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1. Handgrip strength to screen early-onset sarcopenia in heart failure

Author

Marie Blanquet, Grégoire Massoulié, Yves Boirie, Candy Guiguet-Auclair, Aurélien Mulliez, Stefan Anker, Marie-Claire d’Agrosa Boiteux, Frédéric Jean, Nicolas Combaret, Géraud Souteyrand, Clément Riocreux, Bruno Pereira, Pascal Motreff, Patrick Rossignol, Guillaume Clerfond, and Romain Eschalier

Subjects
Heart Failure, Male, Inpatients, Sarcopenia, Nutrition and Dietetics, Hand Strength, Endocrinology, Diabetes and Metabolism, Humans, Female, Aged
Abstract

Sarcopenia in heart failure (HF) is associated with severe outcomes, increased mortality, and high healthcare cost burden. Systematic muscle screening in patients with chronic HF would improve quality and appropriateness of care. Here we tested handgrip strength (HGS) as a screening tool for sarcopenia in patients with chronic HF, using the EWGSOP 2010 and 2019 reference-standard definitions of sarcopenia.HF inpatients, aged 65 years old or above, were prospectively included between November 2014 and September 2018, and relevant sociodemographic, anthropometric and HF characterization data was collected. The accuracy of HGS as a screening test for sarcopenia was assessed by gender using area under the receiver operating characteristic (ROC) curves (AUC).The population consisted of 118 older patients (age: 78.9 yrs; BMI: 26.6 kg/mHGS can be used as a valid tool to screen for sarcopenia in older (≥65 yrs) patients with chronic HF.NCT03153774.

Published
2022
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2. Long-Term Follow-Up of Patients With Tetralogy of Fallot and Implantable Cardioverter Defibrillator

Author

Victor Waldmann, Abdeslam Bouzeman, Guillaume Duthoit, Linda Koutbi, Francis Bessiere, Fabien Labombarda, Christelle Marquié, Jean Baptiste Gourraud, Pierre Mondoly, Jean Marc Sellal, Pierre Bordachar, Alexis Hermida, Frédéric Anselme, Anouk Asselin, Caroline Audinet, Yvette Bernard, Serge Boveda, Paul Bru, Sok Sithikun Bun, Gael Clerici, Antoine Da Costa, Maxime de Guillebon, Pascal Defaye, Nathalie Elbaz, Romain Eschalier, Rodrigue Garcia, Charles Guenancia, Benoit Guy-Moyat, Franck Halimi, Didier Irles, Laurence Iserin, François Jourda, Magalie Ladouceur, Philippe Lagrange, Mikael Laredo, Jacques Mansourati, Grégoire Massoulié, Amel Mathiron, Philippe Maury, Anne Messali, Kumar Narayanan, Cédric Nguyen, Sandro Ninni, Marie-Cécile Perier, Bertrand Pierre, Penelope Pujadas, Frédéric Sacher, Pascal Sagnol, Ardalan Sharifzadehgan, Camille Walton, Pierre Winum, Cyril Zakine, Laurent Fauchier, Raphael Martins, Jean Luc Pasquié, Jean Benoit Thambo, Xavier Jouven, Nicolas Combes, Eloi Marijon, Fabien Squara, Guillaume Theodore, Didier Scarlatti, Jérome Hourdain, Jean-Claude Deharo, Pierre Ollitrault, Paul Milliez, Laure Champ-Rigot, Hugues Bader, Cécile Duplantier, Antoine Milhem, Audrey Sagnard, Géraldine Bertaux, Gabriel Laurent, Marc Badoz, Agustin Bortone, Guillaume Laborie, Anne Rollin, Quentin Voglimacci Stephanopoli, Franck Mandel, Alexandre Duparc, Guillaume Domain, Jean-Paul Albenque, Christèle Cardin, Stéphane Combes, Nikita Tanese, Karim Hasni, Christophe Leclercq, Vincent Galand, Dominique Pavin, Philippe Mabo, Nathalie Behar, Nicolas Clementy, Christophe Loose, Akli Otmani, Sandrine Venier, Adrien Carabelli, Peggy Jacon, Mouna Ben Kilani, Jean Bapstist Guichard, Cécile Romeyer-Bouchard, Laurianne Le Gloan, Vincent Probst, Luc Freysz, Hugues Blangy, Christian De Chillou, Nicolas Sadoul, Pierre Khattar, Charlotte Potelle, Frederic Jean, Paul Puie, Ziad Khoueiry, Philippe Chevallier, Arnaud Dulac, Sylvie Di Filippo, Kevin Gardey, Pierre Frey, Chrystelle Akret, Antoine Dompnier, Carole Maupain, Xavier Waintraub, Françoise Hidden-Lucet, Thomas Chastre, Estelle Gandjbakhch, Nicolas Badenco, Fabrice Extramiana, Antoine Leenhardt, Amir Zouaghi, Vincent Algalarrondo, Denis Amet, Emilie Varlet, Tej Chalbia, Séverine Philibert, Jacky Ollitrault, Thomas Lavergne, Pierre Baudinaud, Adrian Mirolo, Arnaud Savouré, Bénédicte Godin, Cathy Bertrand, Pierre Fiorello, Nicolas Johnson, Pierre-Marc Lallemand, Alexis Herminda, Jean-Sylvain Hermida, Bruno Degand, Rim El Bouazzaou, Stéphane Mourot, Samuel Goussot, Gaël Jauvert, Arnaud Lazarus, Caroline Grimard, Christine Alonso, Alexandre Zhao, Olivier Thomas, Bruno Cauchemez, Ghassan Moubarak, Nicolas Lellouche, David Hamon, Bogdan Enache, Gabriel Lactu, Françoise Wiart, Olivier Geoffroy, Damien Poindron, Alice Maltret, Cristine Raimondo, Damien Bonnet, Sébastien Hascoët, Nicolas Derval, Michel Haïssaguerre, Mélèze Hocini, and Clinical sciences

Subjects
Adult, Male, medicine.medical_specialty, Long term follow up, Cyanotic congenital heart disease, medicine.medical_treatment, 030204 cardiovascular system & hematology, Sudden death, Sudden cardiac death, 03 medical and health sciences, 0302 clinical medicine, Physiology (medical), Internal medicine, medicine, Humans, Defibrillators, Implantable/trends, Registries, 030212 general & internal medicine, Tetralogy of Fallot, business.industry, medicine.disease, Implantable cardioverter-defibrillator, Tetralogy of Fallot/epidemiology, Defibrillators, Implantable, 3. Good health, Cardiology, Female, Cardiology and Cardiovascular Medicine, business, Follow-Up Studies
Abstract

Background: Tetralogy of Fallot (TOF) is the most common cyanotic congenital heart disease, and sudden cardiac death represents an important mode of death in these patients. Data evaluating the implantable cardioverter defibrillator (ICD) in this patient population remain scarce. Methods: A Nationwide French Registry including all patients with tetralogy of Fallot with an ICD was initiated in 2010 by the French Institute of Health and Medical Research. The primary time to event end point was the time from ICD implantation to first appropriate ICD therapy. Secondary outcomes included ICD-related complications, heart transplantation, and death. Clinical events were centrally adjudicated by a blinded committee. Results: A total of 165 patients (mean age, 42.2±13.3 years, 70.1% males) were included from 40 centers, including 104 (63.0%) in secondary prevention. During a median (interquartile range) follow-up of 6.8 (2.5–11.4) years, 78 (47.3%) patients received at least 1 appropriate ICD therapy. The annual incidence of the primary outcome was 10.5% (7.1% and 12.5% in primary and secondary prevention, respectively; P =0.03). Overall, 71 (43.0%) patients presented with at least 1 ICD complication, including inappropriate shocks in 42 (25.5%) patients and lead dysfunction in 36 (21.8%) patients. Among 61 (37.0%) patients in primary prevention, the annual rate of appropriate ICD therapies was 4.1%, 5.3%, 9.5%, and 13.3% in patients with, respectively, 0, 1, 2, or ≥3 guidelines-recommended risk factors. QRS fragmentation was the only independent predictor of appropriate ICD therapies (hazard ratio, 3.47 [95% CI, 1.19–10.11]), and its integration in a model with current criteria increased the 5-year time-dependent area under the curve from 0.68 to 0.81 ( P =0.006). Patients with congestive heart failure or reduced left ventricular ejection fraction had a higher risk of nonarrhythmic death or heart transplantation (hazard ratio, 11.01 [95% CI, 2.96–40.95]). Conclusions: Patients with tetralogy of Fallot and an ICD experience high rates of appropriate therapies, including those implanted in primary prevention. The considerable long-term burden of ICD-related complications, however, underlines the need for careful candidate selection. A combination of easy-to-use criteria including QRS fragmentation might improve risk stratification. Registration: URL: https://www.clinicaltrials.gov ; Unique identifier: NCT03837574.

Published
2020
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3. Sex Differences in Outcomes of Tetralogy of Fallot Patients With Implantable Cardioverter-Defibrillators

Author

Victor Waldmann, Abdeslam Bouzeman, Guillaume Duthoit, Linda Koutbi, Francis Bessière, Fabien Labombarda, Christelle Marquié, Jean-Baptiste Gourraud, Pierre Mondoly, Jean Marc Sellal, Pierre Bordachar, Alexis Hermida, Alain Al Arnaout, Frédéric Anselme, Caroline Audinet, Yvette Bernard, Serge Boveda, Sok Sithikun Bun, Morgane Chassignolle, Gaël Clerici, Antoine Da Costa, Maxime de Guillebon, Pascal Defaye, Nathalie Elbaz, Romain Eschalier, Rodrigue Garcia, Charles Guenancia, Benoit Guy-Moyat, Franck Halimi, Didier Irles, Laurence Iserin, François Jourda, Magalie Ladouceur, Philippe Lagrange, Mikael Laredo, Jacques Mansourati, Grégoire Massoulié, Amel Mathiron, Philippe Maury, Anne Messali, Kumar Narayanan, Cédric Nguyen, Sandro Ninni, Marie-Cécile Perier, Bertrand Pierre, Penelope Pujadas, Frédéric Sacher, Pascal Sagnol, Ardalan Sharifzadehgan, Camille Walton, Pierre Winum, Cyril Zakine, Laurent Fauchier, Raphaël Martins, Jean-Luc Pasquié, Jean-Benoit Thambo, Xavier Jouven, Nicolas Combes, Eloi Marijon, Chrystelle Akret, Jean-Paul Albenque, Vincent Algalarrondo, Christine Alonso, Denis Amet, Frédéric Ansselme, Anouk Asselin, Nicolas Badenco, Hugues Bader, Marc Badoz, Pierre Baudinaud, Nathalie Behar, Mouna Ben Kilani, Géraldine Bertaux, Cathy Bertrand, Francis Bessiere, Hughes Blangy, Damien Bonnet, Pierre Bordchar, Paul Bru, Adrien Carabelli, Christèle Cardin, Bruno Cauchemez, Tej Chalbia, Laure Champ-Rigot, Thomas Chastre, Philippe Chevallier, Nicolas Clementy, Stéphane Combes, Christian De Chillou, Maxime De Guillebon, Bruno Degand, Jean-Claude Deharo, Nicolas Derval, Sylvie Di Filippo, Guillaume Domain, Antoine Dompnier, Arnaud Dulac, Alexandre Duparc, D Cécile Duplantier, Rim El Bouazzaoui, Bogdan Enache, Fabrice Extramiana, Pierre Fiorello, Pierre Frey, Luc Freysz, Vincent Galand, Estelle Gandjbakhch, Kevin Gardey, Olivier Geoffroy, Bénédicte Godin, Samuel Goussot, Caroline Grimard, Jean-Baptiste Guichard, Michel Haissaguerre, David Hamon, Sébastien Hascoet, Karim Hasni, Jean-Sylvain Hermida, Françoise Hidden-Lucet, Mélèze Hocini, Jérome Hourdain, Peggy Jacon, Gaël Jauvert, Frédéric Jean, Nicolas Johnson, Pierre Khattar, Ziad Khoueiry, Rita Koutbi, Guillaume Laborie, Gabriel Lactu, Pierre-Marc Lallemand, Gabriel Laurent, Thomas Lavergne, Arnaud Lazarus, Laurianne Le Gloan, Christophe Leclercq, Antoine Leenhardt, Nicolas Lellouche, Christophe Loose, Philippe Mabo, Alice Maltret, Franck Mandel, Christelle Marquie, Carole Maupain, Antoine Milhelm, Paul Milliez, Adrian Mirolo, Ghassan Moubarak, Stéphane Mourot, Jacky Ollitrault, Pierre Ollitrault, Akli Otmani, Jean-Luc Pasquie, Dominique Pavin, Séverinne Philibert, Damien Poindron, Charlotte Potelle, Vincent Probst, Paul Puie, Anne Rollin, Cécile Romeyer-Bouchard, Nicolas Sadoul, Audrey Sagnard, Arnaud Savoure, Didier Scarlatti, Fabien Squara, Nikita Tanese, Jean Benoit Thambo, Olivier Thomas, Emie Varlet, Sandrine Venier, Quentin Voglimacci Stephanopoli, Xavier Waintraub, Françoise Wiart, Alexandre Zhao, Amir Zouaghi, Paris-Centre de Recherche Cardiovasculaire (PARCC (UMR_S 970/ U970)), Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CHU Pontchaillou [Rennes], Laboratoire Traitement du Signal et de l'Image (LTSI), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Clinique Pasteur, Clinique Pasteur [Toulouse], and This work was supported by the French Institute of Health and Medical Research, Fédération Française de Cardiologie, and Société Française de Cardiologie. The authors have reported that they have no relationships relevant to the contents of this paper to disclose.

Subjects
Male, Adult, Heart Defects, Congenital, Sex Characteristics, sudden death, Middle Aged, congenital heart disease, Defibrillators, Implantable, Cohort Studies, implantable cardioverter-defibrillator, Death, Sudden, Cardiac, Tetralogy of Fallot, sex, Humans, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, Female, women, ventricular arrhythmia
Abstract

International audience; Background: Women with congenital heart disease at high risk for sudden cardiac death have been poorly studied thus far.Objectives: The aim of this study was to assess sex-related differences in patients with tetralogy of Fallot (TOF) and implantable cardioverter-defibrillators (ICDs).Methods: Data were analyzed from the DAI-T4F (French National Registry of Patients With Tetralogy of Fallot and Implantable Cardioverter Defibrillator) cohort study, which has prospectively enrolled all patients with TOF with ICDs in France since 2010. Clinical events were centrally adjudicated by a blinded committee.Results: A total of 165 patients (mean age 42.2 ± 13.3 years) were enrolled from 40 centers, including 49 women (29.7%). Among the 9,692 patients with TOF recorded in the national database, the proportion of women with ICDs was estimated to be 1.1% (95% CI: 0.8%-1.5%) vs 2.2% (95% CI: 1.8%-2.6%) in men (P < 0.001). The clinical profiles of patients at implantation, including the number of risk factors for ventricular arrhythmias, were similar between women and men. During a median follow-up period of 6.8 years (IQR: 2.5-11.4 years), 78 patients (47.3%) received at least 1 appropriate ICD therapy, without significant difference in annual incidences between women (12.1%) and men (9.9%) (HR: 1.22; 95% CI: 0.76-1.97; P = 0.40). The risk for overall ICD-related complications was similar in women and men (HR: 1.33; 95% CI: 0.81-2.19; P = 0.30), with 24 women (49.0%) experiencing at least 1 complication.Conclusions: Our findings suggest that women with TOF at high risk for sudden cardiac death have similar benefit/risk balance from ICD therapy compared with men. Whether ICD therapy is equally offered to at-risk women vs men warrants further evaluation in TOF as well as in other congenital heart disease populations. (French National Registry of Patients With Tetralogy of Fallot and Implantable Cardioverter Defibrillator [DAI-T4F]; NCT03837574)

Published
2022
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4. Insights from atrial surface activation throughout atrial tachycardia cycle length: A new mapping tool

Author

Nathaniel Thompson, Konstantinos Vlachos, Claire A. Martin, Josselin Duchateau, William Escande, Michel Haïssaguerre, Mélèze Hocini, Nicolas Derval, Frederic Sacher, Antonio Frontera, Ghassen Cheniti, Grégoire Massoulié, Michael Wolf, Clémentine André, Anna Lam, Thomas Pambrun, Yosuke Nakatani, Hubert Cochet, Takeshi Kitamura, Felix Bourier, Masateru Takigawa, Li Jun Zeng, Ruairidh Martin, Arnaud Denis, Jean-Rodolphe Roux, and Pierre Jaïs

Subjects
Male, medicine.medical_specialty, medicine.medical_treatment, Catheter ablation, 030204 cardiovascular system & hematology, 03 medical and health sciences, 0302 clinical medicine, Heart Conduction System, Physiology (medical), Internal medicine, Tachycardia, Supraventricular, Humans, Medicine, Prospective Studies, 030212 general & internal medicine, Cycle length, Atrial tachycardia, business.industry, Middle Aged, Atrial activation, Electrophysiology, Catheter Ablation, Cardiology, Female, medicine.symptom, Electrophysiologic Techniques, Cardiac, Cardiology and Cardiovascular Medicine, business, Algorithms, Software
Abstract

A novel "LUMIPOINT" software in the Rhythmia system (Boston Scientific) displays a histogram of activated area over the entire atrial tachycardia (AT) cycle length (CL) with a normalized score.The purpose of this study was to examine whether the pattern of this global activation histogram (GAH) identified reentrant vs focal AT and whether a decrease in atrial activation area, shown as valleys in the GAH, identifies isthmuses.One hundred eight activation maps of ATs (17 focal, 57 macroreentrant, 21 localized, 13 multiple loop) in 67 patients were reviewed retrospectively with the LUMIPOINT software. The ACTIVATION SEARCH feature highlighted the activated area in a given time period irrespective of the activation map. A 30-ms unit time interval was set, and the GAH patterns and electrophysiological properties of highlighted areas were examined.Focal ATs systematically displayed a plateau with GAH-Score0.1 for at least 30% of the CL. Most reentrant ATs (90/91 [98.9%]) lacked this plateau and displayed activity covering the entire CL, with 2 [1-2] GAH-Valleys per tachycardia. Each GAH-Valley highlighted 1 [1-2] areas in the map. Among 264 highlighted areas, 198 (75.0%) represented slow conduction, 19 (7.2%) lines of block, 27 (10.2%) wavefront collision, 3 (1.1%) unknown, and 17 (6.4%) absence of activation in focal ATs. Practical ablation sites all matched one of the highlighted areas based on GAH-Valleys, and they corresponded better with areas highlighted by GAH-Score ≤0.2 (P.0001).GAH shows focal vs reentrant mechanisms at first glance. Decrease in activated areas (displayed by GAH-Valleys) is mostly due to slow conduction and highlights areas of special interest, with 100% sensitivity for isthmus identification.

Published
2019
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5. Impact of Pulmonary Valve Replacement on Ventricular Arrhythmias in Patients With Tetralogy of Fallot and Implantable Cardioverter-Defibrillator

Author

Cédric Nguyen, François Jourda, Alexis Hermida, Pascal Defaye, Frederic Sacher, Yvette Bernard, Serge Boveda, Marie-Cécile Perier, Philippe Chevalier, Pierre Winum, Mikael Laredo, Abdeslam Bouzeman, C. Marquie, Raphaël P. Martins, Jean Benoit Thambo, Laurence Iserin, Maxime De Guillebon, Kévin Gardey, Antoine Da Costa, Pierre Bordachar, Benoit Guy-Moyat, Anouk Asselin, Jean Marc Sellal, Francis Bessière, Linda Koutbi, Pierre Mondoly, Victor Waldmann, Grégoire Massoulié, Jacques Mansourati, Roland Henaine, Romain Eschalier, Fabien Labombarda, Sandro Ninni, Charles Guenancia, Sylvie Di Filippo, Philippe Maury, Rodrigue Garcia, Bertrand Pierre, Magalie Ladouceur, Caroline Audinet, Amel Mathiron, Camille Walton, Philippe Lagrange, Guillaume Duthoit, Xavier Jouven, Didier Irles, Nicolas Combes, Jean Luc Pasquié, G Clerici, Frédéric Anselme, Jean-Baptiste Gourraud, Eloi Marijon, Hôpital Louis Pradel [CHU - HCL], Hospices Civils de Lyon (HCL), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Hôpital de la Timone [CHU - APHM] (TIMONE), CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Centre hospitalier universitaire de Nantes (CHU Nantes), CHU Toulouse [Toulouse], Imagerie Adaptative Diagnostique et Interventionnelle (IADI), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), CHU Bordeaux [Bordeaux], CHU Amiens-Picardie, CHU Rouen, Normandie Université (NU), Paris-Centre de Recherche Cardiovasculaire (PARCC (UMR_S 970/ U970)), Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Groupe Hospitalier Bretagne Sud (GHBS), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Clinique Pasteur [Toulouse], CHU Sud Saint Pierre [Ile de la Réunion], Centre Hospitalier Universitaire de Saint-Etienne (CHU de Saint-Etienne), Centre hospitalier de Pau, Centre Hospitalier Universitaire [Grenoble] (CHU), CHU Clermont-Ferrand, Centre hospitalier universitaire de Poitiers (CHU Poitiers), CHU Dijon, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), CHU Limoges, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Centre Hospitalier Chalon-sur-Saône William Morey, Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Clinical sciences, Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), SELLAL, Jean-Marc, and Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)

Subjects
Adult, Male, medicine.medical_specialty, medicine.medical_treatment, [SDV]Life Sciences [q-bio], Population, 030204 cardiovascular system & hematology, Sudden death, Sudden cardiac death, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Interquartile range, Internal medicine, medicine, Humans, Implantable cardioverter defibrilator, 030212 general & internal medicine, Cardiac Surgical Procedures, education, Pulmonary Valve/surgery, ComputingMilieux_MISCELLANEOUS, Tetralogy of Fallot, Cause of death, Pulmonary Valve, education.field_of_study, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, business.industry, Ventriculat arrhythmia, Arrhythmias, Cardiac, Middle Aged, medicine.disease, Implantable cardioverter-defibrillator, eye diseases, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Defibrillators, Implantable, 3. Good health, Tetralogy of Fallot/surgery, Arrhythmias, Cardiac/therapy, Pulmonary valve replacement, Cohort, Cardiology, Female, Cardiology and Cardiovascular Medicine, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

International audience; Objectives: This study aimed to assess the impact of pulmonary valve replacement (PVR) on ventricular arrhythmias burden in a population of tetralogy of Fallot (TOF) patients with continuous cardiac monitoring by implantable cardioverter-defibrillators (ICDs).Background: Sudden cardiac death is a major cause of death in TOF, and right ventricular overload is commonly considered to be a potential trigger for ventricular arrhythmias.Methods: Data were analyzed from a nationwide French ongoing study (DAI-T4F) including all TOF patients with an ICD since 2000. Survival data with recurrent events were used to compare the burden of appropriate ICD therapies before and after PVR in patients who underwent PVR over the study period.Results: A total of 165 patients (mean age 42.2 ± 13.3 years, 70.1% male) were included from 40 centers. Over a median follow-up period of 6.8 (interquartile range: 2.5 to 11.4) years, 26 patients (15.8%) underwent PVR. Among those patients, 18 (69.2%) experienced at least 1 appropriate ICD therapy. When considering all ICD therapies delivered before (n = 62) and after (n = 16) PVR, the burden of appropriate ICD therapies was significantly lower after PVR (HR: 0.21; 95% confidence interval [CI]: 0.08 to 0.56; p = 0.002). Respective appropriate ICD therapies rates per 100 person-years were 44.0 (95% CI: 35.7 to 52.5) before and 13.2 (95% CI: 7.7 to 20.5) after PVR (p < 0.001). In the overall cohort, PVR before ICD implantation was also independently associated with a lower risk of appropriate ICD therapy in primary prevention patients (HR: 0.29 [95% CI: 0.10 to 0.89]; p = 0.031).Conclusions: In this cohort of high-risk TOF patients implanted with an ICD, the burden of appropriate ICD therapies was significantly reduced after PVR. While optimal indications and timing for PVR are debated, these findings suggest the importance of considering ventricular arrhythmias in the overall decision-making process. (French National Registry of Patients With Tetralogy of Fallot and Implantable Cardioverter Defibrillator [DAI-T4F]; NCT03837574).

Published
2021
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6. Characteristics of Scar-Related Ventricular Tachycardia Circuits Using Ultra-High-Density Mapping

Author

Arnaud Denis, Philippe Maury, Frédéric Sacher, Thomas Pambrun, Ruairidh Martin, Nicolas Derval, Claire A. Martin, Masateru Takigawa, Grégoire Massoulié, Corentin Dallet, Caterina Bisceglia, Rui Shi, Christian Meyer, Michael Wolf, Rémi Dubois, Anne Rollin, Pierre Jaïs, Josselin Duchâteau, Michel Haïssaguerre, Konstantinos Vlachos, Nathaniel Thompson, Heidi Estner, Mélèze Hocini, Ghassen Cheniti, Antonio Frontera, Tom Wong, Paolo Della Bella, and Takeshi Kitamura

Subjects
Male, Tachycardia, medicine.medical_specialty, Ultra high density, Time Factors, Heart disease, Myocardial Infarction, Action Potentials, 030204 cardiovascular system & hematology, Ventricular tachycardia, Cicatrix, 03 medical and health sciences, 0302 clinical medicine, Heart Rate, Predictive Value of Tests, Risk Factors, Physiology (medical), Internal medicine, medicine, Humans, 030212 general & internal medicine, Coronary sinus, Aged, business.industry, Signal Processing, Computer-Assisted, Reentry, Middle Aged, medicine.disease, Europe, Treatment Outcome, Multi center study, Catheter Ablation, Tachycardia, Ventricular, Cardiology, Female, medicine.symptom, Electrophysiologic Techniques, Cardiac, Cardiology and Cardiovascular Medicine, business
Abstract

Background: Ventricular tachycardia (VT) with structural heart disease is dependent on reentry within scar regions. We set out to assess the VT circuit in greater detail than has hitherto been possible, using ultra-high-density mapping. Methods: All ultra-high-density mapping guided VT ablation cases from 6 high-volume European centers were assessed. Maps were analyzed offline to generate activation maps of tachycardia circuits. Topography, conduction velocity, and voltage of the VT circuit were analyzed in complete maps. Results: Thirty-six tachycardias in 31 patients were identified, 29 male and 27 ischemic. VT circuits and isthmuses were complex, 11 were single loop and 25 double loop; 3 had 2 entrances, 5 had 2 exits, and 15 had dead ends of activation. Isthmuses were defined by barriers, which included anatomic obstacles, lines of complete block, and slow conduction (in 27/36 isthmuses). Median conduction velocity was 0.08 m/s in entrance zones, 0.29 m/s in isthmus regions ( P P =0.002). Median local voltage in the isthmus was 0.12 mV during tachycardia and 0.06 mV in paced/sinus rhythm. Two circuits were identifiable in 5 patients. The median timing of activation was 16% of diastole in entrances, 47% in the mid isthmus, and 77% in exits. Conclusions: VT circuits identified were complex, some of them having multiple entrances, exits, and dead ends. The barriers to conduction in the isthmus seem to be partly functional in 75% of circuits. Conduction velocity in the VT isthmus slowed at isthmus entrances and exits when compared with the mid isthmus. Isthmus voltage is often higher in VT than in sinus or paced rhythms.

Published
2018
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