628 results match your criteria Pacemaker Malfunction


Leadless pacing. Going for the jugular.

Pacing Clin Electrophysiol 2019 Jan 17. Epub 2019 Jan 17.

Department of Cardiology, Haga Teaching Hospital, Els Borst-Eilersplein 275, 2545AA, 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 is lacking. Read More

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http://dx.doi.org/10.1111/pace.13607DOI Listing
January 2019
2 Reads

Tachycardia with alternating pacemaker spikes: Is it pacemaker malfunction?

J Electrocardiol 2018 Dec 18;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
8 Reads

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

J Interv Card Electrophysiol 2019 Jan 3. 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
January 2019
1 Read

Dizziness spells: Should one suspect the pacemaker?

Am J Emerg Med 2018 Dec 11. 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
December 2018
1 Read

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

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
1 Read

Electrical Stun Gun and Modern Implantable Cardiac Stimulators.

Health Phys 2019 Jan;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
3 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
11 Reads

Impact of transvenous cardiac implantable electronic devices in chronic hemodialysis patients: a single-center, observational comparative study.

BMC Nephrol 2018 Oct 20;19(1):281. Epub 2018 Oct 20.

Division of Vascular Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Seoul, 05505, Republic of Korea.

Background: We investigated the impact of a transvenous cardiac implantable electronic device (CIED) placement on outcomes and arteriovenous vascular access (VA) patency among chronic hemodialysis patients.

Methods: This is a single-center, observational comparative study between chronic hemodialysis patients with ipsilateral and contralateral CIED and VA. Forty-two consecutive patients who underwent both CIED placement and upper-extremity VA for hemodialysis, regardless of the sequence and time interval between these 2 procedures, were identified between January 2001 and December 2017. Read More

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https://bmcnephrol.biomedcentral.com/articles/10.1186/s12882
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http://dx.doi.org/10.1186/s12882-018-1095-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195973PMC
October 2018
10 Reads

Pacemaker malfunction after acute myocardial infarction in a patient with wrap-around left anterior descending artery supplying the right ventricular apex.

J Cardiol Cases 2018 Jul 4;18(1):9-12. Epub 2018 Apr 4.

Division of Cardiovascular Medicine, National Center for Global Health and Medicine, Tokyo, Japan.

A 50-year-old man with a dual-chamber pacemaker was admitted to our hospital complaining of chest pain. Anterior ST segment elevation myocardial infarction (STEMI) was diagnosed. Emergency coronary angiography revealed total occlusion of the proximal left anterior descending artery (LAD), and primary percutaneous coronary intervention was performed. Read More

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http://dx.doi.org/10.1016/j.jccase.2018.03.001DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6149590PMC
July 2018
3 Reads

Incorrect Holter-ECG analysis caused by the pacemaker delivering small high-frequency currents for thoracic impedance measurement.

J Cardiol Cases 2017 Dec 12;16(6):219-222. Epub 2017 Sep 12.

Department of Cardiology, Kido General Hospital, Niigata, Japan.

In an 86-year-old woman who had been treated for sick sinus syndrome, the small high-frequency current delivered by pacemaker in order to measure the minutes ventilation for utilizing the rate-response mode was transiently over-sensed on the Holter electrocardiogram. Although her pacing system was working appropriately, the numbers of the paced beats on the automatic Holter analysis were undercounted (from >60% to <5%) during the over-sensing periods because these currents were recognized as multiple pacing spikes. Physicians need to pay attention to such multiple pacing spike markers, because these can be a cause of unreliable results of the Holter analysis. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S18785409173008
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http://dx.doi.org/10.1016/j.jccase.2017.08.007DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6149630PMC
December 2017
4 Reads

An interactive assistant for patients with cardiac implantable electronic devices: A study protocol of the LUCY trial.

Medicine (Baltimore) 2018 Sep;97(39):e12556

1st Department of Cardiology, Medical University of Warsaw, Warsaw, Poland.

Patients with chronic heart failure (CHF) and reduced left ventricle ejection fraction benefit from cardiac resynchronization therapy (CRT) and implantable cardioverter defibrillator (ICD). However, increasing numbers of patient with CRT and ICD devices produce overload of cardiology centers where patients are admitted to ambulatory visits. This study aims to find multivariate model predicting the requirement for ambulatory follow-up of cardiac implantable electronic devices (CIEDs). Read More

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http://dx.doi.org/10.1097/MD.0000000000012556DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6181569PMC
September 2018
2 Reads
5.723 Impact Factor

Worldwide pacemaker and defibrillator reuse: Systematic review and meta-analysis of contemporary trials.

Pacing Clin Electrophysiol 2018 11 19;41(11):1500-1507. Epub 2018 Sep 19.

Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

Background: Patients go without pacemaker, defibrillator, and cardiac resynchronization therapies (devices) each year due to the prohibitive costs of devices.

Objective: We sought to examine data available from studies regarding contemporary risks of reused devices in comparison with new devices.

Methods: We searched online indexing sites to identify recent studies. Read More

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http://dx.doi.org/10.1111/pace.13488DOI Listing
November 2018
15 Reads

Surgical Outcomes of Permanent Epicardial Pacing in Neonates and Young Infants Less Than 1 Year of Age.

Heart Lung Circ 2018 Jul 17. Epub 2018 Jul 17.

Department of Thoracic and Cardiovascular Surgery, Seoul National University Children's Hospital, Seoul, Republic of Korea. Electronic address:

Background: Open surgical implantation of epicardial leads in neonates and infants remains the first option of treatment. We reviewed the long-term outcomes after epicardial pacemaker implantation in neonates and infants.

Methods: From 1989 to 2016, 48 patients (16 neonates) underwent pacemaker implantation within the first year of life. Read More

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http://dx.doi.org/10.1016/j.hlc.2018.06.1039DOI Listing
July 2018
3 Reads

Safety considerations for performing robotic surgery in the presence of a permanent pacemaker.

J Perioper Pract 2018 Jul 31:1750458918790693. Epub 2018 Jul 31.

New Cross Hospital, Wolverhampton, UK.

With increasing experience, more complex patients are undergoing robotic surgery but the patient safety during these procedures remains paramount. Being a relatively recent technique of minimal access surgery, the safety and feasibility of robotic surgery is still under scrutiny. We recently performed two robotic procedures in patients who have permanent cardiac pacemaker. Read More

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http://dx.doi.org/10.1177/1750458918790693DOI Listing
July 2018
2 Reads

Interpreting the Normal Pacemaker Electrocardiograph.

Authors:
Harry G Mond

Heart Lung Circ 2019 Feb 18;28(2):223-236. Epub 2018 Jul 18.

Department of Cardiology, The Royal Melbourne Hospital, and University of Melbourne, Melbourne, Vic, Australia; Cardioscan Pty Ltd, Melbourne, Vic, Australia. Electronic address:

Modern cardiac pacing systems have sophisticated software to document, evaluate and record intrinsic and paced rhythms as well as correct pacing abnormalities and rhythm disturbances by applying algorithms, which are generally company specific. To the cardiologist and technologist, these algorithms may be difficult to interpret on both the 12-lead electrocardiograph (ECG) and Holter ambulatory monitoring recordings, which are usually performed because of patient symptoms or physician concern. The tracings may appear bewildering and mimic pacemaker malfunction, thus leading to unnecessary tests or even surgery. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S14439506183179
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http://dx.doi.org/10.1016/j.hlc.2018.06.1046DOI Listing
February 2019
15 Reads

What is the real recurrence rate after cryoballoon-based pulmonary vein isolation? Lessons from rhythm follow-up based on implanted cardiac devices with continuous atrial monitoring.

Heart Rhythm 2018 Dec 18;15(12):1844-1850. Epub 2018 Aug 18.

Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany.

Background: Second-generation cryoballoon (CB2)-based pulmonary vein isolation (PVI) has demonstrated encouraging clinical results for the treatment of paroxysmal atrial fibrillation (AF) and persistent AF. However, rhythm follow-up after PVI is mainly based on Holter electrocardiography of limited duration.

Objective: The purpose of this study was to assess the real AF burden following CB2-based PVI in patients with implanted cardiac devices. Read More

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http://dx.doi.org/10.1016/j.hrthm.2018.07.016DOI Listing
December 2018
11 Reads
5.080 Impact Factor

Lymphoma in autopsy cases.

Forensic Sci Med Pathol 2018 Sep 23;14(3):327-331. Epub 2018 Jun 23.

Department of Pathology and Laboratory Medicine, University of Florida College of Medicine - Jacksonville, 655 West 8th Street, Box C-506, Jacksonville, FL, 32209-6511, USA.

Lymphoproliferative disorders cause significant morbidity and mortality, either related to the disease itself or therapy complications. Some cases of lymphoma may have vague clinical presentation, especially in the absence of lymphadenopathy, and a clinical work up may not be conclusive. Our study focuses on autopsy cases of lymphoma patients, emphasizing clinically unsuspected cases. Read More

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http://dx.doi.org/10.1007/s12024-018-9996-4DOI Listing
September 2018
16 Reads

Unique clinical presentation and management of lead-stent abrasion.

HeartRhythm Case Rep 2018 Feb 11;4(2):54-57. Epub 2017 Dec 11.

Division of Cardiology, Department of Medicine, Weill Cornell Medicine, New York, New York.

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http://dx.doi.org/10.1016/j.hrcr.2017.10.006DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5988467PMC
February 2018
7 Reads

Twiddler's Syndrome: Case Report and Literature Review.

Heart Views 2018 Jan-Mar;19(1):27-31

Cardiosurgery Clinic, University Clinical Center Sarajevo, Sarajevo, Bosnia and Herzegovina.

Twiddler's syndrome is a rare complication after pacemaker implantation usually caused by patient manipulation with generator. We describe a case of 70-year-old female patient with pacemaker who was admitted to the neurological clinic with syncope and suspicion for neurological disease. After neurological diagnostic tests that were negative and consultation with a cardiologist, Twiddler's syndrome was diagnosed. Read More

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http://dx.doi.org/10.4103/HEARTVIEWS.HEARTVIEWS_89_17DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5965012PMC
June 2018
8 Reads

Living with a pacemaker: patient-reported outcome of a pacemaker system.

BMC Cardiovasc Disord 2018 06 4;18(1):110. Epub 2018 Jun 4.

Centre for Research and Development, Uppsala University/Region Gävleborg, Gävle, Sweden.

Background: The aim of this study was to assess among pacemaker patients their overall satisfaction with the pacemaker system, pain, soreness/discomfort, cosmetic results, restrictions due to impaired movement of the shoulder/arm/chest, related sleep disturbances, and concern about possible device malfunction.

Methods: The seven-item questionnaire was mailed to patients from a single center who had a pacemaker implant or replacement between 2006 and 2016. A higher score indicated worse outcome on a visual analog scale (VAS) of 0-100 mm. Read More

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http://dx.doi.org/10.1186/s12872-018-0849-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5987385PMC
June 2018
5 Reads

Role of Surface Electrocardiograms in Patients with Cardiac Implantable Electronic Devices.

Card Electrophysiol Clin 2018 06;10(2):233-255

Heart and Vessels Department, University of Florence, Largo Brambilla, 3, Florence 50134, Italy; Cardiovascular Department, IRCCS, Multimedica, Via Milanese 300, 20099 Sesto San Giovanni, Italy.

Surface electrocardiograms, both resting 12-lead electrocardiographs and ambulatory electrocardiograph monitoring, play an essential role in establishing indications for cardiac implantable electronic devices (pacemakers, cardiac implantable defibrillators, and cardiac resynchronization therapies), and in the evaluation of patients already implanted. Current devices have prolonged memory capabilities (defined as Holter functions) and remote monitoring functions, to evaluate the electrical properties and the automatic detection of arrhythmias. Nonetheless, surface electrocardiography remains the critical tool to detect device malfunction, evaluate programming and function, verify the automatic arrhythmia analysis and the delivered electric therapy, and prevent inappropriate intervention. Read More

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http://dx.doi.org/10.1016/j.ccep.2018.02.012DOI Listing
June 2018
3 Reads

A novel MR-compatible sensor to assess active medical device safety: stimulation monitoring, rectified radio frequency pulses, and gradient-induced voltage measurements.

MAGMA 2018 Oct 30;31(5):677-688. Epub 2018 Mar 30.

IADI, U947, INSERM, Université de Lorraine, Nancy, France.

Purpose: To evaluate the function of an active implantable medical device (AIMD) during magnetic resonance imaging (MRI) scans. The induced voltages caused by the switching of magnetic field gradients and rectified radio frequency (RF) pulse were measured, along with the AIMD stimulations.

Materials And Methods: An MRI-compatible voltage probe with a bandwidth of 0-40 kHz was designed. Read More

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http://dx.doi.org/10.1007/s10334-018-0682-zDOI Listing
October 2018
5 Reads

Placement issues of hemodialysis catheters with pre-existing central lines and catheters.

J Vasc Access 2018 Jul 15;19(4):366-369. Epub 2018 Mar 15.

Vascular Institute of New York, Brooklyn, NY, USA.

Objective: It has been a widely accepted practice that a previous placed pacemaker, automatic implantable cardioverter defibrillators, or central line can be a contraindication to placing a hemodialysis catheter in the ipsilateral jugular vein. Fear of dislodging pacing wires, tunneling close to the battery site or causing venous obstruction has been a concern for surgeons and interventionalists alike. We suggest that this phobia may be unfounded. Read More

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http://dx.doi.org/10.1177/1129729818757964DOI Listing
July 2018
6 Reads

Battery Malfunction of a Leadless Cardiac Pacemaker: Worrisome Single-Center Experience.

Circulation 2018 May 14;137(22):2408-2410. Epub 2018 Mar 14.

Department of Electrophysiology, Helios Heart Center, University of Leipzig, Germany.

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http://dx.doi.org/10.1161/CIRCULATIONAHA.117.033371DOI Listing
May 2018
4 Reads

Device complications with addition of defibrillation to cardiac resynchronisation therapy for primary prevention.

Heart 2018 09 14;104(18):1529-1535. Epub 2018 Mar 14.

Cardiovascular Epidemiology, Paris Cardiovascular Research Center, Paris, France.

Objective: In patients indicated for cardiac resynchronisation therapy (CRT), the choice between a CRT-pacemaker (CRT-P) versus defibrillator (CRT-D) remains controversial and indications in this setting have not been well delineated. Apart from inappropriate therapies, which are inherent to the presence of a defibrillator, whether adding defibrillator to CRT in the primary prevention setting impacts risk of other acute and late device-related complications has not been well studied and may bear relevance for device selection.

Methods: Observational multicentre European cohort study of 3008 consecutive patients with ischaemic or non-ischaemic dilated cardiomyopathy and no history of sustained ventricular arrhythmias, undergoing CRT implantation with (CRT-D, n=1785) or without (CRT-P, n=1223) defibrillator. Read More

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http://dx.doi.org/10.1136/heartjnl-2017-312546DOI Listing
September 2018
34 Reads

Cause of the "power-on reset" phenomenon other than electric magnetic interference in a patient with a pacemaker.

Indian Pacing Electrophysiol J 2018 Jul - Aug;18(4):150-151. Epub 2018 Feb 22.

Department of Cardiology, Cardiovascular Center, Ogikubo Hospital, Tokyo, Japan.

A 67-year old male with a dual-chamber pacemaker visited for a regular check-up. An unfamiliar message emerged on the display just after placing the programmer wand. We could recognize that the pacemaker had already been in the safe back-up mode of DDI, and the programmer prompted a re-initialization request. Read More

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http://dx.doi.org/10.1016/j.ipej.2018.02.005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6090071PMC
February 2018
4 Reads

Leadless pacemaker implantation and concurrent atrioventricular junction ablation in patients with atrial fibrillation.

Pacing Clin Electrophysiol 2018 05 16;41(5):504-510. Epub 2018 Apr 16.

Division of Cardiovascular Medicine, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA.

Background: Atrioventricular junctional (AVJ) ablation and pacemaker implantation are indicated when pharmacotherapy fails to achieve adequate rate control in atrial fibrillation (AF). The purpose of our study is to assess the feasibility and safety of concurrent Micra leadless transcatheter pacemaker implantation and AVJ ablation.

Methods: We retrospectively assessed patients who underwent Micra implantation and concurrent AVJ ablation at three institutions between August 2014 and March 2016. Read More

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http://dx.doi.org/10.1111/pace.13312DOI Listing
May 2018
14 Reads

Radiotherapy for Patients with Cardiovascular Implantable Electronic Devices: A Review.

Can J Cardiol 2018 03 6;34(3):244-251. Epub 2017 Dec 6.

Heart Rhythm Service, Kingston General Hospital, Queen's University, Kingston, Ontario, Canada. Electronic address:

Because cardiovascular implantable electronic devices are increasingly indicated in older patients, and the burden of cancer is rising with the growth and aging of the world population, the management of patients with cardiac devices who require radiotherapy for cancer treatment is a timely concern. Device malfunctions might occur in as high as 3% of radiotherapy courses, posing a substantial issue in clinical practice. A nonsystematic comprehensive review was undertaken. Read More

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http://dx.doi.org/10.1016/j.cjca.2017.11.023DOI Listing
March 2018
3 Reads

A Case of Possible Pacemaker Malfunction: The Pacemaker That Did Not Make Sense.

JAMA Intern Med 2018 Mar;178(3):408-410

Division of Cardiology, Department of Medicine, University of California San Francisco.

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http://archinte.jamanetwork.com/article.aspx?doi=10.1001/jam
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http://dx.doi.org/10.1001/jamainternmed.2017.8303DOI Listing
March 2018
4 Reads

Oversensing of transthoracic excitation stimuli in contemporary pacemakers.

Pacing Clin Electrophysiol 2018 02 24;41(2):161-166. Epub 2018 Jan 24.

Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA.

Background: Transthoracic impedance measurements (TIM) is primarily used for minute ventilation rate adaptive sensors in pacemakers. With elevated impedance, the TIM electrical signal itself is oversensed, causing device malfunction.

Objective: We report an increased incidence of TIM oversensing. Read More

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http://dx.doi.org/10.1111/pace.13269DOI Listing
February 2018
9 Reads

Predictors and outcomes of patients requiring repeat transvenous lead extraction of pacemaker and defibrillator leads.

Pacing Clin Electrophysiol 2018 02 24;41(2):155-160. Epub 2018 Jan 24.

Department of Cardiology, Guy's and St Thomas' Hospital Trust, London, SE1 7EH, UK.

Background: A proportion of patients who undergo an initial lead extraction procedure will require a second, repeat extraction. Data regarding this clinical entity are scarce and neither the predisposing risk factors for, nor outcomes from, these procedures have been described previously. We sought to determine the incidence, risk factors, and outcomes of repeat lead extraction. Read More

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http://dx.doi.org/10.1111/pace.13266DOI Listing
February 2018
11 Reads

Use of an antimicrobial pouch/envelope in the treatment of Twiddler's syndrome.

Pacing Clin Electrophysiol 2018 02 16;41(2):136-142. Epub 2018 Jan 16.

University of Tennessee at Knoxville, Cardiology, Knoxville, TN, USA.

Background: "Twiddler's syndrome" occurs when a patient consciously or subconsciously manipulates their pacemaker/defibrillator pulse generator, often resulting in lead dislodgement and device system malfunction. Once dislodgement has occurred, corrective measures include resecuring the system to the pectoralis fascia with redundant anchoring sutures. Unfortunately, patients with Twiddler's syndrome tend to have a high rate of recurrence. Read More

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http://dx.doi.org/10.1111/pace.13259DOI Listing
February 2018
5 Reads

Pacemaker malfunction risks within the electromagnetically rich hospital environment.

Hellenic J Cardiol 2018 Jul - Aug;59(4):247-248. Epub 2017 Nov 14.

Cardiac Department, Sismanogleio General Hospital, Athens, Greece. Electronic address:

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https://linkinghub.elsevier.com/retrieve/pii/S11099666173039
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http://dx.doi.org/10.1016/j.hjc.2017.11.009DOI Listing
November 2017
3 Reads

On the use of bolus for pacemaker dose measurement and reduction in radiation therapy.

J Appl Clin Med Phys 2018 Jan 20;19(1):125-131. Epub 2017 Nov 20.

Department of Therapeutic Radiology, Yale University School of Medicine, Yale-New Haven Hospital, New Haven, CT, USA.

Special attention is required in planning and administering radiation therapy to patients with cardiac implantable electronic devices (CIEDs), such as pacemaker and defibrillator. The range of dose to CIEDs that can induce malfunction is large among CIEDs. Clinically significant defects have been reported at dose as low as 0. Read More

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http://dx.doi.org/10.1002/acm2.12229DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5768029PMC
January 2018
7 Reads

Next-generation pacemakers: from small devices to biological pacemakers.

Nat Rev Cardiol 2018 Mar 16;15(3):139-150. Epub 2017 Nov 16.

Cedars-Sinai Heart Institute, 8700 Beverly Boulevard, Los Angeles, California 90048, USA.

Electrogenesis in the heart begins in the sinoatrial node and proceeds down the conduction system to originate the heartbeat. Conduction system disorders lead to slow heart rates that are insufficient to support the circulation, necessitating implantation of electronic pacemakers. The typical electronic pacemaker consists of a subcutaneous generator and battery module attached to one or more endocardial leads. Read More

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http://dx.doi.org/10.1038/nrcardio.2017.165DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6261336PMC
March 2018
3 Reads

Implantable loop recorders in the real world: a study of two Canadian centers.

J Interv Card Electrophysiol 2017 Nov 2;50(2):179-185. Epub 2017 Nov 2.

Department of Cardiology, Kingston General Hospital, Queen's University, Kingston, Ontario, Canada.

Purpose: Implantable loop recorders (ILRs) are increasingly being used for ambulatory electrocardiography. We sought to evaluate ILR indications, diagnostic yield, ILR-guided interventions, and complications in two Canadian centers.

Methods: This was a retrospective study using electronic medical records to identify ILR implants at Queen's University and the University of Manitoba. Read More

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http://dx.doi.org/10.1007/s10840-017-0294-yDOI Listing
November 2017
11 Reads

A complex case of pacemaker lead endocarditis.

Rev Port Cardiol 2017 Oct 14;36(10):775.e1-775.e5. Epub 2017 Oct 14.

Serviço de Cardiologia, Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal.

Pacemaker lead endocarditis is an uncommon complication after pacemaker implantation, but is associated with high rates of morbidity and mortality. The authors describe the case of a 68-year-old woman with a double-chamber pacemaker since 2007, admitted to an internal medicine department for spondylodiscitis and Staphylococcus aureus bacteremia. During hospitalization, she had an episode of syncope; the 12-lead electrocardiogram showed pacemaker malfunction with ventricular undersensing and loss of capture. Read More

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http://dx.doi.org/10.1016/j.repc.2016.11.010DOI Listing
October 2017
7 Reads

Key Lessons from the ELECTRa Registry in the Modern Era of Transvenous Lead Extraction.

Arrhythm Electrophysiol Rev 2017 Aug;6(3):111-113

Division of Cardiology, Fondazione Cardiocentro Ticino, Lugano, Switzerland.

The implantation rate of cardiac electronic devices has grown over the past decades. The number of treated patients has increased in parallel with the complexity of the patient population treated, being older, frailer, having more complex devices (in particular, cardiac resynchronisation therapy) and presenting with a greater comorbidity burden. As a consequence, there is a rising number of related implanted system complications, including malfunction and infection. Read More

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https://www.aerjournal.com/articles/key-lessons-electra-regi
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http://dx.doi.org/10.15420/aer.2017.25.1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5610740PMC
August 2017
4 Reads

AAV-mediated conversion of human pluripotent stem cell-derived pacemaker.

Biochem Biophys Res Commun 2017 12 6;494(1-2):346-351. Epub 2017 Oct 6.

Ming Wai Lau Centre for Reparative Medicine, Karolinska Institutet, Stockholm 17177, Sweden; Dr. Li Dak-Sum Research Centre, The University of Hong Kong-Karolinska Institutet Collaboration in Regenerative Medicine, The University of Hong Kong, Pokfulam, Hong Kong. Electronic address:

Malfunction of nodal pacemaker (Pm) cardiomyocytes (CMs) due to diseases or aging leads to rhythm generation disorders, necessitating electronic Pm implantation. We functionally reprogrammed human pluripotent stem cell (hPSC) derived-ventricular (V) CMs into -PmCMs via recombinant adeno-associated virus serotype 9 (rAAV9)-mediated overexpression of engineered HCN1 channel (HCN1ΔΔΔ) whose S3-S4 linker has been strategically deleted by design to promote cardiac pacemaking. rAAV9-HCN1ΔΔΔ-reprogrammed hPSC-PmCMs converted from -VCMs showed automaticity and action potential parameters typical of native nodal PmCMs. Read More

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http://dx.doi.org/10.1016/j.bbrc.2017.10.023DOI Listing
December 2017
8 Reads

Anesthetic Management of Laser Lead Extraction for Cardiovascular Implantable Electronic Devices.

Semin Cardiothorac Vasc Anesth 2017 Dec 21;21(4):302-311. Epub 2017 Sep 21.

2 Texas Heart Institute, Houston, TX, USA.

Cardiovascular implantable electronic devices (CIEDs) play a significant role in the modern management of cardiovascular disease. CIEDs include implantable pacemakers (PMs), implantable cardioverter-defibrillators (ICDs), and cardiac resynchronization therapy (CRT) devices. These devices improve the quality of life of their recipients and help reduce the incidence of sudden cardiac death. Read More

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http://dx.doi.org/10.1177/1089253217728581DOI Listing
December 2017
15 Reads

Transvenous lead extraction at the time of cardiac implantable electronic device upgrade: Complexity, safety, and outcomes.

Heart Rhythm 2017 12 23;14(12):1807-1811. Epub 2017 Aug 23.

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

Background: The practice of lead abandonment at the time of cardiac implantable electronic device upgrade remains a controversial topic but is affecting an increasing number of patients. Inherent risks include high-risk extractions of redundant leads when extraction is required at a later date.

Objectives: We aimed to report our experience with transvenous lead extraction (TLE) at the time of device upgrade. Read More

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http://dx.doi.org/10.1016/j.hrthm.2017.08.019DOI Listing
December 2017
60 Reads

[Device-based remote monitoring : Current evidence].

Herzschrittmacherther Elektrophysiol 2017 Sep 15;28(3):268-278. Epub 2017 Aug 15.

Rhythmologie und Elektrophysiologie, Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Carl-Neuberg-Str. 1, 30625, Hannover, Deutschland.

Telemedicine is increasingly used in clinical cardiology. It offers early detection of arrhythmias, technical device follow-up and support of heart failure management. Regarding technical device follow-up, remote monitoring significantly reduces usage of the health care system. Read More

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http://link.springer.com/10.1007/s00399-017-0521-3
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http://dx.doi.org/10.1007/s00399-017-0521-3DOI Listing
September 2017
3 Reads

Possible Device Malfunction in a Dual-Chamber Pacemaker.

JAMA Intern Med 2017 09;177(9):1371-1372

San Antonio Military Medical Center, San Antonio, Texas.

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http://dx.doi.org/10.1001/jamainternmed.2017.2925DOI Listing
September 2017
4 Reads

A worldwide experience of the management of battery failures and chronic device retrieval of the Nanostim leadless pacemaker.

Heart Rhythm 2017 12 10;14(12):1756-1763. Epub 2017 Jul 10.

Mount Sinai Medical Center, New York, New York.

Background: The Nanostim leadless pacemaker (LP) met the primary endpoints in an investigational device exemption trial, and was shown to be fully retrievable percutaneously. In October 2016, St Jude Medical issued a worldwide alert of a battery malfunction that caused lost pacing output and LP communication.

Objective: To report the battery failure mechanism and incidence and the worldwide patient management, including device retrieval experiences. Read More

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http://dx.doi.org/10.1016/j.hrthm.2017.07.004DOI Listing
December 2017
22 Reads

[When the patient calls the SAMU because his pacemaker is making "beep-beep". Study on physicians' knowledge on pacemaker sound alarm].

Ann Cardiol Angeiol (Paris) 2018 Feb 3;67(1):58-60. Epub 2017 Jul 3.

SAMU 93, UF recherche-enseignement-qualité, université Paris 13, Sorbonne Cité, EA 3509, hôpital Avicenne, 125, rue de Stalingrad, 93009 Bobigny, France.

Introduction: More than 60,000 pacemakers are inserted every year in France. This number has been steadily increasing for a decade. Miscellaneous incidents can lead patients with pacemakers or their relatives to contact emergency services. Read More

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http://dx.doi.org/10.1016/j.ancard.2017.06.003DOI Listing
February 2018
6 Reads

A case of pacemaker "malfunction". Should I intervene?

J Electrocardiol 2017 Nov - Dec;50(6):939-940. Epub 2017 Jun 8.

Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, 40 Ruskin Ave, Ottawa, Ontario K1Y 4W7, Canada.

A 53year old lady was noted to have persistent bradycardia in the recovery unit shortly after a dual chamber permanent pacemaker (PPM) was implanted. The patient was asymptomatic. The pacemaker was implanted for symptomatic intermittent complete heart block. Read More

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http://dx.doi.org/10.1016/j.jelectrocard.2017.06.017DOI Listing
August 2018
13 Reads

Syncope in a patient with a dual-chamber pacemaker: What is the possible mechanism?

J Arrhythm 2017 Jun 7;33(3):240-241. Epub 2016 Oct 7.

Atatürk University Faculty of Medicine, Department of Cardiology, Erzurum 25100, Turkey.

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http://doi.wiley.com/10.1016/j.joa.2016.09.002
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http://dx.doi.org/10.1016/j.joa.2016.09.002DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459335PMC
June 2017
5 Reads

Inhibition of left ventricular stimulation due to left ventricular lead failure and the left ventricular T-wave protection algorithm in patient with cardiac resynchronization therapy and pacemaker dependency.

Ann Noninvasive Electrocardiol 2018 Jan 8;23(1). Epub 2017 Jun 8.

Department of Electrocardiology, The John Paul II Hospital, Kraków, Poland.

The electrocardiogram (ECG) interpretation in patients with cardiac resynchronization therapy (CRT) is often a perplexing problem. The difficulty in the device evaluation increases in the presence of unfamiliar timing cycles and a lead dysfunction. Authors describe a special function of a Biotronik CRT devices called the left ventricle T-wave protection (LVTP), and demonstrate its behavior in a patient with left ventricular (LV) lead failure. Read More

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http://dx.doi.org/10.1111/anec.12473DOI Listing
January 2018
45 Reads

A clinical example of extreme dose exposure for an implanted cardioverter-defibrillator : Beyond the DEGRO guidelines.

Strahlenther Onkol 2017 Sep 31;193(9):756-760. Epub 2017 May 31.

Department of Radiation Oncology, University Hospital, Johann Wolfgang Goethe University Frankfurt, Theodor Stern Kai 7, 60590, Frankfurt, Germany.

Introduction: Considering that the number of malignant diseases in patients over 65 years of age is increasing, it often occurs that patients who carry a cardiac implanted electronic device must undergo radiotherapy. Ionizing radiation can disturb the function of the implantable cardioverter-defibrillator (ICD). As a result of this, an update of the DEGRO/DKG guidelines for radiotherapy of this patient group has been published. Read More

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http://dx.doi.org/10.1007/s00066-017-1152-7DOI Listing
September 2017
84 Reads