671 results match your criteria Pacemaker Malfunction


A Cautionary Tale on Atrial Capture Management, Biventricular Pacing, and Recurrent Asystole.

J Innov Card Rhythm Manag 2019 Oct 15;10(10):3848-3852. Epub 2019 Oct 15.

Division of Pediatric Cardiology, Department of Pediatrics, University of Louisville, Louisville, KY, USA.

Capture management algorithms in current cardiac implantable electronic devices (CIEDs) can enhance device performance and battery longevity. Although generally safe, these algorithms have on rare occasions been implicated in the onset of significant complications, especially in pacemaker-dependent patients. CIEDs implanted in patients with postoperative congenital heart disease (CHD) often require epicardial pacing leads rather than transvenous leads; unfortunately, epicardial leads can experience higher rates of malfunction. Read More

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http://dx.doi.org/10.19102/icrm.2019.101001DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252737PMC
October 2019

Radiotherapy is safe in patients with implantable cardiac devices. Analysis of a systematic interrogation follow-up.

Clin Transl Oncol 2020 May 17. Epub 2020 May 17.

Department of Radiation Therapy, Complejo Hospitalario Universitario de Albacete (CHUA), C/ Hnos Falcó 37, 02006, Albacete, Spain.

Introduction: The number of patients who have a cardiac implantable electronic device (CIEDs) that undergo a course of radiotherapy is increasing due to the ageing population. The majority of clinical studies only evaluate any CIED malfunction at the end of a course of irradiation or in a case of there being symptoms of possible malfunction. As a result, little data has been collected on CIED status acquired during an active course of irradiation. Read More

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http://dx.doi.org/10.1007/s12094-020-02374-yDOI Listing

The electrocardiographic interpretation of pacemaker algorithms enabling minimal ventricular pacing.

Authors:
Harry G Mond

Heart Rhythm 2020 May 12. Epub 2020 May 12.

Department of Cardiology, The Royal Melbourne Hospital, and University of Melbourne, Parkville, Victoria, Australia; Cardioscan Pty Ltd, 293 Camberwell Rd, Victoria, 3124, Australia. Electronic address:

Cardiac pacing from the apex of the right ventricle has been shown to result in left ventricular dysfunction, atrial fibrillation and increased mortality. To counter this, one of the strategies developed, is to avoid ventricular pacing when not necessary, using programmable algorithms to minimize ventricular pacing. There are seven algorithms available from five manufacturers. Read More

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http://dx.doi.org/10.1016/j.hrthm.2020.05.012DOI Listing

The degree of translational and rotational movement of implanted pacemakers and cardioverter-defibrillators on coronal plane images in patients treated with radiotherapy for lung malignancy.

Med Dosim 2020 May 4. Epub 2020 May 4.

Department of Radiation Oncology, Carl Kirkland Cancer Center, Jackson, TN 38301, USA. Electronic address:

Malfunction of both implantable cardiac pacemakers and cardioverter-defibrillators as a result of exposure to therapeutic radiation is a known risk in radiation therapy. Although guidelines are available to minimize this risk for low energy beams, the guidelines rely on the estimated doses of ionizing radiation received by the device. Implicit in this calculation is that there is minimal day-to-day movement in the position of the device. Read More

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http://dx.doi.org/10.1016/j.meddos.2020.03.001DOI Listing

Causes of Failure to Capture in Pacemakers and Implantable Cardioverter-defibrillators.

J Innov Card Rhythm Manag 2020 Feb 15;11(2):4013-4017. Epub 2020 Feb 15.

Division of Electrophysiology, Department of Cardiovascular Medicine, University of Toledo Medical Center, Toledo, OH, USA.

The number of patients with implantable electronic cardiac devices is continuously increasing. As more pacemakers and implantable cardioverter-defibrillators (ICDs) are being placed, a basic understanding of some troubleshooting for devices is becoming essential. Loss of capture can be an emergent presentation for an unstable patient and can be encountered intermittently in hospitalized patients. Read More

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http://dx.doi.org/10.19102/icrm.2020.110207DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7192127PMC
February 2020

Erosive Twiddler's Syndrome: A Severe Case with Externalization of the Pacemaker.

Cureus 2020 Mar 29;12(3):e7458. Epub 2020 Mar 29.

Internal Medicine, Kettering Medical Center, Dayton, USA.

Implantable pacemakers have been the mainstay of therapy for patients with severely decreased left ventricular ejection fractions and recurrent arrhythmias, among other cardiac pathology. Twiddler's syndrome (TS) is an uncommon but potentially life-threatening complication of pacemaker therapy, defined as pacemaker malfunction in the setting of device lead dislodgment due to physical manipulation. Traditionally, there are three distinct TS variants (reeling, ratchet and coiling). Read More

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http://dx.doi.org/10.7759/cureus.7458DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7187994PMC

Transvenous lead extraction: Efficacy and safety of the procedure in octogenarian patients.

Pacing Clin Electrophysiol 2020 Apr 3;43(4):382-387. Epub 2020 Apr 3.

Cardiology Department, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy.

Background: Managing elderly patients with infection or malfunction deriving from a cardiac implantable electronic device (CIED) may be challenging. The aim of this study was to evaluate safety and efficacy of mechanical transvenous lead extraction (TLE) in elderly patients.

Methods: Patients who had undergone TLE in single tertiary referral center were divided in two groups (group 1: ≥ 80 years; group 2: < 80 years) and their acute and chronic outcomes were compared. Read More

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http://dx.doi.org/10.1111/pace.13896DOI Listing

[Appropriate procedure for pacemaker and ICD malfunction].

Herzschrittmacherther Elektrophysiol 2020 Mar 7;31(1):64-72. Epub 2020 Feb 7.

Gemeinschaftspraxis für Kardiologie und Kardiochirurgie, Wuppertal, Deutschland.

Malfunctions in implanted pacemaker and defibrillator systems can affect all components of the device (battery, capacitor, central processing unit (CPU), connector, soldering points, electrodes). The resulting problems can manifest themselves as inadequate therapy, a lack of therapy despite the need for stimulation or shock release in case of ventricular tachyarrhythmia, or as an ineffective delivery of therapy. The high number of implanted pacemaker and defibrillator systems, the increased life expectancy and the technical progress of cardiac "device" therapy mean that the treating physician is confronted with increasingly complex problems in the follow-up. Read More

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http://dx.doi.org/10.1007/s00399-020-00669-9DOI Listing

A case of electrolyte disturbances leading to flecainide toxicity at normal serum levels and pacemaker malfunction.

HeartRhythm Case Rep 2019 Sep 12;5(9):448-451. Epub 2019 Jun 12.

Division of Cardiology, Loyola University Medical Center, Maywood, Illinois.

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http://dx.doi.org/10.1016/j.hrcr.2019.05.007DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6951303PMC
September 2019

High shocking and pacing impedances due to defibrillation lead calcification.

J Interv Card Electrophysiol 2019 Dec 18. Epub 2019 Dec 18.

Minneapolis Heart Institute Foundation, 920 East 28th Street, Minneapolis, MN, 55407, USA.

Purpose: We have reported the calcification of Endotak defibrillation leads that required replacement. The aim of this study was to assess calcified Endotak Reliance leads in the Food and Drug Administration Manufacturer and User Facility Device Experience (MAUDE) database and compare them to calcified Sprint Fidelis, Sprint Quattro Secure, Riata, and Durata leads in MAUDE.

Methods: We searched the MAUDE database from 2008 to 2019 for defibrillation lead calcification using the terms "calcium," "calcification," and "calcified". Read More

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http://dx.doi.org/10.1007/s10840-019-00685-xDOI Listing
December 2019

Radiotherapy-induced malfunctions of cardiac implantable electronic devices in cancer patients.

Intern Emerg Med 2019 Dec 2. Epub 2019 Dec 2.

Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Policlinico Di Modena, Via del Pozzo, 71, 41124, Modena, Italy.

The number of patients with cardiac implantable electronic devices (CIEDs) requiring radiation therapy (RT) for cancer treatment is increasing. The purpose of this study is to estimate the prevalence, possible predictors, and clinical impact of RT-related CIEDs malfunctions. We retrospectively reviewed the medical records of all pacemaker (PM)/implantable cardioverter-defibrillator (ICD) patients who underwent RT in the last 14 years. Read More

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http://dx.doi.org/10.1007/s11739-019-02240-yDOI Listing
December 2019

Outcomes of Cardiac Contractility Modulation: A Systematic Review and Meta-Analysis of Randomized Clinical Trials.

Cardiovasc Ther 2019 17;2019:9769724. Epub 2019 Jun 17.

Department of Cardiovascular Medicine, Henry Ford Hospital, Detroit, MI, USA.

Background: Cardiac contractility modulation (CCM) is a device therapy for systolic heart failure (HF) in patients with narrow QRS. We aimed to perform an updated meta-analysis of the randomized clinical trials (RCTs) to assess the efficacy and safety of CCM therapy.

Methods: We conducted a systematic review and meta-analysis of randomized clinical trials (RCTs) between January 2001 and June 2018. Read More

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http://dx.doi.org/10.1155/2019/9769724DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6739758PMC
March 2020
2.362 Impact Factor

Patients with pacemakers or defibrillators do not need to worry about e-Cars: An observational study.

Technol Health Care 2020 ;28(1):1-12

Wellington Hospital, Department of Cardiology, Wellington, New Zealand.

Background: Electric cars are increasingly used for public and private transportation and represent possible sources of electromagnetic interference (EMI). Potential implications for patients with cardiac implantable electronic devices (CIED) range from unnecessary driving restrictions to life-threatening device malfunction. This prospective, cross-sectional study was designed to assess the EMI risk of electric cars on CIED function. Read More

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http://dx.doi.org/10.3233/THC-191891DOI Listing
January 2020

A review of specialized and automated features in implantable cardiac devices.

J Cardiovasc Electrophysiol 2020 Jan 21;31(1):271-285. Epub 2019 Nov 21.

Section of Clinical Cardiac Electrophysiology, Emory University Hospital, Atlanta, Georgia.

Automated features available in cardiac implantable electronic devices continue to increase in number and complexity. These features are frequently confused with device malfunction and often result in unnecessary clinical attention. This review will serve as an update to some of the more commonly-encountered features discussed in terms of the behavior they exhibit. Read More

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http://dx.doi.org/10.1111/jce.14276DOI Listing
January 2020

Twiddler's Syndrome: An Unusual Cause of Repeated Shocks by Implantable Cardioverter-Defibrillator in an Asymptomatic Patient.

Heart Views 2019 Jul-Sep;20(3):118-121

Department of Heart and Vascular Center, Case Western Reserve University/MetroHealth Medical Center, Cleveland, OH, USA.

Twiddler's syndrome refers to malfunction of pacemaker or implantable cardioverter-defibrillator (ICD) resulting from deliberate or unintentional twisting of pulse generator in device pocket, resulting in lead dislodgment. We report a case of a 65-year-old woman with multiple ICD shocks and antitachycardia pacing events on device interrogation, while she was unaware of the ICD discharges. Twiddler's syndrome is rare and mostly occurs in obese or elderly because of loose subcutaneous tissue allowing pulse generator to rotate in its pocket. Read More

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http://dx.doi.org/10.4103/HEARTVIEWS.HEARTVIEWS_45_19DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6791089PMC
October 2019
1 Read

Management of radiotherapy patients with implanted cardiac pacemakers and defibrillators: A Report of the AAPM TG-203.

Med Phys 2019 Dec 1;46(12):e757-e788. Epub 2019 Nov 1.

Consultant, Medtronic Inc., Mounds View, MN, 55112, USA.

Managing radiotherapy patients with implanted cardiac devices (implantable cardiac pacemakers and implantable cardioverter-defibrillators) has been a great practical and procedural challenge in radiation oncology practice. Since the publication of the AAPM TG-34 in 1994, large bodies of literature and case reports have been published about different kinds of radiation effects on modern technology implantable cardiac devices and patient management before, during, and after radiotherapy. This task group report provides the framework that analyzes the potential failure modes of these devices and lays out the methodology for patient management in a comprehensive and concise way, in every step of the entire radiotherapy process. Read More

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http://dx.doi.org/10.1002/mp.13838DOI Listing
December 2019
3 Reads

Active-Scanned Protons and Carbon Ions in Cancer Treatment of Patients With Cardiac Implantable Electronic Devices: Experience of a Single Institution.

Front Oncol 2019 22;9:798. Epub 2019 Aug 22.

Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany.

Ionizing radiation was shown to be able to influence the function of cardiac implantable electronic devices (CIED's) leading to malfunctions with potentially severe consequences. Those effects presumably correlate with beam energy and neutron production. Thus, particle facilities are commonly cautious to treat patients with CIED's with particles, but substantial evidence is lacking. Read More

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http://dx.doi.org/10.3389/fonc.2019.00798DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6714545PMC
August 2019
2 Reads

Long-term performance of an atrial lead capable of accelerometer based detection of cardiac contractility in patients receiving cardiac resynchronisation therapy.

PLoS One 2019 9;14(9):e0222269. Epub 2019 Sep 9.

University Clinic of Internal Medicine III (Cardiology and Angiology), Medical University Innsbruck, Innsbruck, Austria.

Objectives: To evaluate the long-term performance of the SonRtip atrial lead.

Background: To optimize atrioventricular and interventricular timing and thereby potentially improving cardiac resynchronization therapy (CRT) responder rates, a lead integrated technology and a cardioverter/defibrillator-based algorithm measuring peak endocardial acceleration have been introduced. Long-term performance of the atrial lead (SonRtip PS55D, Sorin/MicroPort CRM, Italy) embedded with such a sensor has not been reported so far. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0222269PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6733485PMC

[A rare cause of pacemaker lead displacement: Twiddler's syndrome].

Pan Afr Med J 2019 12;33:107. Epub 2019 Jun 12.

Service de Cardiologie, Hôpital Habib Thameur, Tunis, Tunisie.

Twiddler's syndrome is a rare but potentially lethal complication of pacemaker implantation. It is usually diagnosed within 1 year after implantation. It is characterized by device malfunction caused by pacemaker lead displacement due to twisting of the box on part of the patient. Read More

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http://dx.doi.org/10.11604/pamj.2019.33.107.9051DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6711695PMC
September 2019
2 Reads

Lead Removal Without Extraction Tools: A Single-Center Experience.

Braz J Cardiovasc Surg 2019 08 27;34(4):458-463. Epub 2019 Aug 27.

Hospital de Messejana Dr. Carlos Alberto Studart Gomes Fortaleza CE Brazil Hospital de Messejana Dr. Carlos Alberto Studart Gomes, Fortaleza, CE, Brazil.

Introduction: Indications for cardiac devices have been increasing as well as the need for lead extractions as a result of infections, failed leads and device recalls. Powered laser sheaths, with a global trend towards the in-creasingly technological tools, meant to improve the procedure's outcome but have economic implications.

Objective: The aim of this study is to demonstrate the experience of a Bra-zilian center that uses simple manual traction in most lead removals per-formed annually, questioning the real need for expensive and technically challenging new devices. Read More

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http://dx.doi.org/10.21470/1678-9741-2018-0275DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6713361PMC
August 2019
1 Read

Lightning-induced pacing system malfunction: a case report.

Eur Heart J Case Rep 2019 Jun;3(2)

Medical Department, The University of Information Technology and Management, Sucharskiego 2, Rzeszów, Poland.

Background: Atmospheric electrical discharge is an extremely powerful natural phenomenon which can have dangerous and lethal effects on the human body. However, there is no evidence to indicate whether and, if so, to what extent the electric current travelling through the body can affect proper pacemaker function.

Case Summary: An 80-year-old patient admitted to emergency department after being struck by a lightning bolt while riding a bike. Read More

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http://dx.doi.org/10.1093/ehjcr/ytz092DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6601167PMC
June 2019
4 Reads

Increased Incidence of Noise in the Tendril Pacemaker Lead Detected via Remote Monitoring.

Heart Lung Circ 2019 Jun 27. Epub 2019 Jun 27.

The Alfred Hospital and Baker IDI, Melbourne, Vic, Australia.

Background: Prior studies suggest increased rates of noise on the Tendril (St Jude Medical/Abbott, St. Paul, MN, USA) pacemaker lead. We aim to assess the incidence of lead noise in the Tendril and 5076 (Medtronic PLC, Minneapolis, MN, USA) pacemaker leads in our cohort and in the process assess the utility of remote monitoring for identifying lead malfunction. Read More

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http://dx.doi.org/10.1016/j.hlc.2019.06.718DOI Listing
June 2019
2 Reads

MR safety assessment of active implantable medical devices.

Radiologe 2019 Dec;59(Suppl 1):40-45

IADI, U1254, INSERM, Université de Lorraine, CHRU de Nancy Brabois, Bâtiment Recherche (anciennement EFS), Rez-de-Chaussé, Rue du Morvan, 54511, Nancy, France.

Background: Increasing numbers of patients with active implantable medical devices (AIMDs) require magnetic resonance (MR) examinations. The manufacturers are continuing to improve the MR compatibility of their AIMDs. To this end, a variety of measurement methods and numerical simulations are used to evaluate the risks associated with magnetic resonance imaging (MRI). Read More

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http://dx.doi.org/10.1007/s00117-019-0541-6DOI Listing
December 2019
2 Reads

Pooled Analysis of the Efficacy and Safety of Video Capsule Endoscopy in Patients with Implantable Cardiac Devices.

Can J Gastroenterol Hepatol 2019 19;2019:3953807. Epub 2019 May 19.

Division of Gastroenterology & Hepatology at Staten Island University Hospital, Northwell Health, New York, USA.

Background: To date, video capsule endoscopy (VCE) is still contraindicated by the FDA and the main manufacturers of Cardiac Implantable Electronic Devices (CIED) in patients with CIED, given a theoretical electromagnetic interference and possible device malfunction.

Objectives: The objective of this study was to assess the safety profile and efficacy of VCE in patients with implantable cardiac devices through analyzing the risk of mutual interference.

Methods: A systematic review of PubMed, Web of Science, and Embase databases was conducted. Read More

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http://dx.doi.org/10.1155/2019/3953807DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6545804PMC
March 2020
8 Reads

Elevated Pacing Threshold Due to Subtotal Separation of Permanent Pacemaker Header From Generator Casing.

JACC Clin Electrophysiol 2019 06;5(6):746-749

Division of Cardiology, Weill Cornell University Medical Center, New York Presbyterian Hospital, New York, New York.

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http://dx.doi.org/10.1016/j.jacep.2019.01.018DOI Listing
June 2019
20 Reads

Transvenous Lead Extraction in Patients With Arrhythmogenic Right Ventricular Cardiomyopathy.

JACC Clin Electrophysiol 2019 06 29;5(6):665-670. Epub 2019 May 29.

Cardiac Electrophysiology and Pacing, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio. Electronic address:

Objectives: This study aimed to evaluate the effectiveness and safety of transvenous lead extraction (TLE) in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC).

Background: ARVC is an increasingly diagnosed cardiomyopathy that often requires device implantation to prevent sudden death. Little is known about TLE in this setting, which has potential challenges and risks, primarily due to right ventricular (RV) wall thinning and fragility. Read More

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http://dx.doi.org/10.1016/j.jacep.2019.05.003DOI Listing
June 2019
36 Reads

Safety and Efficacy Outcomes of Combined Leadless Pacemaker and Atrioventricular Nodal Ablation for Atrial Fibrillation Using a Single Femoral Puncture Approach.

Heart Lung Circ 2020 May 27;29(5):759-765. Epub 2019 May 27.

Department of Cardiology, Fiona Stanley Hospital, Perth, WA, Australia; GenesisCare, Perth, WA, Australia.

Background: Atrioventricular nodal (AVN) ablation with permanent pacemaker (PPM) insertion is indicated for rate control in patients with atrial fibrillation (AF) who remain unresponsive to rate or rhythm control strategies. The leadless PPM (Micra Transcatheter Pacing System [TPS], Medtronic, Minneapolis, MN, USA) has the advantage of eliminating transvenous lead and pacemaker pocket-related complications. The aim of this case series was to determine the outcomes of patients who had undergone combined Micra TPS and AVN ablation, performed via a single femoral approach. Read More

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http://dx.doi.org/10.1016/j.hlc.2019.05.100DOI Listing
May 2020
15 Reads

Assessing the safety of implantable cardioverter-defibrillator reuse-A retrospective case-control study.

Pacing Clin Electrophysiol 2019 08 30;42(8):1095-1098. Epub 2019 Jun 30.

University of Medicine and Pharmacy "Victor Babes" Timisoara, Timisoara, Romania.

Aims: The safety of pacemaker reuse has been proven by numerous studies in the last two decades. With the exception of one research paper, the safety of reuse of implantable cardioverter-defibrillators has not been properly investigated. Our aim was to establish whether resterilized implantable cardioverter-defibrillators are as safe as new devices in relation to functionality and infection rates. Read More

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http://dx.doi.org/10.1111/pace.13742DOI Listing
August 2019
7 Reads

Cardiac implantable electronic device malfunction after deceleration injury without obvious chest trauma.

HeartRhythm Case Rep 2019 May 11;5(5):285-287. Epub 2019 Feb 11.

Heart and Vascular Institute, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.

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http://dx.doi.org/10.1016/j.hrcr.2019.02.003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6522433PMC
May 2019
4 Reads

[Diaphragmatic pacemaker dysfunction and utility of diaphragmatic ultrasonography].

Rehabilitacion (Madr) 2019 Apr - Jun;53(2):116-120. Epub 2019 Mar 29.

Servicio de Anestesiología y Reanimación, Hospital General Universitario de Albacete, Albacete, España.

Patients with spinal cord injuries above the C5 vertebrae have a high risk of respiratory complications, and complete spinal cord injures can require support with mechanical ventilation. In selected patients, implantation of a diaphragmatic pacemaker offers the possibility of breathing without mechanical support and reduces respiratory complications, increasing the patient's independence. Ultrasonography is a simple and non-invasive technique that may be useful in the differential diagnosis of thoracic diseases. Read More

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http://dx.doi.org/10.1016/j.rh.2019.01.002DOI Listing
May 2020
14 Reads

Micra pacemaker implant after cardiac implantable electronic device extraction: feasibility and long-term outcomes.

Europace 2019 Aug;21(8):1229-1236

Second Department of Cardiology, Cardiothoracic and Vascular Department - University Hospital of Pisa, Via Paradisa, 2, Pisa, Italy.

Aims: We aimed at investigating the feasibility and outcome of Micra implant in patients who have previously undergone transvenous lead extraction (TLE), in comparison to naïve patients implanted with the same device.

Methods And Results: Eighty-three patients (65 males, 78.31%; 77. Read More

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http://dx.doi.org/10.1093/europace/euz160DOI Listing
August 2019
32 Reads

Cardiovascular magnetic resonance imaging in patients with cardiac implantable electronic devices: best practice and real-world experience.

Europace 2019 Aug;21(8):1220-1228

Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Strümpelstr. 39, Leipzig, Germany.

Aims: Cardiovascular magnetic resonance (CMR) imaging has long been a contraindication for patients with a cardiac implantable electronic device (CIED). Recent studies support the feasibility and safety for non-thoracic magnetic resonance imaging, but data for CMR are sparse. The aim of the current study was to determine the safety in patients with magnetic resonance (MR)-conditional or non-MR-conditional CIED and to develop a best practice approach. Read More

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http://dx.doi.org/10.1093/europace/euz112DOI Listing
August 2019
18 Reads
3.050 Impact Factor

Use of a microelectrode array to record extracellular pacemaker potentials from the gastrointestinal tracts of the ICR mouse and house musk shrew (Suncus murinus).

Cell Calcium 2019 06 9;80:175-188. Epub 2019 May 9.

School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.

Background: The rhythmic contraction and relaxation of smooth muscles in the gastrointestinal (GI) tract is governed by pacemaker electrical potentials, also termed slow waves, which are calcium currents generated by interstitial cells of Cajal (ICCs). Malfunction of pacemaker rhythms contributes to a number of clinically challenging gastrointestinal motility disorders.

Method: A microelectrode array (MEA) was used to record slow waves in vitro from intact GI tissues freshly isolated from the ICR mouse and Suncus murinus. Read More

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http://dx.doi.org/10.1016/j.ceca.2019.05.002DOI Listing
June 2019
7 Reads

CMR and CT of the Patient With Cardiac Devices: Safety, Efficacy, and Optimization Strategies.

JACC Cardiovasc Imaging 2019 May;12(5):890-903

Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. Electronic address:

Cardiac magnetic resonance (CMR) and cardiac CT (CCT) have evolved into powerful diagnostic tools in the evaluation of patients with cardiovascular diseases. However, the use of these imaging techniques poses potential safety concerns for patients with implanted cardiac devices. These concerns result from the potential for electromagnetic interaction between the device and the CMR field or CCT x-ray radiation, which could lead to device heating, malfunction, or dislocation. Read More

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http://dx.doi.org/10.1016/j.jcmg.2018.09.030DOI Listing
May 2019
2 Reads

Transvenous lead extraction with laser reduces need for femoral approach during the procedure.

PLoS One 2019 29;14(4):e0215589. Epub 2019 Apr 29.

The Leviev Heart Center, Sheba Medical Center, Ramat Gan, Israel.

Introduction: Cardiac implantable electronic device (CIED) trans venous lead extraction (TLE) is technically challenging. Whether the use of a laser sheath reduces complications and improves outcomes is still in debate. We therefore aimed at comparing our experience with and without laser in a large referral center. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0215589PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6488060PMC
January 2020
4 Reads

Atrial pacing every other beat: Is it pacemaker malfunction?

J Electrocardiol 2019 Jul - Aug;55:6-8. Epub 2019 Apr 22.

The Section of Cardiology, The Department of Medicine, Baylor College of Medicine, Houston, TX, United States of America; Texas Heart Institute, Baylor St Luke Medical Center, Houston, TX, United States of America. Electronic address:

A 45 year old female with hypertrophic obstructive cardiomyopathy and a dual chamber ICD underwent left ventricular outflow and mid ventricular cavity myectomy and mitral valve replacement. On her 5th day after surgery, ECG shows electronic atrial pacing every other complex with monomorphic wide QRS rhythm. The explanation of this ECG pattern is discussed. Read More

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http://dx.doi.org/10.1016/j.jelectrocard.2019.04.013DOI Listing
April 2019
14 Reads

Runaway pacemaker.

BMJ Case Rep 2019 Mar 31;12(3). Epub 2019 Mar 31.

Department of Cardiology, Southend University Hospital NHS Foundation Trust, Westcliff-on-Sea, UK.

Runaway pacemaker is phenomenon in which pacemaker induces ventricular tachycardia as a result of some malfunction in the device. This entity is not very common in clinical practice. Normally, the pacemaker perceives the inherent cardiac impulse and hence averting the delivery of pacemaker stimulus in susceptible period of cardiac cycle. Read More

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http://casereports.bmj.com/lookup/doi/10.1136/bcr-2018-22541
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http://dx.doi.org/10.1136/bcr-2018-225411DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6453287PMC
March 2019
28 Reads

Continuous veno-venous hemodialysis and suspected pacemaker malfunction on telemetry monitoring.

J Electrocardiol 2019 May - Jun;54:82-84. Epub 2019 Mar 23.

Division of Cardiology, University of California, San Francisco, United States of America; Division of Cardiology, Department of Medicine, Zuckerberg San Francisco General Hospital, San Francisco, United States of America.

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https://linkinghub.elsevier.com/retrieve/pii/S00220736193016
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http://dx.doi.org/10.1016/j.jelectrocard.2019.03.012DOI Listing
March 2019
23 Reads

Radiation Therapy-Induced Dysfunction in Cardiovascular Implantable Electronic Devices.

Pract Radiat Oncol 2019 Jul - Aug;9(4):266-273. Epub 2019 Mar 26.

Department of Radiation Oncology, CHU de Québec - Université Laval, Québec, Québec, Canada; Oncology Division, CHU de Québec - Université Laval Research Center, Québec, Québec, Canada.

Purpose: The prevalence of patients with cardiovascular implantable electronic devices (CIEDs) who receive radiation treatment for cancer is increasing. External beam radiation therapy (RT) can affect the electronic components. This study aimed to evaluate the incidence and predictors of new onset CIED dysfunction in patients treated with RT. Read More

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http://dx.doi.org/10.1016/j.prro.2019.03.003DOI Listing
December 2019
9 Reads

Optimizing Cardiac Resynchronization Therapy Devices in Follow-up to Improve Response Rates and Outcomes.

Card Electrophysiol Clin 2019 03 24;11(1):89-98. Epub 2018 Dec 24.

Pediatric Arrhythmia Unit, Cardiovascular Institute, Hospital Clínic, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain. Electronic address:

Although cardiac resynchronization therapy (CRT) will improve symptoms and survival in selected heart failure patients, there still remains a high percentage of CRT recipients who do not obtain benefit from the therapy. During CRT follow-up, an effort should be made to identify and to treat reversible causes of nonresponse to CRT. This effort includes optimization of medical therapy, checking for appropriate and effective biventricular pacing, and treatment of arrhythmias and other reversible causes of CRT malfunction. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S18779182183012
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http://dx.doi.org/10.1016/j.ccep.2018.11.010DOI Listing
March 2019
6 Reads

Leadless pacing: Going for the jugular.

Pacing Clin Electrophysiol 2019 Apr 25;42(4):395-399. Epub 2019 Feb 25.

Department of Cardiology, Haga Teaching Hospital, The Hague, The Netherlands.

Background: Leadless pacing is generally performed from a femoral approach. However, the femoral route is not always available. Until now, data regarding implantation using a jugular approach other than a single-case report were lacking. Read More

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http://dx.doi.org/10.1111/pace.13607DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6850455PMC
April 2019
15 Reads

Tachycardia with alternating pacemaker spikes: Is it pacemaker malfunction?

J Electrocardiol 2019 Mar - Apr;53:28-30. Epub 2018 Dec 18.

Department of Medicine, Section of Cardiology at Baylor College of Medicine and Texas Heart Institute, Baylor St. Luke's Medical Center, Houston, Texas, United States of America. Electronic address:

A 67 year old female with diabetes mellitus type 2, chronic kidney disease, ischemic cardiomyopathy, status post biventricular implantable cardioverter-defibrillator presented to the Heart Failure clinic for routine follow up with a tachycardia with alternating pacemaker spikes. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00220736183074
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http://dx.doi.org/10.1016/j.jelectrocard.2018.12.012DOI Listing
December 2018
45 Reads

Radiotherapy for patients with cardiovascular implantable electronic devices: an 11-year experience.

J Interv Card Electrophysiol 2019 Sep 3;55(3):333-341. Epub 2019 Jan 3.

Kingston Health Sciences Centre, Kingston, Ontario, K7L 2V7, Canada.

Purpose: As cardiovascular implantable electronic devices (CIEDs) are increasingly indicated in older patients, and the burden of cancer is rising with the aging population, the management of patients with CIEDs who require radiotherapy (RT) is a timely concern. The objective of the study was to evaluate the management of, and malfunctions in, patients with CIEDs undergoing RT.

Methods: A retrospective study of patients with CIEDs receiving RT at Kingston Health Sciences Center from March 2007-April 2018 was conducted. Read More

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http://link.springer.com/10.1007/s10840-018-0506-0
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http://dx.doi.org/10.1007/s10840-018-0506-0DOI Listing
September 2019
9 Reads

Dizziness spells: Should one suspect the pacemaker?

Am J Emerg Med 2019 03 11;37(3):563.e1-563.e3. Epub 2018 Dec 11.

Department of Medicine, Division of Cardiology, Maimonides Medical Center, Brooklyn, NY, USA 11219; Department of Medicine, Division of Cardiology, Coney Island Hospital, Brooklyn, NY, USA 11235.

A 52-year-old lady presented to the emergency department with recurrent episodes of dizziness and near-syncope on awakening up or swinging her left arm. Initial rhythm strips demonstrated intermittently non-conducted p waves corresponding to inappropriate pacemaker inhibition and oversensing malfunction. Pacemaker was interrogated in the ED showing ventricular lead noise and decreased lead impedance over a one year period. Read More

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http://dx.doi.org/10.1016/j.ajem.2018.12.013DOI Listing
March 2019
8 Reads

Health-Related Quality of Life and Psychological Adjustment of Children and Adolescents with Pacemakers and Implantable Cardioverter Defibrillators: A Systematic Review.

Pediatr Cardiol 2019 Jan 11;40(1):1-16. Epub 2018 Dec 11.

Department of Cardiology, Pediatric Heart Centre, University Children's Hospital Zurich, Steinwiesstr. 75, 8032, Zurich, Switzerland.

The absence of cardiac symptoms, the improved exercise tolerance and the increased life expectancy are the advantages of a successful cardiac device therapy. Nevertheless, the fact of a lifelong device dependency, the inherent possibility of device malfunction and the progression of the underlying heart disease may impact the health-related quality of life (HRQoL) and the psychological adjustment of these individuals. To date, an overview of findings on these topics is lacking. Read More

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http://dx.doi.org/10.1007/s00246-018-2038-xDOI Listing
January 2019
4 Reads

A Rare Case of Complete Fragmentation of Pacemaker Lead after a High-Velocity Theme Park Ride.

Case Rep Cardiol 2018 18;2018:4192964. Epub 2018 Oct 18.

East Tennessee State University, Johnson City, TN, USA.

Pacemaker lead fracture is one of the most common causes of pacemaker malfunction and is most frequently associated with weight lifting or chest trauma. These patients usually present with symptoms of dizziness, syncope, chest discomfort, and palpitations or less commonly with extracardiac symptoms. Diagnosis is made by ECG and careful review of chest imaging such as chest X-ray or fluoroscopy. Read More

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http://dx.doi.org/10.1155/2018/4192964DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6220749PMC
October 2018
9 Reads

Electrical Stun Gun and Modern Implantable Cardiac Stimulators.

Health Phys 2019 01;116(1):18-26

Italian National Institute of Health, Rome, Italy.

The aim of the study is to investigate systematically the possible interactions between two types of stun guns and last-generation pacemakers and implantable defibrillators. Experimental measurements were performed on pacemakers and implantable defibrillators from five leading manufacturers, considering the effect of stun gun dart positioning, sensing modality, stun gun shock duration, and defibrillation energy level. More than 300 measurements were collected. Read More

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http://dx.doi.org/10.1097/HP.0000000000000942DOI Listing
January 2019
12 Reads

Reimplantation After Lead Removal.

Card Electrophysiol Clin 2018 12 5;10(4):667-674. Epub 2018 Oct 5.

Department of Cardiac Electrophysiology and Pacing, Heart and Vascular Institute, Cleveland Clinic, 9500 Euclid Avenue J2-2, Cleveland, OH 44195, USA. Electronic address:

The number of implanted cardiovascular implantable electronic devices (CIEDs) has increased significantly in the last 30 years, which has led to an upsurge in CIED complications, such as infection and lead malfunction requiring CIED extraction. The decision-making process of CIED reimplantation requires meticulous planning that includes careful consideration of several aspects: the reason for extraction, the indication for CIED reimplantation, patients' wishes, timing of reimplantation, the need for a bridging device, and the type and location of device to be reimplanted. In this article, the authors review this decision-making process and the necessary steps to achieve optimal patient outcomes. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S18779182183004
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http://dx.doi.org/10.1016/j.ccep.2018.04.004DOI Listing
December 2018
35 Reads