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Khurshid S, Nguyen T, Yamada K, Hanley A. Looking into the Mirror: Pulmonary Vein Isolation in a Patient with Dextrocardia, Complete Situs Inversus and Interrupted Inferior Vena Cava. HeartRhythm Case Rep 2023. [DOI: 10.1016/j.hrcr.2023.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
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Mujović NM, Marinković MM, Marković N, Kocijančić A, Kovačević V, Vučićević V, Mujović NM, Potpara TS. Risk factors for late reconnections after circumferential pulmonary vein isolation guided by lesion size index - Data from repeat invasive electrophysiology procedure. Front Cardiovasc Med 2023; 9:986207. [PMID: 36776941 PMCID: PMC9908948 DOI: 10.3389/fcvm.2022.986207] [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: 07/04/2022] [Accepted: 12/29/2022] [Indexed: 01/27/2023] Open
Abstract
Background Late reconnections (LR) of pulmonary veins (PVs) after wide antral circumferential ablation (WACA) using point-to-point radiofrequency (RF) ablation are common. Lesion size index (LSI) is a novel marker of lesion quality proposed by Ensite Precision mapping system, expected to improve PV isolation durability. This study aimed to assess the durability of LSI-guided PVI and the risk factors for LR of PVs. Methods The prospective study included 33 patients with paroxysmal atrial fibrillation (PAF) who underwent (1) the index LSI-guided WACA procedure (with target LSI of 5.5-6.0 for anterior and 5.0-5.5 for posterior WACA segments) and (2) the 3-month protocol-mandated re-mapping procedure in all patients, irrespective of AF recurrence after the index procedure. Ablation parameters reported by Ensite mapping system were collected retrospectively. The inter-lesion distance (ILD) between all adjacent WACA lesions was calculated off-line. Association between index ablation parameters and the LRs of PVs at 3 months was analyzed. Results The median patient age was 61 (IQR: 53-64) years and 55% of them were males. At index procedure, the first-pass WACA isolation rate was higher for the left PVs than the right PVs (64 vs. 33%, p = 0.014). In addition, a low acute reconnection rates were observed, as follows: in 12.1% of patients, in 6.1% of WACA circles, in 3.8% of WACA segments and in 4.5% of PVs. However, the 3-month remapping study revealed LR of PV in 63.6% of patients, 37.9% of WACA circles, 20.5% of WACA segments and 26.5% of PVs. The LRs were identified mostly along the left anterior WACA segment. Independent risk factors for the LR of WACA were left-sided WACA location (OR 3.216 [95%CI: 1.065-9.716], p = 0.038) and longer ILD (OR 1.256 [95%CI: 1.035-1.523] for each 1-mm increase, p = 0.021). The ILD of > 8.0 mm showed a predictive value for the LR of WACA, with the sensitivity of 84% and specificity of 46%. A single case of cardiac tamponade occurred following the re-mapping invasive procedure. No other complications were encountered. Conclusion Although the LSI-guided PVI ensures a consistent PVI during the index procedure, LRs of PVs are still common. Besides the LSI, the PVI durability requires an optimal ILD between adjacent lesions, especially along the anterior lateral ridge.
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Affiliation(s)
- Nebojša M. Mujović
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia,Faculty of Medicine, University of Belgrade, Belgrade, Serbia,*Correspondence: Nebojša M. Mujović,
| | - Milan M. Marinković
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Nebojša Marković
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia,Mount Sinai Heart, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Aleksandar Kocijančić
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vladan Kovačević
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
| | - Vera Vučićević
- Center for Anesthesiology, University Clinical Center of Serbia, Belgrade, Serbia
| | - Nataša M. Mujović
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia,Center for Physical Medicine and Rehabilitation, University Clinical Center of Serbia, Belgrade, Serbia
| | - Tatjana S. Potpara
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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Hangiel U, Kuśnierz J, Bardyszewski A, Dzwonkowska D, Polańska-Skrzypczyk M, Derejko P. Atrial electrogram amplitude variability during atrial fibrillation ablation. J Cardiovasc Electrophysiol 2023; 34:35-43. [PMID: 36217991 DOI: 10.1111/jce.15702] [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] [Received: 05/31/2022] [Revised: 10/01/2022] [Accepted: 10/06/2022] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Variability of the bipolar atrial electrogram amplitude may affect voltage maps created during ablation procedures, and thus also the extent of ablations. Therefore, the aim of the study was to assess the beat-to-beat electrogram amplitude variability in the left atrium in patients undergoing atrial fibrillation ablation. METHODS In 11 patients undergoing ablation for atrial fibrillation, 362 mapping points were collected in two series. At each point, three consecutive beats were recorded and verified including the bipolar electrogram amplitude, contact force (CF), and orientation of the catheter tip. The repeatability and reproducibility of obtained measurements between consecutive beats and series were assessed by the Pearson correlation coefficient (r), the Bland-Altman test, repeatability coefficient (RC), relative standard deviation (RSD), and concordance correlation coefficient (CCC). RESULTS A total of 1086 beats were analyzed. The correlation coefficient for bipolar atrial electrogram amplitude for the first two beats, and for the first and the third beats were 0.94 and 0.86, respectively. The average of differences between the first two beats and between the first and the third beats were 0.06 and 0.13 mV with 95% limits of agreement (LoA) within ±0.98 and ±1.74 mV, respectively. For CF values ≤5 and ≥20 g, the 95% LoA were narrower compared to other CF ranges and were ±0.49 and ±0.71 mV from the average value, respectively. When the analyzes were performed within the predefined ranges of bipolar electrogram amplitude: 0.05-1; 1-2; 2-3 mV, the 95% LoA were within ±0.33, ±0.98, and ±0.84 mV from the average value, respectively. RC and RSD were 1.41 mV and 20.8%, respectively. For repeated measurement between series, CCC ranged from 0.67 to 0.71 and the 95% LoA were within ±2.7 to 2.9 mV from the average value. CONCLUSION Bipolar atrial electrogram amplitude recorded at a given site during ablation procedures is variable to an extent that may be clinically relevant. The magnitude of the observed variability is greater during remapping.
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Affiliation(s)
| | - Jacek Kuśnierz
- Department of Cardiology, Medicover Hospital, Warsaw, Poland
| | | | | | | | - Paweł Derejko
- Department of Cardiology, Medicover Hospital, Warsaw, Poland.,Cardiac Arrhythmias Department, National Institute of Cardiology, Warsaw, Poland
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Świętoniowska-Mścisz A, Stec P, Stec S, Szydłowski L, Zagrodzka M, Kusa J, Morka A, Kameczura T, Mścisz A, Anna Stec-Gola, Karbarz D, Śledź J. Efficacy and safety of zero-fluoroscopy approach for ablation of atrioventricular nodal reentry tachycardia: experience from more than 1000 cases. J Interv Card Electrophysiol 2022:10.1007/s10840-022-01419-2. [DOI: 10.1007/s10840-022-01419-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 11/04/2022] [Indexed: 12/14/2022]
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Guckel D, Sohns C, Sommer P. [Rhythm and metabolic control]. Herz 2022; 47:410-418. [PMID: 35849125 DOI: 10.1007/s00059-022-05128-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/28/2022] [Indexed: 11/25/2022]
Abstract
Diabetes mellitus and atrial fibrillation show a steady increase in their prevalence. Diabetes mellitus is a relevant risk factor for the development and maintenance of atrial fibrillation, which should not be underestimated. Fluctuations in blood glucose levels occurring in diabetes, inflammatory processes and oxidative stress lead to structural, electromechanical, electrical and autonomic remodelling processes in the myocardium that promote atrial fibrillation. When atrial fibrillation and diabetes mellitus coincide, this is often associated with more pronounced symptoms, lower quality of life, more frequent hospitalization and a higher mortality rate. Can early and consistent euglycemic blood glucose monitoring effectively influence atrial remodelling processes, cardiovascular end points and the occurrence of atrial fibrillation? Are there new and combined drug treatment approaches for diabetes mellitus and atrial fibrillation? What ablation strategy should be adopted for the interventional treatment of atrial fibrillation in patients with diabetes mellitus? This review article attempts to find answers to these questions.
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Affiliation(s)
- Denise Guckel
- Klinik für Elektrophysiologie/Rhythmologie, Herz- und Diabeteszentrum NRW, Universitätsklinik der Ruhr-Universität Bochum, Georgstr. 11, 32545, Bad Oeynhausen, Deutschland.
| | - Christian Sohns
- Klinik für Elektrophysiologie/Rhythmologie, Herz- und Diabeteszentrum NRW, Universitätsklinik der Ruhr-Universität Bochum, Georgstr. 11, 32545, Bad Oeynhausen, Deutschland
| | - Philipp Sommer
- Klinik für Elektrophysiologie/Rhythmologie, Herz- und Diabeteszentrum NRW, Universitätsklinik der Ruhr-Universität Bochum, Georgstr. 11, 32545, Bad Oeynhausen, Deutschland
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Kotb A, Chin SH, Ng GA. Recent advances in the tools available for atrial fibrillation ablation. Expert Rev Med Devices 2022; 19:141-154. [PMID: 35188431 DOI: 10.1080/17434440.2022.2038564] [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: 11/26/2021] [Accepted: 02/02/2022] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Atrial fibrillation (AF) is the commonest arrhythmia in clinical practice with significant detrimental health impacts. Much effort has been spent in mapping AF, determine its triggers and drivers, and how to develop tools to eliminate these triggers. AREAS COVERED In this state of-the-art review article, we aim to highlight the recent techniques in catheter-based management of Atrial Fibrillation; including new advancements either in the catheter design or the software used. This includes a comprehensive summary of the most recent tools used in AF mapping and subsequent ablation. EXPERT OPINION Electrical isolation of the pulmonary veins has been developed and established as the cornerstone in AF ablation with good results in patients with paroxysmal AF (PAF) whilst new ablation tools are aimed at streamlining the procedure. However, the quest for persistent AF (PeAF) remains. The future of AF ablation, we believe, lies in identifying AF drivers by means of the new developing mapping tools and altering their electrical properties in a safe, reproducible, and effective manner.
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Affiliation(s)
- Ahmed Kotb
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
- Department of Cardiology, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Shui Hao Chin
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
- Department of Cardiology, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - G Andre Ng
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
- Department of Cardiology, University Hospitals of Leicester NHS Trust, Leicester, UK
- National Institute for Health Research Leicester Biomedical Research Centre, Leicester, UK
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Kwon OS, Lee J, Lim S, Park JW, Han HJ, Yang SH, Hwang I, Yu HT, Kim TH, Uhm JS, Joung B, Lee MH, Pak HN. Accuracy and clinical feasibility of 3D-myocardial thickness map measured by cardiac computed tomogram. INTERNATIONAL JOURNAL OF ARRHYTHMIA 2020. [DOI: 10.1186/s42444-020-00020-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Although myocardial thickness is an important variable for therapeutic catheter ablation of cardiac arrhythmias, quantification of wall thickness has been overlooked. We developed a software (AMBER) that measures 3D-myocardial thickness using a cardiac computed tomogram (CT) image, verified its accuracy, and tested its clinical feasibility.
Methods
We generated 3D-thickness maps by calculating wall thickness (WT) from the CT images of 120 patients’ hearts and a 3D-phantom model (PhM). The initial vector field of the Laplace equation was oriented to calculate WT with the field lines derived from the 3D mesh. We demonstrate the robustness of the Laplace WT algorithm by comparing with the real thickness of 3D-PhM, echocardiographically measured left ventricular (LV) WT, and regional left atrial (LA) WT reported from previous studies. We conducted a pilot case of catheter ablation for atrial fibrillation (AF) utilizing real-time LAWT map-guided radiofrequency (RF) energy titration.
Results
AMBER 3D-WT had excellent correlations with the real thickness of the PhM (R = 0.968, p < 0.001) and echocardiographically measured LVWT in 10 patients (R = 0.656, p = 0.007). AMBER 3D-LAWT (n = 120) showed a relatively good match with 12 previously reported regional LAWT. We successfully conducted pilot AF ablation utilizing AMBER 3D-LAWT map-guided real-time RF energy titration.
Conclusion
We developed and verified an AMBER 3D-cardiac thickness map measured by cardiac CT images for LAWT and LVWT, and tested its feasibility for RF energy titration during clinical catheter ablation.
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Caulier-Cisterna R, Blanco-Velasco M, Goya-Esteban R, Muñoz-Romero S, Sanromán-Junquera M, García-Alberola A, Rojo-Álvarez JL. Spatial-Temporal Signals and Clinical Indices in Electrocardiographic Imaging (II): Electrogram Clustering and T-wave Alternans. SENSORS (BASEL, SWITZERLAND) 2020; 20:s20113070. [PMID: 32485879 PMCID: PMC7309062 DOI: 10.3390/s20113070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/17/2020] [Accepted: 04/27/2020] [Indexed: 06/11/2023]
Abstract
During the last years, attention and controversy have been present for the first commercially available equipment being used in Electrocardiographic Imaging (ECGI), a new cardiac diagnostic tool which opens up a new field of diagnostic possibilities. Previous knowledge and criteria of cardiologists using intracardiac Electrograms (EGM) should be revisited from the newly available spatial-temporal potentials, and digital signal processing should be readapted to this new data structure. Aiming to contribute to the usefulness of ECGI recordings in the current knowledge and methods of cardiac electrophysiology, we previously presented two results: First, spatial consistency can be observed even for very basic cardiac signal processing stages (such as baseline wander and low-pass filtering); second, useful bipolar EGMs can be obtained by a digital processing operator searching for the maximum amplitude and including a time delay. In addition, this work aims to demonstrate the functionality of ECGI for cardiac electrophysiology from a twofold view, namely, through the analysis of the EGM waveforms, and by studying the ventricular repolarization properties. The former is scrutinized in terms of the clustering properties of the unipolar an bipolar EGM waveforms, in control and myocardial infarction subjects, and the latter is analyzed using the properties of T-wave alternans (TWA) in control and in Long-QT syndrome (LQTS) example subjects. Clustered regions of the EGMs were spatially consistent and congruent with the presence of infarcted tissue in unipolar EGMs, and bipolar EGMs with adequate signal processing operators hold this consistency and yielded a larger, yet moderate, number of spatial-temporal regions. TWA was not present in control compared with an LQTS subject in terms of the estimated alternans amplitude from the unipolar EGMs, however, higher spatial-temporal variation was present in LQTS torso and epicardium measurements, which was consistent through three different methods of alternans estimation. We conclude that spatial-temporal analysis of EGMs in ECGI will pave the way towards enhanced usefulness in the clinical practice, so that atomic signal processing approach should be conveniently revisited to be able to deal with the great amount of information that ECGI conveys for the clinician.
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Affiliation(s)
- Raúl Caulier-Cisterna
- Department of Signal Theory and Communications, Telematics and Computing Systems, Rey Juan Carlos University, 28943 Fuenlabrada, Madrid, Spain; (R.C.-C.); (R.G.-E.); (S.M.-R.); (M.S.-J.)
| | - Manuel Blanco-Velasco
- Department of Signal Theory and Communications, Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain;
| | - Rebeca Goya-Esteban
- Department of Signal Theory and Communications, Telematics and Computing Systems, Rey Juan Carlos University, 28943 Fuenlabrada, Madrid, Spain; (R.C.-C.); (R.G.-E.); (S.M.-R.); (M.S.-J.)
| | - Sergio Muñoz-Romero
- Department of Signal Theory and Communications, Telematics and Computing Systems, Rey Juan Carlos University, 28943 Fuenlabrada, Madrid, Spain; (R.C.-C.); (R.G.-E.); (S.M.-R.); (M.S.-J.)
- Center for Computational Simulation, Universidad Politécnica de Madrid, 28223 Boadilla, Madrid, Spain
| | - Margarita Sanromán-Junquera
- Department of Signal Theory and Communications, Telematics and Computing Systems, Rey Juan Carlos University, 28943 Fuenlabrada, Madrid, Spain; (R.C.-C.); (R.G.-E.); (S.M.-R.); (M.S.-J.)
| | - Arcadi García-Alberola
- Arrhythmia Unit, Hospital Clínico Universitario Virgen de la Arrixaca de Murcia, El Palmar, 30120 Murcia, Spain;
| | - José Luis Rojo-Álvarez
- Department of Signal Theory and Communications, Telematics and Computing Systems, Rey Juan Carlos University, 28943 Fuenlabrada, Madrid, Spain; (R.C.-C.); (R.G.-E.); (S.M.-R.); (M.S.-J.)
- Center for Computational Simulation, Universidad Politécnica de Madrid, 28223 Boadilla, Madrid, Spain
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Rottner L, Waddell D, Lin T, Metzner A, Rillig A. Innovative tools for atrial fibrillation ablation. Expert Rev Med Devices 2020; 17:555-563. [DOI: 10.1080/17434440.2020.1768846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Laura Rottner
- Department of Cardiology, Universitäres Herzzentrum Hamburg-Eppendorf , Hamburg, Germany
| | - Daniela Waddell
- Department of Cardiology, Asklepios Klinik Sankt Georg , Hamburg, Germany
| | - Tina Lin
- Department of Cardiology, GenesisCare , Melbourne, Australia
| | - Andreas Metzner
- Department of Cardiology, Universitäres Herzzentrum Hamburg-Eppendorf , Hamburg, Germany
| | - Andreas Rillig
- Department of Cardiology, Universitäres Herzzentrum Hamburg-Eppendorf , Hamburg, Germany
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Borlich M, Sommer P. Cardiac Mapping Systems: Rhythmia, Topera, EnSite Precision, and CARTO. Card Electrophysiol Clin 2020; 11:449-458. [PMID: 31400869 DOI: 10.1016/j.ccep.2019.05.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Novel cardiac mapping systems allow a safe and highly accurate 3-D reconstruction of cardiac structures as well as fast and accurate visualization of cardiac arrhythmias. In addition, they are increasingly reducing the need for fluoroscopy in these procedures. The current state of the art, as well as the presentation of possible uses of individual systems and their limitations, is presented in this article. Cardiac mapping systems can significantly contribute to an optimal therapeutic decision making in invasive electrophysiology. This article introduces new developments of Rhythmia, Topera, EnSite Precision, and CARTO systems and provides a look ahead to the future.
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Affiliation(s)
- Martin Borlich
- Heart Center, Segeberger Kliniken (Academic Teaching Hospital of the Universities of Kiel, Lübeck and Hamburg), Am Kurpark 1, Bad Segeberg, Schleswig-Holstein 23795, Germany.
| | - Philipp Sommer
- Clinic of Electrophysiology, Heart and Diabetes Center NRW, University Hospital of Ruhr-University Bochum, Georgstr. 11, Bad Oeynhausen, Nordrhein-Westfalen 32545, Germany
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Corazza I, Diemberger I, Martignani C, Ziacchi M, Rossi PL, Lombi A, Zannoli R, Biffi M. Wireless Endocardial Atrial (and Ventricular) Sensing with no Implanted Power Source: a Proposal. J Med Syst 2019; 43:159. [DOI: 10.1007/s10916-019-1277-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 04/05/2019] [Indexed: 12/15/2022]
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