47,143 results match your criteria Pacing and Clinical Electrophysiology: PACE[Journal]

Safety and Feasibility of a Mid-Septal Implantation Technique of A Leadless Pacemaker.

Heart Rhythm 2018 Dec 11. Epub 2018 Dec 11.

Cardiology Division, Department of Medicine, Queen Mary Hospital, the University of Hong Kong, Hong Kong SAR, China;; Division of Cardiology, Department of Medicine, the University of Hong Kong Shenzhen Hospital, China;; Shenzhen Institutes of Research and Innovation, University of Hong Kong, China. Electronic address:

Background: The major risk of implanting leadless pacemaker at the right ventricular apex is cardiac perforation.

Objective: We described and prospectively evaluated the safety and feasibility of a technique for mid-septal implantation of the Micra leadless pacemaker.

Methods: We positioning the device at the center of the cardiac silhouette in the right anterior oblique (RAO) view, towards the left in the left anterior oblique (LAO) view and away from the sternum in the left lateral view. Read More

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December 2018

Clinical investigation of esophageal injury from cryoballoon ablation of persistent atrial fibrillation.

Pacing Clin Electrophysiol 2018 Dec 14. Epub 2018 Dec 14.

Heart center, Japan Red Cross Yokohama City Bay Hospital, Yokohama City, Japan.

Background: The cryoballoon (CB) can be utilized for extra pulmonary vein (PV) ablation such as for a left atrial (LA) posterior wall (LAPW) isolation. However, scrutiny of the esophageal injuries during the LAPW isolation has never been performed. We sought to thoroughly investigate the esophageal lesions (ELs) and gastric hypomotility (GH) caused by an LAPW isolation using a CB. Read More

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December 2018

Gender differences in symptoms and functional status in patients with atrial fibrillation undergoing catheter ablation.

Pacing Clin Electrophysiol 2018 Dec 13. Epub 2018 Dec 13.

Chapel Hill: Department of Medicine, Division of Cardiology, University of North Carolina, 160 Dental Circle CB#7075, Chapel Hill, NC 27599, USA.

Background: Catheter ablation improves symptoms and quality of life in patients with atrial fibrillation (AF); however, despite its benefit, women are less likely than men to undergo catheter ablation. Women with AF have been described to have more frequent and severe symptoms with a lower quality of life than men, and it is therefore unclear why women are less likely to undergo catheter ablation. We prospectively characterized gender differences in AF symptoms among men and women undergoing ablation at UNC using questionnaire data. Read More

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December 2018

Implantable Cardioverter Defibrillator replacement guided by T wave safety margin in a short QT syndrome patient.

Pacing Clin Electrophysiol 2018 Dec 13. Epub 2018 Dec 13.

Department of Cardiology & Cardiovascular Research Institute, Renmin Hospital of Wuhan University, Wuhan, 430060, China.

We report ICD generator replacement guided by T wave safety margin (TWSM) in a short QT syndrome patient with T wave oversensing (TWOS). During the procedure of generator replacement, the feature of ventricular sensing in 4 different ICDs was compared in the patient. The 4 ICDs showed different R and T wave amplitudes. Read More

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December 2018

Conduction recovery following pacemaker implantation after transcatheter aortic valve replacement.

Pacing Clin Electrophysiol 2018 Dec 13. Epub 2018 Dec 13.

Division of Cardiology, Bluhm Cardiovascular Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL.

Background: Transcatheter aortic valve replacement (TAVR) is increasingly used to treat severe aortic stenosis. A frequent complication of TAVR is high grade or complete atrioventricular (AV) block requiring a permanent pacemaker (PPM). There is little data on the long-term dependency on pacing after TAVR. Read More

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December 2018

All the things that we should think about if we want to diagnose the long QT accurately.

Pacing Clin Electrophysiol 2018 Dec 12. Epub 2018 Dec 12.

Division of Arrhythmia and Electrophysiology, Department of Cardiology, University of Health Sciences, Yuksek Ihtisas Heart-Education and Research Hospital, Ankara, Turkey.

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December 2018

Unchanged QRS morphology with atrial pacing in a case of WPW syndrome. What is the mechanism?

Pacing Clin Electrophysiol 2018 Dec 13. Epub 2018 Dec 13.

University of Szeged, Hungary.

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December 2018

Cardiac resynchronization therapy improves myocardial conduction.

Pacing Clin Electrophysiol 2018 Dec 13. Epub 2018 Dec 13.

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

Background: Cardiac resynchronization therapy (CRT) reverses left ventricular remodeling and improves left ventricular systolic function. However, little is known about whether CRT improves ventricular conduction.

Objective: To determine the relationship between CRT response and QRS narrowing. Read More

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December 2018

Acetylcholine spasm provocation test by trans-radial artery and brachial vein approach.

Catheter Cardiovasc Interv 2018 Dec 8. Epub 2018 Dec 8.

Department of Cardiology, Ehime Niihama Prefectural Hospital, Niihama, Ehime, Japan.

Background: Temporary pace maker is necessary because of transient block or bradycardia during the intracoronary acetylcholine spasm provocation tests based on the Japanese Circulation Society guidelines.

Objectives: We examined the feasibility and safety of the acetylcholine spasm provocation test via the radial artery and brachial vein approach.

Methods: We tried to perform the acetylcholine spasm provocation tests in 252 patients via the radial artery and brachial vein approach procedures during 5 years. Read More

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December 2018

Editorial: Reappraisal of increasing heart rate for cardiac performance.

Makoto Akaishi

J Cardiol Cases 2014 Apr 25;9(4):170-171. Epub 2013 Dec 25.

Department of Cardiology, Kitasato University Kitasato Institute Hospital, Tokyo, Japan.

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Triventricular pacing improved dyssynchrony in heart failure patient with right-bundle branch block and left anterior fascicular block.

J Cardiol Cases 2014 Apr 5;9(4):158-161. Epub 2014 Feb 5.

Cardiovascular Division, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan.

The present case report describes a 53-year-old man with drug-resistant heart failure. Electrocardiogram showed complete right-bundle branch block and left anterior fascicular block. A cardiac resynchronization therapy (CRT) device was implanted in him because echocardiography showed obvious left ventricular dyssynchrony between septal and lateral walls. Read More

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Left brachiocephalic vein occlusion in a patient with an aortic arch aneurysm: Rare cause of obstraction for a pacemaker implantation.

J Cardiol Cases 2014 Jan 13;9(1):32-34. Epub 2013 Dec 13.

Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan.

Venous occlusions or anatomic variants are unexpectedly encountered during transvenous pacing lead implantation procedures. A 78-year-old man, who had been medically treated for a thoracic and abdominal dissecting aortic aneurysm was referred to our hospital for treatment of congestive heart failure due to complete atrioventricular block with bradycardia. At the time of the pacemaker implantation, the guidewire for inserting the introducer sheath could not be advanced into the left brachiocephalic vein. Read More

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January 2014

Ventricular pacing inhibition by oversensing due to diaphragmatic myopotential during deep inspiration.

J Cardiol Cases 2013 Aug 25;8(2):e81-e84. Epub 2013 Jun 25.

Division of Cardiology, Saga Prefectural Hospital Koseikan, 1-12-9 Mizugae, Saga 840-8571, Japan.

An 80-year-old man, who had dilated cardiomyopathy with right ventricular (RV) dilatation, underwent implantable cardioverter defibrillator (ICD) implantation for advanced atrioventricular block and primary prevention of sudden cardiac death. Tined and screw-in leads were placed on the right atrial appendage and RV apex, respectively. Ventricular pacing inhibition was detected after surgery due to oversensing by diaphragmatic myopotential occurring only during deep inspiration. Read More

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Anti-tachycardia pacing degenerated fast ventricular tachycardia into undetectable life-threatening tachyarrhythmia in a patient with non-ischemic dilated cardiomyopathy.

J Cardiol Cases 2010 Dec 8;2(3):e159-e162. Epub 2010 Aug 8.

Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, 2-5-1, Shikata-cho, Kita-ku, Okayama City, Okayama 700-8558, Japan.

A 45-year-old man with dilated cardiomyopathy was admitted to our hospital due to congestive heart failure (CHF). Despite the optimal medical treatment, his condition had not improved because of severe left ventricular dysfunction. Because he experienced non-sustained ventricular tachycardia (VT), a biventricular implantable cardioverter-defibrillator (Bi-V ICD) was implanted for reduction of dyssynchrony and primary prevention of lethal tachyarrhythmia. Read More

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December 2010

A case of fulminant myocarditis treated with very long-term support by cardiopulmonary support system.

J Cardiol Cases 2016 Nov 6;14(5):141-144. Epub 2016 Aug 6.

Cardiovascular Center, Munakata Suikokai General Hospital, Fukutsu, Japan.

Fulminant myocarditis (FM) sometimes causes severe left ventricular dysfunction and lethal arrhythmias leading to cardiogenic shock and critical conditions. Thus, mechanical circulation support with intra-aortic balloon pumping and/or a cardiopulmonary support system (CPS) is sometimes needed to save lives. The special recommended therapies for FM for that classified as class I (evidence level C) in the guidelines of the Japanese Circulation Society are intra-aortic balloon pumping, CPS, percutaneous cardiac pacing, and a left ventricular assist device (LVAD), and they are well established in evidence-based medicine. Read More

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November 2016

Pacemaker implantation in superior vena cava obstruction: Re-canalization, venoplasty, and stenting.

J Cardiol Cases 2016 Jul 9;14(1):29-31. Epub 2016 Apr 9.

James Cook University Hospital, Middlesbrough, UK.

Techniques to overcome challenging venous anatomy have become an increasingly important part of modern day cardiac device implantation. Complete superior vena cava (SVC) obstruction, however, is a rare and serious clinical entity, and consequently there is limited clinical experience in addressing this pathology in the context of transvenous pacemaker implantation. We present the case of a 48-year-old renal transplant patient with sick sinus syndrome and recurrent syncope, who had an upper SVC occlusion and a failed epicardial pacing system. Read More

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Complete atrioventricular block improved by balloon aortic valvuloplasty for severe aortic stenosis: Usefulness of sheathless technique in the retrograde approach.

J Cardiol Cases 2016 Jun 10;13(6):181-184. Epub 2016 Mar 10.

Division of Cardiology, Matsuyama Red Cross Hospital, Matsuyama, Japan.

An 86-year-old man was admitted to our hospital for treatment of congestive heart failure with severe aortic stenosis and advanced atrioventricular (AV) block. Despite pharmacological therapy, he developed complete AV block and resultant acute pulmonary edema requiring temporary pacing and tracheal intubation. We urgently performed retrograde balloon aortic valvuloplasty (BAV) with a sheathless technique. Read More

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Biventricular pacing and coronary sinus ICD lead implantation in a patient with a mechanical tricuspid valve replacement.

J Cardiol Cases 2015 Dec 29;12(6):180-182. Epub 2015 Aug 29.

The Heart Hospital, University College Hospital, London, UK.

A 49-year-old man was admitted with symptomatic, sustained monomorphic ventricular tachycardia. He had a previous history of AMP-kinase disease associated with hypertrophic cardiomyopathy and complete heart block, and a pre-existing dual chamber pacemaker. He also had a mechanical tricuspid valve replacement and mitral valve replacement, for severe tricuspid regurgitation from right ventricle (RV) lead-induced injury to the tricuspid valve and a fibroblastoma on the mitral valve. Read More

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December 2015

Failure of steroid withdrawal guided by F-FDG PET in a patient with cardiac sarcoidosis.

J Cardiol Cases 2017 Jan 15;15(1):10-13. Epub 2016 Nov 15.

Department of Cardiovascular Medicine, Shinshu University School of Medicine, Nagano, Japan.

A 71-year-old man diagnosed with cardiac sarcoidosis (CS) 11 years previously underwent implantation of an implantable cardioverter defibrillator due to sustained ventricular tachycardia. Over past decade, his condition of CS did not progress on the maintenance steroid dose of 7.5 mg per day. Read More

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January 2017

Epicardial implantation of a transvenous implantable cardioverter-defibrillator system in Ebstein's malformation with tricuspid valve repair.

J Cardiol Cases 2015 Sep 20;12(3):91-93. Epub 2015 Jun 20.

Department of Cardiology and Cardiothoracic Surgery, Freeman Hospital, Newcastle Upon Tyne, United Kingdom.

In this case report, we describe the implant of a transvenous implantable cardioverter-defibrillator lead on the left ventricular epicardial surface of a young patient with Ebstein's anomaly, facilitating effective defibrillation and anti-tachycardia pacing. The difficulties of conventional placement in Ebstein's malformation as well as the technique and outcome of epicardial lead implantation of a transvenous defibrillator-pacer system are discussed. < This case report highlights the possible placement of a conventional transvenous defibrillator lead on alternative site such as epicardial surface as a solution in patients with Ebstein's anomaly undergoing open heart surgery. Read More

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September 2015

A case of cardiac sarcoidosis masquerading as arrhythmogenic right ventricular cardiomyopathy awaiting heart transplant.

J Cardiol Cases 2010 Jun 12;1(3):e161-e165. Epub 2010 Jan 12.

Department of Cardiovascular Medicine, National Cardiovascular Center, Osaka, Japan.

We report a case of 45-year-old man, who was diagnosed with arrhythmogenic right ventricular cardiomyopathy (ARVC) and presented with right ventricular (RV) enlargement with a global decrease in RV contractility accompanied by impairment of left ventricular function. He was placed on the heart transplant waiting list. Endomyocardial biopsy from RV septal wall did not show any evidence of sarcoidosis or inflammatory change. Read More

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Pacemaker system replacement under local anesthesia allowing MRI access 7 years after the initial surgery: Two case reports.

J Rural Med 2018 Nov 29;13(2):185-187. Epub 2018 Nov 29.

Department of Cardiovascular Surgery, Shonai Amarume Hospital, Japan.

Older pacemaker systems, which are magnetic resonance imaging (MRI) incompatible, require replacement with compatible systems when patients are in need of MRI. Replacement involves extraction of the pacing lead, which is usually done with a laser sheath under general anesthesia. We report two cases of complete pacing system replacements allowing patient access to MRI. Read More

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November 2018

Enhanced pacing modalities in bradycardia patients: Can technology reduce costs?

Rev Port Cardiol 2018 Dec 10. Epub 2018 Dec 10.

Unidade de Arritmologia, Pacing e Eletrofisiologia (UNAPE), Centro Hospitalar Universitário Lisboa Central, Hospital de Santa Marta, Lisboa, Portugal; Centro do Coração, Hospital CUF Infante Santo, Lisboa, Portugal; Instituto de Fisiologia, Faculdade de Medicina de Lisboa, Lisboa, Portugal. Electronic address:

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December 2018

His Bundle-CRT: Elegant Old Science Finds its Modern Clinical Application.

J Am Coll Cardiol 2018 Dec;72(24):3123-3125

Department of Medicine, University of Vermont, Burlington, Vermont. Electronic address:

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December 2018

His Resynchronization Versus Biventricular Pacing in Patients With Heart Failure and Left Bundle Branch Block.

J Am Coll Cardiol 2018 Dec;72(24):3112-3122

National Heart and Lung Institute, Imperial College London, London, United Kingdom.

Background: His bundle pacing is a new method for delivering cardiac resynchronization therapy (CRT).

Objectives: The authors performed a head-to-head, high-precision, acute crossover comparison between His bundle pacing and conventional biventricular CRT, measuring effects on ventricular activation and acute hemodynamic function.

Methods: Patients with heart failure and left bundle branch block referred for conventional biventricular CRT were recruited. Read More

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December 2018

Use of the Metal Deletion Technique for Radiotherapy Planning in Patients with Cardiac Implantable Devices.

Klin Onkol 2018 ;31(6):434-438

Background: The number of cancer patients with cardiac implantable electronic devices receiving radiotherapy is increasing. Irradiation of such patients can cause malfunctions in pacemakers and implantable cardioverter-defibrillators. In this respect, it is necessary to make a proper irradiation plan for such cancer patients to minimize the dose received by both cardiac devices and pacing leads. Read More

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January 2018

CRT Pacing: Midterm Follow-Up in LV Only Pacing without RV Lead in Patients with Normal AV Conduction.

J Clin Med 2018 Dec 8;7(12). Epub 2018 Dec 8.

University of Medicine and Pharmacy "Carol Davila", 014451 Bucharest, Romania.

Background: The aim of our study was to assess the real life cardiac resynchronization therapy (CRT) fusion left ventricular (LV) only pacing in patients with normal AV conduction (NAVc) without right ventricular (RV) lead.

Methods: Consecutive NAVc patients with CRT indication were implanted with a right atrium RA/LV DDD pacing system. Complete follow-up at 1, 3 and every 6 months thereafter included echocardiography and stress testing. Read More

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December 2018

Complications and outcomes of temporary transvenous pacing: an analysis of over 360,000 patients from the National Inpatient Sample.

Chest 2018 Dec 10. Epub 2018 Dec 10.

Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.

Background: The incidence of complications and the outcomes of temporary transvenous pacemaker (TTP) placement in the modern era are not well established.

Methods: To determine the current incidence of pericardial complications and the outcomes of patients undergoing TTP, we performed an analysis using the National Inpatient Sample (NIS), which is a US national database of hospital admissions. We identified all patients who underwent TTP using ICD-9 codes. Read More

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December 2018

Contemporary Outcomes of Pediatric Restrictive Cardiomyopathy: A Single-Center Experience.

Pediatr Cardiol 2018 Dec 12. Epub 2018 Dec 12.

Cincinnati Children's Hospital Medical Center, Heart Institute, Cincinnati, OH, USA.

Background: Pediatric restrictive cardiomyopathy (RCM) has high mortality in historical cohorts, and traditional management often involves early referral for heart transplantation (HTx). This study sought to determine outcomes of pediatric RCM at a center that has favored medical management over early listing for HTx.

Methods: All patients (N = 43) with pure RCM phenotype (RCM, N = 26) and hypertrophic cardiomyopathy with restrictive physiology (RCM/HCM, N = 17) managed at our center over a 15-year period were investigated. Read More

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December 2018

Propulsive Power in Cross-Country Skiing: Application and Limitations of a Novel Wearable Sensor-Based Method During Roller Skiing.

Front Physiol 2018 20;9:1631. Epub 2018 Nov 20.

Department of Physical Performance, Norwegian School of Sports Sciences, Oslo, Norway.

Cross-country skiing is an endurance sport that requires extremely high maximal aerobic power. Due to downhill sections where the athletes can recover, skiers must also have the ability to perform repeated efforts where metabolic power substantially exceeds maximal aerobic power. Since the duration of these supra-aerobic efforts is often in the order of seconds, heart rate, and pulmonary VO do not adequately reflect instantaneous metabolic power. Read More

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November 2018

Single-brand dual-chamber discriminators to prevent inappropriate shocks in patients implanted with prophylactic implantable cardioverter defibrillators: a propensity-weighted comparison of single- and dual-chamber devices.

J Interv Card Electrophysiol 2018 Dec 6. Epub 2018 Dec 6.

Cardiology Department, Hospital Universitario Infanta Leonor, Gran Vía del Este, 28030, Madrid, Spain.

Purpose: Comparisons of the efficacy of dual- vs. single-chamber implantable cardioverter defibrillators (ICDs) in preventing inappropriate shocks have had contradictory results. We investigated whether dual-chamber devices have a lower risk of inappropriate shocks and the specific role of supraventricular tachycardia (SVT) discriminators. Read More

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December 2018

Human diaphragm atrophy in ALS is not predicted by routine respiratory measures.

Eur Respir J 2018 Dec 5. Epub 2018 Dec 5.

APHP, Groupe Hospitalier Pitié-Salpêtrière Charles Foix, Département de Neurologie, Centre référent SLA, Paris, France.

Amyotrophic lateral sclerosis (ALS) patients show progressive respiratory muscle weakness leading to death from respiratory failure. However, there are no data on diaphragm histological changes in ALS patients and how they correlate with routine respiratory measurements.We collected 39 diaphragm biopsies concomitantly with laparoscopic insertion of intradiaphragmatic electrodes during a randomised controlled trial evaluating early diaphragm pacing in ALS (NCT01583088). Read More

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December 2018

Left Ventricular Dyssynchrony Predicts the Cardiomyopathy Associated With Premature Ventricular Contractions.

J Am Coll Cardiol 2018 Dec;72(23 Pt A):2870-2882

Section of Cardiac Electrophysiology, Department of Medicine, University of California-San Francisco, San Francisco, California. Electronic address:

Background: The pathophysiology of cardiomyopathy associated with premature ventricular contractions (PVCs) remains unclear.

Objectives: This study prospectively explored cardiomyopathy development in a swine model of paced ectopic beats.

Methods: A total of 35 swine underwent pacemaker implantation. Read More

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December 2018

A Minimally Invasive Approach for Placing Sew-On Epicardial Leads in the Child.

Innovations (Phila) 2018 Nov/Dec;13(6):455-457


Traditionally, pacing leads are placed transvenously, although smaller pediatric patients who require permanent pacemakers may benefit from delaying tranvenous lead placement until they are larger. Alternative, minimally invasive atrioventricular pacing options have not previously existed for this patient population, leaving many of these children with large sternotomies or thoracotomies. Using three port sites and an adjustable shaft dual-needle suturing device, we placed a steroid-eluting, sew-on epicardial lead on the right atrium of a 9-year-old patient. Read More

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December 2018
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Usefulness of Cardiac Resynchronization Therapy in Patients With Continuous Flow Left Ventricular Assist Devices.

Am J Cardiol 2019 Jan 2;123(1):93-99. Epub 2018 Oct 2.

University of Iowa.

The benefit of cardiac resynchronization therapy in patients supported by a left ventricular assist device (LVAD) is unknown. There are currently no guidelines regarding the continuation, discontinuation or pacemaker (PM) settings post-LVAD implant. The aim of the study was to assess the hemodynamic benefit of biventricular (BiV) pacing in LVAD patients. Read More

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January 2019

Quantification of Beat-To-Beat Variability of Action Potential Durations in Langendorff-Perfused Mouse Hearts.

Front Physiol 2018 27;9:1578. Epub 2018 Nov 27.

State Key Laboratory of Agrobiotechnology, School of Life Sciences, Chinese University of Hong Kong, Hong Kong, China.

Beat-to-beat variability in action potential duration (APD) is an intrinsic property of cardiac tissue and is altered in pro-arrhythmic states. However, it has never been examined in mice. Left atrial or ventricular monophasic action potentials (MAPs) were recorded from Langendorff-perfused mouse hearts during regular 8 Hz pacing. Read More

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November 2018

Current and Emerging Therapeutic Options for Gastroparesis.

Gastroenterol Hepatol (N Y) 2018 Nov;14(11):639-645

Dr Myint, Dr Rieders, and Dr Tashkandi are gastroenterology fellows in the Division of Gastroenterology and Liver Diseases at George Washington University Medical Center and are affiliated with Medical Faculty Associates, both in Washington, DC. Dr Borum is a professor of medicine at George Washington University School of Medicine in Washington, DC; director of the Division of Gastroenterology and Liver Diseases at George Washington University Medical Center; and is affiliated with Medical Faculty Associates. Dr Koh and Dr Stephen are in private practice in Silver Spring, Maryland. Dr Doman is a clinical professor of medicine at George Washington University School of Medicine and is in private practice in Silver Spring, Maryland.

Gastroparesis is a complex, debilitating dysmotility disorder with challenging symptom management. A diagnosis of gastroparesis is based on objectively delayed gastric emptying in the absence of mechanical obstruction. Given the limited efficacy of treatment options and serious side effects, significant research continues for therapeutic options for gastroparesis. Read More

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November 2018

Optical stimulation of cardiac cells with a polymer-supported silicon nanowire matrix.

Proc Natl Acad Sci U S A 2018 Dec 11. Epub 2018 Dec 11.

Department of Chemistry, The University of Chicago, Chicago, IL 60637;

Electronic pacemakers can treat electrical conduction disorders in hearts; however, they are invasive, bulky, and linked to increased incidence of infection at the tissue-device interface. Thus, researchers have looked to other more biocompatible methods for cardiac pacing or resynchronization, such as femtosecond infrared light pulsing, optogenetics, and polymer-based cardiac patches integrated with metal electrodes. Here we develop a biocompatible nongenetic approach for the optical modulation of cardiac cells and tissues. Read More

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December 2018
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Ablation of idiopathic ventricular fibrillation triggered by ventricular premature beat originating from myocardium of right ventricle: Case report.

J Cardiol Cases 2014 Mar 28;9(3):109-112. Epub 2013 Dec 28.

The Division of Pacing and Electrophysiology, Rambam Health Care Campus and Bruce Rappaport Faculty of Medicine, Haifa, Israel.

We report a case of a 55-year-old woman with idiopathic ventricular fibrillation (VF) who suffered from recurrent implantable cardioverter-defibrillator shocks triggered by short coupled ventricular premature beat (VPB). This VPB was mapped and ablated from the myocardium of right ventricle close to the lateral tricuspid annulus. < Triggering ventricular premature beat (VPB) in idiopathic ventricular fibrillation was reported to originate from the myocardium of right ventricular outflow tract or from Purkinje system. Read More

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Torsade de pointes associated with the combination of solifenacin and clenbuterol for urinary incontinence.

J Cardiol Cases 2014 Mar 12;9(3):91-93. Epub 2013 Dec 12.

Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Tochigi, Japan.

A 79-year-old woman undergoing medical treatment with solifenacin and clenbuterol for urinary incontinence was admitted to our hospital because of recurrent syncope. Her syncope appeared one month after the doses of clenbuterol were increased. Torsade de pointes (TdP) was evident on her Holter electrocardiogram at the time when she developed syncope. Read More

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Successful treatment of functional mitral regurgitation in severe heart failure with atrial pacing: A case report.

J Cardiol Cases 2014 Feb 13;9(2):50-53. Epub 2013 Dec 13.

Department of Disease Control and Homeostasis, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.

Functional mitral regurgitation (MR) is a common complication accompanying left ventricular dysfunction. Increasing resting heart rate (HR) is demonstrated to be associated with increased mortality in heart failure (HF) patients. Thus, lowering HR is recommended by recent HF management guidelines. Read More

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February 2014

Complete atrioventricular block associated with not apical but midventricular ballooning.

J Cardiol Cases 2013 Apr 6;7(4):e109-e113. Epub 2013 Feb 6.

Division of Cardiology, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.

An 86-year-old woman was admitted to hospital with a head injury secondary to an episode of syncope associated with incontinence. Electrocardiography showed complete atrioventricular block, giant negative T waves in the precordial leads, and QT interval prolongation. Emergency coronary angiography showed no significant coronary stenosis, while left ventriculography demonstrated midventricular ballooning. Read More

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Ventricular fusion mimicking acute inferior myocardial infarction in a patient with a dual-chamber pacemaker.

J Cardiol Cases 2012 Oct 10;6(4):e106-e108. Epub 2012 Jul 10.

Cardiology Division, Azienda Ospedaliera Universitaria Maggiore della Carità, Corso Mazzini 18, 28100 Novara, Italy.

Background And Purpose: Early diagnosis of acute myocardial infarction is based on 12-lead electrocardiography (ECG), however this interpretation could be difficult in patients with ventricular-paced rhythm.

Subject: We describe the clinical case of a 44-year-old man already implanted with a dual-chamber closed loop stimulation (CLS) pacemaker (PM) and admitted to our department with an ECG showing ST elevation in the inferior leads. All examinations were negative and showed no abnormalities. Read More

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October 2012

Iatrogenic atrioventricular reentrant tachycardia following Bjork/Fontan palliation of tricuspid atresia: Electro-anatomic mapping, ablation, review and possible mechanism.

J Cardiol Cases 2012 Sep 25;6(3):e66-e69. Epub 2012 Apr 25.

Michigan Congenital Heart Center, University of Michigan Health System, Ann Arbor, MI, USA.

This case report describes the successful ablation of an iatrogenic accessory pathway in a Fontan patient. A 15-year-old girl with tricuspid atresia was palliated with a Bjork modification Fontan procedure; six years later she developed supraventricular tachycardia. Electro-anatomic mapping during electrophysiology study localized a concealed iatrogenic atrioventricular accessory pathway and facilitated successful ablation using radiofrequency energy. Read More

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September 2012

Manifest cardiac memory after biventricular pacing in a super-responder patient: Is memory the sign of a 'forgotten' electrical ventricular pattern?

J Cardiol Cases 2011 Dec 27;4(3):e129-e132. Epub 2011 Aug 27.

Division of Cardiovascular Diseases 2, Santa Chiara Hospital, University of Pisa, Via Roma 67, 56100 Pisa, Italy.

We present the case of a super-responder patient with a basal left bundle branch block, who underwent cardiac resynchronization therapy and showed, during biventricular pacing, typical electrocardiographic signs of cardiac memory. Read More

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December 2011

The case of successful catheter ablation using only the approach from the upper part of the subject's body, with meandering aorta and implanted IVC filter.

J Cardiol Cases 2011 Oct 19;4(2):e115-e120. Epub 2011 Aug 19.

Second Department of Internal Medicine, Kansai Medical University, Moriguchi City, Japan.

A 79-year-old female had paroxysmal supraventricular tachycardia. However, she was implanted with an inferior vena cava filter and her descending aorta had significant meandering. It was thought that the insertion of the catheters would be difficult from the femoral vessels. Read More

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October 2011

Subclavicular screwed wire transient pacing to increase safety of transcatheter aortic valve implantation with the CoreValve system.

J Cardiol Cases 2011 Jun 6;3(3):e167-e169. Epub 2011 Apr 6.

Department of Cardiology, CHU Timone, Rue St Pierre, Marseille 13005, France.

Regarding the risk of atrioventricular block during the first days following transcatheter aortic valve implantation (TAVI), temporary pacing is required. Conventional transfemoral temporary pacing catheters have several drawbacks including the risk of cardiac perforation, infection, and the absence of any fixation mechanism. We describe a case of TAVI procedure with safer temporary pacing, using subclavicular active-fixation pacemaker electrode and external generator. Read More

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Retrograde fast pathway ablation with the EnSite NavX mapping system for slow-fast atrioventricular node reentrant tachycardia and a prolonged PR interval during sinus rhythm.

J Cardiol Cases 2011 Jun 12;3(3):e143-e148. Epub 2011 Apr 12.

Second Department of Internal Medicine, Kansai Medical University, Moriguchi City, Japan.

An 84-year-old male had experienced palpitations. He was transported to our hospital for treatment of palpitations. A 12-lead electrocardiogram (ECG) showed regular tachycardia with a wide QRS complex of 153 bpm, and the P wave was not clear. Read More

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Torsades de pointes induced by garenoxacin in association with pacing failure in an elderly woman with VDD pacemaker.

J Cardiol Cases 2011 Apr 20;3(2):e62-e64. Epub 2011 Feb 20.

Division of Cardiology, Shizuoka Red Cross Hospital, 8-2 Otemachi Aoiku, Shizuoka 420-0853, Japan.

An 86-year-old woman was admitted to the hospital for syncope and convulsion 4 days after starting antibiotic therapy for pneumonia with oral garenoxacin 400 mg/day. She had a VDD pacemaker for complete atrioventricular (AV) block. Her electrocardiogram showed marked QT prolongation and during pacemaker interrogation pacing failure probably due to battery depletion induced torsades de pointes. Read More

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An alternative technique for implantation of a dual chamber pacemaker via a persistent left superior vena cava using a coronary sinus guiding catheter.

J Cardiol Cases 2010 Oct 25;2(2):e103-e105. Epub 2010 Jul 25.

Department of Cardiology, University Hospitals of Morecambe Bay, Royal Lancaster Infirmary, Lancaster, UK.

The authors present an alternative use of coronary sinus guide catheters designed for cardiac resynchronization therapy to help achieve the usually complex implantation of a dual chamber permanent pacemaker via a persistent left superior vena cava when conventional pacing techniques and right-sided implantation have failed. Read More

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October 2010