43,653 results match your criteria Pacemaker Malfunction


Cardiac Involvement in Emery-Dreifuss Muscular Dystrophy and Related Management Strategies.

Int Heart J 2018 Dec 5. Epub 2018 Dec 5.

Department of Cardiovascular Medicine, Second Xiangya Hospital of Central South University.

Emery-Dreifuss muscular dystrophy (EDMD) is a group of hereditary muscular dystrophy syndrome caused by deficiency of genes encoding nuclear envelope proteins. Patients having EDMD show the triad of muscle dystrophy, joint contracture, and cardiac disease. In almost all patients, cardiac involvement is prevalent and is the most severe aspect of EDMD. Read More

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December 2018

The Evolut R and Evolut PRO Transcatheter Aortic Valve Systems.

Expert Rev Med Devices 2018 Dec 5. Epub 2018 Dec 5.

a London Health Sciences Centre , London , Ontario , Canada .

Introduction: Transcatheter aortic valves have evolved over the last 15 years. Second- and third- generation devices have considerably improved, and a range of newer devices have also been introduced with the aim of decreasing the incidence of paravalvular leak, reducing the need for permanent pacemaker implantation and minimising procedure- and device-related complications. Areas covered: In this review, we highlight the special features of the latest generation of self-expanding Evolut PRO (Medtronic, Minneapolis, Minnesota) transcatheter aortic valve system. Read More

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December 2018

SOCE and STIM1 signaling in the heart: Timing and location matter.

Cell Calcium 2018 Nov 27;77:20-28. Epub 2018 Nov 27.

Department of Medicine, Duke University School of Medicine, Durham, NC, United States.

Store operated Ca entry (SOCE) is an ancient and ubiquitous Ca signaling pathway discovered decades ago, but the function of SOCE in human physiology is only now being revealed. The relevance of this pathway to striated muscle was solidified with the description of skeletal myopathies that result from mutations in STIM1 and Orai1, the two SOCE components. Here, we consider the evidence for STIM1 and SOCE in cardiac muscle and the sinoatrial node. Read More

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November 2018

Focal atrial tachycardia ablation: Highly successful with conventional mapping.

J Interv Card Electrophysiol 2018 Dec 1. Epub 2018 Dec 1.

Cardiology Department, NIMTS Hospital, Athens, Greece.

Background/objective: Radiofrequency catheter ablation (RFCA) of focal atrial tachycardia (FAT) traditionally is guided by conventional endocardial mapping of earliest atrial activation; however, more recently electro-anatomical mapping is heralded as a more effective, albeit more expensive, tool to guide ablation. Herein we present the results of conventional mapping-guided RFCA. Apropos, we conducted a literature search of studies reporting > 10 FAT patients submitted to RFCA. Read More

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December 2018
1 Read

Pacemaker implantation after transcatheter aortic valve: why is this still happening?

J Thorac Dis 2018 Nov;10(Suppl 30):S3614-S3619

Heart Center Lucerne, Luzerner Kantonsspital, Lucerne, Switzerland.

During the past years, the industry and most transcatheter aortic valve operators have focused on reduction of paravalvular leaks rather than on the reduction of permanent pacemakers (PPM). However, since indication for transcatheter aortic valve implantation (TAVI) is moving toward a healthier and younger patient population, new PPMs may become more of an issue. Certain factors such as pre-existing conduction disorders or anatomical features cannot be changed. Read More

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November 2018

Transcatheter aortic valve replacement in patients with bicuspid aortic valves.

J Thorac Dis 2018 Nov;10(Suppl 30):S3568-S3572

Columbia University Medical Center and New York Presbyterian Hospital, New York, NY, USA.

Transcatheter aortic valve replacement (TAVR) for the treatment of severe symptomatic aortic stenosis (AS) has rapidly become the standard of care for expanding clinical indications based on the results of multiple large-scale randomized trials. Patients with bicuspid aortic valve (BAV) have been largely excluded from these trials for a variety of reasons. However, case series and registry data has shown TAVR in BAV to be a safe and efficacious alternative to surgical aortic valve replacement (SAVR) with the possible caveats of increased paravalvular regurgitation (PVR) and need for permanent pacemaker (PPM) implantation. Read More

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November 2018

Remote Monitoring of Atrial High Rate Episodes in Pacemaker Patients. The Rapid Study Design.

J Atr Fibrillation 2018 Aug 31;11(2):2075. Epub 2018 Aug 31.

Departmental Unit of Electrophysiology, Evaluation and Treatment of Arrhythmias, Monaldi Hospital, Naples, Italy.

Background: Remote Monitoring (RM) has been introduced for several years and nowadays most pacemakers are equipped with such a technology. RM can provide early detection of high atrial rate episodes (AHREs) onset and enable prompt medical intervention. However, there are still little data on the clinical reactions triggered by the AHRE detected by RM of pacemaker recipients and on their possible benefit on patients' outcome. Read More

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An Itchy Lead: First Reported Case of Ventricular Pacemaker Lead Self-Extraction.

J Atr Fibrillation 2018 Aug 31;11(2):2052. Epub 2018 Aug 31.

Division of Cardiology, Altru Health System, Grand Forks, North Dakota 58201.

We present a particularly rare case and the first ever report of a ventricular self-extraction in a 98-year old female. Our patient had a past medical history significant for severe Alzheimer's dementia, paroxysmal atrial fibrillation, and sick sinus syndrome who was admitted in clinically stable condition following the unwitnessed self-extraction the ventricular lead of her dual chamber pacemaker. This case highlights the potential risks and other clinical challenges of pacemaker and ICD placement in elderly patients and in patients with cognitive impairment. Read More

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Traumatic Fracture of Pacemaker Lead by Suture Transfixation to Pectoral Muscle.

J Invasive Cardiol 2018 Dec;30(12):E156

Max Super Specialty Hospital Saket, Press Enclave Road, Mandir Marg, Saket, New Delhi, Delhi 110017, India.

We report acute lead fracture during pacemaker implantation. Suturing the lead without the sleeve might damage the lead. To avoid this result, we suggest tying knots tightly, but not too vigorously. Read More

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December 2018

Early Change in Global Longitudinal Strain is an Independent Predictor of Left Ventricular Adverse Remodelling in Patients With Right Ventricular Apical Pacing.

Heart Lung Circ 2018 Nov 23. Epub 2018 Nov 23.

Department of Cardiology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu, People's Republic of China. Electronic address:

Background: Right ventricular apical (RVA) pacing is related to adverse left ventricular (LV) remodelling. This study assessed changes in global longitudinal strain (GLS) after permanent RVA pacing, and investigated whether GLS at one month can predict later LV ejection fraction (LVEF) decline.

Methods: The study enrolled 68 patients with normal LVEF (≥50%) who underwent dual chamber pacemaker implantation for third-degree atrioventricular block. Read More

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November 2018

Synchronous diaphragmatic contraction associated with dual-chamber transvenous pacing in a dog.

J Vet Cardiol 2018 Nov 28. Epub 2018 Nov 28.

Boston Scientific Corporation, 3 Scimed Place, Maple Grove, MN 55311, USA.

A 3-year-old, 20-kg, spayed female, mix-breed dog received a dual-chamber pacemaker for management of symptomatic 3rd-degree atrioventricular block. Synchronous diaphragmatic contraction was documented to occur with atrial pacing. Various methods to reduce the occurrence of pacemaker-related phrenic nerve stimulation are discussed. Read More

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November 2018

Transcatheter aortic valve replacement in patients with degenerative calcified rheumatic aortic stenosis: A 10-patient case series.

Int J Cardiol 2018 Nov 16. Epub 2018 Nov 16.

Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan.

Background: Transcatheter aortic valve replacement (TAVR) for patients with rheumatic heart disease (RHD) has not been well-known. This study aimed to assess characteristics and computed tomography (CT) findings of the aortic valve in old patients with RHD and to investigate the safety and efficacy in the patients who underwent TAVR.

Methods And Results: Of 352 consecutive patients with severe aortic stenosis (AS) who underwent TAVR at the Sakakibara Heart Institute between 2013 and 2016, 10 patients (2. Read More

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November 2018

Transcatheter Aortic Valve Replacement for Pure Native Aortic Valve Regurgitation: A Systematic Review.

Cardiology 2018 Dec 5;141(3):132-140. Epub 2018 Dec 5.

Department of Cardiology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou,

Background: Transcatheter aortic valve replacement (TAVR) is a recent and an effective treatment option for high- or extreme-surgical-risk patients with symptomatic severe aortic stenosis. However, pure severe native aortic valve regurgitation (NAVR) without aortic stenosis remains a contraindication to TAVR. The aim of our systemic review analysis was to evaluate TAVR in patients with pure NAVR. Read More

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December 2018
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Transcatheter Closure of Perimembranous Ventricular Septal Defects in Children using a Wire-Drifting Technique.

Clinics (Sao Paulo) 2018 Nov 29;73:e371. Epub 2018 Nov 29.

Department of Structural Heart Disease, The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi Province, China.

Objective: Explore the feasibility and safety of transcatheter closure of perimembranous ventricular septal defects using a wire-drifting technique (WT) in children.

Methods: We retrospectively analyzed 121 pediatric patients diagnosed with perimembranous ventricular septal defects who underwent interventional treatment at the First Affiliated Hospital of Xi'an Jiaotong University from Dec 2011 to Dec 2014. Based on the method used for arteriovenous loop establishment during the procedure, the patients were divided into a conventional technique (CT) group and a WT group. Read More

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November 2018
1 Read

[Removal of a catheter kinked in the radial artery by anchoring the distal part of the catheter with a needle via transcutaneous approach].

Turk Kardiyol Dern Ars 2018 Dec;46(8):710-713

VM Medicalpark Kocaeli Hastanesi, Kardiyoloji Kliniği, Kocaeli.

Presently described is a case with a twisted catheter in the radial artery during coronary angiography and was removed after stretching it with an external needle tip inserted into the brachial artery. A 77-year-old male patient had undergone coronary artery bypass surgery 10 years earlier and implantation of a permanent pacemaker 2 years prior. He had presented with typical angina and a regional wall motion defect had been observed on echocardiography. Read More

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December 2018
1 Read

The caregiver burden and the psychosocial adjustment of caregivers of cardiac failure patients.

Turk Kardiyol Dern Ars 2018 Dec;46(8):692-701

Department of Cardiology, Ege University Faculty of Medicine, İzmir, Turkey.

Objective: This cross-sectional, descriptive study evaluated the relationship between the caregiver burden and the psychosocial adjustment of caregivers to cardiac failure patients.

Methods: Between November 18, 2015 and March 1, 2016, a preliminary information form, the Caregiver Burden Scale, and the Psychosocial Adjustment to Illness Scale were used to assess the caregivers of 200 patients being treated in the cardiology service of a university hospital.

Results: Among the caregivers, 75% were primary or secondary school graduates, 36% were housewives, and 43% were the patients' spouse. Read More

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December 2018

Arrhythmia during diagnostic cardiac catheterization in pediatric patients with congenital heart disease.

Turk Kardiyol Dern Ars 2018 Dec;46(8):675-682

Department of Pediatric Cardiology, University of Health Sciences, İstanbul Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, İstanbul, Turkey.

Objective: Diagnostic and interventional cardiac catheterization procedures for congenital heart diseases (CHD) are becoming increasingly more popular, and arrhythmia is a well-known complication. This study was an evaluation of the incidence and causative agents of arrhythmia and the subsequent treatment strategies applied during cardiac catheterization.

Methods: The catheterization data of all of the patients who underwent diagnostic cardiac catheterization for CHD between January 2012 and 2018 at a single center were examined retrospectively. Read More

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December 2018

Percutaneous lead extraction and repositioning: An effective and safe therapeutic strategy for early ventricular lead perforation with dislocation both inside and outside the pericardial sac following a cardiac device implantation.

J Cardiovasc Electrophysiol 2018 Dec 5. Epub 2018 Dec 5.

Department of Cardiology, Hippokration General Hospital, 114 Vasilisis Sofias str, Athens, Greece.

Introduction: Cardiac perforation of the right ventricle associated with pacemaker or implantable cardioverter-defibrillator (ICD) leads' implantation is an uncommon, albeit potentially life-threatening, complication. The aim of this study is to further identify the optimal therapeutic strategy especially when lead dislocation has occurred outside the pericardial sac.

Methods And Results: The study population included 10 consecutive patients (6 female, mean age: 66. Read More

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December 2018

Rate and Predictors of Permanent Pacemaker Implantation after Transcatheter Aortic Valve Implantation: Current Status.

Curr Cardiol Rev 2018 Dec 4. Epub 2018 Dec 4.

Department of Cardiovascular Disease, Division of Cardiac Surgery, Casa Sollievo della Sofferenza IRCCS, San Giovanni Rotondo. Italy.

Transcather aortic valve implantation (TAVI) has become a safe and indispensable treatment option for patients with severe symptomatic aortic stenosis who are at high surgical risk. Recently, outcomes after TAVI have improved significantly and TAVI has emerged as a qualified alternative to surgical aortic valve replacement in the treatment of intermediate risk patients and greater adoption of this procedure is to be expected in a wider patients population, including younger patients and low surgical risk patients. However since the aortic valve has close spatial proximity to the conduction system, conduction anomalies are frequently observed in TAVI. Read More

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December 2018

Design and evaluation of the Micra Transcatheter Pacing System for bradyarrhythmia management.

Future Cardiol 2018 Dec 5. Epub 2018 Dec 5.

Cardiac Rhythm Management Research Department, University Hospital Southampton NHS Foundation Trust, Southampton, UK.

Permanent cardiac pacemakers have traditionally comprised a surgically implanted subcutaneous pulse generator affixed to at least one transvenous pacing lead. Despite technological advances, implant-related complications and transvenous-lead failure rates have remained high. The Micra Transcatheter Pacing System is a miniaturized single chamber pacemaker that is implanted directly into the right ventricle, eliminating the subcutaneous pocket and creating a leadless pacemaker system. Read More

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December 2018
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Inappropriate disabling of an ICD noise-detection algorithm in pacemaker-dependent patients.

Pacing Clin Electrophysiol 2018 Dec 4. Epub 2018 Dec 4.

Bordeaux University Hospital (CHU), Cardio-thoracic unit, F-33600 Pessac, France.

SecureSense™ is an ICD algorithm that differentiates lead-related oversensing from VT/VF by continuous comparison between the near field (NF) and the far field (FF) EGM. If lead noise is identified, inappropriate therapy is withheld. Undersensing on the FF channel could result in inappropriate inhibition of life-saving therapy. Read More

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December 2018

Ultrasound-Guided axillary venous access for pediatric and adult congenital lead implantation.

Pacing Clin Electrophysiol 2018 Dec 4. Epub 2018 Dec 4.

Children's Hospital at Montefiore, Bronx, NY.

Background: Axillary venous access with ultrasound guidance for pediatric transvenous lead implantation may reduce risks for pneumothorax and hemothorax. The objective was to retrospectively evaluate ultrasound-guided axillary vein access as an alternative to the subclavian approach.

Methods: The technique consists of ultrasonographic identification of the axillary vein at the delto-pectoral groove after initial contrast venography. Read More

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December 2018

Increased temporal sensitivity for threat: A Bayesian generalized linear mixed modeling approach.

Authors:
Jason Tipples

Atten Percept Psychophys 2018 Dec 4. Epub 2018 Dec 4.

Psychology Group, School of Social, Psychological & Communication Sciences, Leeds Beckett University, Leeds, UK.

People overestimate the duration of threat-related facial expressions, and this effect increases with self-reported fearfulness (Tipples in Emotion, 8, 127-131, 2008, Emotion, 11, 74-80, 2011). One explanation (Cheng, Tipples, Narayanan, & Meck in Timing and Time Perception, 4, 99-122, 2016) for this effect is that emotion increases the rate at which temporal information accumulates. Here I tested whether increased overestimation for threat-related facial expressions in high fearfulness generalizes to pictures of threatening animals. Read More

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December 2018

Developing a Minimum Data Set (MDS) for Cardiac Electronic Implantable Devices Implantation.

Acta Inform Med 2018 Oct;26(3):164-168

Department of Health Information Management, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran.

Background: There is no established minimum data set (MDS) for cardiovascular implantable electronic devices (CIEDs), which have led to a lack of standardized assessment criteria in this field to ensure access to a reliable and coherent set of data.

Objective: To establish the minimum data set of CIEDs implantation that enables consistency in data gathering, uniform data reporting and data exchange in clinical and research information systems.

Methods: This descriptive and cross-sectional study was conducted in 2018. Read More

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October 2018
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Emergence of a dalbavancin induced glycopeptide/lipoglycopeptide non-susceptible Staphylococcus aureus during treatment of a cardiac device-related endocarditis.

Emerg Microbes Infect 2018 Dec 5;7(1):202. Epub 2018 Dec 5.

Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria.

In the present study, we demonstrated the emergence of dalbavancin non-susceptible and teicoplanin-resistant Staphylococcus aureus small colony variants which were selected in vivo through long-term treatment with dalbavancin. A 36-year-old man presented with a cardiac device-related S. aureus endocarditis and received long-term therapy with dalbavancin. Read More

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December 2018
3 Reads

Sudden-onset severe presyncope in a 67-year-old man.

Heart 2018 Dec 4. Epub 2018 Dec 4.

Cardiology Department, Addenbrooke's Hospital, Cambridge, UK.

A 67-year-old man presented to the emergency department with sudden onset of severe presyncope. He reported that he had a permanent pacemaker implanted in 2006 following atrioventricular node ablation for persistent atrial fibrillation (AF). After suffering increasing shortness of breath, he underwent upgrade to cardiac resynchronisation therapy (CRT) in 2016. Read More

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December 2018

An electrocardiographic series of flecainide toxicity.

Indian Pacing Electrophysiol J 2018 Nov 28. Epub 2018 Nov 28.

San Antonio Military Medical Center, Electrophysiology Division, Cardiology Section, 3551 Roger Brooke Drive, San Antonio, TX, 78234, USA.

Anti-arrhythmic drugs (AADs) uniquely affect the various electrolyte channels in the heart and can slow conduction, increase refractoriness, and/or decrease automaticity with the goal of preventing tachyarrhythmias. Due to these properties, these same drugs are by nature pro-arrhythmic. Vaughan-Williams classification Ic AADs belong to a class of medications that inhibit sodium channels, leading to decreased conduction velocity of myocytes and Purkinje fibers as well as to decreased automaticity of pacemaker cells. Read More

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November 2018

Pacemaker site pseudoaneurysm from superior thoracic artery: an uncommon offender.

Acta Cardiol 2018 Dec 4:1-2. Epub 2018 Dec 4.

a Department of Cardiovascular Radiology and Endovascular Interventions , All India Institute of Medical Sciences , New Delhi , India.

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December 2018
1 Read

Telemonitoring with an implantable loop recorder in outpatient heart failure care : One year follow-up report from a prospective observational Dutch multicentre study.

Neth Heart J 2018 Dec 3. Epub 2018 Dec 3.

Department of Cardiology, Spaarne Gasthuis, Haarlem, The Netherlands.

Introduction: In the care of heart failure patients, telemonitoring is receiving growing attention. The main purpose of this study was to determine the effect of continuous telemonitoring with an implantable loop recorder (ILR, Reveal XT), a novel strategy in the management of stable heart failure patients without a cardiac implantable device. Furthermore, little is known about the incidence of subclinical arrhythmias in this specific group of patients. Read More

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December 2018

The Utility of Magnetic Resonance Imaging-compatible Pacemakers in Neurosurgical Patients.

Cureus 2018 Sep 27;10(9):e3374. Epub 2018 Sep 27.

Neurological Surgery, University of Miami Miller School of Medicine, Miami, USA.

Artificial implantable pacemakers have long been a challenge to neurosurgeons seeking to perform advanced diagnostic imaging on their patients. Unfortunately, while the use of implantable pacemakers has been a life-saving advance for those with cardiac arrhythmias, they also often prevent these patients from undergoing magnetic resonance imaging (MRI). There have been multiple reported cases of pacemaker failure in the context of MRI use. Read More

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September 2018

Diaphragmatic dysfunction.

Pulmonology 2018 Nov 30. Epub 2018 Nov 30.

Pneumology Service, University Hospital Complex of Santiago, Santiago de Compostela, Spain; Interdisciplinary Research Group in Pulmonology, Institute of Sanitary Research of Santiago de Compostela (IDIS), Santiago de Compostela, Spain.

The diaphragm is the main breathing muscle and contraction of the diaphragm is vital for ventilation so any disease that interferes with diaphragmatic innervation, contractile muscle function, or mechanical coupling to the chest wall can cause diaphragm dysfunction. Diaphragm dysfunction is associated with dyspnoea, intolerance to exercise, sleep disturbances, hypersomnia, with a potential impact on survival. Diagnosis of diaphragm dysfunction is based on static and dynamic imaging tests (especially ultrasound) and pulmonary function and phrenic nerve stimulation tests. Read More

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November 2018

Assessment of Permanent Selective His Bundle Pacing in Left Ventricular Synchronization Using 3-D Speckle Tracking Echocardiography.

Ultrasound Med Biol 2018 Nov 30. Epub 2018 Nov 30.

Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China. Electronic address:

The study described here aimed to evaluate left ventricular (LV) systolic mechanical synchronization during permanent selective His bundle pacing (SHBP) using 3-D speckle-tracking echocardiography post-operatively and 6 mo after pacemaker implantation in 62 patients randomly assigned to SHBP (n = 32) or right ventricular apical pacing (RVAP, n = 30). A standard apex four-chamber view was exposed and was transformed into full-volume mode under 3-D echocardiography. Three-dimensional speckle-tracking echocardiography was analyzed offline. Read More

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November 2018
2 Reads

Clinical Presentation of Gastrointestinal Stromal Tumors.

Visc Med 2018 Oct 13;34(5):335-340. Epub 2018 Oct 13.

Division of Surgical Oncology, Mannheim University Medical Center, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.

Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the gastrointestinal tract. They constitute 1-2% of all gastrointestinal neoplasms but are the most common subtype of soft tissue sarcomas, accounting for 20-25%. In the late 1990s, GISTs were more and more recognized as a particular tumor entity. Read More

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October 2018

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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October 2018

Croatian National Data and Comparison with European Practice: Data from the Cardiac Resynchronization Therapy Survey II Multicenter Registry.

Cardiol Res Pract 2018 25;2018:3479846. Epub 2018 Oct 25.

Sestre Milosrdnice University Hospital Centre, Zagreb, Croatia.

Aims: The Cardiac Resynchronization Therapy (CRT) Survey II was conducted between October 2015 and December 2016 and included data from 11088 CRT implantations from 42 countries. The survey's aim was to report on current European CRT practice. The aim of this study was to compare the Croatian national CRT practice with the European data. Read More

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October 2018

Electrode placement accuracy in robot-assisted epilepsy surgery: A comparison of different referencing techniques including frame-based CT versus facial laser scan based on CT or MRI.

Epilepsy Behav 2018 Nov 26. Epub 2018 Nov 26.

Department of Neurosurgery, University Hospital Frankfurt - Goethe-University, Frankfurt am Main, Germany; LOEWE Center for Personalized Translational Epilepsy Research (CePTER), Goethe-University, Frankfurt am Main, Germany.

Background: Precise robotic or stereotactic implantation of stereoelectroencephalography (sEEG) electrodes relies on the exact referencing of the planning images in order to match the patient's anatomy to the stereotactic device or robot. We compared the accuracy of sEEG electrode implantation with stereotactic frame versus laser scanning of the face based on computed tomography (CT) or magnetic resonance imaging (MRI) datasets for referencing.

Methods: The accuracy was determined by calculating the Euclidian distance between the planned trajectory and the postoperative position of the sEEG electrode, defining the entry point error (EPE) and the target point error (TPE). Read More

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November 2018
4 Reads

Resolution of fetal second-degree atrioventricular block.

J Electrocardiol 2018 Nov - Dec;51(6):945-947. Epub 2018 Aug 17.

University of Massachusetts Medical School, Department of Pediatric Cardiology, 55 Lake Avenue North, Worcester, MA 01655, United States of America.

Fetal atrioventricular (AV) block is a rare and potentially devastating condition. Most commonly fetal AV block is mediated by maternal lupus antibodies which cause irreversible damage to the AV node. For many fetuses, the only potential intervention is premature delivery and highly invasive pacemaker implantation. Read More

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August 2018
2 Reads

A larger vectorcardiographic QRS area is associated with left bundle branch block and good prognosis in patients with cardiac resynchronization therapy.

J Electrocardiol 2018 Nov - Dec;51(6):1099-1102. Epub 2018 Oct 5.

Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University, School of Medicine, Tochigi, Japan.

Background: The association between the vectorcardiographic QRS area, bundle branch pattern and clinical long-term prognosis in patients who have undergone cardiac resynchronization therapy (CRT) has been unclear.

Methods: We enrolled 50 consecutive patients who underwent CRT. Vectorcardiograms were constructed from preprocedural digital 12-lead electrocardiograms using the inverse Dower method. Read More

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October 2018

Malignant ventricular tachycardia and cardiac arrest induced by a micra™ leadless pacemaker.

J Electrocardiol 2018 Nov - Dec;51(6):1053-1054. Epub 2018 Sep 8.

Department of Cardiology, North Zealand Hospital, University of Copenhagen, Denmark.

Leadless pacemaker implantation represents an important advancement in the treatment of bradycardia, and occupy an increasing part in the clinic. Major adverse effects associated with leadless pacemaker implantation are rare, with a serious complication being pericardial effusion. We present a case of a patient who had a leadless pacemaker implanted, which induced ventricular tachycardia and cardiac arrest during hospitalization. Read More

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September 2018

Persistent but reversible advanced atrio-ventricular block in a heart transplant man induced by dobutamine stress echocardiography.

J Electrocardiol 2018 Nov - Dec;51(6):1035-1038. Epub 2018 Aug 27.

Cardiology Department, Université Libre de Bruxelles, Hôpital Erasme, Route de Lennik 808, 1070, Bruxelles, Belgium.

Dobutamine when used for stress echocardiography (DSE), it rarely causes transient atrio-ventricular (AV) block. We report a heart transplant patient with high cardiovascular risk who developed symptomatic advanced AV block during DSE which persisted after termination of dobutamine administration, necessitating pacemaker implantation. To our knowledge, this is the first published case of persistent high grade AV block in a heart transplant patient induced by DSE. Read More

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Unexpected and undesired side-effects of pacing algorithms during exercise.

J Electrocardiol 2018 Nov - Dec;51(6):1023-1028. Epub 2018 Aug 17.

IHU Liryc, Electrophysiology and Heart Modeling Institute, fondation Bordeaux Université, F-33600 Pessac-Bordeaux, France; Bordeaux University Hospital (CHU), Cardio-Thoracic Unit, F-33600 Pessac, France.

While the implantable pacemaker has initially been developed to treat symptomatic bradycardia, we demand of modern devices that they also function properly during exercise. In recent years, device manufacturers have implemented multiple proprietary algorithms which aim to improve pacemaker function by avoiding unnecessary right ventricular pacing, optimizing atrial refractory periods and diagnosing pacemaker mediated tachycardia. When activated, these algorithms may save the associated EGM into the device memory which enables later analysis by remote monitoring or device interrogation. Read More

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The first successful implantation of an intravenous AAIR pacemaker into autologous extracardiac lateral tunnel Fontan in the child.

J Electrocardiol 2018 Nov - Dec;51(6):1015-1018. Epub 2018 Jul 27.

Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Silesian Center for Heart Diseases, Zabrze, Poland; Department of Dietetics, School of Public Health in Bytom, Medical University of Silesia, Katowice, Poland.

Patients with a single ventricle have complex anatomy that requires staged palliation which is usually the Fontan procedure. This procedure has undergone a lot of modifications to improve hemodynamics. Despite these efforts, sinus node dysfunction (SND) and bradyarrythmias are still common complications after Fontan operation, therefore there is a need of pacemakers implantation. Read More

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[Transapical transcatheter aortic valve replacement for high risk pure non-calcified aortic regurgitation: two years outcome of a multi-center study].

Zhonghua Wai Ke Za Zhi 2018 Dec;56(12):910-915

Departments of Cardiovascular Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.

To report on the two years outcome of Chinese multi-center study of the treatment of high risk non-calcified pure aortic regurgitation with transcatheter heart valve replacement (TAVR) using domestic made J-Valve™ system. The national multi-center clinical study of the treatment of high risk non-calcified pure aortic regurgitation with transcatheter heart valve replacement using domestic made J-Valve™ system was conducted during the period from April 2014 to July 2015. The follow-up time was up to 2 years. Read More

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December 2018
3 Reads

The effect of periprocedural beta blocker withdrawal on arrhythmic risk following transcatheter aortic valve replacement.

Catheter Cardiovasc Interv 2018 Nov 29. Epub 2018 Nov 29.

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

Objective: To evaluate the efficacy and safety of periprocedural beta-blocker (BB) discontinuation among patients undergoing transcatheter aortic valve replacement (TAVR) and high degree atrioventricular block (HD-AVB) and/or atrial fibrillation (AF).

Methods: The study population comprised 743 consecutive patients who underwent TAVR between 2009 and 2017 in two high-volume tertiary centers. All patients received chronic BB therapy, and were divided into two groups: (1) BB continuation and (2) BB discontinued 24 hr prior to the procedure. Read More

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November 2018

Mohs micrographic surgery overlying a pacemaker.

Cutis 2018 Oct;102(4):E33-E34

Department of Family Practice, Mercer University School of Medicine, Columbus, Georgia, USA.

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October 2018

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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January 2019
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Dysrhythmias in patients with a complete atrioventricular septal defect: From surgery to early adulthood.

Congenit Heart Dis 2018 Nov 28. Epub 2018 Nov 28.

Department of Cardiothoracic Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands.

Objective: Outcomes after surgical repair of complete atrioventricular septal defect (cAVSD) have improved. With advancing age, the risk of development of dysrhythmias may increase. The aims of this study were to (1) examine development of sinus node dysfunction (SND), atrial and ventricular tachyarrhythmias, and (2) study progression of atrioventricular conduction abnormalities in young adult patients with repaired cAVSD. Read More

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November 2018
1 Read

Insulin gene enhancer binding protein 1 induces adipose tissue‑derived stem cells to differentiate into pacemaker‑like cells.

Int J Mol Med 2018 Nov 27. Epub 2018 Nov 27.

Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China.

Hybrid approaches combining gene‑ and cell‑based therapies to make biological pacemakers are a promising therapeutic avenue for bradyarrhythmia. The present study aimed to direct adipose tissue‑derived stem cells (ADSCs) to differentiate specifically into cardiac pacemaker cells by overexpressing a single transcription factor, insulin gene enhancer binding protein 1 (ISL‑1). In the present study, the ADSCs were transfected with ISL‑1 or mCherry fluorescent protein lentiviral vectors and co‑cultured with neonatal rat ventricular cardiomyocytes (NRVMs) in vitro for 5‑7 days. Read More

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November 2018
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Are implanted electronic devices hackable?

Trends Cardiovasc Med 2018 Nov 22. Epub 2018 Nov 22.

Division of Cardiology, Queen's University, Kingston, Ontario, Canada. Electronic address:

Medical devices have become increasingly connected in recent years. While this added interconnectivity has provided capabilities for wireless communication and remote monitoring, it has also introduced possible risks for cybersecurity vulnerabilities. Lately, there has been an increased awareness of the potential for cybersecurity breaches in implanted cardiac devices (pacemakers and defibrillators) among patients, healthcare providers, and the media. Read More

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November 2018
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