751 results match your criteria Pacemaker Malfunction


Implantable loop recorder as a strategy following cardiovascular implantable electronic device extraction without reimplantation.

Pacing Clin Electrophysiol 2022 May 19. Epub 2022 May 19.

Division of Cardiology, Department of Medicine, Cardiovascular Institute, University of California San Diego, La Jolla, CA, USA.

Background: Limited data exists for outcomes in patients undergoing cardiovascular implantable electronic device (CIED) transvenous lead extraction (TLE) without clear indications for device reimplantation. The implantable loop recorder (ILR) may be an effective strategy for continuous monitoring in select individuals.

Objective: This retrospective analysis aims to investigate patients who have undergone ILR implant following TLE without CIED reimplantation. Read More

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Materials Perspectives for Self-Powered Cardiac Implantable Electronic Devices toward Clinical Translation.

Authors:
Jun Li Xudong Wang

Acc Mater Res 2021 Sep 23;2(9):739-750. Epub 2021 Aug 23.

Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.

Represented by pacemakers, implantable electronic devices (CIEDs) are playing a vital life-saving role in modern society. Although the current CIEDs are evolving quickly in terms of performance, safety, and miniaturization, the bulky and rigid battery creates the largest hurdle toward further development of a soft system that can be attached and conform to tissues without causing undesirable physiologic changes. Over 50% of patients with pacemakers require additional surgery procedures to replace a drained battery. Read More

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September 2021

Assessing the safety of interrogating cardiac-implantable electronic devices with brand-mismatched remote interrogators: a pilot study.

Clin Exp Emerg Med 2022 Mar 31;9(1):24-28. Epub 2022 Mar 31.

Department of Emergency Medicine, Baylor College of Medicine, Houston, TX, USA.

Objective: Remote cardiac implantable electronic device (CIED) interrogators, originally developed for home use, have been proven to be efficacious in clinical settings, especially emergency departments. Concern exists that attempting to interrogate a CIED with the remote interrogator of a different brand, i.e. Read More

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Postmortem Interrogation of Cardiac Implantable Electronic Devices: A 15-Year Experience.

JACC Clin Electrophysiol 2022 03 22;8(3):356-366. Epub 2021 Dec 22.

Department of Cardiology, Baker Heart and Diabetes Institute, Prahran, Victoria, Australia; Department of Cardiology, Alfred Hospital, Prahran, Victoria, Australia; Department of Cardiology, Western Health, St Albans, Victoria, Australia; Department of Medicine, Monash University, Clayton, Victoria, Australia. Electronic address:

Objectives: This study sought to define the feasibility and utility of postmortem cardiac implantable electronic device (CIED) interrogation.

Background: The diagnostic yield of routine postmortem interrogation of CIEDs including pacemakers, defibrillators, and implantable loop recorders has not been established.

Methods: The study reviewed all CIED interrogations in deceased individuals undergoing medicolegal investigation of sudden or unexplained death by the Victorian Institute of Forensic Medicine between 2005 and 2020. Read More

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Transvenous laser lead extraction in patients with congenital complete heart block.

Heart Rhythm 2022 Mar 4. Epub 2022 Mar 4.

Division of Cardiovascular Medicine, University of California San Diego, San Diego, California.

Background: Data on lead management in patients with congenital complete heart block (CCHB) with cardiac implantable electronic devices are lacking.

Objective: The purpose of this study was to describe the natural history and outcomes in patients with CCHB with cardiac implantable electronic devices undergoing transvenous lead extraction (TLE).

Methods: Data on all attempted TLE procedures in patients with CCHB at 2 institutions between 2011 and 2021 were collected from a retrospective registry. Read More

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Remote programming of cardiac implantable electronic devices: A novel approach to program cardiac devices for magnetic resonance imaging.

J Cardiovasc Electrophysiol 2022 May 12;33(5):1005-1009. Epub 2022 Mar 12.

Division of Cardiovascular Medicine, University of Missouri Columbia, Columbia, Missouri, USA.

Background: Magnetic resonance imaging (MRI) in patients with MRI-conditional cardiovascular implantable electronic devices (CIED) remain a logistical issue for device programming during the scan. In current practice, a trained person needs to be present on-site to program CIED for MRI scan. This can cause delay in patient care, rescheduling of tests and increase healthcare costs. Read More

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How to perform extrathoracic venous access for cardiac implantable electronic device placement: Detailed description of techniques.

Heart Rhythm 2022 Feb 26. Epub 2022 Feb 26.

Electrophysiology Service, CHI Saint Joseph Hospital, Lexington, Kentucky. Electronic address:

Venous access is needed for implantation of cardiac implantable electronic devices (CIEDs) with endocardial leads. Extrathoracic venous access in the prepectoral region has become the standard of care for CIED implantation because of lower risks for pneumothorax and likely less lead malfunction due to subclavian crush syndrome. The most common extrathoracic venous access sites in the pectoral region are extrathoracic subclavian vein access, axillary vein access, and cephalic vein access. Read More

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February 2022

Long-Term Implications of Pacemaker Insertion in Younger Adults: A Single Centre Experience.

Heart Lung Circ 2022 Feb 23. Epub 2022 Feb 23.

Heart Centre, Alfred Health, Melbourne, Vic, Australia; Monash University, Melbourne, Vic, Australia; The Baker Heart and Diabetes Institute, Melbourne, Vic, Australia; Department of Cardiology, Western Health, Melbourne, Vic, Australia. Electronic address:

Background: The long-term implications of pacemaker insertion in younger adults are poorly described in the literature.

Methods: We performed a retrospective analysis of consecutive younger adult patients (18-50 yrs) undergoing pacemaker implantation at a quaternary hospital between 1986-2020. Defibrillators and cardiac resynchronisation therapy devices were excluded. Read More

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February 2022

An unprecedented cause of cardiac resynchronization with defibrillator (CRT-D) malfunction "A beheaded generator assembly".

J Cardiovasc Electrophysiol 2022 Apr 11;33(4):769-772. Epub 2022 Feb 11.

Electrophysiology and Arrhythmia Service, Veterans Administration Medical Center, Loma Linda University, Loma Linda, California, USA.

Cardiac resynchronization with defibrillator (CRT-D) malfunction can be due to various reasons, including wire injury, insulation break, battery problems, or patient factors. Undesired outcomes can be dramatically elevated in those settings, prompting early detection and proper troubleshooting. To diagnose, clinical correlation and device interrogation are vital. Read More

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Experience with malfunctioning leadless pacemakers: Troubleshooting and management during medium-term follow-up.

Heart Rhythm 2022 Jan 26. Epub 2022 Jan 26.

Isala Clinics, Zwolle, The Netherlands; Diagram Research, Zwolle, The Netherlands.

Background: The Nanostim leadless pacemaker (LP) was launched in 2012. However, the use of Nanostim LP was suspended because of safety concerns.

Objective: The aim of this study was to report our experience with the management of malfunctioning Nanostim LPs, including premature battery depletion. Read More

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January 2022

Feasibility of adenosine stress cardiovascular magnetic resonance perfusion imaging in patients with MR-conditional transvenous permanent pacemakers and defibrillators.

J Cardiovasc Magn Reson 2022 01 13;24(1). Epub 2022 Jan 13.

Cardiovascular Department, Division of Cardiology, Lausanne University Hospital (CHUV), Lausanne, Switzerland.

Background: The use of stress perfusion-cardiovascular magnetic resonance (CMR) imaging remains limited in patients with implantable devices. The primary goal of the study was to assess the safety, image quality, and the diagnostic value of stress perfusion-CMR in patients with MR-conditional transvenous permanent pacemakers (PPM) or implantable cardioverter-defibrillators (ICD).

Methods: Consecutive patients with a transvenous PPM or ICD referred for adenosine stress-CMR were enrolled in this single-center longitudinal study. Read More

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January 2022

In-vitro investigation of cardiac implantable electronic device malfunction during and after direct photon exposure: A three-centres experience.

Phys Med 2022 Feb 7;94:94-101. Epub 2022 Jan 7.

Arrhythmology Unit, "SS. Annunziata" Hospital, Chieti, Italy.

Purpose: Radiotherapy may cause malfunction of implantable cardioverter-defibrillators (ICDs) and pacemakers (PMs). We carried-out a multicentre randomized in-vitro study on 65 ICDs and 145 PMs to evaluate malfunctions during and after direct irradiation to doses up to 10 Gy.

Methods: Three centres equipped with different linear accelerator and treatment-planning systems participated in the study. Read More

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February 2022

[Changes in cardiac implantable electronic device follow-up induced by the COVID-19 pandemic in 2020: report of a single-centre experience].

G Ital Cardiol (Rome) 2022 01;23(1):4-9

U.O.C. Cardiologia di Ravenna, Faenza e Lugo, Ospedale "S. Maria delle Croci", Ravenna; Azienda Unità Sanitaria Locale della Romagna, Ravenna.

Background: The COVID-19 pandemic caused by SARS-CoV-2 has greatly modified outpatient follow-ups. The aim of this retrospective study was to evaluate the organizational modalities and clinical effects of rearrangements of pacemaker (PM) and implantable cardioverter-defibrillator (ICD) outpatient visits performed in our centers at Ravenna and Lugo Hospitals, Italy, during the pandemic outbreak in 2020.

Methods: All scheduled in-person device follow-up visits in March-December 2020 have been considered. Read More

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January 2022

Efficacy and safety of leadless pacemaker: A systematic review, pooled analysis and meta-analysis.

Indian Pacing Electrophysiol J 2022 Mar-Apr;22(2):77-86. Epub 2021 Dec 16.

Department of Cardiology, Royal Stoke University Hospital, Stoke-on-Trent, UK; School of Medicine, Keele University, Keele, UK. Electronic address:

Background: Leadless pacemakers have been designed as an alternative to transvenous systems which avoid some of the complications associated with transvenous devices. We aim to perform a systematic review of the literature to report the safety and efficacy findings of leadless pacemakers.

Methods: We searched MEDLINE and EMBASE to identify studies reporting the safety, efficacy and outcomes of patients implanted with a leadless pacemaker. Read More

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December 2021

Management of IMRT in a gastric cancer patient with pacemaker: A case report and review of the literature.

J Cancer Res Ther 2021 Oct-Dec;17(6):1559-1561

Department of Radiation Oncology, Cerrahpasa Medical School, Istanbul University-Cerrahpasa, Istanbul, Turkey.

Due to the prolongation of a lifetime, more cancer patients with cardiac implantable electronic devices are treated by radiotherapy. However, radiation may cause permanent or temporary malfunctions on these devices, and new-generation devices are more sensitive to radiation. Besides, radiotherapy techniques and image guidance methods that may cause different interactions with the functions of the devices have been changed significantly recently. Read More

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February 2022

Current Clinical Practice in Patients With Cardiac Implantable Electronic Devices (CIED) Undergoing Radiotherapy (RT).

Heart Lung Circ 2022 Mar 26;31(3):327-340. Epub 2021 Nov 26.

Department of Cardiology, Bendigo Health, Bendigo, Vic, Australia.

Patients with cardiac implantable electronic devices (CIED) undergoing radiotherapy (RT) becoming more common due to ageing of the population. With newer CIEDs implementing the complementary metal-oxide semiconductor (CMOS) technology which allows the miniaturisation of CIED, it is also more susceptible to RT. Effects of RT on CIED ranges from device interference, device operational/memory errors to permanent damage. Read More

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Lead insulation breach manifested by pectoral activation - Seeing is believing.

HeartRhythm Case Rep 2021 Nov 19;7(11):743-744. Epub 2021 Aug 19.

Division of Cardiovascular Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.

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November 2021

Quiet timer blanking in a dog with sick sinus syndrome and a permanent transvenous pacemaker.

J Vet Cardiol 2021 Dec 15;38:36-43. Epub 2021 Oct 15.

Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA. Electronic address:

A 14-year-old, 5.8 kg (12.7 lb) male castrated Jack Russell Terrier was referred for investigation of syncope and an arrhythmia. Read More

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December 2021

A sudden change in pacing rate: Normal or malfunction?

Ann Noninvasive Electrocardiol 2022 03 12;27(2):e12902. Epub 2021 Nov 12.

Department of Cardiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.

A woman with a dual-chamber pacemaker was examined for recurrent chest discomfort and palpitations at our hospital. The Holter monitor test recorded recurrent episodes of a sudden increase in pacing rate from 60 to 105 bpm, which corresponded to the symptoms. Orthodromic pacemaker-mediated arrhythmia (OPMA), caused by ventricular lead dislodgement and atrial far-field sensing, caused the recurrent episodes of a sudden change in pacing rate. Read More

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Successful application of closed loop stimulation pacemakers with remote monitoring in 3 miniature donkeys with syncope.

J Vet Intern Med 2021 Nov 6;35(6):2920-2925. Epub 2021 Nov 6.

Equine Cardioteam, Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Merelbeke, Belgium.

Rate-adaptive single chamber pacemakers with accelerometer, closed loop stimulation (CLS), and remote monitoring functionality (Eluna 8 SR-T, Biotronik, SE & Co, Germany) were implanted in 3 miniature donkeys with third-degree atrioventricular block and syncope. After recovery, different pacemaker programming modes were tested at rest, during stress without physical exercise and during physical exercise. Pacing rates were compared to actual atrial rates and showed that CLS functionality allowed physiological heart rate adaptation. Read More

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November 2021

Check the Need-Prevalence and Outcome after Transvenous Cardiac Implantable Electric Device Extraction without Reimplantation.

J Clin Med 2021 Sep 7;10(18). Epub 2021 Sep 7.

Department of Cardiac Electrophysiology and Arrhythmology, IRCCS San Raffaele Scientific Institute, San Raffaele Hospital, Vita-Salute University, 20132 Milan, Italy.

Background: after transvenous lead extraction (TLE) of cardiac implantable electric devices (CIEDs), some patients may not benefit from device reimplantation. This study sought to analyse predictors and long-term outcome of patients after TLE with vs. without reimplantation in a high-volume centre. Read More

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September 2021

Study of feasible and safe condition for total body irradiation using cardiac implantable electronic devices.

J Radiat Res 2021 Sep 20. Epub 2021 Sep 20.

Department of Radiation Oncology, Tokyo Women's Medical University, Tokyo 162-8666, Japan.

Cardiac implantable electronic devices (CIEDs) were believed to have a tolerance dose and that direct irradiation has to be avoided. Thus, no clinical guidelines have mentioned the feasibility of total body irradiation (TBI) with a CIED directly. The purpose of this work was to study a feasible and safe condition for TBI using a CIED. Read More

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September 2021

Current clinical practice in patients with cardiac implantable electronic devices undergoing radiotherapy: a literature review.

Europace 2022 03;24(3):362-374

Department of Cardiology, Bendigo Health, 100 Barnard Street, Bendigo, Victoria 3550, Australia.

Patients with cardiac implantable electronic devices (CIED) undergoing radiotherapy (RT) are more common due to the ageing of the population. With newer CIEDs' implementing the complementary metal-oxide semiconductor (CMOS) technology which allows the miniaturization of CIED, it is also more susceptible to RT. Effects of RT on CIED ranges from device interference, device operational/memory errors of permanent damage. Read More

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Late detection of a pacemaker malfunction.

Pacing Clin Electrophysiol 2021 Oct 14;44(10):1743-1745. Epub 2021 Sep 14.

Department of Cardiology, Rabindranath Tagore International Institute of Cardiac Sciences, Kolkata, India.

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October 2021

Electrical abnormalities with St. Jude/Abbott pacing leads: A systematic review and meta-analysis.

Heart Rhythm 2021 12 28;18(12):2061-2069. Epub 2021 Aug 28.

Division of Cardiology, Department of Internal Medicine, University of California San Francisco - San Francisco Veterans Affairs Medical Center, San Francisco, California. Electronic address:

Background: Although there is a paucity of contemporary data on pacemaker lead survival rates, small studies suggest that some leads may have higher malfunction rates than do others.

Objective: The purpose of this study was to determine the malfunction rates of current pacemaker leads.

Methods: A meta-analysis including studies that examined the non-implant-related lead malfunction rates of current commercially available active fixation pacemaker leads was performed. Read More

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December 2021

Zebrafish Models in Therapeutic Research of Cardiac Conduction Disease.

Authors:
Rui Gao Jie Ren

Front Cell Dev Biol 2021 4;9:731402. Epub 2021 Aug 4.

Xiamen Cardiovascular Hospital, Xiamen University, Xiamen, China.

Malfunction in the cardiac conduction system (CCS) due to congenital anomalies or diseases can cause cardiac conduction disease (CCD), which results in disturbances in cardiac rhythm, leading to syncope and even sudden cardiac death. Insights into development of the CCS components, including pacemaker cardiomyocytes (CMs), atrioventricular node (AVN) and the ventricular conduction system (VCS), can shed light on the pathological and molecular mechanisms underlying CCD, provide approaches for generating human pluripotent stem cell (hPSC)-derived CCS cells, and thus improve therapeutic treatment for such a potentially life-threatening disorder of the heart. However, the cellular and molecular mechanisms controlling CCS development remain elusive. Read More

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Magnetic resonance imaging safety in patients with cardiac implantable electronic devices.

Trends Cardiovasc Med 2021 Aug 9. Epub 2021 Aug 9.

Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD, United States; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, United States; Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States. Electronic address:

High strength magnetic and electric fields used in magnetic resonance imaging (MRI) render images with unmatched soft tissue contrast. These imaging attributes have made MRI an increasingly preferred diagnostic tool in many medical conditions. Initially there was substantial concern regarding the safety of performing these imaging studies in patients with cardiac implantable electronic devices (CIEDs), which have the potential to be affected by the intense electric and magnetic fields of the MRI. Read More

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The impact of CIEDs with automatic "wireless" remote monitoring on efficiency.

Pacing Clin Electrophysiol 2021 Oct 19;44(10):1671-1674. Epub 2021 Aug 19.

Department of Pediatrics, Division of Pediatric Cardiology, University of Michigan, Ann Arbor, Michigan, USA.

Background: A benefit of automatically transmitting or "wireless" CIEDs (W-CIED) is the prompt detection of device malfunction and arrhythmias. We hypothesized that the use of W-CIEDs would improve the efficiency of remote monitoring by decreasing unnecessary CIED remote transmissions because of the automatic detection of abnormalities.

Objective: To compare the frequency of patient-initiated transmissions in patients with W-CIEDs versus non-wireless CIEDs (NW-CIED) at a single pediatric and congenital heart center. Read More

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October 2021

Pacemaker malfunction? What is the mechanism?

J Electrocardiol 2021 Sep-Oct;68:34-36. Epub 2021 Jul 16.

Section of Electrophysiology, University of Michigan, MI, USA.

Pacing artifacts on ECG are commonly encountered in clinical practice. We present a case of an external interference from a chronic retained abdominal generator leading to an ECG manifestation of atria lead malfunction. Careful attention to history and physical examination can identify sources of external pacemaker artifact. Read More

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October 2021