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Debreceni D, Janosi KF, Turcsan M, Toth D, Bocz B, Simor T, Kupo P. Feasibility and safety of cavotricuspid isthmus ablation using exclusive intracardiac echocardiography guidance: a proof-of-concept, observational trial. Front Cardiovasc Med 2023; 10:1244137. [PMID: 37900565 PMCID: PMC10601457 DOI: 10.3389/fcvm.2023.1244137] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 10/02/2023] [Indexed: 10/31/2023] Open
Abstract
Introduction Catheter ablation is the preferred treatment for typical atrial flutter (AFl), but it can be challenging due to anatomical abnormalities. The use of 3D electroanatomical mapping systems (EAMS) has reduced fluoroscopy exposure during AFl ablation. Intracardiac echocardiography (ICE) has also shown benefits in reducing radiation exposure during AFl ablation. However, there is a lack of evidence on the feasibility of ICE-guided, zero-fluoroscopy AFl ablation without the use of EAMS. Methods In this prospective study, we enrolled 80 patients with CTI-dependent AFl. The first 40 patients underwent standard fluoroscopy + ICE-guided ablation (Standard ICE group), while the other 40 patients underwent zero-fluoroscopy ablation using only ICE (Zero ICE group). Procedure outcomes, including acute success, procedure time, fluoroscopy time, radiation dose, and complications, were compared between the groups. Results The acute success rate was 100% in both groups. Out of the 40 cases, the zero-fluoroscopy strategy was successfully implemented in 39 cases (97.5%) in the Zero ICE group. There were no significant differences in procedure time [55.5 (46.5; 66.8) min vs. 51.5 (44.0; 65.5), p = 0.50] and puncture to first ablation time [18 (13.5; 23) min vs. 19 (15; 23.5) min, p = 0.50] between the groups. The Zero ICE group had significantly lower fluoroscopy time [57 (36.3; 90) sec vs. 0 (0; 0) sec, p < 0.001] and dose [3.17 (2.27; 5.63) mGy vs. 0 (0; 0) mGy, p < 0.001] compared to the Standard ICE group. Total ablation time was longer in the Standard ICE group [597 (447; 908) sec vs. 430 (260; 750), p = 0.02], but total ablation energy [22,458 (14,836; 31,116) Ws vs. 17,043 (10,533; 29,302) Ws, p = 0.10] did not differ significantly. First-pass bidirectional conduction block of the CTI and acute reconnection rates were similar between the groups. No complications or recurrences were observed during the follow-up period. Conclusion Our study suggests that zero-fluoroscopy CTI ablation guided solely by ICE for AFl is feasible and safe. Further investigation is warranted for broader validation.
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Affiliation(s)
| | | | | | | | | | | | - Peter Kupo
- Heart Institute, Medical School, University of Pecs, Pecs, Hungary
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Faletra FF, Agricola E, Flachskampf FA, Hahn R, Pepi M, Ajmone Marsan N, Wunderlich N, Elif Sade L, Donal E, Zamorano JL, Cosyns B, Vannan M, Edvardsen T, Berrebi A, Popescu BA, Lancellotti P, Lang R, Bäck M, Bertrand PB, Dweck M, Keenan N, Stankovic I. Three-dimensional transoesophageal echocardiography: how to use and when to use-a clinical consensus statement from the European Association of Cardiovascular Imaging of the European Society of Cardiology. Eur Heart J Cardiovasc Imaging 2023; 24:e119-e197. [PMID: 37259019 DOI: 10.1093/ehjci/jead090] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 04/11/2023] [Indexed: 06/02/2023] Open
Abstract
Three-dimensional transoesophageal echocardiography (3D TOE) has been rapidly developed in the last 15 years. Currently, 3D TOE is particularly useful as an additional imaging modality for the cardiac echocardiographers in the echo-lab, for cardiac interventionalists as a tool to guide complex catheter-based procedures cardiac, for surgeons to plan surgical strategies, and for cardiac anaesthesiologists and/or cardiologists, to assess intra-operative results. The authors of this document believe that acquiring 3D data set should become a 'standard part' of the TOE examination. This document provides (i) a basic understanding of the physic of 3D TOE technology which enables the echocardiographer to obtain new skills necessary to acquire, manipulate, and interpret 3D data sets, (ii) a description of valvular pathologies, and (iii) a description of non-valvular pathologies in which 3D TOE has shown to be a diagnostic tool particularly valuable. This document has a new format: instead of figures randomly positioned through the text, it has been organized in tables which include figures. We believe that this arrangement makes easier the lecture by clinical cardiologists and practising echocardiographers.
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Affiliation(s)
- Francesco F Faletra
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Eustachio Agricola
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Frank A Flachskampf
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Rebecca Hahn
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Mauro Pepi
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Nina Ajmone Marsan
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Nina Wunderlich
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Leyla Elif Sade
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Erwan Donal
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Jose-Luis Zamorano
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Bernard Cosyns
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Mani Vannan
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Thor Edvardsen
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Alain Berrebi
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Bogdan A Popescu
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Patrizio Lancellotti
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Roberto Lang
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Magnus Bäck
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Philippe B Bertrand
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Marc Dweck
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Niall Keenan
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
| | - Ivan Stankovic
- Division of Cardiology, ISMETT: Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo, Lugano 6900, Switzerland
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Guan F, Saguner AM, Breitenstein A, Wang M, Molitor N, Brunckhorst C, Wolber T, Duru F. The effect of first step right atrial mapping (FRAM) on ablation duration and fluoroscopy exposure during cavotricuspid isthmus ablation of atrial flutter. Front Cardiovasc Med 2023; 10:1205966. [PMID: 37346289 PMCID: PMC10279846 DOI: 10.3389/fcvm.2023.1205966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 05/22/2023] [Indexed: 06/23/2023] Open
Abstract
Aim To investigate the clinical significance of right atrial mapping prior to cavotricuspid isthmus (CTI) ablation in patients with typical atrial flutter (AFL). Methods Clinical and ablation parameters were retrospectively assessed and compared in patients undergoing CTI ablation with or without a first-step right atrial mapping (FRAM) by using the CARTO 3D mapping system. Results CTI block by radiofrequency ablation (RFA) was achieved in all 143 patients. In the FRAM group there was a shorter ablation duration and fluoroscopy exposure compared with the non-FRAM group. CHA2DS2-VASc score was associated with higher ablation durations, more ablation applications and increased fluoroscopy exposure. Body mass index (BMI) was associated with longer ablation duration and more ablation applications. Furthermore, patients with reduced left ventricular ejection fraction (LVEF) had longer ablation durations and more fluoroscopy exposure. One patient in the non-FRAM group developed cardiac effusion after ablation. None of the patients had recurrence after 6 months of follow-up. Conclusions Patients with high BMI, high CHA2DS2-VASc score and reduced LVEF may benefit from the FRAM approach by reducing ablation duration, number of ablation applications and fluoroscopy exposure.
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Affiliation(s)
- Fu Guan
- Cardiac Arrhythmia and Electrophysiology Division, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
| | - Ardan M. Saguner
- Cardiac Arrhythmia and Electrophysiology Division, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
- Center for Translational and Experimental Cardiology (CTEC), University of Zurich, Schlieren, Switzerland
| | - Alexander Breitenstein
- Cardiac Arrhythmia and Electrophysiology Division, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
| | - Mia Wang
- Department of Biostatistics, University of Michigan, Ann Arbor, MI, United States
| | - Nadine Molitor
- Cardiac Arrhythmia and Electrophysiology Division, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
| | - Corinna Brunckhorst
- Cardiac Arrhythmia and Electrophysiology Division, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
| | - Thomas Wolber
- Cardiac Arrhythmia and Electrophysiology Division, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
- Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Firat Duru
- Cardiac Arrhythmia and Electrophysiology Division, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland
- Center for Translational and Experimental Cardiology (CTEC), University of Zurich, Schlieren, Switzerland
- Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
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Ulbrich S, Huo Y, Tomala J, Wagner M, Richter U, Pu L, Mayer J, Zedda A, Krafft AJ, Lindborg K, Piorkowski C, Gaspar T. Magnetic resonance imaging–guided conventional catheter ablation of isthmus-dependent atrial flutter using active catheter imaging. Heart Rhythm O2 2022; 3:553-559. [DOI: 10.1016/j.hroo.2022.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Ablation index-guided cavotricuspid isthmus ablation with contiguous lesions using fluoroscopy integrated 3D mapping in atrial flutter. J Interv Card Electrophysiol 2022; 64:217-222. [PMID: 35294705 PMCID: PMC9236984 DOI: 10.1007/s10840-022-01182-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/10/2022] [Indexed: 10/25/2022]
Abstract
PURPOSE The feasibility and safety of cavotricuspid isthmus (CTI) ablation with contiguous lesions using ablation index (AI) under the guidance of fluoroscopy integrated 3D mapping (CARTO UNIVU/CU) in typical atrial flutter (AFL) remains uncertain. This study aimed to determine the efficacy of AI-guided CTI ablation with contiguous lesions in patients with AFL. METHODS In this single-center, prospective, non-randomized, single-arm, observational study, procedural outcomes were determined in 151 patients undergoing AI-guided CTI ablation (AI group) with a target AI value of 450 and an interlesion distance of ≤ 4 mm under CU guidance. These outcomes were compared with those of 30 patients undergoing non-AI-guided ablation (non-AI group). RESULTS Among 151 patients, first-pass conduction block was achieved in 120 (80%) patients in the AI group (67% in the non-AI group, P = 0.152) with a shorter fluoroscopy time of 0.2 ± 0.4 min (1.7 ± 2.0 min in the non-AI group, P < 0.001). Conduction gaps were located at the atrial aspects near the inferior vena cava in 24 of 31 (78%) patients without first-pass conduction block. The AI group received 11 ± 5 (12 ± 4 in the non-AI group, P = 0.098) radiofrequency (RF) applications, and the RF time was 4.2 ± 2.4 (5.1 ± 2.5 min in the non-AI group, P = 0.011). Despite the occurrence of steam pop in 3 (2%) patients, none of them developed cardiac tamponade. No patients had recurrence within 6 months of follow-up. CONCLUSIONS AI-guided CTI ablation in combination with CU was feasible and effective in reducing radiation exposure in patients with AFL.
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Arnold R, Hofer E, Haas J, Sanchez-Quintana D, Plank G. Diversity and complexity of the cavotricuspid isthmus in rabbits: A novel scheme for classification and geometrical transformation of anatomical structures. PLoS One 2022; 17:e0264625. [PMID: 35231058 PMCID: PMC8887761 DOI: 10.1371/journal.pone.0264625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 02/14/2022] [Indexed: 11/18/2022] Open
Abstract
The aim of this study was to describe the morphology of the cavotricuspid isthmus (CTI) in detail and introduce a comprehensive scheme to describe the topology of this region based on functional considerations. This may lead to a better understanding of isthmus-dependent flutter and fibrillation and to improved intervention strategies. We used images of the cavotricuspid isthmus from 52 rabbits of both sexes with a median weight of 3.40 ± 0.93 kg. The area of the CTI was 124.25 ± 42.14 mm2 with 53.28 ± 21.13 mm2 covered by pectinate muscles connecting the terminal crest and the vestibule. Isthmus length decreased from inferolateral (13.09 ±2.14 mm) to central (9.85 ± 2.14 mm) to paraseptal (4.88 ± 1.96 mm) resembling the overall human geometry. Ramification sites of pectinate muscles were identified and six levels dividing the CTI from posterior to anterior were introduced. This allowed the classification of pectinate muscle segments based on the connected ramification level. To account for the high inter-individual variations in size and shape, the CTI was projected onto a normalized reference frame using bilinear transformation. Furthermore, two measures of complexity were introduced: (i) the ramification index, which reflects the total number of muscle segments connected to a ramification site and (ii) the complexity index, which reflects the type of ramification (branching or merging site). Topological analysis showed that the complexity of the pectinate muscle network decreases from inferolateral to paraseptal and that the number of electrically uncoupled parallel pathways increases in the central section between the terminal crest and the vestibule which introduces potential reentry pathways.
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Affiliation(s)
- Robert Arnold
- Division of Biophysics, Gottfried-Schatz-Research-Center, Medical University of Graz, Graz, Austria
- * E-mail:
| | - Ernst Hofer
- Division of Biophysics, Gottfried-Schatz-Research-Center, Medical University of Graz, Graz, Austria
| | - Josef Haas
- Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Graz, Austria
| | - Damian Sanchez-Quintana
- Department of Anatomy and Cell Biology, Faculty of Medicine, University of Extremadura, Badajoz, Spain
| | - Gernot Plank
- Division of Biophysics, Gottfried-Schatz-Research-Center, Medical University of Graz, Graz, Austria
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Restrepo AJ, Dickfeld TM. Image Integration Using Intracardiac Echography and Three-dimensional Reconstruction for Mapping and Ablation of Atrial and Ventricular Arrhythmias. Card Electrophysiol Clin 2021; 13:365-380. [PMID: 33990275 DOI: 10.1016/j.ccep.2021.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This article reviews the basis for image integration of intracardiac echocardiography (ICE) with three-dimensional electroanatomic mapping systems and preprocedural cardiac imaging modalities to enhance anatomic understanding and improve guidance for atrial and ventricular ablation procedures. It discusses the technical aspects of ICE-based integration and the clinical evidence for its use. In addition, it presents the current technical limitations and future directions for this technology. This article also includes figures and videos of clinical representative arrhythmia cases where the use of ICE is key to a safe and successful outcome.
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Affiliation(s)
- Alejandro Jimenez Restrepo
- Section of Cardiology, Marshfield Clinic Health System, 1000 North Oak Avenue, Marshfield, WI 54449, USA.
| | - Timm Michael Dickfeld
- Section of Cardiac Electrophysiology, Maryland Arrhythmia and Cardiac Imaging Group (MACIG), University of Maryland School of Medicine, 22 South Greene Street, Room N3W77, Baltimore, MD 21201, USA
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Baccillieri MS, Rizzo S, De Gaspari M, Paradiso B, Thiene G, Verlato R, Basso C. Anatomy of the cavotricuspid isthmus for radiofrequency ablation in typical atrial flutter. Heart Rhythm 2019; 16:1611-1618. [DOI: 10.1016/j.hrthm.2019.05.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Indexed: 11/25/2022]
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Garweg C, De Buck S, Vandenberk B, Willems R, Ector J. High-Detailed evaluation of the right atrial anatomy by three-dimensional rotational angiography during ablation procedures for atrioventricular nodal reentrant tachycardia and atrial flutter. SCAND CARDIOVASC J 2018; 52:268-274. [PMID: 30445881 DOI: 10.1080/14017431.2018.1546893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
AIM 3D Rotational angiography (3DRA) allows for detailed reconstruction of atrial anatomy and is often used to facilitate pulmonary vein isolation. This study aimed to reappraise the anatomy of the right atrium (RA) using 3DRA, specifically looking at Koch's triangle and the cavotricuspid isthmus (CTI) in atrio-ventricular reentrant tachycardia (AVNRT) and atrial flutter (AFl) ablation. METHODS AND RESULTS 3DRA was performed in 97 patients: AVNRT = 51 and AFl = 46. Dimensions of Koch's triangle and CTI were highly variable between individuals but were not different in both ablation groups. RA volume was significantly larger in AFl patients (p = .004) while indexed RA volume to the body surface area (RAVI) was lightly different (p = .024). In univariate Cox analysis, age (p = .003), RAVI (p < .001) and previous ablation of AFl (p = .003) were predictors of AF occurrence . In multivariate Cox analysis, RAVI was the only independent predictor of AF occurrence. RAVI >80 ml/m2 was a strong predictor for AF during follow-up. CONCLUSION 3DRA allows for detailed per-procedural evaluation of RA anatomy and revealed a great variability in Koch's triangle and CTI dimensions and morphology. RA enlargement as measured by RAVI was an independent predictor for AF occurrence during follow-up.
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Affiliation(s)
- Christophe Garweg
- a Department of Cardiovascular Sciences , University of Leuven , Leuven , Belgium.,b Department of Cardiology , University Hospitals Leuven , Leuven , Belgium
| | - Stijn De Buck
- b Department of Cardiology , University Hospitals Leuven , Leuven , Belgium
| | - Bert Vandenberk
- a Department of Cardiovascular Sciences , University of Leuven , Leuven , Belgium.,b Department of Cardiology , University Hospitals Leuven , Leuven , Belgium
| | - Rik Willems
- a Department of Cardiovascular Sciences , University of Leuven , Leuven , Belgium.,b Department of Cardiology , University Hospitals Leuven , Leuven , Belgium
| | - Joris Ector
- a Department of Cardiovascular Sciences , University of Leuven , Leuven , Belgium.,b Department of Cardiology , University Hospitals Leuven , Leuven , Belgium
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