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Vamos M, Nemeth M, Kesoi B, Papp R, Polgar B, Ruppert M, Mikler C, Liptak A, Selley T, Balazs T, Szili-Torok T, Zima E, Zoltan Duray G. Key influences of VDD (DX) ICD selection: Results from a prospective, national survey. Pacing Clin Electrophysiol 2024; 47:893-901. [PMID: 38884620 DOI: 10.1111/pace.15028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/19/2024] [Accepted: 05/30/2024] [Indexed: 06/18/2024]
Abstract
BACKGROUND To preserve the benefit of atrial sensing without the implantation of an additional lead, a single-lead ICD system with a floating atrial dipole (DX ICD) has been developed. The purpose of this nationwide survey was to provide an overview of the current key influences of device selection focusing on DX ICD and to test the applicability of a previously published decision-making flowchart of ICD-type selection. METHODS An online questionnaire was sent to all implanting centers in Hungary. Eleven centers reported data from 361 DX ICD and 10 CRT-DX systems implantations between February 2021 and May 2023. RESULTS The most important influencing clinical factors indicated by the participating doctors were elevated risk of atrial fibrillation (AF)/stroke (56%), risk of sinus/supraventricular tachycardias (SVT) (42%), and a potential need for CRT upgrade in the future (36%). The DX ICD was considered in the majority of cases instead of the VVI system (87%), and only in a small proportion instead of a DDD ICD (13%). 60% of the patients with DX ICDs were also included into remote monitoring-based follow-up. In 83% of the cases, good (>2 mV) or excellent (>5) atrial signal amplitude was recorded within 6 weeks after the implantation. CONCLUSION In the current national survey, the most important influencing factors indicated by the implanters for selecting a DX ICD were the elevated risk of stroke or sinus/SVT and a potential need for CRT upgrade in the future. These findings support the use of a previously published decision-making flowchart.
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Affiliation(s)
- Mate Vamos
- Cardiology Center, University of Szeged, Szeged, Hungary
| | - Marianna Nemeth
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Bence Kesoi
- Department of Adult Cardiology, Gottsegen National Cardiovascular Center, Budapest, Hungary
| | - Roland Papp
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Balazs Polgar
- Central Hospital of Northern Pest - Military Hospital, Budapest, Hungary
| | - Mihaly Ruppert
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Csaba Mikler
- Borsod-Abaúj-Zemplén County Central Hospital and University Teaching Hospital, Miskolc, Hungary
| | | | | | | | | | - Endre Zima
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Gabor Zoltan Duray
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
- Central Hospital of Northern Pest - Military Hospital, Budapest, Hungary
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Jiang J, Sun X, Chen R, Su Y, Xu W, Cheng C, Zhang S. Association between nighttime heart rate and cardiovascular mortality in patients with implantable cardioverter-defibrillator: A cohort study. Heart Rhythm 2023; 20:1682-1688. [PMID: 37689174 DOI: 10.1016/j.hrthm.2023.08.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/27/2023] [Accepted: 08/31/2023] [Indexed: 09/11/2023]
Abstract
BACKGROUND Although studies have shown that an increased resting heart rate measured randomly at a single point of the day has been associated with adverse cardiovascular outcomes, the utility of continuous monitoring of nighttime heart rate (NTHR) has remained largely uninvestigated. OBJECTIVE This study aimed to explore the association between NTHR and cardiovascular mortality. METHODS The Study of Home Monitoring System Safety and Efficacy in Cardiac Implantable Electronic Device-implanted Patients, which is a prospective cohort study, enrolled patients with implantable cardioverter-defibrillator (ICD) or cardiac resynchronization therapy defibrillator between 2010 and 2015. Baseline NTHR was measured during the programmed sleep period from 30 to 60 days after implantation. The primary outcome was cardiovascular mortality, fitted by a restricted cubic spline function. RESULTS A total of 534 implantable cardioverter-defibrillator recipients with sinus rhythm during the detection window were included in the study. The mean baseline NTHR was 59.6 ± 8.0 beats/min. During the follow-up period of 60.4 ± 21.8 months, 88 (16.5%) patients experienced cardiovascular mortality. After considering potential confounders, a linear association was observed. Each 1 beat/min increase in NTHR was associated with a 7.8%, 10.1%, and 5.7% increase in the risk of cardiovascular mortality in the total population, patients with heart failure, and patients without heart failure, respectively. CONCLUSION Continuous monitoring of NTHR may identify patients at high risk of cardiovascular mortality in a timely manner, with the potential for "preemptive" action. TRIAL REGISTRATION No. ChiCTR-ONRC-13003695.
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Affiliation(s)
- Jiang Jiang
- State Key Laboratory of Cardiovascular Disease, Arrhythmia Center, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xuerong Sun
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Ruohan Chen
- State Key Laboratory of Cardiovascular Disease, Arrhythmia Center, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yangang Su
- Department of Cardiology, Cardiology, Shanghai Institute of Cardiovascular Diseases, Fudan University, Shanghai, China
| | - Wei Xu
- Department of Cardiology, Nanjing Drum Tower Hospital, Nanjing, China
| | - Chendi Cheng
- Department of Cardiovascular Medicine, the Second Xiangya Hospital of Central South University, Changsha, China.
| | - Shu Zhang
- State Key Laboratory of Cardiovascular Disease, Arrhythmia Center, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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3
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D’Onofrio A, Marini M, Rovaris G, Zanotto G, Calvi V, Iacopino S, Biffi M, Solimene F, Della Bella P, Caravati F, Pisanò EC, Amellone C, D’Alterio G, Pedretti S, Santobuono VE, Russo AD, Nicolis D, De Salvia A, Baroni M, Quartieri F, Manzo M, Rapacciuolo A, Saporito D, Maines M, Marras E, Bontempi L, Morani G, Giacopelli D, Gargaro A, Giammaria M. Prognostic significance of remotely monitored nocturnal heart rate in heart failure patients with reduced ejection fraction. Heart Rhythm 2022. [DOI: 10.1016/j.hrthm.2022.10.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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4
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Diemberger I, Massaro G, Rossillo A, Chieffo E, Dugo D, Guarracini F, Pellegrino PL, Perna F, Landolina M, De Ponti R, Berisso MZ, Ricci RP, Boriani G. Temporary transvenous cardiac pacing: a survey on current practice. J Cardiovasc Med (Hagerstown) 2021; 21:420-427. [PMID: 32332379 DOI: 10.2459/jcm.0000000000000959] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Temporary transvenous cardiac pacing (TTCP) is a standard procedure in current practice, despite limited coverage in consensus guidelines. However, many authors reported several complications associated with TTCP, especially development of infections of cardiac implantable electronic devices (CIED). The aim of this survey was to provide a country-wide picture of current practice regarding TTCP. METHODS Data were collected using an online survey that was administered to members of the Italian Association of Arrhythmology and Cardiac Pacing. RESULTS We collected data from 102 physicians, working in 81 Italian hospitals from 17/21 regions. Our data evidenced that different strategies are adopted in case of acute bradycardia with a tendency to limit TTCP mainly to advanced atrioventricular block. However, some centers reported a greater use in elective procedures. TTCP is usually performed by electrophysiologists or interventional cardiologists and, differently from previous reports, mainly by a femoral approach and with nonfloating catheters. We found high inhomogeneity regarding prevention of infections and thromboembolic complications and in post-TTCP management, associated with different TTCP volumes and a strategy for management of acute bradyarrhythmias. CONCLUSION This survey evidenced a high inhomogeneity in the approaches adopted by Italian cardiologists for TTCP. Further studies are needed to explore if these divergences are associated with different long-term outcomes, especially incidence of CIED-related infections.
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Affiliation(s)
- Igor Diemberger
- Institute of Cardiology, Department of Experimental, Diagnostic and Specialty Medicine, Policlinico S.Orsola-Malpighi University of Bologna, Bologna
| | - Giulia Massaro
- Institute of Cardiology, Department of Experimental, Diagnostic and Specialty Medicine, Policlinico S.Orsola-Malpighi University of Bologna, Bologna
| | | | - Enrico Chieffo
- Institute of Cardiology, Maggiore Hospital, Crema, Italy
| | - Daniela Dugo
- Department of Cardiology and Angiology, Cardioangiologisches Centrum Bethanien, Agaplesion Markus Krankenhaus, Frankfurt/Main, Germany
| | | | | | - Francesco Perna
- Department of Cardiovascular Sciences, Catholic University of Sacred Heart, Rome
| | | | - Roberto De Ponti
- Department of Heart and Vessels, Circolo e Fondazione Macchi Hospital, Varese
| | | | | | - Giuseppe Boriani
- Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, Policlinico di Modena University of Modena and Reggio Emilia, Modena, Italy
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5
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VDD ICD systems: Can they keep us afloat in a sea of dual chamber devices? Trends Cardiovasc Med 2021; 32:90-91. [PMID: 33561580 DOI: 10.1016/j.tcm.2021.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 01/30/2021] [Indexed: 11/22/2022]
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6
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Vamos M, Nemeth M, Balazs T, Zima E, Duray GZ. Rationale and feasibility of the atrioventricular single-lead ICD systems with a floating atrial dipole (DX) in clinical practice. Trends Cardiovasc Med 2021; 32:84-89. [PMID: 33482321 DOI: 10.1016/j.tcm.2021.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 01/30/2023]
Abstract
Cardiac implantable electronic devices establish proper therapy for the prevention of sudden cardiac death, significantly reducing the morbidity and mortality of patients with arrhythmias and heart failure. It is well-known that the number of electrodes increases the risk of complications. To preserve the benefit of atrial sensing without the need to implant an additional lead, a single-lead ICD system with a floating atrial dipole (DX ICD lead) has been developed. Besides all of the potential benefits, the necessity of a reliable and stable atrial sensing via the floating dipole could be the main concern against the use of this lead type. In the current generation of DX devices, the specially filtered atrial signal seems to be high enough and stable over time, which is crucial in the early detection of atrial arrhythmias, discrimination between different forms of tachycardias in order to prevent inappropriate ICD therapy, and achieving an optimal atrioventricular and interventricular synchrony in patients with a two-lead CRT-DX system. The present review summarizes the benefits and potential drawbacks of the DX ICD systems based on the available literature, furthermore, proposes an evidence-based algorithm of ICD type selection.
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Affiliation(s)
- Mate Vamos
- Department of Internal Medicine, Cardiac Electrophysiology Division, University of Szeged, Semmelweis u. 8., 6725 Szeged, Szeged, Hungary.
| | | | | | - Endre Zima
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Gabor Zoltan Duray
- Department of Cardiology, Medical Centre, Hungarian Defense Forces, Budapest, Hungary
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7
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Abstract
Over the years, pacemakers have evolved from a life-saving tool to prevent asystole to a device to treat heart rhythm disorders and heart failure, aiming at improving both cardiac function and clinical outcomes. Cardiac stimulation nowadays aims to correct the electrophysiologic roots of mechanical inefficiency in different structural heart diseases. This has led to awareness of the concealed risks of customary cardiac pacing that can inadvertently cause atrioventricular and inter-/intra-ventricular dyssynchrony, and has promoted the development of new pacing modalities and the use of stimulation sites different from the right atrial appendage and the right ventricular apex. The perspective of truly physiologic pacing is the leading concept of the continued research in the past 30 years, which has made cardiac stimulation procedure more sophisticated and challenging. In this article, we analyze the emerging evidence in favor of the available strategies to achieve an individualized physiologic setting in bradycardia pacing.
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Biffi M, Capobianco C, Spadotto A, Bartoli L, Sorrentino S, Minguzzi A, Piemontese GP, Angeletti A, Toniolo S, Statuto G. Pacing devices to treat bradycardia: current status and future perspectives. Expert Rev Med Devices 2020; 18:161-177. [PMID: 33336616 DOI: 10.1080/17434440.2021.1866543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Introduction: Cardiac stimulation evolved from life-saving devices to prevent asystole to the treatment of heart rhythm disorders and heart failure, capable of remote patient and disease-progression monitoring. Cardiac stimulation nowadays aims to correct the electrophysiologic roots of mechanical inefficiency in different structural heart diseases.Areas covered: Clinical experience, as per available literature, has led to awareness of the concealed risks of customary cardiac pacing, that can inadvertently cause atrio-ventricular and inter/intra-ventricular dyssynchrony. New pacing modalities have emerged, leading to a new concept of what truly represents 'physiologic pacing' beyond maintenance of atrio-ventricular coupling. In this article we will analyze the emerging evidence in favor of the available strategies to achieve an individualized physiologic setting in bradycardia pacing, and the hints of future developments.Expert opinion: 'physiologic stimulation' technologies should evolve to enable an effective and widespread adoption. In one way new guiding catheters and the adoption of electrophysiologic guidance and non-fluoroscopic lead implantation are needed to make His-Purkinje pacing successful and effective at long term in a shorter procedure time; in the other way leadless stimulation needs to upgrade to a superior physiologic setting to mimic customary DDD pacing and possibly His-Purkinje pacing.
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Affiliation(s)
- Mauro Biffi
- Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy
| | - Claudio Capobianco
- Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy.,Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - Alberto Spadotto
- Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy.,Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - Lorenzo Bartoli
- Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy.,Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - Sergio Sorrentino
- Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy.,Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - Alessandro Minguzzi
- Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy.,Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - Giuseppe Pio Piemontese
- Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy.,Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - Andrea Angeletti
- Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy.,Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - Sebastiano Toniolo
- Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy.,Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - Giovanni Statuto
- Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy.,Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
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9
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Shaik NA, Drucker M, Pierce C, Duray GZ, Gillett S, Miller C, Harrell C, Thomas G. Novel two-lead cardiac resynchronization therapy system provides equivalent CRT responses with less complications than a conventional three-lead system: Results from the QP ExCELs lead registry. J Cardiovasc Electrophysiol 2020; 31:1784-1792. [PMID: 32412126 PMCID: PMC7496977 DOI: 10.1111/jce.14552] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/05/2020] [Accepted: 05/11/2020] [Indexed: 01/20/2023]
Abstract
Introduction The novel two‐lead cardiac resynchronization therapy (CRT)‐DX system utilizes a floating atrial dipole on the implantable cardioverter‐defibrillator lead, and when implanted with a left ventricular (LV) lead, offers a two‐lead CRT system with AV synchrony. This study compared complication rates and CRT response among subjects implanted with a two‐lead CRT‐DX system to those subjects implanted with a standard three‐lead CRT‐D system. Methods and Results A total of 240 subjects from the Sentus QP—Extended CRT Evaluation with Quadripolar Left Ventricular Leads postapproval study were selected to identify 120 matched pairs based on similar demographic characteristics using a Greedy algorithm. The complication‐free rate was evaluated as the primary endpoint. All‐cause mortality, heart failure hospitalizations, device diagnostic data, New York Heart Association (NYHA) class improvement, and defibrillator therapy were evaluated from clinical data, in‐office interrogations, and remote monitoring throughout the follow‐up period. Complication‐free survival favored the CRT‐DX group with 92.5% without a major complication compared to 85.0% in the CRT‐D cohort (P = .0495; 95% confidence interval: 0.1%‐14.9%) over a mean follow‐up of 1.3 and 1.4 years, respectively. Incidence of all‐cause mortality, heart failure hospitalizations, NYHA changes at 6 months postimplant, and percent of LV pacing during CRT therapy were similar in both device cohorts. Inappropriate shocks were more frequent in the CRT‐D cohort with 5.8% of subjects receiving an inappropriate shock vs 0.8% in the CRT‐DX cohort. Conclusion The results of this subanalysis demonstrate that the CRT‐DX system can provide similar CRT responses and significantly fewer complications when compared to a similar cohort with a conventional three‐lead CRT‐D system.
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Affiliation(s)
- Naushad A Shaik
- Department of Cardiac Electrophysiology, Advent Health Orlando, Orlando, Florida
| | - Michael Drucker
- Department of Cardiac Electrophysiology, Novant Health Cardiology of Forsyth Medical Center, Winston-Salem, North Carolina
| | - Christopher Pierce
- Department of Cardiac Electrophysiology, Sanford Medical Center, Fargo, North Dakota
| | - Gabor Z Duray
- Department of Cardiology, Medical Centre, Hungarian Defense Forces, Budapest, Hungary
| | - Shane Gillett
- Clinical Studies Department, Biotronik, Inc, Lake Oswego, Oregon
| | - Crystal Miller
- Clinical Studies Department, Biotronik, Inc, Lake Oswego, Oregon
| | - Camden Harrell
- Clinical Studies Department, Biotronik, Inc, Lake Oswego, Oregon
| | - George Thomas
- Division of Cardiology, Weill Cornell Medical College, New York, New York
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Biffi M, Iori M, De Maria E, Bolognesi MG, Placci A, Calvi V, Allocca G, Ammendola E, Carinci V, Boggian G, Saporito D, Grassini D, Giacopelli D, Statuto G, Ziacchi M. The role of atrial sensing for new‐onset atrial arrhythmias diagnosis and management in single‐chamber implantable cardioverter‐defibrillator recipients: Results from the THINGS registry. J Cardiovasc Electrophysiol 2020; 31:846-853. [DOI: 10.1111/jce.14396] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/30/2020] [Accepted: 02/11/2020] [Indexed: 01/06/2023]
Affiliation(s)
- Mauro Biffi
- Policlinico S. Orsola‐Malpighi, Azienda OspedalieroUniversitaria di BolognaBologna Italy
| | - Matteo Iori
- Arcispedale Santa Maria Nuova IRCCSReggio Emilia Italy
| | | | | | - Angelo Placci
- Azienda OspedalieroUniversitaria di ParmaParma Italy
| | - Valeria Calvi
- Policlinico G. Rodolico, Az. O.U. Policlinico—V. EmanueleCatania Italy
| | | | | | | | | | | | | | | | - Giovanni Statuto
- Policlinico S. Orsola‐Malpighi, Azienda OspedalieroUniversitaria di BolognaBologna Italy
| | - Matteo Ziacchi
- Policlinico S. Orsola‐Malpighi, Azienda OspedalieroUniversitaria di BolognaBologna Italy
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11
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Biffi M, D'Onofrio A, Pignalberi C, Pisanò EC, Iacopino S, Curnis A, Senatore G, Capucci A, Della Bella P, Calvi V, Zanotto G, Caravati F, Maglia G, Manzo M, Santamaria M, Ziacchi M, Lissoni F, Giacopelli D, Gargaro A, Solimene F. Rate-responsive pacing and atrial high rate episodes in cardiac resynchronization therapy patients: Is low heart rate the key? Clin Cardiol 2019; 42:820-828. [PMID: 31282000 PMCID: PMC6727874 DOI: 10.1002/clc.23227] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/20/2019] [Accepted: 06/28/2019] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND The role of atrial rate-responsive (RR) pacing in cardiac resynchronization therapy (CRT) is unclear due to the favorable effect of rate lowering in systolic heart failure. Atrial high rate episodes (AHREs) in CRT recipients are particularly worrisome since they cause loss of CRT, beyond representing a stroke risk factor. HYPOTHESIS The presence of an association between RR and the incidence of AHREs. METHODS Daily remote transmissions from 836 CRT recipients were analyzed. AHREs were classified by duration: ≥15 minutes, ≥5 hours, and ≥ 24 hours. Variables possibly associated to AHREs were included in time-dependent proportional-hazard models, averaging over 30-day periods and adjusting for main baseline variables. RESULTS After a median follow-up of 23.9 (12.2-36.0) months, 507 (60.6%) patients experienced at least one 15-minute AHRE. RR function was programmed in 166 (19.8%) patients and was associated with an increased AHRE occurrence rate with hazard ratio (HR) ranging from 1.45 to 1.78 for the 3 cutoffs of episode duration. The negative effect of RR function was not observed in the subset of patients with low mean heart rate (<68 bpm). Higher mean heart rates increased AHRE risk (HR:1.02, P = .01), while CRT amount decreased it (HR:0.98, P < .01). The extent of atrial pacing did not predict AHRE occurrence. CONCLUSIONS RR pacing in CRT recipients is associated with increased AHRE occurrence, especially when an average heart rate > 68 bpm is attained.
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Affiliation(s)
- Mauro Biffi
- Policlinico Sant'Orsola‐MalpighiBolognaItaly
| | | | | | | | | | | | | | | | | | - Valeria Calvi
- Policlinico Vittorio Emanuele PO FerrarottoCataniaItaly
| | | | | | | | - Michele Manzo
- Azienda Ospedaliera Universitaria S.Giovanni di Dio e Ruggi D'AragonaSalernoItaly
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