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Atrial defibrilation

Hossam Abubakar, Mohammed Osman, Emmanuel Akintoye, Ahmed Subahi, Khansa Osman, Aiden Abidov
BACKGROUND AND PURPOSE: Advances of implantable cardioverter-defibrillator (ICD) devices allow correlating changes in the intra-thoracic impedance (TI), an indicator of fluid overload, with the onset of arrhythmic events. In an attempt to attain a better understanding of this relationship, we conducted a meta-analysis of studies that investigated the association between TI changes and the onset of AT/AF and/or VT/VF in patients with ICD devices. METHODS: We performed a meta-analysis of studies published through January 2017 that reported an association between a decrease in the TI measured by the OptiVol fluid index (OI) and occurrence of AT/AF and VT/VF...
May 1, 2018: International Journal of Cardiology
Philipp Stieger, Obaida R Rana, Erol Saygili, Haschmatulla Zazai, Thomas Rauwolf, Conrad Genz, Rajen Bali, Ruediger C Braun-Dullaeus, Samir M Said
BACKGROUND: Implantable cardioverter/defibrillator (ICD) shocks can cause myocardial injury, contributing to the progression of the underlying heart disease. The aim was to evaluate whether internal electrical cardioversion (int-CV) via the ICD or conventional external CV (ext-CV) of persistent atrial fibrillation (AF) in heart failure (HF) patients induces myocardial injury and initiates inflammation. METHODS AND RESULTS: A total of 115 HF patients with an ejection fraction between 20% and 45% were prospectively enrolled...
March 12, 2018: Journal of Cardiology
Mark N Belkin, Cesar E Soria, Albert L Waldo, C Jan Willem Borleffs, David L Hayes, Roderick Tung, Jagmeet P Singh, Gaurav A Upadhyay
BACKGROUND: Despite the clear association between atrial fibrillation and risk for thromboembolic events (TEs), the clinical significance of new-onset device-detected atrial tachyarrhythmia (DDAT) and TE remains disputed. We aimed to determine the risk of TE in patients with new-onset DDAT. METHODS AND RESULTS: The OVID Medline, Cochrane, and Scopus databases (inception to November 2016) were searched. Randomized controlled trials, prospective, or retrospective studies of pacemaker or defibrillator patients reporting incidence of DDAT were selected...
March 2018: Circulation. Arrhythmia and Electrophysiology
Carina Carnlöf, Per Insulander, Mats Jensen-Urstad, Marie Iwarzon, Fredrik Gadler
OBJECTIVES: To explore sex differences regarding indication for atrio-ventricular junction ablation (AVJ), choice of pacing system, complications to pacemaker treatment, long-term outcome, and cause of death after AVJ ablation. DESIGN: 700 patients who had undergone AVJ ablation between January 1990 and December 2010 were included. Data were retrieved from the patients´ medical records and the Swedish Pacemaker and Implantable Cardioverter-Defibrillator Registry...
March 14, 2018: Scandinavian Cardiovascular Journal: SCJ
Mouhannad M Sadek, Varsha Chaugai, Mark J Cleland, Timothy J Zakutney, David H Birnie, F Daniel Ramirez
BACKGROUND: The relevance of transthoracic impedance (TTI) to electrical cardioversion (ECV) success for atrial tachyarrhythmias when using biphasic waveform defibrillators is unknown. HYPOTHESIS: TTI is predictive of ECV success with contemporary defibrillators. METHODS: De-identified data stored in biphasic defibrillator memory cards from ECV attempts for atrial fibrillation (AF) or atrial flutter (AFL) over a two-year period at our center were evaluated...
March 13, 2018: Clinical Cardiology
M Hulleman, M T Blom, A Bardai, H L Tan, R W Koster
No abstract text is available yet for this article.
March 12, 2018: Netherlands Heart Journal
Alessandro Proclemer, Massimo Zecchin, Antonio D'Onofrio, Giuseppe Boriani, Domenico Facchin, Luca Rebellato, Marco Ghidina, Giulia Bianco, Emanuela Bernardelli, Elsa Pucher, Dario Gregori
BACKGROUND: The pacemaker (PM) and implantable cardioverter-defibrillator (ICD) registry of the Italian Association of Arrhythmology and Cardiac Pacing (AIAC) monitors the main epidemiological data in real-world practice. The survey for the 2016 activity collects information about demographics, clinical characteristics, main indications for PM/ICD therapy and device types from the Italian collaborating centers. METHODS: The registry collects prospectively national PM and ICD implantation activity on the basis of European cards...
February 2018: Giornale Italiano di Cardiologia
Justin M Cloutier, Clarence Khoo, Brett Hiebert, Anthony Wassef, Colette M Seifer
OBJECTIVES: The objectives of this study were to evaluate the effectiveness of a physician notification system for atrial fibrillation (AF) detected on cardiac devices, and to assess predictors of anticoagulation in patients with device-detected AF. METHODS: In 2013, a physician notification system for AF detected on a patient's CIED [including pacemakers, implantable cardioverter defibrillators (ICD) or cardiac resynchronization therapy (CRT) devices] was implemented, with a recommendation to consider oral anticoagulation in high-risk patients...
April 2018: Therapeutic Advances in Cardiovascular Disease
Salma I Patel, Michael J Ackerman, Fadi E Shamoun, Jeffrey B Geske, Steve R Ommen, William T Love, Stephen S Cha, Johan M Bos, Steven J Lester
INTRODUCTION: Risk assessment for sudden cardiac death (SCD) in hypertrophic cardiomyopathy (HCM) remains complex. The goal of this study was to assess electrocardiogram (ECG)-derived risk factors on SCD in a large HCM population Methods: Retrospective review of adults with HCM evaluated at Mayo Clinic, Rochester, MN from 1 December 2002 to 31 December 2012 was performed. Data inclusive of ECG and 24-hour ambulatory Holter monitor were assessed. SCD events were documented by ventricular fibrillation (VF) noted on implantable cardioverter defibrillator (ICD), or appropriate VT or VF-terminating ICD shock...
March 7, 2018: Acta Cardiologica
Taro Tenma, Hisashi Yokoshiki, Hirofumi Mitsuyama, Masaya Watanabe, Kazuya Mizukami, Rui Kamada, Masayuki Takahashi, Ryo Sasaki, Motoki Maeno, Kaori Okamoto, Yuki Chiba, Toshihisa Anzai
BACKGROUND: Implantable Cardioverter-Defibrillator (ICD) shocks have been associated with mortality. However, no study has examined the relation between total shock energy and mortality. The aim of this study is to assess the association of total shock energy with mortality, and to determine the patients who are at risk of this association. METHODS: Data from 316 consecutive patients who underwent initial ICD implantation in our hospital between 2000 and 2011 were retrospectively studied...
February 20, 2018: International Journal of Cardiology
Dai-Yin Lu, Iraklis Pozios, Bereketeab Haileselassie, Ioannis Ventoulis, Hongyun Liu, Lars L Sorensen, Marco Canepa, Susan Phillip, M Roselle Abraham, Theodore P Abraham
BACKGROUND: Hypertrophic cardiomyopathy (HCM) is a common inherited cardiac disease characterized by varying degrees of left ventricular outflow tract obstruction. In a large cohort, we compare the outcomes among 3 different hemodynamic groups. METHODS AND RESULTS: We prospectively enrolled patients fulfilling standard diagnostic criteria for HCM from January 2005 to June 2015. Detailed phenotypic characterization, including peak left ventricular outflow tract pressure gradients at rest and after provocation, was measured by echocardiography...
February 25, 2018: Journal of the American Heart Association
Pietro Palmisano, Federico Guerra, Ernesto Ammendola, Matteo Ziacchi, Ennio Carmine Luigi Pisanò, Gabriele Dell'Era, Vittorio Aspromonte, Maria Zaccaria, Francesco Di Ubaldo, Alessandro Capucci, Gerardo Nigro, Eraldo Occhetta, Giampiero Maglia, Renato Pietro Ricci, Giuseppe Boriani, Michele Accogli
BACKGROUND: To determine whether daily physical activity (PA), as measured by implanted devices (through accelerometer sensor), was related to the risk of developing atrial arrhythmias during long-term follow-up in a population of heart failure (HF) patients with an implantable cardioverter defibrillator (ICD). METHODS AND RESULTS: The study population was divided into 2 equally sized groups (PA cutoff point: 3.5 h/d) according to their mean daily PA recorded by the device during the 30- to 60-day period post-ICD implantation...
February 24, 2018: Journal of the American Heart Association
Kenneth Dickstein, Camilla Normand, Angelo Auricchio, Nigussie Bogale, John G Cleland, Anselm K Gitt, Christoph Stellbrink, Stefan D Anker, Gerasimos Filippatos, Maurizio Gasparini, Gerhard Hindricks, Carina Blomström Lundqvist, Piotr Ponikowski, Frank Ruschitzka, Giovanni Luca Botto, Alan Bulava, Gabor Duray, Carsten Israel, Christophe Leclercq, Peter Margitfalvi, Óscar Cano, Chris Plummer, Nedim Umutay Sarigul, Maciej Sterlinski, Cecilia Linde
BACKGROUND: Cardiac resynchronisation therapy (CRT) reduces morbidity and mortality in appropriately selected patients with heart failure and is strongly recommended for such patients by guidelines. A European Society of Cardiology (ESC) CRT survey conducted in 2008-2009 showed considerable variation in guideline adherence and large individual, national and regional differences in patient selection, implantation practice and follow-up. Accordingly, two ESC associations, the European Heart Rhythm Association and the Heart Failure Association, designed a second prospective survey to describe contemporary clinical practice regarding CRT...
February 19, 2018: European Journal of Heart Failure
Vishesh Kumar, Shahbaz A Malik, Maryam Sheikh, Adam Stys
Infections are known complications of cardiovascular implantable electronic devices (CIEDs). We describe a case of a 62-year-old male who presented with pulseless electrical activity (PEA) cardiac arrest and respiratory failure. He had a history of cardiac resynchronization device and defibrillator (CRT-D) implantation for nonischemic cardiomyopathy. After resuscitation, he was found to have methicillin sensitive Staphylococcus aureus (MSSA) bacteremia on blood culture and large vegetations on the CRT-D lead and tricuspid valve found on echocardiography...
January 2018: South Dakota Medicine: the Journal of the South Dakota State Medical Association
Andrea Di Cori, Alessio Lilli, Giulio Zucchelli, Valerio Zaca
Ischemic strokes may be associated with atrial fibrillation (AF). AF detection is critical in ischemic stroke survivors, often recommending a switch from antiplatelet therapy to oral anticoagulants for secondary prevention. Areas covered: Cardiac implantable electronic devices (CIED) with their long-term recording capability allows to document AF and to quantify the arrhythmia burden. Recent series in pacemaker and implantable cardioverter-defibrillator (ICD) recipients with no prior stroke showed that short episodes of AF increased stroke risk compared with those without AF recorded...
February 12, 2018: Expert Review of Cardiovascular Therapy
Nassir F Marrouche, Johannes Brachmann, Dietrich Andresen, Jürgen Siebels, Lucas Boersma, Luc Jordaens, Béla Merkely, Evgeny Pokushalov, Prashanthan Sanders, Jochen Proff, Heribert Schunkert, Hildegard Christ, Jürgen Vogt, Dietmar Bänsch
BACKGROUND: Mortality and morbidity are higher among patients with atrial fibrillation and heart failure than among those with heart failure alone. Catheter ablation for atrial fibrillation has been proposed as a means of improving outcomes among patients with heart failure who are otherwise receiving appropriate treatment. METHODS: We randomly assigned patients with symptomatic paroxysmal or persistent atrial fibrillation who did not have a response to antiarrhythmic drugs, had unacceptable side effects, or were unwilling to take these drugs to undergo either catheter ablation (179 patients) or medical therapy (rate or rhythm control) (184 patients) for atrial fibrillation in addition to guidelines-based therapy for heart failure...
February 1, 2018: New England Journal of Medicine
Daniele Masarone, Giuseppe Limongelli, Marta Rubino, Fabio Valente, Rossella Vastarella, Ernesto Ammendola, Rita Gravino, Marina Verrengia, Gemma Salerno, Giuseppe Pacileo
Heart failure patients are predisposed to develop arrhythmias. Supraventricular arrhythmias can exacerbate the heart failure symptoms by decreasing the effective cardiac output and their control require pharmacological, electrical, or catheter-based intervention. In the setting of atrial flutter or atrial fibrillation, anticoagulation becomes paramount to prevent systemic or cerebral embolism. Patients with heart failure are also prone to develop ventricular arrhythmias that can present a challenge to the managing clinician...
February 28, 2017: Journal of Cardiovascular Development and Disease
Maciej Kempa, Szymon Budrejko, Grzegorz Sławiński, Tomasz Królak, Ewa Lewicka, Grzegorz Raczak
BACKGROUND AND AIM: Subcutaneous implantable cardioverter-defibrillator (S-ICD) is an effective and modern tool used to protect patients at risk of sudden cardiac death from potentially life-threatening ventricular arrhythmias. The first S-ICD systems were implanted in Poland in 2014, but since that time the national experience with that therapy has been limited. Our analysis summarizes the single-center experience at the Department of Cardiology and Electrotherapy of the Medical University of Gdansk with the use of S-ICD from the year 2014 to 2017...
January 19, 2018: Kardiologia Polska
Anar Mammadli, Veysel Kutay Vurgun, Onur Yıldırım, Ali Timuçin Altın, Başar Candemir, Ömer Akyürek
With the increasing number of implanted pacemakers and implantable cardioverter defibrillators, removal is required more frequently. Presently described is the transvenous extraction of a 26-year-old Accufix atrial lead using a mechanical dilator sheath. A 50-year-old male patient was admitted to the clinic with a pacemaker pocket infection. The atrial lead was an Accufix Bipolar J-Atrial active fixation lead, a model that was recalled in 1994, after reports of 2 deaths and 2 nonfatal injuries related to protrusion of the J retention wire...
January 2018: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
Bader Abu Ghalyoun, Matthew Lempel, Hamid Shaaban, Fayez Shamoon
A 32-year-old woman with a past medical history of paroxysmal atrial fibrillation, long QT syndrome, and implantation of an automatic iimplantable cardioverter-defibrillator (AICD) following cardiac arrest presented with disabling symptoms of paroxysmal atrial fibrillation due to recurrent AICD shocks. Before curative ablation, transesophageal echocardiography was performed to assess for existing thrombi. This is a rare case of successful resolution with apixaban of a massive left atrial appendage thrombus due to non-rheumatic atrial fibrillation that was successfully treated with apixaban...
January 2018: Annals of Cardiac Anaesthesia
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