of the RAD-FVTs was successfully achieved by applying radiofrequency current at a more proximal site within the left posterior fascicular network guided by the earliest PP. After a mean of 1.6 ± 0.8 ablation procedures and median follow-up of 132 (range 19–216) months since the last procedure, no recurrence was observed in any patients.
Conclusion
The axis deviation changing of QRS complex in FVT may be attributed to the different exit sites of the reentry.
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Affiliation(s)
- Genqing Zhou
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 85, Wujin Road, Shanghai 200080, China
| | - Xiaofeng Lu
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 85, Wujin Road, Shanghai 200080, China
| | - Zhenning Nie
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Songwen Chen
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 85, Wujin Road, Shanghai 200080, China
| | - Yong Wei
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 85, Wujin Road, Shanghai 200080, China
| | - Lidong Cai
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 85, Wujin Road, Shanghai 200080, China
| | - Juan Xu
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 85, Wujin Road, Shanghai 200080, China
| | - Yu Ding
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 85, Wujin Road, Shanghai 200080, China
| | - Shi Peng
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 85, Wujin Road, Shanghai 200080, China
| | - Xiaoyu Wu
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 85, Wujin Road, Shanghai 200080, China
| | - Zulu Wang
- Department of Cardiology, General Hospital of Northern Theater Command, No. 83, Wenhua Road, Shenyang 110016, China
| | - Shaowen Liu
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 85, Wujin Road, Shanghai 200080, China
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Orlov MV, Jahangir A, McKelvey D, Armstrong J, Maslov M, Monin AJ, Koulouridis I, Casavant D, Wylie JV. His bundle pacing insights from electroanatomical mapping: Topography and pacing targets. J Cardiovasc Electrophysiol 2020; 31:2737-2743. [PMID: 32666617 DOI: 10.1111/jce.14672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/05/2020] [Accepted: 07/06/2020] [Indexed: 01/07/2023]
Abstract
OBJECTIVES To characterize 3D electroanatomical mapping (EAM) of the His bundle (HB) region. BACKGROUND Visualization of selective (S) and nonselective (NS) HB capture areas by EAM has not been described and may help guide HB pacing (HBP). METHODS EAM was performed via NavX system in 17 patients (pts) undergoing HBP. HB cloud, S-HB, NS-HB, and right bundle (RB) capture areas were mapped. RESULTS S-HBP areas were identified in 11, NS-HBP in 14, and RB in 11 pts. Two NS-HBP areas (upper and lower) either separated by S-HBP (8 pts) or almost contiguous (5 pts) were observed. S-HBP area measured: 1.1 ± 0.9 cm2 , NS upper: -1.2 ± 0.9 cm2 , NS lower: -1.2 ± 0.9 cm2 , RB: -1.7 ± 1.3 cm2 , total His cloud: -4.1 ± 2.7 cm2 . Electrocardiogram (ECG) pacemaps were different between upper and lower NS-HBP areas in 13/14 pts (p = .006). ECG differences between NS clouds were present in inferior leads in 9 pts (more negative QRS complex from lower NS area) and in precordial leads in 5 pts. There was no correlation between HBP lead location and capture threshold. R-wave amplitude was higher at more distal locations on HB cloud (p = .02). CONCLUSION (1) Pacemapping identifies distinct regions that may correspond to HB anatomy. (2) A linear S-HBP area is typically surrounded by two separate NS areas. (3) Pace-map ECGs from upper and lower NS-HBP areas have different morphologies. (4) These EAM features and pace-mapping may be helpful to the implanter.
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Affiliation(s)
- Michael V Orlov
- Department of Medicine, Division of Cardiology, Section of Electrophysiology, Steward St. Elizabeth's Medical Center/Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Ahad Jahangir
- Department of Medicine, Division of Cardiology, Section of Electrophysiology, Steward St. Elizabeth's Medical Center/Tufts University School of Medicine, Boston, Massachusetts, USA
| | | | - James Armstrong
- Department of Medicine, Division of Cardiology, Section of Electrophysiology, Steward St. Elizabeth's Medical Center/Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Mikhail Maslov
- Department of Medicine, Division of Cardiology, Section of Electrophysiology, Steward St. Elizabeth's Medical Center/Tufts University School of Medicine, Boston, Massachusetts, USA
| | - A J Monin
- Boston Scientific Corporation, Marlborough, Massachusetts, USA
| | - Ioannis Koulouridis
- Department of Medicine, Division of Cardiology, Section of Electrophysiology, Steward St. Elizabeth's Medical Center/Tufts University School of Medicine, Boston, Massachusetts, USA
| | - David Casavant
- Boston Scientific Corporation, Marlborough, Massachusetts, USA
| | - John V Wylie
- Department of Medicine, Division of Cardiology, Section of Electrophysiology, Steward St. Elizabeth's Medical Center/Tufts University School of Medicine, Boston, Massachusetts, USA
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Transcatheter radiofrequency ablation using near-zero fluoroscopy in children with fascicular ventricular tachycardia: a single-centre experience. Cardiol Young 2020; 30:779-784. [PMID: 32383414 DOI: 10.1017/s104795112000102x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Fascicular tachycardia is a common form of sustained idiopathic left ventricular tachycardia. This study aimed to achieve successful results with catheter ablation procedures performed through three-dimensional electroanatomic mapping using near-zero fluoroscopy in fascicular tachycardia patients. METHODS AND RESULTS In this study, we included 33 consecutive children with fascicular tachycardia, for whom we performed a transcatheter radiofrequency ablation procedure using the EnSite® system. Activation mapping was performed in all patients during tachycardia, and the earliest presystolic purkinje potentials were the target site for radiofrequency lesions. RESULTS Twenty-five patients were male, and eight were female. The mean weight of the patients was 39.6 ± 10.4 kg, and the mean age was 13.6 ± 2.5 years. The mean procedure time was 121.3 ± 44.3 minutes. The mean follow-up period was 18.4 ± 6.5 months. No fluoroscopy was needed in 30 patients. The mean fluoroscopy time in the remaining patients was 166.6 ± 80 seconds. All of the patients had left posterior fascicular tachycardia except for one who had left anterior fascicular tachycardia. The acute success rate was perfect (100%). No patients developed left bundle branch block or complete atrioventricular block. Recurrence developed in one patient. CONCLUSION We suggest that radiofrequency ablations via an electroanatomic mapping system are quite safe and effective, with high success rates in paediatric patients with fascicular tachycardia. This method has the advantage of avoiding ionising radiation exposure for both the patient and operator, thus reducing the lifetime risk of malignancy in the paediatric population.
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Catheter ablation of left posterior fascicular ventricular tachycardia in children with limited fluoroscopy exposure. Cardiol Young 2019; 29:793-799. [PMID: 31169097 DOI: 10.1017/s1047951119000830] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
INTRODUCTION Catheter ablation of left posterior fascicular ventricular tachycardia in the pediatric population remains challenging, and most studies about this topic have been conducted on adult patients. This study aimed to assess the clinical presentation features and outcomes of catheter ablations performed using limited fluoroscopy with three-dimensional electroanatomic mapping system guidance in a pediatric left posterior fascicular ventricular tachycardia patient group. METHODS A total of 20 consecutive patients undergoing left posterior fascicular ventricular tachycardia ablation at a single tertiary centre were enrolled. All children with left posterior fascicular ventricular tachycardia underwent electrophysiological studies using the EnSite NavX system guidance. Ablations were performed during the sinus rhythm based on the Purkinje potentials in all patients. RESULTS The mean patient age was 12.7 years (range 2-16), and the mean patient weight was 51 kg (range 11-84). The mean procedure and median fluoroscopy times were 143.1 minutes and 3.4 minutes, respectively. No fluoroscopy was used in three patients. Acute success was achieved in 19 patients (95%). During a mean follow-up of 38.6 ± 19.35 months, left posterior fascicular ventricular tachycardia recurred in four patients (20%). Repeat ablations were performed successfully in those patients who developed recurrences. No complications were seen. CONCLUSIONS Catheter ablation of left posterior fascicular ventricular tachycardia in children can be performed safely and effectively with low fluoroscopy exposure using a three-dimensional electroanatomic mapping system.
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Creta A, Chow AW, Sporton S, Finlay M, Papageorgiou N, Honarbakhsh S, Dhillon G, Graham A, Patel KH, Dhinoja M, Earley MJ, Hunter RJ, Lowe M, Rowland E, Segal OR, Calabrese V, Ricciardi D, Lambiase PD, Schilling RJ, Providência R. Catheter ablation for fascicular ventricular tachycardia: A systematic review. Int J Cardiol 2019; 276:136-148. [DOI: 10.1016/j.ijcard.2018.10.080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/03/2018] [Accepted: 10/24/2018] [Indexed: 11/24/2022]
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Michowitz Y, Belhassen B. New Insights on Verapamil-Sensitive Idiopathic Left Fascicular Tachycardia. J Electrocardiol 2018; 51:874-878. [PMID: 30177332 DOI: 10.1016/j.jelectrocard.2018.06.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 06/12/2018] [Indexed: 10/14/2022]
Abstract
Verapamil-sensitive left fascicular monomorphic ventricular tachycardia (LF-VT) was first described ~4 decades ago. Our knowledge regarding this arrhythmia is evolving continuously. The current review aims to highlight up to date aspects of this arrhythmia focusing on its ECG recognition, new considerations of the reentrant circuit, ablation targets in inducible and non-inducible patients and the approach to LF-VT with multiform morphology.
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Affiliation(s)
- Yoav Michowitz
- The Department of Cardiology, Tel-Aviv Sourasky Medical Center and Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Bernard Belhassen
- The Department of Cardiology, Tel-Aviv Sourasky Medical Center and Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
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