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Durand J, Bonnet JL, Lazarus A, Taieb J, Rosier A, Mittal S. Using technology to improve reconnection to remote monitoring in cardiac implantable electronic device patients. Cardiovasc Digit Health J 2024; 5:1-7. [PMID: 38390582 PMCID: PMC10878941 DOI: 10.1016/j.cvdhj.2023.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024] Open
Abstract
Background Remote monitoring (RM) of cardiac implantable electronic device (CIED) patients is now considered standard of care. However, a fundamental requirement of RM is continuous connectivity between the patient's implanted device and the CIED manufacturer's central server. This study examined the rate of RM disconnections in CIED recipients and the impact of short message service (SMS) to facilitate reconnections. Methods Using a platform that collects RM data from CIED manufacturers, we retrospectively examined the disconnection and reconnection events in 6085 patients from 20 medical centers. Each medical center reported their usual practice regarding RM disconnections, which consisted of either an automatic SMS from the platform to patients who were disconnected for 2 weeks or the standard of care (SC) of a phone call to patients. Results During a 1-year period, 43% of patients had at least 1 disconnection. Half of these patients experienced multiple disconnections. The use of SMS reduced the time to reconnection by 43% in comparison to SC. The median time to reconnect a disconnected patient was 11.0 [3.2, 29.0] days for SC vs 6.3 [1.3, 22.0] days for SMS (P < .0001). Furthermore, there was a high rate of reconnections within the first 48 hours of the SMS message, which was nearly double that in the SC arm. Conclusion This study demonstrates the feasibility of an automatic system to deliver an SMS to patients with a disconnected CIED to facilitate early reconnection to RM.
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Affiliation(s)
| | | | | | - Jérôme Taieb
- Centre Hospitalier Intercommunal Aix Pertuis, Aix en Provence, France
| | - Arnaud Rosier
- Implicity, Paris, France
- Jacques Cartier Private Hospital, Massy, France
| | - Suneet Mittal
- Valley Health System and Snyder Center for Comprehensive Atrial Fibrillation, Ridgewood, New Jersey
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Crespin E, Rosier A, Ibnouhsein I, Gozlan A, Lazarus A, Laurent G, Menet A, Bonnet JL, Varma N. Improved diagnostic performance of insertable cardiac monitors by an artificial intelligence-based algorithm. Europace 2023; 26:euad375. [PMID: 38170474 PMCID: PMC10787483 DOI: 10.1093/europace/euad375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 12/13/2023] [Indexed: 01/05/2024] Open
Abstract
AIMS The increasing use of insertable cardiac monitors (ICM) produces a high rate of false positive (FP) diagnoses. Their verification results in a high workload for caregivers. We evaluated the performance of an artificial intelligence (AI)-based ILR-ECG Analyzer™ (ILR-ECG-A). This machine-learning algorithm reclassifies ICM-transmitted events to minimize the rate of FP diagnoses, while preserving device sensitivity. METHODS AND RESULTS We selected 546 recipients of ICM followed by the Implicity™ monitoring platform. To avoid clusterization, a single episode per ICM abnormal diagnosis (e.g. asystole, bradycardia, atrial tachycardia (AT)/atrial fibrillation (AF), ventricular tachycardia, artefact) was selected per patient, and analyzed by the ILR-ECG-A, applying the same diagnoses as the ICM. All episodes were reviewed by an adjudication committee (AC) and the results were compared. Among 879 episodes classified as abnormal by the ICM, 80 (9.1%) were adjudicated as 'Artefacts', 283 (32.2%) as FP, and 516 (58.7%) as 'abnormal' by the AC. The algorithm reclassified 215 of the 283 FP as normal (76.0%), and confirmed 509 of the 516 episodes as abnormal (98.6%). Seven undiagnosed false negatives were adjudicated as AT or non-specific abnormality. The overall diagnostic specificity was 76.0% and the sensitivity was 98.6%. CONCLUSION The new AI-based ILR-ECG-A lowered the rate of FP ICM diagnoses significantly while retaining a > 98% sensitivity. This will likely alleviate considerably the clinical burden represented by the review of ICM events.
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Affiliation(s)
| | - Arnaud Rosier
- Implicity SAS, Paris, France
- Jacques Cartier Private Hospital, Massy, France
| | | | | | - Arnaud Lazarus
- Service de rythmologie interventionnelle, Clinique Ambroise Paré, Neuilly sur Seine, France
| | - Gabriel Laurent
- Service de rythmologie et Insuffisance Cardiaque, Centre Hospitalier Universitaire, Dijon, France
| | - Aymeric Menet
- Département de Cardiologie, Groupe Hospitalier de l'Institut Catholique de Lille, Lomme, France
| | | | - Niraj Varma
- Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH, USA
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Lazarus A, Gentils M, Klaes S, Ibnouhsein I, Rosier A, Moubarak G, Bonnet JL, Singh JP, Defaye P. Filtering of remote monitoring alerts transmitted by cardiac implantable electronic devices and reclassification of atrial fibrillation events by a new algorithm. Cardiovasc Digit Health J 2023; 4:149-154. [PMID: 37850045 PMCID: PMC10577488 DOI: 10.1016/j.cvdhj.2023.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023] Open
Abstract
Background Cardiac implantable electronic devices (CIEDs) are an important means of atrial fibrillation (AF) detection. However, the AF burden measurements and notifications transmitted by CIEDs are not directly related to the clinical classification of paroxysmal, persistent, or permanent AF. Moreover, AF alerts are the most frequent form of notification, imposing a time-consuming review on caregivers. Objective The purpose of this study was to compare the incidence of standard AF burden-related notifications in remotely monitored (RM) patients with the incidence of events detected after filtering by a new proprietary algorithm implementing the standard European Society of Cardiology classification of AF. Methods Between 2017 and 2022, all RM patients with daily AF burden measurements available for ≥30 days and ≥1 AF burden-related alerts were enrolled at 68 medical centers. The incidence of CIED-transmitted alerts was compared to that of AF episodes detected by a new proprietary algorithm and classified as "first recorded episode of AF", "paroxysmal AF", "increased paroxysmal AF", "persistent AF", or "end of persistent AF back to paroxysmal AF or back to sinus rhythm." Results Between January 2017 and September 2022, this retrospective study analyzed data from 4162 recipients of an Abbott, Biotronik, Boston Scientific, or Medtronic CIED, RM over mean follow-up of 605 ± 386 days. The algorithm broke down 67,883 AF burden-related alerts into 9728 (14.3%) clinically relevant AF events. Conclusion A new AF alert algorithm successfully identified clinically significant AF events in RM CIED recipients and would markedly limit the total number of transmitted alerts that require review by caregivers.
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Affiliation(s)
- Arnaud Lazarus
- Clinique Medico-Chirurgicale Ambroise Paré, Neuilly Sur Seine, France
| | | | | | | | - Arnaud Rosier
- Implicity, Paris, France
- Jacques Cartier Private Hospital, Massy, France
| | - Ghassan Moubarak
- Clinique Medico-Chirurgicale Ambroise Paré, Neuilly Sur Seine, France
| | | | - Jagmeet P. Singh
- Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Pascal Defaye
- Grenoble Alpes University and University Hospital, Grenoble, France
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Gras D, Clémenty N, Ploux S, Guyomar Y, Legallois D, Segreti L, Blangy H, Laurent G, Bizeau O, Fauquembergue S, Lazarus A. CRT-D replacement strategy: results of the BioCONTINUE study. J Interv Card Electrophysiol 2023; 66:1201-1209. [PMID: 36459310 DOI: 10.1007/s10840-022-01440-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/25/2022] [Indexed: 12/03/2022]
Abstract
BACKGROUND In patients with cardiac resynchronization therapy defibrillators (CRT-Ds), the need for implantable cardioverter-defibrillator (ICD) back-up may be questionable at time of CRT-D replacement (REP) if ICD implant criteria are no longer met due to an improved left ventricular ejection fraction (LVEF) and if no major ventricular arrhythmic event (VAE) occurred during the CRT-D lifetime. The aim of our study was to assess the relevance of ICD back-up and predictors of VAE after REP in primary prevention CRT-D patients. METHODS The prospective, observational, international BioCONTINUE study investigated the rate of patients with at least 1 sustained VAE (sVAE) post-REP and searched for predictive factors of sVAE. RESULTS Two hundred seventy-six patients (70 ± 10 years, 77% men, mean LVEF 40.6 ± 12.6%) were followed for 28.4 ± 10.2 months. The rate of patients with sVAE was 8.3%, 10.3%, and 21.2% at 1, 2, and 4 years post-REP. Patients without persistent ICD indication at REP still had a sVAE rate of 5.7% (95% CI 2.3-11.5%) at 2 years. In multivariate analysis, predictive factors of subsequent sVAE were (i) persistent ICD indication (hazard ratio (HR) 3.6; 95% CI 1.6-8.3; p = 0.003); (ii) 64-72 years of age as compared to ≥ 79 years (HR 3.7; 95% CI 1.4-9.7; p = 0.008); and (iii) ischemic heart disease (HR 4.4; 95% CI 2.1-9.3; p < 0.0001). CONCLUSIONS The risk of sVAE (21.2% at 4 years post-REP) depends on age, ischemic heart disease, and ICD indication at the time of REP. A non-trivial risk of sVAE remains in patients without persistent ICD indication. CLINICAL TRIAL REGISTRATION NCT02323503.
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Affiliation(s)
- Daniel Gras
- Hôpital Privé du Confluent, 2-4 Rue Eric Tabarly, 44200, Nantes, France.
| | | | - Sylvain Ploux
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Fondation Bordeaux Université, Bordeaux University Hospital (CHU), Cardio-Thoracic Unit, 33600, Pessac, France
| | - Yves Guyomar
- Centre Hospitalier Saint Philibert, Lomme, France
| | | | | | | | | | - Olivier Bizeau
- Centre Hospitalier Régional Orléans La Source, Orléans, France
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Rasheed AH, Romero V, Bertails-Descoubes F, Wuhrer S, Franco JS, Lazarus A. A Visual Approach to Measure Cloth-Body and Cloth-Cloth Friction. IEEE Trans Pattern Anal Mach Intell 2022; 44:6683-6694. [PMID: 34270415 DOI: 10.1109/tpami.2021.3097547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Measuring contact friction in soft-bodies usually requires a specialised physics bench and a tedious acquisition protocol. This makes the prospect of a purely non-invasive, video-based measurement technique particularly attractive. Previous works have shown that such a video-based estimation is feasible for material parameters using deep learning, but this has never been applied to the friction estimation problem which results in even more subtle visual variations. Because acquiring a large dataset for this problem is impractical, generating it from simulation is the obvious alternative. However, this requires the use of a frictional contact simulator whose results are not only visually plausible, but physically-correct enough to match observations made at the macroscopic scale. In this paper, which is an extended version of our former work A. H. Rasheed, V. Romero, F. Bertails-Descoubes, S. Wuhrer, J.-S. Franco, and A Lazarus, "Learning to measure the static friction coefficient in cloth contact," in Proc. IEEE/CVF Conf. Comput. Vis. Pattern Recognit., 2020, pp. 9909-9918, we propose to our knowledge the first non-invasive measurement network and adjoining synthetic training dataset for estimating cloth friction at contact, for both cloth-hard body and cloth-cloth contacts. To this end we build a protocol for validating and calibrating a state-of-the-art frictional contact simulator, in order to produce a reliable dataset. We furthermore show that without our careful calibration procedure, the training fails to provide accurate estimation results on real data. We present extensive results on a large acquired test set of several hundred real video sequences of cloth in friction, which validates the proposed protocol and its accuracy.
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ROSIER A, Crespin E, Cerrato A, Ibnouhsein I, Lazarus A, Menet A, Bonnet JL, Varma N. A NOVEL AI ALGORITHM APPLIED TO ILR TRANSMISSIONS: PERFORMANCE AND AGREEMENT RATES WITH HEALTHCARE PROFESSIONALS. Cardiovascular Digital Health Journal 2022. [DOI: 10.1016/j.cvdhj.2022.07.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
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Klein C, Finat L, Abbey S, Eschalier R, Fossati F, Lazarus A, Marijon E, Pasquié JL, Ploux S, Salerno F, Williatte L, Gras D, Sacher F, Taieb J, Boveda S, Guédon-Moreau L. Remote monitoring for cardiac implantable electronic devices: A practical guide. Arch Cardiovasc Dis 2022; 115:406-407. [DOI: 10.1016/j.acvd.2022.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/29/2022] [Accepted: 03/30/2022] [Indexed: 11/28/2022]
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Rosier A, Crespin E, Lazarus A, Laurent G, Menet A, Gozlan A, Varma N. A novel machine learning algorithm has the potential to reduce by 1/3 the quantity of ILR episodes needing review. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Implantable Loop Recorders (ILRs) are increasingly used and generate a high workload for timely adjudication of ECG recordings. In particular, the excessive false positive rate leads to a significant review burden.
Purpose
A novel machine learning algorithm was developed to reclassify ILR episodes in order to decrease by 80% the False Positive rate while maintaining 99% sensitivity.
This study aims to evaluate the impact of this algorithm to reduce the number of abnormal episodes reported in Medtronic ILRs.
Methods
Among 20 European centers, all Medtronic ILR patients were enrolled during the 2nd semester of 2020. Using a remote monitoring platform, every ILR transmitted episode was collected and anonymised.
For every ILR detected episode with a transmitted ECG, the new algorithm reclassified it applying the same labels as the ILR (asystole, brady, AT/AF, VT, artifact, normal). We measured the number of episodes identified as false positive and reclassified as normal by the algorithm, and their proportion among all episodes.
Results
In 370 patients, ILRs recorded 3755 episodes including 305 patient-triggered and 629 with no ECG transmitted. 2821 episodes were analyzed by the novel algorithm, which reclassified 1227 episodes as normal rhythm. These reclassified episodes accounted for 43% of analyzed episodes and 32.6% of all episodes recorded.
Conclusion
A novel machine learning algorithm significantly reduces the quantity of episodes flagged as abnormal and typically reviewed by healthcare professionals.
Funding Acknowledgement
Type of funding sources: None. Figure 1. ILR episodes analysis
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Affiliation(s)
- A Rosier
- Jacques Cartier Private Hospital, Massy, France
| | | | - A Lazarus
- Clinique Medico-Chirurgicale Ambroise Pare, Neuilly sur Seine, France
| | - G Laurent
- University Hospital of Dijon, Dijon, France
| | | | | | - N Varma
- Cleveland Clinic, Cleveland, United States of America
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Rosier A, Gentils M, Lazarus A, Moubarak G, Klaes S, Durand J, Danoun K. Most remote monitoring alerts about atrial fibrillation are not relevant to identify clinically significant events: proposal of a new approach. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Cardiac Implantable Electronic Devices (CIEDs) are an important tool for detecting Atrial Fibrillation (AF) in implanted patients.
However AF burden values and notifications emitted by the manufacturer's platforms are not directly related to the standard classification of AF types (paroxysmal, persistent or permanent) that are used in daily practice. Moreover, AF alerts represent the most frequent notifications for implanted patients resulting in a time-consuming review for healthcare professionals.
Purpose
This study intends to compare the manufacturers' atrial burden related notifications in remotely monitored (RM) patients to the detection of clinically significant events with a new proprietary algorithm.
Methods
From 2017 to 2020, all RM patients from 57 centers with daily atrial burden measurements available for at least 30 days and at least one atrial burden related alert were enrolled.
All atrial burden related alerts emitted by the manufacturers' platforms were compared to the following clinically significant events (based on the standard classification) detected by a new proprietary algorithm: “1st recorded AT/AF episode”, “paroxysmal AF”, “increasing paroxysmal AF”, “persistent AF”, and “end of persistent AF”.
Results
This multicentric retrospective study analyzed, between 01/2017 and 10/2020, 2 463 RM patients with a Biotronik, Boston Scientific or Medtronic CIED (implantable defibrillator, pacemaker or implantable loop recorder), with a mean follow-up of 490 days [33–1386].
A total of 22 345 manufacturers' atrial burden related alerts were emitted while only 4 826 clinically significant events were detected by the algorithm: 1770 “1st recorded AT/AF episode”, 620 “Paroxysmal AF”, 252 “Increasing paroxysmal AF”, 1373 “Persistent AF”, and 811 “End of persistent AF”.
These clinically significant events represent only 22% of the total number of atrial burden related alerts emitted by the manufacturers' platforms.
Conclusion
A new AF alert algorithm could have the potential to identify clinically significant AF status change in remotely monitored implanted patients while reducing the total number of alerts generated and thus the review burden for healthcare professionals.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- A Rosier
- Jacques Cartier Private Hospital, Massy, France
| | | | - A Lazarus
- Clinique Medico-Chirurgicale Ambroise Pare, Neuilly sur Seine, France
| | - G Moubarak
- Clinique Medico-Chirurgicale Ambroise Pare, Neuilly sur Seine, France
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Rosier A, Crespin E, Lazarus A, Laurent G, Menet A, Gozlan A, Varma N. B-PO04-037 A NOVEL PROPRIETARY ALGORITHM REDUCES THE FALSE POSITIVE RATE OF MEDTRONIC LNQ11 ICM DEVICES BY 79%. Heart Rhythm 2021. [DOI: 10.1016/j.hrthm.2021.06.733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Trejo M, Lazarus A, Vandembroucq D, Kolb E. Deformations of a 2D Elastica under a random distribution of normal loads. EPJ Web Conf 2021. [DOI: 10.1051/epjconf/202124910006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We describe the deformations of a 2D elastic structure (beam, rod or filament) subjected to randomly distributed local orthogonal forces. The fiber is in quasistatic equilibrium condition when a given force distribution is acting on it. To analyze the effects of force fluctuations on the observed configurations, we study the behavior of the bending moment at the origin and the filament curvature, as a function of nominal values of the local mean forces and small, moderate and large fluctuations around them.
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Perrin T, Boveda S, Defaye P, Rosier A, Sadoul N, Bordachar P, Klug D, Ritter P, Belhameche M, Babuty D, Mansourati J, Lazarus A, Deharo JC. Role of medical reaction in management of inappropriate ventricular arrhythmia diagnosis: the inappropriate Therapy and HOme monitoRiNg (THORN) registry. Europace 2020; 21:607-615. [PMID: 30605510 PMCID: PMC6452297 DOI: 10.1093/europace/euy284] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 11/05/2018] [Indexed: 12/19/2022] Open
Abstract
AIMS Implantable cardioverter-defibrillators (ICDs) reduce sudden cardiac death in selected patients but inappropriate ICD shocks have been associated with increased mortality. The THORN registry aims to describe the rate of inappropriate ventricular arrhythmia diagnoses and therapies in patients followed by remote monitoring, as well as the following delay to next patient contact (DNPC). METHODS AND RESULTS One thousand eight hundred and eighty-two patients issued from a large remote monitoring database first implanted with an ICD for primary or secondary prevention in 110 French hospitals from 2007 to 2014 constitute the THORN population. Among them, 504 patients were additionally followed prospectively for evaluation of the DNPC. Eight hundred and ninety-five out of 1551 (58%) patients had ischaemic heart disease and 358/771 (46%) were implanted for secondary prevention. During 13.7 ± 3.4 months of follow-up, the prevalence of first inappropriate diagnosis in a ventricular arrhythmia zone with enabled therapy was 162/1882 (9%). Among those patients, 122/162 (75%) suffered at least one inappropriate therapy and 58/162 (36%) at least one inappropriate shock. Eighty-three out of 162 (51%) of first inappropriate diagnosis occurred during the first 4 months following implantation. The median DNPC was 8 days (interquartile range 1-26). At least one other day with recording of an inappropriate diagnosis of the same cause occurred in 13/43 (30%) of available DNPC periods, with an inappropriate therapy in 7/13 (54%). CONCLUSION Inappropriate diagnoses occurred in 9% of patients implanted with an ICD during the first 14 months. The DNPC after inadequate ventricular arrhythmia diagnoses remains long in daily practice and should be optimized. CLINICALTRIALS.GOV IDENTIFIER NCT01594112.
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Affiliation(s)
- Tilman Perrin
- Department of Cardiology, Centre Hospitalier Universitaire La Timone, Marseille, France
| | - Serge Boveda
- Department of Cardiology, Clinique Pasteur, Toulouse, France
| | - Pascal Defaye
- Department of Cardiology, Centre Hospitalier Universitaire Albert Michalon, Grenoble, France
| | - Arnaud Rosier
- Department of Cardiology, Hôpital Privé Jacques Cartier, Massy, France
| | - Nicolas Sadoul
- Department of Cardiology, Centre Hospitalier Universitaire Brabois, Nancy, France
| | - Pierre Bordachar
- Department of Cardiology, Centre Hospitalier Universitaire de Haut-Lévêque, Pessac, France
| | - Didier Klug
- Department of Cardiology, Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - Philippe Ritter
- Department of Cardiology, Centre Hospitalier Universitaire de Haut-Lévêque, Pessac, France
| | - Mohamed Belhameche
- Department of Cardiology, Centre Hospitalier de Marne-la-Vallée, Jossigny, France
| | - Dominique Babuty
- Department of Cardiology, Centre Hospitalier Régional Universitaire Trousseau, Chambray-lès-Tours, France
| | - Jacques Mansourati
- Department of Cardiology, Centre Régional Hospitalier Universitaire Brest, Hôpital de La Cavale Blanche, Brest, France
| | - Arnaud Lazarus
- Department of Cardiology, Clinique Ambroise Paré, Neuilly-sur-Seine, France
| | - Jean-Claude Deharo
- Department of Cardiology, Centre Hospitalier Universitaire La Timone, Marseille, France
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Wahbi K, Porcher R, Laforêt P, Fayssoil A, Bécane HM, Lazarus A, Sochala M, Stojkovic T, Béhin A, Leonard-Louis S, Arnaud P, Furling D, Probst V, Babuty D, Pellieux S, Clementy N, Bassez G, Péréon Y, Eymard B, Duboc D. Development and Validation of a New Scoring System to Predict Survival in Patients With Myotonic Dystrophy Type 1. JAMA Neurol 2019; 75:573-581. [PMID: 29404559 DOI: 10.1001/jamaneurol.2017.4778] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance Life expectancy is greatly shortened in patients presenting with myotonic dystrophy type 1 (DM1), the most common neuromuscular disease. A reliable prediction of survival in patients with DM1 is critically important to plan personalized health supervision. Objective To develop and validate a prognostic score to predict 10-year survival in patients with DM1. Design, Setting, and Participants In this longitudinal cohort study, between January 2000 and November 2014, we enrolled 1296 adults referred to 4 tertiary neuromuscular centers in France for management of genetically proven DM1, including 1066 patients in the derivation cohort and 230 in the validation cohort. Data were analyzed from December 2016 to March 2017. Main Outcomes and Measures Factors associated with survival by multiple variable Cox modeling, including 95% confidence intervals, and development of a predictive score validated internally and externally. Mean values are reported with their standard deviations. Results Of the 1296 included patients, 670 (51.7%) were women, and the mean (SD) age was 39.8 (13.7) years. Among the 1066 patients (82.3%) in the derivation cohort, 241 (22.6%) died over a median (interquartile range) follow-up of 11.7 (7.7-14.3) years. Age, diabetes, need for support when walking, heart rate, systolic blood pressure, first-degree atrioventricular block, bundle-branch block, and lung vital capacity were associated with death. Simplified score points were attributed to each predictor, and adding these points yielded scores between 0 and 20, with 0 indicating the lowest and 20 the highest risk of death. The 10-year survival rate was 96.6% (95% CI, 94.4-98.9) in the group with 0 to 4 points, 92.2% (95% CI, 88.8-95.6) in the group with 5 to 7 points, 80.7% (95% CI, 75.4-86.1) in the group with 8 to 10 points, 57.9% (95% CI, 49.2-66.6) in the group with 11 to 13 points, and 19.4% (95% CI, 8.6-30.1) in the group with 14 points or more. In 230 patients (17.7%) included in the validation cohort, the 10-year survival rates for the groups with 0 to 4, 5 to 7, 8 to 10, 11 to 13, and 14 points or more were 99.3% (95% CI, 95.0-100), 80.6% (95% CI, 67.1-96.7), 79.3% (95% CI, 66.2-95.1), 43.2% (95% CI, 28.2-66.1), and 21.6% (95% CI, 10.0-46.8), respectively. The calibration curves did not deviate from the reference line. The C index was 0.753 (95% CI, 0.722-0.785) in the derivation cohort and 0.806 (95% CI, 0.758-0.855) in the validation cohort. Conclusions and Relevance The DM1 prognostic score is associated with long-term survival.
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Affiliation(s)
- Karim Wahbi
- Cardiology Department, Cochin Hospital, Filière Neuromusculaire, Paris-Descartes University, Sorbonne Paris Cité University, Assistance Publique-Hôpitaux de Paris, Paris, France.,Neurology Department, Centre de Référence de Pathologie Neuromusculaire Paris-Est, Myology Institute, Filière Neuromusculaire, Pitié-Salpêtrière Hospital, Paris, France.,Thérapie des Maladies du Muscle Strié, Institut de Myologie, INSERM UMRS 974, Paris, France
| | - Raphaël Porcher
- Assistance Publique-Hôpitaux de Paris, Hôtel-Dieu, Centre d'Epidémiologie Clinique, Paris, France.,Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité, INSERM U1153, Paris, France.,Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Pascal Laforêt
- Neurology Department, Centre de Référence de Pathologie Neuromusculaire Paris-Est, Myology Institute, Filière Neuromusculaire, Pitié-Salpêtrière Hospital, Paris, France
| | - Abdallah Fayssoil
- Neurology Department, Centre de Référence de Pathologie Neuromusculaire Paris-Est, Myology Institute, Filière Neuromusculaire, Pitié-Salpêtrière Hospital, Paris, France
| | - Henri Marc Bécane
- Neurology Department, Centre de Référence de Pathologie Neuromusculaire Paris-Est, Myology Institute, Filière Neuromusculaire, Pitié-Salpêtrière Hospital, Paris, France
| | - Arnaud Lazarus
- InParys Clinical Research Group, Clinique Ambroise Paré, Neuilly sur Seine, France
| | - Maximilien Sochala
- Cardiology Department, Cochin Hospital, Filière Neuromusculaire, Paris-Descartes University, Sorbonne Paris Cité University, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Tanya Stojkovic
- Neurology Department, Centre de Référence de Pathologie Neuromusculaire Paris-Est, Myology Institute, Filière Neuromusculaire, Pitié-Salpêtrière Hospital, Paris, France
| | - Anthony Béhin
- Neurology Department, Centre de Référence de Pathologie Neuromusculaire Paris-Est, Myology Institute, Filière Neuromusculaire, Pitié-Salpêtrière Hospital, Paris, France
| | - Sarah Leonard-Louis
- Neurology Department, Centre de Référence de Pathologie Neuromusculaire Paris-Est, Myology Institute, Filière Neuromusculaire, Pitié-Salpêtrière Hospital, Paris, France
| | - Pauline Arnaud
- Département de Génétique, Hôpital Bichat, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Denis Furling
- Paris-Sorbonne Université, UPMC, Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Centre de Recherches en Myologie, Institut de Myologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Vincent Probst
- L'Unite de Recherche de l'Institut du Thorax, Université de Nantes, INSERM UMR 1087, Nantes, France.,Institut du Thorax, Centre Hospitalier Universitaire de Nantes, Centre d'Investigation Clinique, Centre de Référence pour la Prise en Charge des Maladies Rythmiques Héréditaires de Nantes, Nantes, France
| | - Dominique Babuty
- Cardiology Department, Université François Rabelais, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Sybille Pellieux
- Functional Readaptation Department, Université François Rabelais, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Nicolas Clementy
- Cardiology Department, Université François Rabelais, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Guillaume Bassez
- Neurology Department, Centre de Référence de Pathologie Neuromusculaire Paris-Est, Myology Institute, Filière Neuromusculaire, Pitié-Salpêtrière Hospital, Paris, France
| | - Yann Péréon
- Centre de Référence des Maladies Neuromusculaires Rares Nantes-Angers, Filière Neuromusculaire, Centre Hospitalier Universitaire de Nantes, Nantes, France
| | - Bruno Eymard
- Neurology Department, Centre de Référence de Pathologie Neuromusculaire Paris-Est, Myology Institute, Filière Neuromusculaire, Pitié-Salpêtrière Hospital, Paris, France
| | - Denis Duboc
- Cardiology Department, Cochin Hospital, Filière Neuromusculaire, Paris-Descartes University, Sorbonne Paris Cité University, Assistance Publique-Hôpitaux de Paris, Paris, France.,Neurology Department, Centre de Référence de Pathologie Neuromusculaire Paris-Est, Myology Institute, Filière Neuromusculaire, Pitié-Salpêtrière Hospital, Paris, France.,Thérapie des Maladies du Muscle Strié, Institut de Myologie, INSERM UMRS 974, Paris, France
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14
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Wahbi K, Ben Yaou R, Gandjbakhch E, Anselme F, Gossios T, Lakdawala NK, Stalens C, Sacher F, Babuty D, Trochu JN, Moubarak G, Savvatis K, Porcher R, Laforêt P, Fayssoil A, Marijon E, Stojkovic T, Béhin A, Leonard-Louis S, Sole G, Labombarda F, Richard P, Metay C, Quijano-Roy S, Dabaj I, Klug D, Vantyghem MC, Chevalier P, Ambrosi P, Salort E, Sadoul N, Waintraub X, Chikhaoui K, Mabo P, Combes N, Maury P, Sellal JM, Tedrow UB, Kalman JM, Vohra J, Androulakis AFA, Zeppenfeld K, Thompson T, Barnerias C, Bécane HM, Bieth E, Boccara F, Bonnet D, Bouhour F, Boulé S, Brehin AC, Chapon F, Cintas P, Cuisset JM, Davy JM, De Sandre-Giovannoli A, Demurger F, Desguerre I, Dieterich K, Durigneux J, Echaniz-Laguna A, Eschalier R, Ferreiro A, Ferrer X, Francannet C, Fradin M, Gaborit B, Gay A, Hagège A, Isapof A, Jeru I, Juntas Morales R, Lagrue E, Lamblin N, Lascols O, Laugel V, Lazarus A, Leturcq F, Levy N, Magot A, Manel V, Martins R, Mayer M, Mercier S, Meune C, Michaud M, Minot-Myhié MC, Muchir A, Nadaj-Pakleza A, Péréon Y, Petiot P, Petit F, Praline J, Rollin A, Sabouraud P, Sarret C, Schaeffer S, Taithe F, Tard C, Tiffreau V, Toutain A, Vatier C, Walther-Louvier U, Eymard B, Charron P, Vigouroux C, Bonne G, Kumar S, Elliott P, Duboc D. Development and Validation of a New Risk Prediction Score for Life-Threatening Ventricular Tachyarrhythmias in Laminopathies. Circulation 2019; 140:293-302. [PMID: 31155932 DOI: 10.1161/circulationaha.118.039410] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND An accurate estimation of the risk of life-threatening (LT) ventricular tachyarrhythmia (VTA) in patients with LMNA mutations is crucial to select candidates for implantable cardioverter-defibrillator implantation. METHODS We included 839 adult patients with LMNA mutations, including 660 from a French nationwide registry in the development sample, and 179 from other countries, referred to 5 tertiary centers for cardiomyopathies, in the validation sample. LTVTA was defined as (1) sudden cardiac death or (2) implantable cardioverter defibrillator-treated or hemodynamically unstable VTA. The prognostic model was derived using the Fine-Gray regression model. The net reclassification was compared with current clinical practice guidelines. The results are presented as means (SD) or medians [interquartile range]. RESULTS We included 444 patients, 40.6 (14.1) years of age, in the derivation sample and 145 patients, 38.2 (15.0) years, in the validation sample, of whom 86 (19.3%) and 34 (23.4%) experienced LTVTA over 3.6 [1.0-7.2] and 5.1 [2.0-9.3] years of follow-up, respectively. Predictors of LTVTA in the derivation sample were: male sex, nonmissense LMNA mutation, first degree and higher atrioventricular block, nonsustained ventricular tachycardia, and left ventricular ejection fraction (https://lmna-risk-vta.fr). In the derivation sample, C-index (95% CI) of the model was 0.776 (0.711-0.842), and the calibration slope 0.827. In the external validation sample, the C-index was 0.800 (0.642-0.959), and the calibration slope was 1.082 (95% CI, 0.643-1.522). A 5-year estimated risk threshold ≥7% predicted 96.2% of LTVTA and net reclassified 28.8% of patients with LTVTA in comparison with the guidelines-based approach. CONCLUSIONS In comparison with the current standard of care, this risk prediction model for LTVTA in laminopathies significantly facilitated the choice of candidates for implantable cardioverter defibrillators. CLINICAL TRIAL REGISTRATION URL: https://www.clinicaltrials.gov. Unique identifier: NCT03058185.
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Affiliation(s)
- Karim Wahbi
- APHP, Cochin Hospital, Cardiology Department, FILNEMUS, Centre de Référence de Pathologie Neuromusculaire Nord/Est/Ile de France, Paris-Descartes, Sorbonne Paris Cité University (K.W., D.D.).,INSERM Unit 970, Paris Cardiovascular Research Centre (PARCC), France (K.W., C. Stalens, E.J.)
| | - Rabah Ben Yaou
- APHP, Centre de référence de pathologie neuromusculaire Paris-Est, FILNEMUS, Myology Institute, Neurology Department (R.B.Y., A.F., T.S., A.B., S.L.-L., K.C., H.-M.B., B.E.).,Sorbonne Universités, INSERM UMRS 974, CNRS, UMR-7215, Center for Research in Myology, Myology Institute,(R.B.Y., G.B.)
| | - Estelle Gandjbakhch
- APHP, Institute of Cardiology (E.G., X.W., P.C.).,Sorbonne Universités, UPMC Univ Paris 06, INSERM 1166, Institute of Cardiometabolism and Nutrition (ICAN), France (E.G., P.C.).,Centre de Référence des Maladies Cardiaques Héréditaires, Paris, France† (E.G., P.C.)
| | - Frédéric Anselme
- Cardiology Department, University Hospital of Rouen, France (F.A.)
| | - Thomas Gossios
- Inherited Cardiovascular Diseases Unit, University College London & St. Bartholomew's Hospital, United Kingdom† (T.G., K.S., P.E.)
| | - Neal K Lakdawala
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA (N.K.L., U.B.T.).,Aix Marseille University, INSERM, GMGF; Department of Medical Genetics, Childrens' Hospital La Timone, France (A.D.S.-G., N.L.)
| | - Caroline Stalens
- INSERM Unit 970, Paris Cardiovascular Research Centre (PARCC), France (K.W., C. Stalens, E.J.).,Medical Affairs Department, AFM-Telethon, Evry, France (C. Stalens)
| | - Frédéric Sacher
- Centre de reference des maladies rythmiques héréditaires, Bordeaux University Hospital (CHU), IHU Liryc, Electrophysiology and Heart Modeling Institute, fondation Bordeaux Université, Univ. Bordeaux, INSERM U1045, France (F.S.)
| | - Dominique Babuty
- Université François Rabelais, Cardiology Department, CHU Tours, France (D. Babuty)
| | - Jean-Noel Trochu
- INSERM, UMR1087, Université de Nantes, L'Institut du Thorax, CHU de Nantes, CIC, Centre de référence pour la prise en charge des maladies rythmiques héréditaires de Nantes, France† (J.-N.T.)
| | - Ghassan Moubarak
- Department of Electrophysiology and Pacing, InParys Clinical Research Group, Clinique Ambroise Paré, Neuilly-sur-Seine, France (G.M.)
| | - Kostantinos Savvatis
- Inherited Cardiovascular Diseases Unit, University College London & St. Bartholomew's Hospital, United Kingdom† (T.G., K.S., P.E.).,William Harvey Research Institute, Queen Mary University London, United Kingdom (K.S.)
| | - Raphaël Porcher
- APHP, Hôtel-Dieu Hospital, Centre d'Epidémiologie Clinique, INSERM U1153, Université Paris Descartes - Sorbonne Paris Cité, France (R.P.)
| | - Pascal Laforêt
- APHP, Hôpital Raymond Poincaré, Centre de Référence des maladies neuromusculaires Nord-Est-Île de France, Garches (P.L., A.F.)
| | - Abdallah Fayssoil
- APHP, Centre de référence de pathologie neuromusculaire Paris-Est, FILNEMUS, Myology Institute, Neurology Department (R.B.Y., A.F., T.S., A.B., S.L.-L., K.C., H.-M.B., B.E.).,APHP, Hôpital Raymond Poincaré, Centre de Référence des maladies neuromusculaires Nord-Est-Île de France, Garches (P.L., A.F.)
| | - Eloi Marijon
- Hôpital Européen Georges Pompidou, Département de Cardiologie, Unité de Rythmologie, Paris, France (E.M.)
| | - Tanya Stojkovic
- APHP, Centre de référence de pathologie neuromusculaire Paris-Est, FILNEMUS, Myology Institute, Neurology Department (R.B.Y., A.F., T.S., A.B., S.L.-L., K.C., H.-M.B., B.E.)
| | - Anthony Béhin
- APHP, Centre de référence de pathologie neuromusculaire Paris-Est, FILNEMUS, Myology Institute, Neurology Department (R.B.Y., A.F., T.S., A.B., S.L.-L., K.C., H.-M.B., B.E.)
| | - Sarah Leonard-Louis
- APHP, Centre de référence de pathologie neuromusculaire Paris-Est, FILNEMUS, Myology Institute, Neurology Department (R.B.Y., A.F., T.S., A.B., S.L.-L., K.C., H.-M.B., B.E.)
| | - Guilhem Sole
- Centre de référence des maladies neuromusculaires AOC, Hôpital Pellegrin, CHU Bordeaux, France (G.S., X.F.)
| | | | - Pascale Richard
- APHP, UF Cardiogénétique et Myogénétique, Centre de Génétique, GH Pitié Salpêtrière, Paris, France (P.R., C.M.)
| | - Corinne Metay
- APHP, UF Cardiogénétique et Myogénétique, Centre de Génétique, GH Pitié Salpêtrière, Paris, France (P.R., C.M.)
| | - Susana Quijano-Roy
- APHP, Centre de référence des maladies neuromusculaires Nord/Est/Ile de France, Service de Neurologie, Réanimation et Réeducation Pediatriques, Hôpital Raymond Poincaré, Garches, France; UMR 1179 INSERM, Université Versailles Saint-Quentin-en-Yvelines, Montigny-le-Bretonneux (S.Q.-R., I. Dabaj)
| | - Ivana Dabaj
- APHP, Centre de référence des maladies neuromusculaires Nord/Est/Ile de France, Service de Neurologie, Réanimation et Réeducation Pediatriques, Hôpital Raymond Poincaré, Garches, France; UMR 1179 INSERM, Université Versailles Saint-Quentin-en-Yvelines, Montigny-le-Bretonneux (S.Q.-R., I. Dabaj)
| | - Didier Klug
- Cardiologie A, University Hospital, Lille, France (D.K.)
| | - Marie-Christine Vantyghem
- CHU Lille, Endocrinology, Diabetology and Metabolism, Univ Lille, Inserm, UMR 1190 -Translational research in diabetes; EGID European Genomic Institute for Diabetes, France (M.-C.V.)
| | - Philippe Chevalier
- Sorbonne Universités, UPMC Univ Paris 06, INSERM 1166, Institute of Cardiometabolism and Nutrition (ICAN), France (E.G., P.C.).,Centre de Référence des Maladies Cardiaques Héréditaires, Paris, France† (E.G., P.C.).,Service de Cardiologie, Hôpital Est, Lyon, France† (P.C.)
| | - Pierre Ambrosi
- Department of Cardiology, La Timone Hospital, Aix-Marseille Université, France (P.A.)
| | - Emmanuelle Salort
- APHM, Centre de référence des maladies neuromusculaires PACA-Réunion-Rhône Alpes, Hôpital Timone; Aix Marseille Université, Inserm UMR_S 910, GMGF, France (E.S.)
| | - Nicolas Sadoul
- Department of Cardiology, Institut Lorrain du Coeur et des Vaisseaux, CHU Nancy-Brabois, Vandoeuvre les Nancy Cedex, France (N.S.)
| | | | - Khadija Chikhaoui
- APHP, Centre de référence de pathologie neuromusculaire Paris-Est, FILNEMUS, Myology Institute, Neurology Department (R.B.Y., A.F., T.S., A.B., S.L.-L., K.C., H.-M.B., B.E.)
| | - Philippe Mabo
- Univ Rennes, CHU Rennes, Inserm, LTSI - UMR 1099, France (P. Mabo, R.M.)
| | - Nicolas Combes
- Département de Rythmologie, Clinique Pasteur, Toulouse, France (N.C.)
| | - Philippe Maury
- University Hospital Rangueil, Cardiology department; Unité Inserm U1048, Toulouse, France (P. Maury)
| | - Jean-Marc Sellal
- Département de Cardiologie, Centre Hospitalier Universitaire de Nancy; INSERM-IADI U1254, Vandœuvre lès-Nancy, France (J.-M.S.)
| | - Usha B Tedrow
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA (N.K.L., U.B.T.)
| | - Jonathan M Kalman
- Department of Cardiology, Division of Medicine (J.M.K., J.V.), The Royal Melbourne Hospital and University of Melbourne, Victoria, Australia
| | - Jitendra Vohra
- Department of Cardiology, Division of Medicine (J.M.K., J.V.), The Royal Melbourne Hospital and University of Melbourne, Victoria, Australia
| | | | - Katja Zeppenfeld
- Department of Cardiology, Leiden University Medical Centre, the Netherlands (A.G.A.A., K.Z.)
| | - Tina Thompson
- Department of Genetic Medicine (T.T.), The Royal Melbourne Hospital and University of Melbourne, Victoria, Australia
| | - Christine Barnerias
- AP-HP, Centre de référence des maladies neuromusculaires Nord/Est/Ile de France, service de neurologie pédiatrique, Hôpital Necker, GH Necker-Enfants malades, Paris, France (C.B., I. Desguerre).,Centre de référence des maladies neuromusculaires AOC, Département de Neurologie, Hôpital Purpan, CHU Toulouse, France (B.C.)
| | - Henri-Marc Bécane
- APHP, Centre de référence de pathologie neuromusculaire Paris-Est, FILNEMUS, Myology Institute, Neurology Department (R.B.Y., A.F., T.S., A.B., S.L.-L., K.C., H.-M.B., B.E.)
| | - Eric Bieth
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse, France (E.B.)
| | - Franck Boccara
- AP-HP, Hôpitaux de l'Est Parisien, Cardiology Unit, Hôpital Saint-Antoine; Sorbonne Universités, INSERM, UMR_S 938, Paris, France (F.B.).,Hospices Civils de Lyon, Centre de référence des maladies neuromusculaires PACA-Réunion-Rhône Alpes, Service d'ENMG, Hôpital Neurologique Pierre Wertheimer, Lyon-Bron, France (F.B., P.P.)
| | - Damien Bonnet
- AP-HP, Unité Médico-Chirurgicale de Cardiologie Congénitale et Pédiatrique, Centre de référence des Malformations Cardiaques Congénitales Complexes-M3C, Hôpital Necker Enfants Malades, Université Paris Descartes, Sorbonne Paris-Cité, France (D. Bonnet)
| | - Françoise Bouhour
- AP-HP, Hôpitaux de l'Est Parisien, Cardiology Unit, Hôpital Saint-Antoine; Sorbonne Universités, INSERM, UMR_S 938, Paris, France (F.B.)
| | - Stéphane Boulé
- Hôpital privé Le Bois, Service de Cardiologie, Lille, France (S.B.)
| | | | - Françoise Chapon
- Centre de Référence des maladies neuromusculaires Nord/Est/Ile de France, Service de neurologie, CHU Caen; INSERM U1075, Université de Normandie, Caen, France (F.C., S.S.)
| | | | - Jean-Marie Cuisset
- Centre de Référence des maladies neuromusculaires Nord/Est/Ile de France, Service de Neuropédiatrie, Hôpital Roger Salengro, CHRU Lille (J.-M.C.)
| | - Jean-Marc Davy
- Service de Cardiologie, CHU Montpellier, France (J.-M.D.)
| | - Annachiara De Sandre-Giovannoli
- Aix Marseille University, INSERM, GMGF; Department of Medical Genetics, Childrens' Hospital La Timone, France (A.D.S.-G., N.L.)
| | - Florence Demurger
- Centre de Référence Maladies Rares CLAD-Ouest, Service de Génétique Clinique, CHU Rennes, Hôpital Sud, France (F.D., M.F.)
| | - Isabelle Desguerre
- AP-HP, Centre de référence des maladies neuromusculaires Nord/Est/Ile de France, service de neurologie pédiatrique, Hôpital Necker, GH Necker-Enfants malades, Paris, France (C.B., I. Desguerre)
| | - Klaus Dieterich
- Unité de Génétique Clinique, Hôpital Couple Enfant, CHU Grenoble, INSERM U1216, Grenoble Institut des Neurosciences Cellular Myology and Pathologies, France (K.D.)
| | - Julien Durigneux
- Centre de référence des maladies neuromusculaires AOC, Service de Neuropédiatrie, CHU Angers, France (J.D.)
| | | | - Romain Eschalier
- Service de cardiologie, CHU Clermont-Ferrand; CNRS équipe thérapies guidées par l'image, Institut-Pascal, France (R.E.)
| | - Ana Ferreiro
- Basic and Translational Myology Laboratory, UMR8251, Université Paris Diderot/CNRS, France (A.F.)
| | - Xavier Ferrer
- Centre de référence des maladies neuromusculaires AOC, Hôpital Pellegrin, CHU Bordeaux, France (G.S., X.F.)
| | | | - Mélanie Fradin
- Unité de Génétique Clinique, Hôpital Couple Enfant, CHU Grenoble, INSERM U1216, Grenoble Institut des Neurosciences Cellular Myology and Pathologies, France (K.D.)
| | - Bénédicte Gaborit
- APHM, pole ENDO, Hôpital la conception; INSERM, INRA, C2VN, Aix Marseille University, France (B.G.)
| | - Arnaud Gay
- Cardio-Thoracic Surgery Unit and Pathology Department, Rouen University Hospital, France (A.G.)
| | - Albert Hagège
- Department of Cardiology, Assistance Publique-Hôpitaux de Paris and INSERM U970, Hôpital Européen Georges Pompidou, Faculté de Médecine, Université Paris Descartes, Sorbonne Paris Cité, France (A.H.)
| | - Arnaud Isapof
- Centre de Référence des maladies neuromusculaires Nord/Est/Ile de France, Service de neuropédiatrie, Hôpital Trousseau, Paris, France (A.I., M. Mayer)
| | - Isabelle Jeru
- APHP, Department of Genetics (I.J., O.L., C. Vatier, C. Vigouroux), Pitié-Salpêtrière University Hospital, Paris, France.,Sorbonne University, Inserm U938, Saint-Antoine Research Centre, Institute of Cardiometabolism and Nutrition, Paris, France (I.J., O.L., C. Vatier, C. Vigouroux).,APHP, Saint-Antoine University Hospital, Department of Molecular Biology and Genetics, Paris, France (I.J., O.L., C. Vatier, C. Vigouroux)
| | - Raul Juntas Morales
- Centre de référence des maladies neuromusculaires AOC, Department of Neurology, CHU Montpellier, France (R.J.M.)
| | - Emmanuelle Lagrue
- CHRU de Tours, Université François Rabelais de Tours, UMR INSERM U1253, Tours, FILNEMUS, French neuromuscular reference centers, France (E.L.)
| | - Nicolas Lamblin
- Univ. Lille, Inserm U1167, Institut Pasteur; CHRU de Lille, Department of Cardiology, France (N.L.)
| | - Olivier Lascols
- APHP, Department of Genetics (I.J., O.L., C. Vatier, C. Vigouroux), Pitié-Salpêtrière University Hospital, Paris, France.,Sorbonne University, Inserm U938, Saint-Antoine Research Centre, Institute of Cardiometabolism and Nutrition, Paris, France (I.J., O.L., C. Vatier, C. Vigouroux).,APHP, Saint-Antoine University Hospital, Department of Molecular Biology and Genetics, Paris, France (I.J., O.L., C. Vatier, C. Vigouroux)
| | - Vincent Laugel
- Centre de Référence des maladies neuromusculaires Nord/Est/Ile de France, Service de neuropédiatrie, CHU Strasbourg, Hôpital Hautepierre, Hôpitaux Universitaires de Strasbourg, France (V.L.)
| | - Arnaud Lazarus
- InParys Clinical Research Group, Clinique Ambroise Paré, Neuilly sur Seine, France (A.L.)
| | - France Leturcq
- Cardiology Department, University Hospital of Caen, France (F.L.).,Service de Génétique, Hopital Cochin, AP-HP, Paris (F.L.)
| | - Nicolas Levy
- Aix Marseille University, INSERM, GMGF; Department of Medical Genetics, Childrens' Hospital La Timone, France (A.D.S.-G., N.L.)
| | - Armelle Magot
- Centre de Référence des Maladies Neuromusculaires AOC, Laboratoire des Explorations Fonctionnelles, CHU de Nantes, France (A. Magot, Y.P.)
| | | | - Raphaël Martins
- Univ Rennes, CHU Rennes, Inserm, LTSI - UMR 1099, France (P. Mabo, R.M.)
| | - Michèle Mayer
- Centre de Référence des maladies neuromusculaires Nord/Est/Ile de France, Service de neuropédiatrie, Hôpital Trousseau, Paris, France (A.I., M. Mayer)
| | | | - Christophe Meune
- APHP, UF Cardiogénétique et Myogénétique, Centre de Génétique, GH Pitié Salpêtrière, Paris, France (P.R., C.M.)
| | | | | | | | | | - Yann Péréon
- Centre de Référence des Maladies Neuromusculaires AOC, Laboratoire des Explorations Fonctionnelles, CHU de Nantes, France (A. Magot, Y.P.)
| | - Philippe Petiot
- Hospices Civils de Lyon, Centre de référence des maladies neuromusculaires PACA-Réunion-Rhône Alpes, Service d'ENMG, Hôpital Neurologique Pierre Wertheimer, Lyon-Bron, France (F.B., P.P.)
| | | | | | | | | | | | - Stéphane Schaeffer
- Centre de Référence des maladies neuromusculaires Nord/Est/Ile de France, Service de neurologie, CHU Caen; INSERM U1075, Université de Normandie, Caen, France (F.C., S.S.)
| | | | | | | | | | - Camille Vatier
- APHP, Department of Genetics (I.J., O.L., C. Vatier, C. Vigouroux), Pitié-Salpêtrière University Hospital, Paris, France.,Sorbonne University, Inserm U938, Saint-Antoine Research Centre, Institute of Cardiometabolism and Nutrition, Paris, France (I.J., O.L., C. Vatier, C. Vigouroux).,APHP, Saint-Antoine University Hospital, Department of Molecular Biology and Genetics, Paris, France (I.J., O.L., C. Vatier, C. Vigouroux)
| | | | - Bruno Eymard
- APHP, Centre de référence de pathologie neuromusculaire Paris-Est, FILNEMUS, Myology Institute, Neurology Department (R.B.Y., A.F., T.S., A.B., S.L.-L., K.C., H.-M.B., B.E.)
| | | | - Corinne Vigouroux
- APHP, Department of Genetics (I.J., O.L., C. Vatier, C. Vigouroux), Pitié-Salpêtrière University Hospital, Paris, France.,Sorbonne University, Inserm U938, Saint-Antoine Research Centre, Institute of Cardiometabolism and Nutrition, Paris, France (I.J., O.L., C. Vatier, C. Vigouroux).,APHP, Saint-Antoine University Hospital, Department of Molecular Biology and Genetics, Paris, France (I.J., O.L., C. Vatier, C. Vigouroux)
| | - Gisèle Bonne
- Sorbonne Universités, INSERM UMRS 974, CNRS, UMR-7215, Center for Research in Myology, Myology Institute,(R.B.Y., G.B.)
| | | | - Perry Elliott
- Inherited Cardiovascular Diseases Unit, University College London & St. Bartholomew's Hospital, United Kingdom† (T.G., K.S., P.E.)
| | - Denis Duboc
- APHP, Cochin Hospital, Cardiology Department, FILNEMUS, Centre de Référence de Pathologie Neuromusculaire Nord/Est/Ile de France, Paris-Descartes, Sorbonne Paris Cité University (K.W., D.D.)
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Lazarus A, Guy-Moyat B, Mondoly P, Pons F, Quaglia C, Elkaim JP, Bayle S, Victor F. Active periodic electrograms in remote monitoring of pacemaker recipients: the PREMS study. Europace 2019; 21:130-136. [PMID: 29955890 PMCID: PMC6321961 DOI: 10.1093/europace/euy140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 05/29/2018] [Indexed: 11/12/2022] Open
Abstract
Aims Remote monitoring (RM) is considered as a standard of care for pacemaker recipients. Remote monitoring systems provide calendar-based intracardiac electrogram recordings (IEGM) only with the current pacemaker settings (passive IEGM). PREMS (Pacemaker Remote Electrogram Monitoring Study), an observational, multicentre trial, prospectively evaluated the clinical value of an active IEGM (aIEGM), including three 10-s sections (passive IEGM, encouraged sensing, and encouraged pacing), compared to other RM data and to its passive IEGM section. Secondary objectives included the added value of the aIEGM to fully assess the sensing and pacing functions of each lead. Methods and results Patients were enrolled within 3 months after pacemaker implantation and followed until the first transmitted aIEGM, which was analysed together with all other RM data. In total, 567 patients were enrolled (79 ± 9 years, 62% men, 19% single-chamber, and 81% dual-chamber pacemakers). Of 547 aIEGMs transmitted in 547 patients, 161 [29.4%; 95% confidence interval (95% CI) 25.6–33.3%] indicated at least one anomaly non-detectable with certainty—or at all—on other RM data, including atrial arrhythmia, extrasystoles, undersensing, oversensing, and loss of capture. In 21.7% of cases the detected events deserved a corrective action. The sensing and pacing function of each lead could be fully assessed in 77.3% of aIEGM (95% CI 72.6–82.0%) vs. 15.5% (95% CI 11.4–19.6%) when considering only the passive IEGM section (P < 0.001). Conclusion An active IEGM improves the clinical value of remote pacemaker follow-up. Furthermore, compared to a passive IEGM, the aIEGM increases the capability to fully assess remotely the sensing and pacing functions.
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Affiliation(s)
- Arnaud Lazarus
- Rhythmology Unit, Clinique Ambroise Paré, 25-27 boulevard Victor Hugo, Neuilly-Sur-Seine, France
| | - Benoit Guy-Moyat
- Cardiology Unit, Centre Hospitalier Universitaire de Limoges, 2 avenue Martin Luther King, Limoges, France
| | - Pierre Mondoly
- Cardiology Unit, Centre Hospitalier Rangueil, 1 avenue du Pr Jean Poulhès, Toulouse, France
| | - Frédéric Pons
- Cardiology Unit, Hôpital d'Instruction des Armées Saint-Anne, 2 boulevard Sainte-Anne, Toulon, France
| | - Carlo Quaglia
- Cardiology Unit, Centre Hospitalier de Roanne, 28 rue de Charlieu, Roanne, France
| | - Jean-Philippe Elkaim
- Cardiology Unit, Centre Hospitalier de Douarnenez, 85 rue Laennec, Douarnenez, France
| | - Sandrine Bayle
- Cardiology Unit, Centre Hospitalier Louis Pasteur, 4 rue Claude Bernard, Le Coudray, France
| | - Frédéric Victor
- Cardiology Unit, Polyclinique Saint-Laurent, 320 avenue Général George S. Patton, Rennes, France
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Taieb J, Rosier A, Mansourati J, Lazarus A, Cebron J, Fossati F, Guenoun M. Remote monitoring of cardiovascular implantable electronic devices in France. The French Electra survey. Archives of Cardiovascular Diseases Supplements 2019. [DOI: 10.1016/j.acvdsp.2018.10.181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bertails-Descoubes F, Derouet-Jourdan A, Romero V, Lazarus A. Inverse design of an isotropic suspended Kirchhoff rod: theoretical and numerical results on the uniqueness of the natural shape. Proc Math Phys Eng Sci 2018; 474:20170837. [DOI: 10.1098/rspa.2017.0837] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 02/27/2018] [Indexed: 11/12/2022] Open
Abstract
Solving the equations for Kirchhoff elastic rods has been widely explored for decades in mathematics, physics and computer science, with significant applications in the modelling of thin flexible structures such as DNA, hair or climbing plants. As demonstrated in previous experimental and theoretical studies, the natural curvature plays an important role in the equilibrium shape of a Kirchhoff rod, even in the simple case where the rod is isotropic and suspended under gravity. In this paper, we investigate the reverse problem: can we characterize the natural curvature of a suspended isotropic rod, given an equilibrium curve? We prove that although there exists an infinite number of natural curvatures that are compatible with the prescribed equilibrium, they are all equivalent in the sense that they correspond to a unique natural shape for the rod. This natural shape can be computed efficiently by solving in sequence three linear initial value problems, starting from any framing of the input curve. We provide several numerical experiments to illustrate this uniqueness result, and finally discuss its potential impact on non-invasive parameter estimation and inverse design of thin elastic rods.
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Affiliation(s)
| | | | - Victor Romero
- Université Grenoble Alpes, Inria, CNRS, Grenoble INP, LJK, 38000 Grenoble, France
| | - Arnaud Lazarus
- Sorbonne Université, CNRS, UMR 7190, Institut Jean Le Rond d’Alembert, F-75005 Paris, France
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Algarra N, Karagiannopoulos PG, Lazarus A, Vandembroucq D, Kolb E. Bending transition in the penetration of a flexible intruder in a two-dimensional dense granular medium. Phys Rev E 2018; 97:022901. [PMID: 29548164 DOI: 10.1103/physreve.97.022901] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Indexed: 11/07/2022]
Abstract
We study the quasistatic penetration of a flexible beam into a two-dimensional dense granular medium lying on a horizontal plate. Rather than a buckling-like behavior we observe a transition between a regime of crack-like penetration in which the fiber only shows small fluctuations around a stable straight geometry and a bending regime in which the fiber fully bends and advances through series of loading and unloading steps. We show that the shape reconfiguration of the fiber is controlled by a single nondimensional parameter L/L_{c}, which is the ratio of the length of the flexible beam L to L_{c}, a bending elastogranular length scale that depends on the rigidity of the fiber and on the departure from the jamming packing fraction of the granular medium. We show, moreover, that the dynamics of the bending transition in the course of the penetration experiment is gradual and is accompanied by a symmetry breaking of the granular packing fraction in the vicinity of the fiber. Together with the progressive bending of the fiber, a cavity grows downstream of the fiber and the accumulation of grains upstream of the fiber leads to the development of a jammed cluster of grains. We discuss our experimental results in the framework of a simple model of bending-induced compaction and we show that the rate of the bending transition only depends on the control parameter L/L_{c}.
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Affiliation(s)
- Nicolas Algarra
- Laboratoire PMMH, UMR 7636 CNRS/ESPCI Paris/PSL Research University/Sorbonne Universités, UPMC Univ Paris 06,/Univ Paris Diderot, 10 rue Vauquelin, 75231 Paris cedex 05, France
| | - Panagiotis G Karagiannopoulos
- Laboratoire PMMH, UMR 7636 CNRS/ESPCI Paris/PSL Research University/Sorbonne Universités, UPMC Univ Paris 06,/Univ Paris Diderot, 10 rue Vauquelin, 75231 Paris cedex 05, France
| | - Arnaud Lazarus
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005, Paris, France
| | - Damien Vandembroucq
- Laboratoire PMMH, UMR 7636 CNRS/ESPCI Paris/PSL Research University/Sorbonne Universités, UPMC Univ Paris 06,/Univ Paris Diderot, 10 rue Vauquelin, 75231 Paris cedex 05, France
| | - Evelyne Kolb
- Laboratoire PMMH, UMR 7636 CNRS/ESPCI Paris/PSL Research University/Sorbonne Universités, UPMC Univ Paris 06,/Univ Paris Diderot, 10 rue Vauquelin, 75231 Paris cedex 05, France
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Lazarus A, Guy-Moyat B, Mondoly P, Pons F, Quaglia C, Elkaim JP, Bayle S, Victor F. 66Value of active periodic electrograms in remote management of pacemaker recipients: The PREMS study. Europace 2018. [DOI: 10.1093/europace/euy015.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Lazarus
- Clinique Medico-Chirurgicale Ambroise Pare, Neuilly sur Seine, France
| | - B Guy-Moyat
- University Hospital of Limoges, Limoges, France
| | - P Mondoly
- Toulouse Rangueil University Hospital (CHU), Toulouse, France
| | - F Pons
- Sainte Anne military hospital, Toulon, France
| | | | | | - S Bayle
- Hospital Louis Pasteur of Chartres, Chartres, France
| | - F Victor
- Polyclinic Saint Laurent of Rennes, Rennes, France
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20
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Perrin T, Boveda S, Defaye P, Rosier A, Sadoul N, Bordachar P, Klug D, Ritter P, Belhameche M, Babuty D, Mansourati J, Lazarus A, Deharo JC. 1079Role of ICD monitoring in the management of inappropriate ventricular arrhythmia diagnosis: the THORN trial. Europace 2018. [DOI: 10.1093/europace/euy015.583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T Perrin
- Hospital La Timone of Marseille, Cardiology, Marseille, France
| | - S Boveda
- Clinic Pasteur of Toulouse, Cardiology, Toulouse, France
| | - P Defaye
- University Hospital of Grenoble, Cardiology, Grenoble, France
| | - A Rosier
- Institut Hospitalier Jacques Cartier, Massy, France
| | - N Sadoul
- University Hospital of Brabois , Cardiology, Nancy, France
| | - P Bordachar
- Hospital Haut Leveque, Cardiology, Bordeaux-Pessac, France
| | - D Klug
- Lille University Hospital, Cardiology, Lille, France
| | - P Ritter
- Hospital Haut Leveque, Cardiology, Bordeaux-Pessac, France
| | - M Belhameche
- Grand Hôpital de l'Est Francilien, Cardiology, Jossigny, France
| | - D Babuty
- University Hospital Trousseau, Cardiology, Chambray-lès-Tours, France
| | - J Mansourati
- Hospital Cavale Blanche, Cardiology, Brest, France
| | - A Lazarus
- Clinique Medico-Chirurgicale Ambroise Pare, Cardiology, Neuilly sur Seine, France
| | - J C Deharo
- Hospital La Timone of Marseille, Cardiology, Marseille, France
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21
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Chong-Nguyen C, Wahbi K, Algalarrondo V, Bécane HM, Radvanyi-Hoffman H, Arnaud P, Furling D, Lazarus A, Bassez G, Béhin A, Fayssoil A, Laforêt P, Stojkovic T, Eymard B, Duboc D. Association Between Mutation Size and Cardiac Involvement in Myotonic Dystrophy Type 1: An Analysis of the DM1-Heart Registry. ACTA ACUST UNITED AC 2018; 10:CIRCGENETICS.116.001526. [PMID: 28611030 DOI: 10.1161/circgenetics.116.001526] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 03/03/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND In myotonic dystrophy type 1, the association between mutation size (CTG expansion) and the severity of cardiac involvement is controversial. METHODS AND RESULTS We selected 855 patients with myotonic dystrophy type 1 (women, 51%; median age, 37 years), with genetic testing performed at the moment of their initial cardiac evaluation, out of 1014 patients included in the Myotonic Dystrophy Type 1-Heart Registry between January 2000 and December 2015. We studied the association between CTG expansion size and other baseline characteristics and (1) cardiac involvement at baseline and (2) the incidence of death, sudden death, and other cardiac adverse events. At initial presentation, the median CTG expansion size was 530 (interquartile range, 300-830). In multivariate analysis, larger expansions were associated with the presence at baseline of conduction defects on the ECG and left ventricular systolic dysfunction. In a median 11.5 years of follow-up period, 210 patients died (25%), including 32 suddenly (4%). Supraventricular arrhythmias developed over lifetime in 166 patients (19%), sustained ventricular tachyarrhythmias in 17 (2%), and permanent pacemakers were implanted in 181 (21%). In Cox regression analyses, larger CTG expansions were significantly associated with (1) total death, sudden death, and pacemaker implantation in a model, including CTG expansion size, age, sex, diabetes mellitus, and (2) all end points except sudden death in a model including all baseline characteristics. CONCLUSIONS The size of the CTG expansion in the blood of myotonic dystrophy type 1 patients is associated with total and sudden deaths, conduction defects, left ventricular dysfunction, and supraventricular arrhythmias. CLINICAL TRIAL REGISTRATION URL: https://www.clinicaltrials.gov. Unique Identifier: NCT01136330.
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22
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Sochala M, Porcher R, Laforet P, Fayssoil A, Becane H, Lazarus A, Stojkovic T, Behin A, Leonard-Louis S, Arnaud P, Furling D, Bassez G, Eymard B, Duboc D, Wahbi K. Incidence and predictors of venous thromboembolism in inherited myopathies: A higher risk in myotonic dystrophy. Archives of Cardiovascular Diseases Supplements 2018. [DOI: 10.1016/j.acvdsp.2017.11.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Deharo J, Boveda S, Defaye P, Rosier A, Sadoul N, Lazarus A, Bordachar P, Klug D, Ritter P, Belhameche M, Babuty D, Mansourati J. Remote monitoring and inappropriate therapies in ICD patients: The THORN registry. Archives of Cardiovascular Diseases Supplements 2018. [DOI: 10.1016/j.acvdsp.2017.11.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sochala M, Wahbi K, Sorbets E, Lazarus A, Bécane HM, Stojkovic T, Fayssoil A, Laforêt P, Béhin A, Sroussi M, Eymard B, Duboc D, Meune C. Risk for Complications after Pacemaker or Cardioverter Defibrillator Implantations in Patients with Myotonic Dystrophy Type 1. J Neuromuscul Dis 2017; 4:175-181. [DOI: 10.3233/jnd-170232] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Maximilien Sochala
- Department of Cardiology, AP-HP, Cochin Hospital, Paris Descartes University, Paris, France
| | - Karim Wahbi
- Department of Cardiology, AP-HP, Cochin Hospital, Paris Descartes University, Paris, France
- AP-HP, Pitié-Salpêtrière Hospital, Myology Institute, Paris, France
| | - Emmanuel Sorbets
- Department of Cardiology, AP-HP, Avicenne Hospital, Bobigny, France; Paris XIII University, Bobigny, France
| | - Arnaud Lazarus
- InParys Clinical Research Associates, Saint Cloud, Paris, France
| | | | - Tanya Stojkovic
- AP-HP, Pitié-Salpêtrière Hospital, Myology Institute, Paris, France
| | | | - Pascal Laforêt
- AP-HP, Pitié-Salpêtrière Hospital, Myology Institute, Paris, France
- Pierre and Marie Curie University, Paris, France
| | - Anthony Béhin
- AP-HP, Pitié-Salpêtrière Hospital, Myology Institute, Paris, France
| | - Marjorie Sroussi
- Department of Cardiology, AP-HP, Cochin Hospital, Paris Descartes University, Paris, France
| | - Bruno Eymard
- AP-HP, Pitié-Salpêtrière Hospital, Myology Institute, Paris, France
- Pierre and Marie Curie University, Paris, France
| | - Denis Duboc
- Department of Cardiology, AP-HP, Cochin Hospital, Paris Descartes University, Paris, France
- AP-HP, Pitié-Salpêtrière Hospital, Myology Institute, Paris, France
| | - Christophe Meune
- Department of Cardiology, AP-HP, Avicenne Hospital, Bobigny, France; Paris XIII University, Bobigny, France
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Algarra N, Leang M, Lazarus A, Vandembroucq D, Kolb E. Flexible fiber in interaction with a dense granular flow close to the jamming transition. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201714014002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lestringant C, Maurini C, Lazarus A, Audoly B. Buckling of an Elastic Ridge: Competition between Wrinkles and Creases. Phys Rev Lett 2017; 118:165501. [PMID: 28474925 DOI: 10.1103/physrevlett.118.165501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Indexed: 06/07/2023]
Abstract
We investigate the elastic buckling of a triangular prism made of a soft elastomer. A face of the prism is bonded to a stiff slab that imposes an average axial compression. We observe two possible buckling modes which are localized along the free ridge. For ridge angles ϕ below a critical value ϕ^{⋆}≈90°, experiments reveal an extended sinusoidal mode, while for ϕ above ϕ^{⋆}, we observe a series of creases progressively invading the lateral faces starting from the ridge. A numerical linear stability analysis is set up using the finite-element method and correctly predicts the sinusoidal mode for ϕ≤ϕ^{⋆}, as well as the associated critical strain ε_{c}(ϕ). The experimental transition at ϕ^{⋆} is found to occur when this critical strain ε_{c}(ϕ) attains the value ε_{c}(ϕ^{⋆})=0.44 corresponding to the threshold of the subcritical surface creasing instability. Previous analyses have focused on elastic crease patterns appearing on planar surfaces, where the role of scale invariance has been emphasized; our analysis of the elastic ridge provides a different perspective, and reveals that scale invariance is not a sufficient condition for localization.
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Affiliation(s)
- C Lestringant
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7190, Institut d'Alembert, F-75005 Paris, France
| | - C Maurini
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7190, Institut d'Alembert, F-75005 Paris, France
| | - A Lazarus
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7190, Institut d'Alembert, F-75005 Paris, France
| | - B Audoly
- Laboratoire de Mécanique des Solides, CNRS, UMR 7649, Département de Mécanique, École Polytechnique, 91128 Palaiseau Cedex, France
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Ploux S, Varma N, Strik M, Lazarus A, Bordachar P. Optimizing Implantable Cardioverter-Defibrillator Remote Monitoring: A Practical Guide. JACC Clin Electrophysiol 2017; 3:315-328. [PMID: 29759443 DOI: 10.1016/j.jacep.2017.02.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 02/13/2017] [Accepted: 02/15/2017] [Indexed: 01/22/2023]
Abstract
Remote monitoring (RM) receives a Class I: Level of Evidence: A recommendation for the follow-up of patients with implantable cardioverter-defibrillators, positioning the technology as standard of care. RM is often seen and sold as a plug-and-play technology, whereas fundamental differences exist in the philosophy and conception of the 5 main RM systems. The capabilities and limitations of the different RM systems need to be understood and taken into account when the decision is made to remotely manage an individual patient. The purpose of this review is to provide to the cardiologist practical information about RM systems' specificities with respect to the different technical and clinical alerts. Clinically based indications and programming suggestions are provided.
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Affiliation(s)
- Sylvain Ploux
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Fondation Bordeaux Université, Pessac, Bordeaux, France; Bordeaux University Hospital (CHU), Cardio-Thoracic Unit, Pessac, Bordeaux, France.
| | - Niraj Varma
- Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio
| | - Marc Strik
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Fondation Bordeaux Université, Pessac, Bordeaux, France; Bordeaux University Hospital (CHU), Cardio-Thoracic Unit, Pessac, Bordeaux, France; Physiology and Cardiology Department, Maastricht University Medical Center, Cardiovascular Research Institute Maastricht, Maastricht, the Netherlands
| | - Arnaud Lazarus
- InParys, A. Paré Private Hospital, Neuilly sur Seine, France
| | - Pierre Bordachar
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Fondation Bordeaux Université, Pessac, Bordeaux, France; Bordeaux University Hospital (CHU), Cardio-Thoracic Unit, Pessac, Bordeaux, France
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Amara W, Montagnier C, Cheggour S, Boursier M, Gully C, Barnay C, Georger F, Deplagne A, Fromentin S, Mlotek M, Lazarus A, Taïeb J. Early Detection and Treatment of Atrial Arrhythmias Alleviates the Arrhythmic Burden in Paced Patients: The SETAM Study. Pacing Clin Electrophysiol 2017; 40:527-536. [PMID: 28244117 DOI: 10.1111/pace.13062] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/01/2017] [Accepted: 02/03/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Remote monitoring (RM) can remotely detect atrial tachyarrhythmias (ATAs). The benefit of RM compared to conventional follow-up in the detection and management of ATA was assessed in recipients of dual-chamber pacemakers. METHODS The multicenter randomized SETAM study enrolled 595 patients in sinus rhythm with a CHA2 DS2 -VASc score ≥2, without ATA history and untreated with antiarrhythmics and antithrombotics, randomly assigned to RM (RM-ON; n = 291) versus ambulatory follow-up (RM-OFF; n = 304) during 12.8 ± 3.3 months. ATA occurrence, burden, and management were analyzed together with adverse clinical events. RESULTS Patients were 79 ± 8 years old, 63% men, with a CHA2 DS2 -VASc score of 3.7± 1.2. ATA were detected in 83 patients (28%) in the RM-ON versus 66 (22%) in the RM-OFF group (P = 0.06). The median time between the pacemaker implantation and the first treated ATA was 114 days [44; 241] in the RM-ON versus 224 days [67; 366] in the RM-OFF group (hazard ratio [HR] = 0.56; 95% confidence interval [CI]: 0.37-0.86; P = 0.01). Therapies for ATA were initiated in 92 patients and the time to treatment of ATA was shortened by 44% in the RM-ON group (HR = 0.565; 95% CI: 0.37-0.86; P = 0.01). Over the last 4 months of follow-up, the mean ATA burden was alleviated by 4 hours/day (18%) in the RM-ON group. The rate of adverse clinical events was similar in both groups. CONCLUSION Remotely monitored patients were diagnosed and treated earlier for ATA, and subsequently had a lower ATA burden.
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Affiliation(s)
- Walid Amara
- Centre Hospitalier Intercommunal Le Raincy-Montfermeil, Le Raincy-Montfermeil, France
| | | | | | - Michel Boursier
- Centre Hospitalier Regional Metz-Thionville, Hôpital de Mercy, Ars-Laquenexy, France
| | - Claude Gully
- Centre Hospitalier Departemental Les Oudairies, La Roche-sur-Yon, France
| | - Claude Barnay
- Centre Hospitalier du pays Aix, Aix-en-Provence, France
| | | | | | | | - Marcin Mlotek
- Centre de Cardiologie Dorian-Liberation, Hôpital Prive de La Loire, Saint Etienne, France
| | | | - Jerôme Taïeb
- Centre Hospitalier du pays Aix, Aix-en-Provence, France
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Wahbi K, Babuty D, Probst V, Wissocque L, Labombarda F, Porcher R, Bécane HM, Lazarus A, Béhin A, Laforêt P, Stojkovic T, Clementy N, Dussauge AP, Gourraud JB, Pereon Y, Lacour A, Chapon F, Milliez P, Klug D, Eymard B, Duboc D. Incidence and predictors of sudden death, major conduction defects and sustained ventricular tachyarrhythmias in 1388 patients with myotonic dystrophy type 1. Eur Heart J 2017; 38:751-758. [PMID: 27941019 DOI: 10.1093/eurheartj/ehw569] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 11/03/2016] [Indexed: 08/27/2023] Open
Abstract
AIMS To describe the incidence and identify predictors of sudden death (SD), major conduction defects and sustained ventricular tachyarrhythmias (VTA) in myotonic dystrophy type 1 (DM1). METHODS AND RESULTS We retrospectively enrolled 1388 adults with DM1 referred to six French medical centres between January 2000 and October 2013. We confirmed their vital status, classified all deaths, and determined the incidence of major conduction defects requiring permanent pacing and sustained VTA. We searched for predictors of overall survival, SD, major conduction defects, and sustained VTA by Cox regression analysis. Over a median 10-year follow-up, 253 (18.2%) patients died, 39 (3.6%) suddenly. Analysis of the cardiac rhythm at the time of the 39 SD revealed sustained VTA in 9, asystole in 5, complete atrioventricular block in 1 and electromechanical dissociation in two patients. Non-cardiac causes were identified in the five patients with SD who underwent autopsies. Major conduction defects developed in 143 (19.3%) and sustained VTA in 26 (2.3%) patients. By Cox regression analysis, age, family history of SD and left bundle branch block were independent predictors of SD, while age, male sex, electrocardiographic conduction abnormalities, syncope, and atrial fibrillation were independent predictors of major conduction defects; non-sustained VTA was the only predictor of sustained VTA. CONCLUSIONS SD was a frequent mode of death in DM1, with multiple mechanisms involved. Major conduction defects were by far more frequent than sustained VTA, whose only independent predictor was a personal history of non-sustained VTA. ClinicalTrials.gov no: NCT01136330.
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Affiliation(s)
- Karim Wahbi
- APHP, Cochin Hospital, Cardiology Department, Paris-Descartes, Sorbonne Paris Cité University, Paris, France
- APHP, Centre de Référence de pathologie neuromusculaire Paris-Est, Myology Institute, Neurology Department, Pitié-Salpêtrière Hospital, Paris, France
- Inserm, UMRS 974, Paris, France
| | - Dominique Babuty
- Cardiology Department, Université François Rabelais, CHU Tours, France
| | - Vincent Probst
- INSERM, UMR1087, Université de Nantes, L'Institut du Thorax, CHU de Nantes, CIC, Centre de référence pour la prise en charge des maladies rythmiques héréditaires de Nantes, Nantes, France
| | | | | | - Raphaël Porcher
- INSERM U1153, 1 Place du Parvis Notre Dame, 75004 Paris, France; Université Paris Descartes - Sorbonne Paris Cité, Paris, France; Centre d'Epidémiologie Clinique, Hôpital Hôtel-Dieu, APHP, Paris, France
| | - Henri Marc Bécane
- APHP, Centre de Référence de pathologie neuromusculaire Paris-Est, Myology Institute, Neurology Department, Pitié-Salpêtrière Hospital, Paris, France
| | | | - Anthony Béhin
- APHP, Centre de Référence de pathologie neuromusculaire Paris-Est, Myology Institute, Neurology Department, Pitié-Salpêtrière Hospital, Paris, France
| | - Pascal Laforêt
- APHP, Centre de Référence de pathologie neuromusculaire Paris-Est, Myology Institute, Neurology Department, Pitié-Salpêtrière Hospital, Paris, France
- Pierre et Marie Curie-Paris 6 University, Paris, France
| | - Tanya Stojkovic
- APHP, Centre de Référence de pathologie neuromusculaire Paris-Est, Myology Institute, Neurology Department, Pitié-Salpêtrière Hospital, Paris, France
| | - Nicolas Clementy
- Cardiology Department, Université François Rabelais, CHU Tours, France
| | - Aurélie Pattier Dussauge
- INSERM, UMR1087, Université de Nantes, L'Institut du Thorax, CHU de Nantes, CIC, Centre de référence pour la prise en charge des maladies rythmiques héréditaires de Nantes, Nantes, France
- Laboratoire d'Explorations Fonctionnelles, CHU de Nantes, Nantes, France
| | - Jean Baptiste Gourraud
- INSERM, UMR1087, Université de Nantes, L'Institut du Thorax, CHU de Nantes, CIC, Centre de référence pour la prise en charge des maladies rythmiques héréditaires de Nantes, Nantes, France
| | - Yann Pereon
- Centre de Référence des Maladies Neuromusculaires Rares de l'Enfant et de l'Adulte Nantes-Angers, CHU de Nantes, Nantes, France
| | - Arnaud Lacour
- Clinique neurologique et centre de référence des maladies rares neuromusculaires, hôpital Roger-Salengro, CHRU de Lille, rue Emile-Laine, Lille, France
| | - Françoise Chapon
- Centre de compétences des pathologies neuromusculaires, CHU de Caen, Caen, France
| | | | - Didier Klug
- Cardiologie A, University Hospital, Lille, France
| | - Bruno Eymard
- APHP, Centre de Référence de pathologie neuromusculaire Paris-Est, Myology Institute, Neurology Department, Pitié-Salpêtrière Hospital, Paris, France
- Pierre et Marie Curie-Paris 6 University, Paris, France
| | - Denis Duboc
- APHP, Cochin Hospital, Cardiology Department, Paris-Descartes, Sorbonne Paris Cité University, Paris, France
- APHP, Centre de Référence de pathologie neuromusculaire Paris-Est, Myology Institute, Neurology Department, Pitié-Salpêtrière Hospital, Paris, France
- Inserm, UMRS 974, Paris, France
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Taieb J, Genoun M, Mansourati J, Cebron J, Fossati F, Lazarus A. Routine pacemaker primoimplantation procedures in France: the French Electra survey. Archives of Cardiovascular Diseases Supplements 2017. [DOI: 10.1016/s1878-6480(17)30243-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chong-Nguyen C, Wahbi K, Algalarrondo V, Bécane H, Radvanyi-Hoffman H, Arnaud P, Furling D, Bassez G, Lazarus A, Laforet P, Stojkovic T, Behin A, Fayssoil A, Eymard B, Duboc D. Association between mutation size and cardiac involvement in myotonic dystrophy type 1: when size matters. Archives of Cardiovascular Diseases Supplements 2017. [DOI: 10.1016/s1878-6480(17)30118-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Fayssoil A, Lazarus A, Wahbi K, Ogna A, Nardi O, Lofaso F, Clair B, Orlikowski D, Annane D. Cardiac implantable electronic devices in tracheotomized muscular dystrophy patients: Safety and risks. Int J Cardiol 2016; 222:975-977. [PMID: 27526372 DOI: 10.1016/j.ijcard.2016.08.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 08/03/2016] [Indexed: 01/16/2023]
Abstract
BACKGROUND/OBJECTIVES Muscular dystrophies are genetic muscle disorders, in which heart involvement and chronic respiratory impairment affect survival. Cardiac conduction disturbances require implantable cardiac pacemaker. Implantable defibrillators may also be necessary to prevent cardiac sudden death. The safety and risk of cardiac electronic devices' implantation are not known in patients with muscular dystrophy. We aimed to assess the risks related to cardiac implantable electronic devices (CIED) in muscular dystrophy patients ventilated by tracheostomy. METHODS We reviewed all medical charts of neuromuscular patients and identified all CIED implantations of pacemakers (PM) or defibrillators (ICD) in patients ventilated using tracheostomy. RESULTS Twelve device implantations were included, performed in 9 patients (5 DMD, 1 Becker muscular dystrophy and 3 DM1). Mean age was 39.9years±13.0. All patients were wheel-chair bound and tracheotomized. Six pacemakers (PM) and 6 cardiac resynchronization (CRT) devices, including 2 defibrillators (CRT-D) were implanted. Following device implantation, two patients had a pneumothorax and one died from severe heart failure after an unsuccessful CRT implant attempt. Follow-up lasted up to 8years (mean 2.6±2.9years), during which one patient presented a PM pocket infection, requiring PM explantation and epicardial reimplantation. CONCLUSION We found a high prevalence of early complications (16.6% pneumothorax) after CIED implantation and an acceptable long-term infectious risk (8.3%). These results highlight the feasibility of CIED implantation in tracheotomized patients with muscular dystrophies and the need for a particular caution in the management of these patients during invasive procedures. ClinicalTrials.gov (identifier: NCT02501083).
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Affiliation(s)
- Abdallah Fayssoil
- Intensive Care Unit, GNHM Neuromuscular Center, Raymond Poincare Hospital, Garches, France; Clinical Investigation Center CIC 14.29, INSERM, Garches, France.
| | - Arnaud Lazarus
- Rhythmology Unit, Clinique Ambroise Paré, Neuilly sur Seine, France; Cardiology Unit, Cochin University Hospital, Paris, France
| | - Karim Wahbi
- Cardiology Unit, Cochin University Hospital, Paris, France
| | - Adam Ogna
- Intensive Care Unit, GNHM Neuromuscular Center, Raymond Poincare Hospital, Garches, France
| | - Olivier Nardi
- Intensive Care Unit, GNHM Neuromuscular Center, Raymond Poincare Hospital, Garches, France
| | - Frederic Lofaso
- Physiology Department, Raymond Poincare Hospital, Garches, France
| | - Bernard Clair
- Intensive Care Unit, GNHM Neuromuscular Center, Raymond Poincare Hospital, Garches, France
| | - David Orlikowski
- Intensive Care Unit, GNHM Neuromuscular Center, Raymond Poincare Hospital, Garches, France; Clinical Investigation Center CIC 14.29, INSERM, Garches, France
| | - Djillali Annane
- Intensive Care Unit, GNHM Neuromuscular Center, Raymond Poincare Hospital, Garches, France
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Taieb J, Georger F, Fossati F, Mansourati J, Lazarus A, Cebron JP, Guenoun M. 56-13: Anesthesia in ablation procedures: differences between public and private centers. The French Electra Survey. Europace 2016. [DOI: 10.1093/europace/18.suppl_1.i35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Bagate F, Lazarus A, Fontaine H, Pecriaux C, Sogni P, Pol S, Duboc D. 0428: Cardiac arrhythmia after initiation of sofosbuvir-including regimen in patients with chronic hepatitis C virus infection. Archives of Cardiovascular Diseases Supplements 2016. [DOI: 10.1016/s1878-6480(16)30218-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Stockburger M, Defaye P, Boveda S, Stancak B, Lazarus A, Sipötz J, Nardi S, Rolando M, Moreno J. Safety and efficiency of ventricular pacing prevention with an AAI-DDD changeover mode in patients with sinus node disease or atrioventricular block: impact on battery longevity-a sub-study of the ANSWER trial. Europace 2015; 18:739-46. [PMID: 26612882 PMCID: PMC5841592 DOI: 10.1093/europace/euv358] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 09/29/2015] [Indexed: 11/13/2022] Open
Abstract
Aims This ANSWER (EvaluAtioN of the SafeR mode in patients With a dual chambER pacemaker indication) sub-study assesses safety and effectiveness of SafeR™ and the impact of ventricular pacing (VP) prevention on anticipated device longevity and replacement rate. Methods and results Patients implanted for atrioventricular block (AVB, n = 310) or sinus node dysfunction (SND, n = 336) were randomly assigned to SafeR (n = 314) or DDD (n = 318) and followed for 36 months. Safety, median VP, estimated device longevity (mean difference, 95% confidence interval [CI]), and anticipated replacement rates were analysed by pacing mode and implant indication. No difference in mortality, syncope, or mode intolerance was observed between randomization groups regardless of the indication. Ventricular pacing on SafeR vs. DDD was 11.5 vs. 93.6% in the overall population (P < 0.001), 89.2 vs. 83.8% in permanent AVB (P = 0.944), 53.5 vs. 98.2% in intermittent AVB (P < 0.001), and 2.2 vs. 84.7% in SND (P < 0.001). Anticipated median device longevity increased on SafeR by 14 [Q1 10; Q3 17] months [10; 17] (P < 0.001) in the overall population, 9 months [−5; 22] (P = 0.193) in permanent AVB, 14 months [8; 19] (P < 0.001) in intermittent AVB, and 14 months [9; 19] (P < 0.001) in SND. In intermittent AVB and SND, prolonged estimated battery longevity translated into the prevention of one anticipated replacement in at least 23% of patients. Conclusion SafeR was effective in reducing VP in intermittent AVB and in SND. No effect was observed in permanent AVB. No safety issue was observed. Ventricular pacing reduction by SafeR translated into relevant estimated prolongation of device longevity and anticipated reduction of required replacements.
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Affiliation(s)
- Martin Stockburger
- Department of Cardiology and Angiology, Charité University Hospital, Berlin, Germany Department of Cardiology, Havelland Kliniken Nauen, Ketziner Strasse 21, 14641 Nauen, Germany
| | - Pascal Defaye
- Arrhythmia Unit, Cardiology Department, University Hospital, Grenoble, France
| | - Serge Boveda
- Arrhythmia Unit, Clinique Pasteur, Toulouse, France
| | - Branislav Stancak
- Arrhythmia Department, Hospital of Eastern Slovakia, Institute of Cardiovascular Diseases, Kosice, Slovakia
| | - Arnaud Lazarus
- InParys, A. Paré Private Hospital, Neuilly sur Seine, France
| | | | | | - Mara Rolando
- Sorin Group International SA, Lausanne, Switzerland
| | - Javier Moreno
- Arrhythmia Department, Cardiovascular Institute, San Carlos University Hospital, Madrid, Spain Arrhythmia Department, Hospital Ramón y Cajal, Madrid, Spain
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Fontaine H, Lazarus A, Pol S, Pecriaux C, Bagate F, Sultanik P, Boueyre E, Corouge M, Mallet V, Vallet-Pichard A, Sogni P, Duboc D. Bradyarrhythmias Associated with Sofosbuvir Treatment. N Engl J Med 2015. [PMID: 26535533 DOI: 10.1056/nejmc1505967#sa1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Savouré A, Mechulan A, Burban M, Olivier A, Lazarus A. The Kora Pacemaker is Safe and Effective for Magnetic Resonance Imaging. Clin Med Insights Cardiol 2015; 9:85-90. [PMID: 26327785 PMCID: PMC4536771 DOI: 10.4137/cmc.s24976] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 04/20/2015] [Accepted: 04/28/2015] [Indexed: 11/05/2022]
Abstract
BACKGROUND The impact of magnetic resonance imaging (MRI) on pacemakers is potentially hazardous. We present clinical results from a novel MRI conditional pacing system with the capability to switch automatically to asynchronous mode in the presence of a strong magnetic field. AIMS The IKONE (Assessment of the MRI solution: KORA 100™ and Beflex™ pacing leads system) study is an open-label, prospective, multicenter study aimed at confirming the safety and effectiveness of the system, when used in patients undergoing MRI of anatomical regions excluding the chest. METHODS Primary eligibility criteria included patients implanted with the system, with or without a clinically indicated MRI. The primary endpoint was to confirm no significant change in pacing capture thresholds at 1 month after an MRI, with an absolute difference of ≤0.75 V between the pre- and 1-month post-MRI for both atrial and ventricular capture thresholds. RESULTS Out of 33 patients enrolled (mean age: 72.8 ± 11.4 years, 70% male, implant indication or device), 29 patients implanted with the MRI conditional system underwent an MRI 6-8 week postimplant. The study reached its primary endpoint: the mean absolute difference in pacing capture threshold at 1-month post-MRI versus pre-MRI was less than 0.75 V in the atrium (Δ = 0.18 ± 0.16 V, P-value < 0.001) and in the ventricle (Δ = 0.18 ± 0.22 V, P-value < 0.001). There were no adverse events related to the MRI procedure nor were there reports of patient symptoms or discomfort associated. MR image quality was of diagnostic quality in all patients. CONCLUSION Lead electrical performance as measured by difference in capture thresholds were not impacted by MRI. This first clinical evaluation of a novel MRI conditional system demonstrates it is safe and effective for use in out-of-chest, 1.5-T MR imaging.
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Affiliation(s)
| | | | - Marc Burban
- Nouvelles Cliniques Nantaises, Nantes, France
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Boveda S, Defaye P, Moreno J, Stancak B, Villacastin J, Lazarus A, Sipoetz J, Seara Garcia J, Rousseau A, Stockburger M. 0184: Clinical benefit of the safer mode in a mixed dual chamber population: results from the ANSWER study. Archives of Cardiovascular Diseases Supplements 2015. [DOI: 10.1016/s1878-6480(15)71560-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Taieb J, Guenoun M, Lazarus A, Mansourati J, Fossati F, Pierre Cebron J. 0131: Strategy of anticoagulation in pacemaker and ICD replacement procedure in real life. The French Electra survey. Archives of Cardiovascular Diseases Supplements 2015. [DOI: 10.1016/s1878-6480(15)71684-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
We investigate how natural curvature affects the configuration of a thin elastic rod suspended under its own weight, as when a single strand of hair hangs under gravity. We combine precision desktop experiments, numerics, and theoretical analysis to explore the equilibrium shapes set by the coupled effects of elasticity, natural curvature, nonlinear geometry, and gravity. A phase diagram is constructed in terms of the control parameters of the system, namely the dimensionless curvature and weight, where we identify three distinct regions: planar curls, localized helices, and global helices. We analyze the stability of planar configurations, and describe the localization of helical patterns for long rods, near their free end. The observed shapes and their associated phase boundaries are then rationalized based on the underlying physical ingredients.
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Affiliation(s)
- J T Miller
- Department of Civil & Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Lazarus
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - B Audoly
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7190 Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - P M Reis
- Department of Civil & Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Sadoul N, Defaye P, Mouton E, Bizeau O, Dupuis JM, Blangy H, Delarche N, Blanc JJ, Lazarus A. Defibrillation testing in everyday medical practice during implantable cardioverter defibrillator implantation in France: Analysis from the LEADER registry. Arch Cardiovasc Dis 2013; 106:562-9. [DOI: 10.1016/j.acvd.2013.07.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 07/01/2013] [Accepted: 07/16/2013] [Indexed: 11/15/2022]
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Abstract
We present results from an experimental investigation of the indentation of nonspherical pressurized elastic shells with a positive Gauss curvature. A predictive framework is proposed that rationalizes the dependence of the local rigidity of an indented shell on the curvature in the neighborhood of the locus of indentation, the in-out pressure differential, and the material properties. In our approach, we combine classic theory for spherical shells with recent analytical developments for the pressurized case, and proceed, for the most part, by analogy, guided by our own experiments. By way of example, our results elucidate why an eggshell is significantly stiffer when compressed along its major axis, as compared to doing so along its minor axis. The prominence of geometry in this class of problems points to the relevance and applicability of our findings over a wide range of length scales.
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Affiliation(s)
- A Lazarus
- Elasticity, Geometry and Statistics Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Wahbi K, Meune C, Porcher R, Bécane H, Lazarus A, Laforet P, Stojkovic T, Béhin A, Radvanyi-Hoffman H, Eymard B, Duboc D. S.P.27 Electrophysiological study with prophylactic pacing and survival in adults with myotonic dystrophy and conduction system disease. Neuromuscul Disord 2012. [DOI: 10.1016/j.nmd.2012.06.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Wahbi K, Meune C, Porcher R, Bécane HM, Lazarus A, Laforêt P, Stojkovic T, Béhin A, Radvanyi-Hoffmann H, Eymard B, Duboc D. Electrophysiological study with prophylactic pacing and survival in adults with myotonic dystrophy and conduction system disease. JAMA 2012; 307:1292-301. [PMID: 22453570 DOI: 10.1001/jama.2012.346] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
CONTEXT Up to one-third of patients with myotonic dystrophy type 1 die suddenly. Thus far, no intervention has effectively prevented sudden death. OBJECTIVE To determine whether an invasive strategy based on systematic electrophysiological studies and prophylactic permanent pacing is associated with longer survival in patients presenting with myotonic dystrophy type 1 and major infranodal conduction delays than a noninvasive strategy. DESIGN, SETTING, AND PATIENTS A retrospective study, the DM1 Heart Registry included 914 consecutive patients older than 18 years with genetically confirmed myotonic dystrophy type 1 who were admitted to the Neurological Unit of the Myology Institute of Pitié-Salpêtrière Hospital, a teaching medical center in Paris, France, between January 2000 and December 2009. INTERVENTIONS Among 486 patients whose electrocardiogram showed a PR interval greater than 200 milliseconds, a QRS duration greater than 100 milliseconds, or both, the outcome of 341 (70.2%) who underwent an invasive strategy was compared with 145 (29.8%) who underwent a noninvasive strategy. A propensity score risk adjustment and propensity-based matching analysis was used to account for selection biases. MAIN OUTCOME MEASURES Rates of overall survival (main outcome measure) and sudden death, respiratory death, and other deaths (secondary outcome measures). RESULTS Over a median follow-up of 7.4 years (range, 0-9.9 years), 50 patients died in the invasive strategy group and 30 died in the noninvasive strategy group (hazard ratio [HR], 0.74 [95 CI, 0.47-1.16]; P = .19), corresponding to an overall 9-year survival of 74.4% (95% CI, 69.2%-79.9%). Regardless of the technique used to adjust for between-group differences in baseline characteristics, the invasive strategy was associated with a longer survival, with adjusted HRs ranging from 0.47 (95% CI, 0.26-0.84; P = .01) for a covariate-adjusted analysis of propensity-matched data to 0.61 (95% CI, 0.38-0.99; P = .047) for an analysis adjusted for propensity score quintiles. The survival difference was largely attributable to a lower incidence of sudden death, which occurred in 10 patients in the invasive strategy group and in 16 patients in the noninvasive strategy group, with HRs ranging from 0.24 (95% CI, 0.10-0.56; P = .001) for an analysis adjusted for propensity score quintiles and covariates to 0.28 (95% CI, 0.13-0.61; P = .001) for an unadjusted analysis of propensity-matched data. CONCLUSION Among patients with myotonic dystrophy type 1, an invasive strategy was associated with a higher rate of 9-year survival than a noninvasive strategy. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT01136330.
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Affiliation(s)
- Karim Wahbi
- Pierre et Marie Curie-Paris 6 University, Myology Institute, Pitié-Salpêtrière Hospital, 75013 Paris, France.
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Lazarus A, Biondi N, Thebaut JF, Durand-Zaleski I, Chauvin M. Implantable cardioverter-defibrillators in France: practices and regional variability. Europace 2011; 13:1568-73. [DOI: 10.1093/europace/eur238] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Guillon S, Saya D, Mazenq L, Perisanu S, Vincent P, Lazarus A, Thomas O, Nicu L. Effect of non-ideal clamping shape on the resonance frequencies of silicon nanocantilevers. Nanotechnology 2011; 22:245501. [PMID: 21508453 DOI: 10.1088/0957-4484/22/24/245501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this paper, we investigate the effects of non-ideal clamping shapes on the dynamic behavior of silicon nanocantilevers. We fabricated silicon nanocantilevers using silicon on insulator (SOI) wafers by employing stepper ultraviolet (UV) lithography, which permits a resolution of under 100 nm. The nanocantilevers were driven by electrostatic force inside a scanning electron microscope (SEM). Both lateral and out-of-plane resonance frequencies were visually detected with the SEM. Next, we discuss overhanging of the cantilever support and curvature at the clamping point in the silicon nanocantilevers, which generally arises in the fabrication process. We found that the fundamental out-of-plane frequency of a realistically clamped cantilever is always lower than that for a perfectly clamped cantilever, and depends on the cantilever width and the geometry of the clamping point structure. Using simulation with the finite-elements method, we demonstrate that this discrepancy is attributed to the particular geometry of the clamping point (non-zero joining curvatures and a flexible overhanging) that is obtained in the fabrication process. The influence of the material orthotropy is also investigated and is shown to be negligible.
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Vatasescu RG, Yusu S, Ikeda T, Mera H, Miwa Y, Abe A, Miyakoshi M, Tsukada T, Yoshino H, Nayar V, Cantelon P, Rawling A, Belham MRD, Pugh PJ, Osca Asensi J, Sanchez JM, Cano O, Tejada D, Munoz B, Rodriguez M, Sancho-Tello MJ, Olague J, Wecke L, Van Hunnik A, Thompson T, Di Carlo L, Zdeblick M, Auricchio A, Prinzen F, Doltra Magarolas A, Bijnens B, Silva E, Penela D, Mont L, Tolosana JM, Brugada J, Sitges M, Ofman P, Navaravong L, Leng J, Peralta A, Hoffmeister P, Levine R, Cook J, Stoenescu M, Tettamanti ME, Revilla Orodea A, Lopez Diaz J, De La Fuente Galan L, Arnold R, Garcia Moran E, San Roman Calvar JA, Gomez Salvador I, Nakamura K, Takami M, Keida T, Mesato A, Higa S, Shimabukuro M, Masuzaki H, Proietti R, Sagone A, Domenichini G, Burri H, Valzania C, Biffi M, Sunthorn H, Gavaruzzi G, Foulkes H, Boriani G, Koh S, Hou W, Rosenberg S, Snell J, Poore J, Dalal N, Bornzin G, Kloppe A, Mijic D, Bogossian H, Ninios I, Zarse M, Lemke B, Guedon-Moreau L, Kouakam C, Klug D, Marquie C, Ziglio F, Kacet S, Mohamed Fereig Hamed H, Hamdy AMAL, Abd El Aziz AHMED, Nabih MRVAT, Hamdy REHAB, Yaminisaharif A, Davoudi GH, Kasemisaeid A, Sadeghian S, Vasheghani Farahani A, Yazdanifard P, Shafiee A, Alonso C, Grimard C, Jauvert G, Lazarus A, Fernandez-Armenta J, Berruezo A, Mont LL, Sitges M, Andreu D, Ortiz-Perez J, Caralt T, Brugada J, Escudero J, Perez F, Griffith KM, Ferreyra R, Urena P, Demas M, Muratore C, Mazzetti H, Guardado J, Sanfins V, Fernandes M, Pereira VH, Canario-Almeida F, Ferreira F, Rodrigues B, Almeida J, Sokal A, Jedrzejczyk E, Lenarczyk R, Pluta S, Kowalski O, Pruszkowska P, Swiatkowski A, Kalarus Z, Heinke M, Ismer B, Kuehnert H, Heinke T, Surber R, Osypka N, Prochnau D, Figulla HR, Iacopino S, Landolina M, Proclemer A, Padeletti L, Calvi V, Pierantozzi A, Di Stefano P, Boriani G, Bauer A, Bode F, Le Gal F, Deharo JC, Delay M, Nitzsche R, Clementy J, Kawamura M, Munetsugu Y, Tanno K, Kobayashi Y, Cannom D, Hosoda J, Ishikawa T, Andoh K, Nobuyoshi M, Fujii 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P, Gaspar T, Rolf S, Arya A, Piorkowski C, Hindricks G, Valles Gras E, Bazan V, Portillo L, Suarez F, Bruguera J, Marti J, Huo Y, Arya A, Richter S, Schoenbauer R, Sommer P, Hindricks G, Piorkowski C, Rivas N, Casaldaliga J, Roca I, Dos L, Perez-Rodon J, Pijuan A, Garcia-Dorado D, Moya A, Carter HB, Garg A, Hegrenes J, Sih HJ, Teplitsky LR, Kuroki K, Tada H, Seo Y, Ishizu T, Igawa M, Sekiguchi Y, Kuga K, Aonuma K, Rodriguez A C, Mejias J, Hidalgo P, Hidalgo L JA, Orczykowski M, Derejko P, Walczak F, Szufladowicz E, Urbanek P, Bodalski R, Bieganowska K, Szumowski L, Peichl P, Wichterle D, Cihak R, Skalsky I, Kautzner J, Kubus P, Vit P, Zaoral L, Peichl P, Gebauer RA, Fiala M, Janousek J, Hiroshima K, Goya M, Ohe M, Hayashi K, Makihara Y, Nagashima M, An Y, Nobuyoshi M, Schloesser M, Lawrenz T, Meyer Zu Vilsendorf D, Strunk-Mueller C, Stellbrink C, Papagiannis J, Avramidis D, Kokkinakis C, Kirvassilis G, Eidelman G, Arenal A, Datino T, Atienza F, Gonzalez Torrecilla E, Miracle A, Hernandez J, Fernandez Aviles F, Ene E, Caldararu C, Iorgulescu C, Dorobantu M, Vatasescu RG, Insulander P, Bastani H, Braunschweig F, Drca N, Kenneback G, Schwieler J, Tapanainen J, Jensen-Urstad M, Andrea B, Andrea EMA, Maciel WM, Siqueira LS, Cosenza RC, Mittidieri FM, Farah SF, Atie JA, Kanoupakis E, Kallergis E, Mavrakis H, Goudis C, Saloustros I, Malliaraki N, Chlouverakis G, Vardas P, Bonnes JL, Jaspers Focks J, Westra SW, Brouwer MA, Smeets JLRM, Inama G, Pedrinazzi C, Landolina M, Oliva F, Senni M, Proclemer A, Zoni Berisso M, Mostov S, Haim M, Nevzorov R, Hasadi D, Starsberg B, Porter A, Kuschyk J, Schoene A, Streitner F, Veltmann CG, Schimpf R, Borggrefe M, Luesebrink U, Gardiwal A, Oswald H, Koenig T, Duncker D, Klein G, Bastiaenen R, Batchvarov V, Atty O, Cheng JH, Behr ER, Gallagher MM, Starrenburg AH, Kraaier K, Pedersen SS, Scholten MF, Van Der Palen J, Adhya S, Smith LA, Zhao T, Bannister C, Kamdar RH, Martinelli M, Siqueira S, Greco R, Nishioka SAD, Pedrosa AAA, Alkmim-Teixeira R, Peixoto GL, Costa R, Pedersen SS, Versteeg H, Nielsen JC, Mortensen PT, Johansen JB, Kwasniewski W, Filipecki A, Urbanczyk-Swic D, Orszulak W, Trusz - Gluza M, Jimenez-Candil J, Hernandez J, Morinigo J, Ledesma C, Martin-Luengo C, Vogtmann T, Gomer M, Stiller S, Kuehlkamp V, Zach G, Loescher S, Kespohl S, Baumann G, Snell JD, Korsun N, Rooke R, Snell JR, Morley B, Bharmi R, Nabutovsky Y, Mollerus M, Naslund L, Meyer A, Lipinski M, Libey B, Dornfeld K, Jimenez-Candil J, Hernandez J, Martin A, Gallego M, Morinigo J, Ledesma C, Martin-Luengo C, De Bie MK, Van Rees JB, Borleffs CJ, Thijssen J, Jukema JW, Schalij MJ, Van Erven L, Van Der Velde ET, Witteman TA, Foeken H, Van Erven L, Schalij MJ, Szili-Torok T, Akca F, Caliskan K, Ten Cate F, Jordaens L, Michels M, Cozma DC, Petrescu L, Mornos C, Dragulescu SI, Groeneweg JA, Velthuis BK, Cox MGPJ, Loh P, Dooijes D, Cramer MJ, De Bakker JMT, Hauer RNW, Park SD, Shin SH, Woo SI, Kwan J, Park KS, Kim DH, Kwan J, Iorio A, Vitali Serdoz L, Brun F, Daleffe E, Zecchin M, Dal Ferro M, Santangelo S, Sinagra GF, Ouali S, Hammemi R, Hammas S, Kacem S, Gribaa R, Neffeti E, Remedi F, Boughzela E, Korantzopoulos P, Letsas K, Christogiannis Z, Kalantzi K, Ntorkos A, Goudevenos J, Foley PWX, Yung L, Barnes E, Munetsugu Y, Tanno K, Kikuchi M, Ito H, Miyoshi F, Kawamura M, Kobayashi Y, Pecini R, Marott JM, Jensen GB, Theilade J, Mine T, Kodani T, Masuyama T, Mozos IM, Serban C, Costea C, Susan L, Barthel P, Mueller A, Malik M, Schmidt G, Schmidt G, Barthel P, Mueller A, Malik M, Karakurt O, Kilic H, Munevver Sari DR, Mroczek-Czernecka D, Pietrucha AZ, Borowiec A, Wnuk M, Bzukala I, Kruszelnicka O, Konduracka E, Nessler J, Kikuchi Y, Meireles A, Gomes C, Anjo D, Roque C, Pinheiro Vieira A, Lagarto V, Hipolito Reis A, Torres S, Nof E, Miller L, Kuperstein R, Eldar M, Glikson M, Luria D, Vedrenne G, Bruguiere E, Redheuil A. Poster Session 2. Europace 2011. [DOI: 10.1093/europace/eur222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Sasaki T, Mizuno K, Miyake F, Adragao PP, Cavaco D, Miranda R, Santos M, Morgado F, Reis Santos K, Candeias R, Marcelino S, Zoppo F, Grandolino G, Zerbo F, Bertaglia E, Schlueter SM, Grebe O, Vester EG, Miracle Blanco AL, Arenal Maiz A, Atienza Fernandez F, Datino Romaniega T, Gonzalez Torrecilla E, Eidelman G, Hernandez Hernandez J, Fernandez Aviles F, Fukumoto K, Takatsuki S, Kimura T, Nishiyama N, Aizawa Y, Sato T, Miyoshi S, Fukuda K, Richter B, Gwechenberger M, Socas A, Zorn G, Albinni S, Marx M, Wojta J, Goessinger H, Deneke T, Balta O, Paesler M, Buenz K, Anders H, Horlitz M, Muegge A, Shin DI, Natsuyama K, Yamaguchi KM, Nishida YN, De Bortoli A, Ohm OJ, Hoff PI, Solheim E, Schuster P, Sun LZ, Chen J, Kosiuk J, Bode K, Arya A, Piorkowski C, Gaspar T, Sommer P, Hindricks G, Bollmann A, Wichterle D, Peichl P, Simek J, Havranek S, Bulkova V, Cihak R, Kautzner J, Jurado Roman A, Salguero Bodes R, Lopez Gil M, Fontenla Cerezuela A, De Riva Silva M, Arribas Ynsaurriaga F, Fernandez 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CS, Kardos A, Miranda R, Almeida S, Santos MB, Cavaco D, Quaresma R, Morgado FB, Adragao P, Fatemi M, Didier R, Le Gal G, Etienne Y, Jobic Y, Gilard M, Boschat J, Mansourati J, Zubaid M, Rashed W, Alsheikh-Ali A, Almahmeed W, Shehab A, Sulaiman K, Asaad N, Amin H, Boersma LVA, Swaans M, Post M, Rensing B, Jarverud K, Broome M, Noren K, Svensson T, Hjelm S, Hollmark M, Bjorling A, Providencia RA, Botelho A, Trigo J, Nascimento J, Quintal N, Mota P, Leitao-Marques AM, Maeda K, Takagi M, Suzuki K, Tatsumi H, Yoshiyama M, Simeonidou E, Michalakeas C, Kastellanos S, Varounis C, Nikolopoulou A, Koniari C, Anastasiou-Nana M, Furukawa T, Maggi R, Bertolone C, Fontana D, Brignole M, Pietrucha AZ, Wnuk M, Bzukala I, Mroczek-Czernecka D, Konduracka E, Kruszelnicka O. Poster Session 4. Europace 2011. [DOI: 10.1093/europace/eur231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Alings M, Vireca E, Bastian D, Wardeh AJ, Nimeth C, Tukkie R, Trinks S, Kainz W, Delaney C, Kaltofen G, Ziekenhuis A, Bloch-Thomsen PE, Cihalik C, Lawo T, Agraou B, Deutsch P, Bazin P, Guyomar Y, Bobillier M, Defaye P, Amiel A, Lazarus A, Guenoun M, Le Franc P, Oei FL, Nicastia D, Hoenen S, de Porto AE, Vontobel H, Robles de Medina R, Kainz W, Brunner P, Alzueta J, Santos JA, Navarro AB, Hie C, Kautzner J, Ammann-Kardiol P, Kaltofen G, Tukkie R, Zeindlhofer E, Nimeth C, Frommel M, Brachmann J, Gohl K, Trinks S, van der Meer P, Zenker G, Gebetsberger F, Unger T, Ruiter JH, Ramanna H, Hadj KB, Lang A, Predel D, Schnabel A, Martinek M, Cheng CW, Ward K, Jensen G, O'Nunain S, Jiang S, Terpstra WF, Budschedl E, van Doorn DJ, Marenne F, Wahlers T, Zeus T, Osswald S, Engby B, Christensen PD, Junbo G, van der Veen M. Clinical use of automatic pacemaker algorithms: results of the AUTOMATICITY registry. Europace 2011; 13:976-83. [DOI: 10.1093/europace/eur052] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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