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Oruganti Sai Satish, K Sashikanth Srivastav
Till recently, ST segment elevation in the absence of conduction abnormalities or chest pain occurring particularly in young bradycardia individuals has been considered a normal variant called early repolarisation (ER). However, recent studies suggest a more worrisome picture as patients with history of idiopathic ventricular fibrillation showed increased prevalence of ER in ECG. ER is an ECG pattern characterised by elevation of the QRS-ST junction (J point) ≥ 2 mv from baseline in the inferior (II, III, aVF) or lateral (I, aVL, V4-V6) leads manifested as QRS slurring or notching...
July 2016: Journal of the Association of Physicians of India
Madhab Lamichhane, Joseph C Gardiner, Nicole R Bianco, Steven J Szymkiewicz, Ranjan K Thakur
PURPOSE: The wearable cardioverter defibrillator (WCD) is generally used for short periods of sudden cardiac death (SCD) risk; circumstances may occasionally result in prolonged use (over 1 year). The aim of this study was to determine the benefits and risks of prolonged use in patients with systolic heart failure (HF). METHODS: ZOLL's post-market US database included adult patients (≥18 years) with ischemic and/or non-ischemic cardiomyopathy (ICM, NICM) and at least 1 year of use...
October 17, 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Eduard Bleijenberg, Rudolph W Koster, Hendrik de Vries, Stefanie G Beesems
PURPOSE: The Guidelines place emphasis on high-quality cardiopulmonary resuscitation (CPR). This study aims to measure the impact of post-resuscitation feedback on the quality of CPR as performed by ambulance personnel. MATERIALS AND METHODS: Two ambulances are dispatched for suspected cardiac arrest. The crew (driver and paramedic) of the first arriving ambulance is responsible for the quality of CPR. The crew of the second ambulance establishes an intravenous access and supports the first crew...
October 14, 2016: Resuscitation
Polychronis Dilaveris, Dimitris Tousoulis
No abstract text is available yet for this article.
September 17, 2016: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
Ranjit Kumar Nath, Ajay Raj, C Parvatagouda, Neeraj Pandit
Left ventricular lead placement in the appropriate branch of coronary sinus is the key to successful cardiac resynchronization therapy (CRT) and this step is technically challenging. We describe a case of non-ischemic cardiomyopathy with heart failure, taken up for cardiac resynchronization therapy with defibrillator (CRT-D) implantation. The quadripolar left ventricular lead was impossible to advance into the target lateral branch of the coronary sinus. We made a veno-venous loop, advancing the coronary guidewire through the middle cardiac vein to coronary sinus and then to superior vena cava...
September 2016: Indian Heart Journal
Hemant Chaturvedi, Rudra Dev Pandey, Krishna Kumar Sharma, Jitendra Singh Makkar, Sanjeev K Sharma
We present a patient with asymptomatic apical hypertrophic cardiomyopathy (AHCM) who recently developed cardiac arrhythmias, and shortly discuss the diagnostic modalities, differential diagnosis, and treatment strategy for this condition. AHCM is a rare form of hypertrophic cardiomyopathy, which usually involves the apex of the left ventricle. AHCM can occur with varied presentations such as chest pain, palpitations, dyspnea, syncope, atrial fibrillation, myocardial infarction, embolic events, ventricular fibrillation, and congestive heart failure...
September 2016: Indian Heart Journal
Priccila Zuchinali, Gabriela C Souza, Maurício Pimentel, Diego Chemello, André Zimerman, Vanessa Giaretta, Joyce Salamoni, Bianca Fracasso, Leandro I Zimerman, Luis E Rohde
Importance: The presumed proarrhythmic action of caffeine is controversial. Few studies have assessed the effect of high doses of caffeine in patients with heart failure due to left ventricular systolic dysfunction at high risk for ventricular arrhythmias. Objective: To compare the effect of high-dose caffeine or placebo on the frequency of supraventricular and ventricular arrhythmias, both at rest and during a symptom-limited exercise test. Design, Setting, and Participants: Double-blinded randomized clinical trial with a crossover design conducted at the heart failure and cardiac transplant clinic of a tertiary-care university hospital...
October 17, 2016: JAMA Internal Medicine
Thomas Sené, Olivier Lidove, Joel Sebbah, Jean-Marc Darondel, Hervé Picard, Laurent Aaron, Olivier Fain, Thierry Zenone, Dominique Joly, Philippe Charron, Jean-Marc Ziza
The incidence and predictive factors of arrhythmias and/or conduction abnormalities (ACAs) requiring cardiac device (CD) implantation are poorly characterized in Fabry disease (FD). The aim of our retrospective study was to determine the prevalence, incidence, and factors associated with ACA requiring CD implantation in a monocentric cohort of patients with confirmed FD who were followed up in a department of internal medicine and reference center for FD.Forty-nine patients (20M, 29F) were included. Nine patients (4M, 5F; 18%) had at least one episode of ACA leading to device therapy...
October 2016: Medicine (Baltimore)
Jaume Miranda-Rius, Eduard Lahor-Soler, Lluís Brunet-Llobet, Xavier Sabaté de la Cruz
Patients with cardiac implantable electrical devices should take special precautions when exposed to electromagnetic fields. Proximity to equipment used in clinical dentistry may cause interference. This study evaluated in vitro the risks associated with different types/makes of cardiac devices and types of dental equipment. Six electronic dental tools were tested on three implantable cardioverter defibrillators and three pacemakers made by different manufacturers. Overall, the risk of interference with the pacemakers was 37% lower than with the implantable cardioverter defibrillators...
October 17, 2016: European Journal of Oral Sciences
Marie Christine Iliou, Jean Christophe Blanchard, Aurélia Lamar-Tanguy, Pascal Cristofini, François Ledru
Large subsets of patients admitted in cardiac rehabilitation centers are having a pacemaker, cardiac resynchronization (CRT) or implantable cardiac defibrillator (ICD). Cardiac rehabilitation for patients, mostly with heart failure, with implanted electronic devices as pacemakers or ICD is a unique opportunity not only to optimize the medical treatment, to increase their exercise capacity and improves their clinical condition but also to supervise the correct functioning of the device. CRT reduces clinical symptoms and increases slightly the exercise capacity...
October 14, 2016: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
Claudia Crocini, Cecilia Ferrantini, Raffaele Coppini, Marina Scardigli, Ping Yan, Leslie M Loew, Godfrey Smith, Elisabetta Cerbai, Corrado Poggesi, Francesco S Pavone, Leonardo Sacconi
Current rescue therapies for life-threatening arrhythmias ignore the pathological electro-anatomical substrate and base their efficacy on a generalized electrical discharge. Here, we developed an all-optical platform to examine less invasive defibrillation strategies. An ultrafast wide-field macroscope was developed to optically map action potential propagation with a red-shifted voltage sensitive dye in whole mouse hearts. The macroscope was implemented with a random-access scanning head capable of drawing arbitrarily-chosen stimulation patterns with sub-millisecond temporal resolution allowing precise epicardial activation of Channelrhodopsin2 (ChR2)...
October 17, 2016: Scientific Reports
Marcin Michalak, Andrzej Cacko, Agnieszka Kapłon-Cieślicka, Monika Budnik, Przemysław Stolarz, Grzegorz Opolski, Marcin Grabowski
BACKGROUND: Single-lead for implantable cardioverter-defibrillator (ICD) with floating atrial sensing dipole is a new diagnostic tool with the potential advantage in terms of arrhythmia discrimination. We sought to determine whether right heart size and dipole position influence atrial sensing. METHODS: Atrial sensing amplitude (AS) was measured during implantation (PP, periprocedural), predischarge (IHFU, in-hospital follow-up) and 3-6 months after the procedure (AFU, ambulatory follow-up)...
October 17, 2016: Cardiology Journal
Nisha Bansal, Adam Szpiro, Frederick Masoudi, Robert T Greenlee, David H Smith, David J Magid, Jerry H Gurwitz, Kristi Reynolds, Grace H Tabada, Sue Hee Sung, Ashveena Dighe, Andrea Cassidy-Bushrow, Romel Garcia-Montilla, Stephen Hammill, John Hayes, Alan Kadish, Param Sharma, Paul Varosy, Humberto Vidaillet, Alan S Go
OBJECTIVE: Patients with chronic kidney disease (CKD) have higher risk of sudden cardiac death; however, they may not receive implantable cardioverter defibrillators (ICDs), in part due to higher risk of complications. We evaluated whether CKD is associated with greater risk of device-delivered shocks/antitachycardia pacing (ATP) therapies among patients receiving a primary prevention ICD. METHODS: We studied participants in the observational Cardiovascular Research Network Longitudinal Study of Implantable Cardioverter Defibrillators...
October 14, 2016: Heart: Official Journal of the British Cardiac Society
Torsten Konrad, Sebastian Sonnenschein, Frank Patrick Schmidt, Hanke Mollnau, Karsten Bock, Blanca Quesada Ocete, Thomas Münzel, Cathrin Theis, Thomas Rostock
AIMS: Different cardiac arrhythmias have been suggested to be associated with Danon disease, e.g. Wolff-Parkinson-White syndrome. However, a systematic electrophysiological investigation of patients with Danon disease is lacking thus far. METHODS AND RESULTS: Seven patients with Danon disease (4 males, 35.8 ± 10.8 years; 3 females, 51.3 ± 19.9 years) from 3 different families were studied. In all patients, the presence of Danon disease was confirmed by western blot of biopsy material or genetic testing...
October 14, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Alban-Elouen Baruteau, Thomas Barnetche, Luc Morin, Zakaria Jalal, Nicholas S Boscamp, Emmanuel Le Bret, Jean-Benoit Thambo, Julie A Vincent, Alain Fraisse, Alejandro J Torres
BACKGROUND: Transcatheter techniques are emerging for left atrial (LA) decompression under venoarterial extracorporeal membrane oxygenation (VA-ECMO). We aimed to assess whether balloon atrioseptostomy (BAS) is a safe and efficient strategy. METHODS: All patients who underwent percutaneous static BAS under VA-ECMO at four tertiary institutions were retrospectively reviewed. RESULTS: From 2000 to 2014, BAS was performed in 64 patients (32 adults and 32 children)...
October 14, 2016: European Heart Journal. Acute Cardiovascular Care
Michael McCarthy
No abstract text is available yet for this article.
October 14, 2016: BMJ: British Medical Journal
Martin Grett, Martin Christ, Hans-Joachim Trappe
BACKGROUND: Little is known about the incidence and risk factors for progression to pacemaker dependency or the need for cardiac resynchronization in typical patients with an implanted defibrillator with regard to an alternative implantation of a subcutaneous ICD (S-ICD). STUDY DESIGN AND METHODS: After retrospective analysis of 291 patients with first implantation of a transvenous single chamber ICD (VVI-ICD) from 2010-2016 and excluding those with an indication for pacemaker or lack of follow-up data, 121 patients were included and investigated with regard to the following endpoints: need for pacemaker stimulation, upgrade for cardiac resynchronization (CRT), and secondary occurrence and effectiveness of antitachycardia pacing (ATP)...
October 13, 2016: Herzschrittmachertherapie & Elektrophysiologie
Claudia Schaarschmidt, Christof Kolb
The subcutaneous implantable defibrillator (S-ICD) has become an established tool for the prevention of sudden cardiac death. Based on its detection properties, the S‑ICD is essentially dependent on correct morphology discrimination of the QRS complex and avoidance of potential T‑wave sensing. We report on a patient who experienced multiple inappropriate S‑ICD shocks due to T‑wave oversensing in the setting of new onset of right bundle branch block. Strategies for the optimisation of the device programming are discussed...
October 13, 2016: Herzschrittmachertherapie & Elektrophysiologie
Antonio Berruezo, Juan Acosta, Juan Fernández-Armenta, Alonso Pedrote, Alberto Barrera, Eduardo Arana-Rueda, Andrés Ignacio Bodegas, Ignasi Anguera, Luis Tercedor, Diego Penela, David Andreu, Rosario Jesus Perea, Susana Prat-González, Lluis Mont
BACKGROUND: First-line endoepicardial ventricular tachycardia (VT) ablation has been proposed for patients with arrhythmogenic cardiomyopathy (AC). This study reports procedural safety, outcomes, and predictors of recurrence. METHODS AND RESULTS: Forty-one consecutive patients [12 with left ventricle (LV) involvement, 7 left-dominant] underwent first-line endoepicardial VT substrate ablation. Standard bipolar and unipolar thresholds were used to define low-voltage areas (LVA)...
October 12, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Tatsuya Nishikawa, Masashi Fujino, Ikutaro Nakajima, Yasuhide Asaumi, Yu Kataoka, Toshihisa Anzai, Kengo Kusano, Teruo Noguchi, Yoichi Goto, Kunihiro Nishimura, Yoshihiro Miyamoto, Keisuke Kiso, Satoshi Yasuda
AIMS: The prognostic impact of chronic total coronary occlusion (CTO) on implantable cardioverter-defibrillator (ICD) recipients remains unclear. METHODS AND RESULTS: Eighty-four consecutive patients with ischaemic heart disease who received ICD therapy for primary or secondary prevention were analysed. We investigated all-cause mortality and major adverse cardiac events (MACEs) including cardiac death, appropriate device therapy, hospitalization for heart failure, and ventricular assist device implantation...
October 13, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
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