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Shimizu Y, Yoshitani K, Kuriyama T, Mori K, Kujira K, Imai M, Fukuhara R, Taniguchi R, Toma M, Miyamoto T, Sato Y. The effect of an initial catheter ablation with an adjunctive ethanol infusion into the vein of Marshall on persistent atrial fibrillation. J Cardiovasc Electrophysiol 2024; 35:453-460. [PMID: 38282242 DOI: 10.1111/jce.16191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/03/2024] [Accepted: 01/12/2024] [Indexed: 01/30/2024]
Abstract
INTRODUCTION Some previous studies have reported that a first-step ethanol infusion into the vein of Marshall (EIVOM) with touch-up radiofrequency (RF) ablation can facilitate mitral isthmus (MI) block and improves the ablation outcomes in persistent atrial fibrillation (PeAF) patients. However, the effect of an initial RF ablation with an adjunctive EIVOM has not been fully investigated. METHODS This study enrolled 233 PeAF patients undergoing pulmonary vein isolation and linear ablation including an MI, roof line, and cavotricuspid isthmus ablation. An EIVOM was performed when endocardial ablation with or without coronary sinus ablation failed to create MI block. RESULTS Bidirectional MI block was achieved in 224 patients (96.1%). Among them, MI block was obtained by only RF ablation in 174/224 patients (77.7%) (RF group) and an adjunctive EIVOM was needed in 50/224 (22.3%) (EIVOM group). During the follow-up, 113 (64.9%) RF group patients were free from AF/atrial tachycardia compared to 41 (82.0%) EIVOM group patients (log-rank p = .045). In a multivariate Cox regression analysis, an adjunctive EIVOM was associated with a lower recurrence rate (hazard ratio = 0.39, 95% confidence interval = 0.17-0.78, p = .006). CONCLUSION An initial RF ablation with an adjunctive EIVOM strategy improved MI ablation's acute success rate and was associated with better clinical outcomes.
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Affiliation(s)
- Yukiko Shimizu
- Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | | | - Tomoari Kuriyama
- Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - Kazuki Mori
- Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - Kazuto Kujira
- Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - Masao Imai
- Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - Rei Fukuhara
- Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - Ryoji Taniguchi
- Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - Masanao Toma
- Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - Tadashi Miyamoto
- Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | - Yukihito Sato
- Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
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Ge W, Li T, Lu Y, Jiang J, Tung T, Yan S. Efficacy and feasibility of vein of Marshall ethanol infusion during persistent atrial fibrillation ablation: A systematic review and meta-analysis. Clin Cardiol 2024; 47:e24178. [PMID: 37933170 PMCID: PMC10766122 DOI: 10.1002/clc.24178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/30/2023] [Accepted: 10/16/2023] [Indexed: 11/08/2023] Open
Abstract
BACKGROUND Catheter ablation (CA) is currently used to treat persistent atrial fibrillation (PeAF). However, its effectiveness is limited. This study aimed to estimate the effectiveness of the vein of Marshall absolute ethanol injection (VOM-EI) for PeAF ablation. HYPOTHESIS Adjunctive vein of Marshall ethanol injection (VOM-EI) strategies are more effective than conventional catheter ablation (CA) and have similar safety outcomes. METHODS We extensively searched the literature for studies evaluating the effectiveness and safety of VOM-EI + CA compared with CA alone. The primary endpoint was the rate of acute bidirectional block of the isthmus of the mitral annulus (MIBB). The secondary endpoints were atrial fibrillation (AF) or atrial tachycardia (AT) recurrence over 30 seconds after a 3-month blanking period. Weighted pooled risk ratios (RRs) and corresponding 95% confidence intervals (CIs) were calculated using a random effects model. RESULTS Based on the selection criteria, nine studies were included in this systematic review, including patients with AF (n = 2508), persistent AF (n = 1829), perimitral flutter (n = 103), and perimitral AT (n = 165). There were 1028 patients in the VOM-EI + CA group and 1605 in the CA alone group. The VOM-EI + CA group showed a lower rate of AF/AT relapse (RR = 0.70; 95% CI = 0.53-0.91; p = .008) and a higher rate of acute MIBB (RR = 1.29; 95% CI = 1.11-1.50; p = .0007) than the CA alone group. CONCLUSION Our meta-analysis revealed that adjunctive VOM-EI strategies are more effective than conventional CA and have similar safety outcomes.
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Affiliation(s)
- Wei‐Li Ge
- Department of CardiologyShandong Provincial Qianfoshan HospitalShandong UniversityJinanShandongChina
- Department of CardiologyTaizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical UniversityZhejiangChina
| | - Tao Li
- Department of CardiologyTaizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical UniversityZhejiangChina
| | - Yi‐Fei Lu
- Department of CardiologyTaizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical UniversityZhejiangChina
| | - Jian‐Jun Jiang
- Department of CardiologyTaizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical UniversityZhejiangChina
| | - Tao‐Hsin Tung
- Evidence‐Based Medicine Center, Taizhou Hospital of Zhejiang ProvinceWenzhou Medical UniversityLinhaiChina
- Department of UrologyTaizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Enze Hospital, Taizhou Enze Medical Center (Group), Affilitated to Hangzhou Medical CollegeTaizhouZhejiangChina
- Key Laboratory of Evidence‐Based Radiology of TaizhouLinhaiZhejiangChina
| | - Su‐Hua Yan
- Department of CardiologyShandong Provincial Qianfoshan HospitalShandong UniversityJinanShandongChina
- Department of CardiologyShandong Provincial Qianfoshan HospitalJinanChina
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Ishimura M, Yamamoto M, Himi T, Kobayashi Y. Comparison of the effect of ethanol infusion into the vein of Marshall between with and without collateral veins. J Cardiovasc Electrophysiol 2024; 35:25-34. [PMID: 37890043 DOI: 10.1111/jce.16115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/30/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023]
Abstract
BACKGROUND Despite the potential benefits of ethanol infusion into the vein of Marshall (EIVOM) for atrial fibrillation (AF) ablation, concerns about its reversible and unpredictable effects persist. OBJECTIVE To assess the effectiveness of EIVOM in the vein of Marshall (VOM) with collateral veins (CVs) during mitral isthmus and AF ablation. METHODS We included 142 AF patients. EIVOM was performed before radiofrequency ablation, and low-voltage areas (<0.5 mV) were measured before, immediately after, and 1 h after EIVOM. RESULTS Among the 142 patients, 93 (65%) underwent EIVOM, and among these, 35 (37%) were found to have CVs. In the VOM with CVs group, areas with low voltage measured 0 (0-1.85) cm2 before EIVOM, 6.9 (4.1-11.2) cm2 immediately after EIVOM, and 5.7 (3.5-10.6) cm2 1 h after EIVOM. Conversely, in the group designated as VOM without CVs-from which the nine leakage cases were excluded-the areas measured 0 (0-1.35) cm2 , 5.5 (2.6-11.8) cm2 , and 4.7 (1.8-13.5) cm2 at the respective time points. MI line block was fully achieved in 89% (31/35) of cases in the VOM with CVs group and 88% (44/49) in the VOM without CVs groups (p = .94). There was no significant difference in the outcome of AF ablation between these groups (log-rank p = .73). Additionally, no significant difference was observed between EIVOM (+) and EIVOM (-) groups (log-rank p = .59). CONCLUSION EIVOM effectively creates MI line block, and its beneficial effects are sustained for at least 1 h after the procedure despite the low-voltage areas showing a slight reduction in size.
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Affiliation(s)
| | - Masashi Yamamoto
- Department of Cardiology, Kimitsu Central Hospital, Kisarazu, Japan
| | - Toshiharu Himi
- Department of Cardiology, Kimitsu Central Hospital, Kisarazu, Japan
| | - Yoshio Kobayashi
- Department of Cardiology, Chiba University Hospital, Chiba, Japan
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Li J, Cui S, Song H, Cui L, Yu H, Chu Y, Dong S. A novel stepwise catheter ablation method of the mitral isthmus for persistent atrial fibrillation: efficacy and reproducibility. BMC Cardiovasc Disord 2023; 23:466. [PMID: 37715135 PMCID: PMC10504774 DOI: 10.1186/s12872-023-03490-7] [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: 07/06/2023] [Accepted: 09/01/2023] [Indexed: 09/17/2023] Open
Abstract
BACKGROUND Ethanol infusion of the vein of Marshall (EI-VOM) has been widely used to facilitate mitral isthmus (MI) ablation. According to the literature, the success rate of achieving a bidirectional conduction block across the MI ranges from 51 to 96%, with no standardized strategy or method available for cardiac electrophysiologists. OBJECTIVES This study aimed to introduce and evaluate a novel ablation method of MI. METHODS Consecutive patients with persistent atrial fibrillation (PeAF) that underwent catheter ablation were included. The MI ablation procedure followed a stepwise approach. In step 1, ethanol infusion of the vein of Marshall (EI-VOM) was performed. In step 2, a "V-shape" endocardial linear ablation connecting the left inferior pulmonary vein (LIPV) to mitral annulus (MA) was performed. In step 3, earliest activation sites(EASs) near the ablation line were identified using activation mapping followed by reinforced ablation. In step 4, precise epicardial ablation was performed, with the catheter introduced into the coronary sinus(CS) to target key ablation targets (KATs). RESULTS 135 patients with PeAF underwent catheter ablation with the stepwise ablation method adopted in 119 cases. Bidirectional conduction blocks were achieved in 117 patients (98.3%). The block rates of every step were 0%, 58.0%, 44.0%, and 92.9%, and the cumulative block rates for the four steps were 0%, 58.0%, 76.5%, and 98.3%, respectively. No patient experienced fatal complications. CONCLUSIONS Our novel stepwise catheter ablation method for MI yielded a high bidirectional block rate with high reproducibility.
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Affiliation(s)
- Jingchao Li
- Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, China
| | - Shihua Cui
- Dalian Medical University, Dalian, China
| | - Huihui Song
- Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, China
| | - Luqian Cui
- Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, China
| | - Haijia Yu
- Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, China
| | - Yingjie Chu
- Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, China.
| | - Shujuan Dong
- Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou, China.
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Ishimura M, Yamamoto M, Himi T, Kobayashi Y. Efficacy and durability of posterior wall isolation with ethanol infusion into the vein of Marshall. J Cardiovasc Electrophysiol 2023; 34:1630-1639. [PMID: 37337457 DOI: 10.1111/jce.15977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 06/02/2023] [Accepted: 06/11/2023] [Indexed: 06/21/2023]
Abstract
INTRODUCTION Ethanol infusion into the vein of Marshall (EIVOM) is expected to be an adjunctive therapy for mitral isthmus (MI) ablation. Additionally, EIVOM can widely ablate the epicardium via the branches that extend to the left atrial posterior wall (LAPW) and facilitate LAPW isolation. This study aimed to investigate the efficacy and durability of LAPW isolation with EIVOM. METHODS Our cohort consisted of 413 patients with atrial fibrillation (AF) who underwent both LAPW and MI ablations. EIVOM was first attempted in 177 (35%) patients with adequate VOMs. The VOM was infused with 5 mL of ethanol with a double coaxial guiding catheter technique. Both ablations were performed only by radiofrequency ablation (the RF group) in the remaining 236 (57%) patients. RESULTS EIVOM with 5 mL of ethanol was completely achieved in 106 patients (the EIVOM group). The application duration of LAPW isolation did not differ significantly between the two groups (718 ± 276 vs. 709 ± 288 s; p = .78). LAPW debulking ablation was required in 64/106 (60%) and 176/236 (75%) patients in the EIVOM and RF groups, respectively (p < .05). However, AF- or atrial tachycardia-free survival analyses revealed no significant differences between the two groups (log-rank p = .70). Among the cases of recurrence, 17 and 38 patients underwent subsequent ablation sessions; LAPW was reconnected in 9/17 (53%) and 25/38 (53%) patients (p = .36) in the EIVOM and RF groups, respectively. CONCLUSION EIVOM reduced the number of cases that required LAPW debulking ablation but did not improve the durability of LAPW isolation or clinical outcomes.
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Affiliation(s)
| | - Masashi Yamamoto
- Department of Cardiology, Kimitsu Central Hospital, Kisarazu, Japan
| | - Toshiharu Himi
- Department of Cardiology, Kimitsu Central Hospital, Kisarazu, Japan
| | - Yoshio Kobayashi
- Department of Cardiology, Chiba University Hospital, Chiba, Japan
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Li X, Li M, Zhang Y, Zhang H, Wu W, Ran B, Li X, Tang Q, Fu B. Simplified stepwise anatomical ablation strategy for mitral isthmus: efficacy, efficiency, safety, and outcome. Europace 2022; 25:610-618. [PMID: 36353823 PMCID: PMC9934997 DOI: 10.1093/europace/euac204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 10/23/2022] [Indexed: 11/11/2022] Open
Abstract
AIMS Bidirectional and durable block of mitral isthmus (MI) is essential for catheter ablation of persistent atrial fibrillation (PeAF) and perimitral flutter (PMF), but it remains a challenge. The aim of this study was to create a simple anatomical ablation strategy with minimal fluoroscopy that would yield a high success rate for MI block. METHODS AND RESULTS Patients with PeAF or PMF were included. Mitral isthmus was ablated in a stepwise strategy. In Step 1, endocardial MI linear ablation was performed; in Step 2, ablation was targeted to the posterolateral portion of the left atrium along the MI line; in Step 3, epicardial ablation within the coronary sinus (CS) was performed across the MI line to the ostium of the vein of Marshall (VOM) or performed within the VOM if available; in Step 4, the catheter was rotated and ablated in the CS to isolate the CS; and in Step 5, the early activation site with complex component potential above the MI line during distal CS pacing was considered as the ablation target. All patients were followed up. A total of 178 (17 patients with mechanical prosthetic mitral valve) were included. One hundred and sixty-six patients achieved a confirmed MI bidirectional conduction block (93%). One patient had cardiac tamponade. Four patients showed re-conduction across the MI line during a repeated ablation. In the latest follow-up [12 (7, 16) months], 161 of 178 (90%) patients maintained their sinus rhythm. CONCLUSION A simple stepwise anatomical ablation strategy for MI shows a high success rate with low fluoroscopy exposure.
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Affiliation(s)
- Xiaoqin Li
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, 118 Xingguang Road, Yubei District, 401120 Chongqing, China
| | - Mengmeng Li
- Department of Cardiology, Peking University Third Hospital, Beijing, China
| | - Yuan Zhang
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, 118 Xingguang Road, Yubei District, 401120 Chongqing, China
| | - Hao Zhang
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, 118 Xingguang Road, Yubei District, 401120 Chongqing, China
| | - Wenli Wu
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, 118 Xingguang Road, Yubei District, 401120 Chongqing, China
| | - Boli Ran
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, 118 Xingguang Road, Yubei District, 401120 Chongqing, China
| | - Xiaoli Li
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, 118 Xingguang Road, Yubei District, 401120 Chongqing, China
| | - Qianmei Tang
- Department of Cardiology, Chongqing General Hospital, University of Chinese Academy of Sciences, 118 Xingguang Road, Yubei District, 401120 Chongqing, China
| | - Biao Fu
- Corresponding author. Tel: +86 2363390551. E-mail address:
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He B, Zhao F, Yu W, Li Y, Wu X, Lu Z. Ethanol Infusion of Vein of Marshall for the Treatment of Persistent Atrial Fibrillation: The Basics and Clinical Practice. J Cardiovasc Dev Dis 2022; 9:jcdd9080270. [PMID: 36005434 PMCID: PMC9409861 DOI: 10.3390/jcdd9080270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 11/21/2022] Open
Abstract
Catheter ablation for persistent atrial fibrillation (PeAF) is particularly challenging, as the clinical outcomes are modest. Pulmonary vein isolation (PVI) plus linear ablation is one of the main strategies for PeAF ablation. Completely durable transmural lesions are difficult to achieve by catheter ablation during mitral isthmus ablation. The ligament of Marshall contains the vein of Marshall (VOM), myocardial tracts and innervation, and serves as arrhythmogenic foci that make it an attractive target in catheter ablation of atrial fibrillation. Additionally, it co-localizes with the mitral isthmus, and may serve as a part of the perimitral isthmus reentrant circuit. Ethanol infusion into the VOM results in rapid ablation of the neighboring myocardium and its innervation. Its incorporation into PVI significantly increases the success rate of mitral isthmus block and the clinical outcome of PeAF ablation.
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Affiliation(s)
- Bo He
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430071, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan 430071, China
| | - Fang Zhao
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430071, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan 430071, China
| | - Wenxi Yu
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430071, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan 430071, China
| | - Yi Li
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430071, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan 430071, China
| | - Xiaoyan Wu
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430071, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan 430071, China
| | - Zhibing Lu
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430071, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan 430071, China
- Correspondence: ; Tel.: +86-27-67813073
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Nakashima T, Pambrun T, Vlachos K, Goujeau C, André C, Krisai P, Daniel Ramirez F, Pintican G, Kamakura T, Takagi T, Nakatani Y, Surget E, Cheniti G, Tixier R, Chauvel R, Duchateau J, Sacher F, Cochet H, Hocini M, Haïssaguerre M, Jaïs P, Derval N. Strategy for Repeat Procedures in Patients with Persistent Atrial Fibrillation: Systematic Linear Ablation with Adjunctive Ethanol Infusion into the Vein of Marshall versus Electrophysiology‐Guided Ablation. J Cardiovasc Electrophysiol 2022; 33:1116-1124. [DOI: 10.1111/jce.15472] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 02/22/2022] [Accepted: 02/28/2022] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | - F. Daniel Ramirez
- CHU Bordeaux, IHU Lyric, Univ. BordeauxFrance
- Division of Cardiology, University of Ottawa Heart InstituteOttawaOntarioCanada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Pierre Jaïs
- CHU Bordeaux, IHU Lyric, Univ. BordeauxFrance
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