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Dual defibrillation

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https://www.readbyqxmd.com/read/27910085/sprint-fidelis-implantable-cardioverter-defibrillators-lead-patient-management-and-survival-single-center-study
#1
Marcin Grabowski, Jakub Kosma Rokicki, Sylwia Gajda, Łukasz Januszkiewicz, Andrzej Cacko, Przemysław Stolarz, Grzegorz Opolski
BACKGROUND: Over the last several years significant rises in the use of implanted cardioverter-defibrillators (ICD) have also resulted in a number of associated complications. This number includes lead failure. Sprint Fidelis ICD lead (SF) is regarded as a lead with elevated failure risk. Every center acting in accordance with the guidelines should observe patients more thoroughly especially with recalled leads and run a registry of their follow-up. The aim of the present research was to observe patients with SF leads (types 6948, 6949) from a single implantation center...
December 2, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27909501/-two-for-the-price-of-one-a-single-lead-implantable-cardioverter-defibrillator-system-with-a-floating-atrial-dipole
#2
REVIEW
Nicole E Worden Md, Musab Alqasrawi Md, Siva M Krothapalli Md, Alexander Mazur Md
In patients known to be a high risk for sudden cardiac arrest, implantable cardioverter defibrillators (ICD) are a proven therapy to reduce risk of death. However, in patients without conventional indications for pacing, the optimal strategy for type of device, dual- versus single-chamber, remains debatable. The benefit of prophylactic pacing in this category of patients has never been documented. Although available atrial electrograms in a dual chamber system improve interpretation of stored arrhythmia events, allow monitoring of atrial fibrillation and may potentially reduce the risk of inappropriate shocks by enhancing automated arrhythmia discrimination, the use of dual-chamber ICDs has a number of disadvantages...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27861115/leadless-cardiac-pacing-what-primary-care-providers-and-non-ep-cardiologists-should-know
#3
REVIEW
Erich L Kiehl, Daniel J Cantillon
Over the last 50 years, the use of transvenous pacemakers has been constrained by long-term complications that affect more than 1 in 10 patients, largely attributable to the endovascular leads and surgical pocket. Leadless cardiac pacing involves a self-contained pacemaker deployed directly into the heart without a lead or incisional access. The procedure has shown promise, eliminating pocket-related complications. Other advantages include postprocedural shoulder mobility and the ability to drive, shower, and bathe...
November 2016: Cleveland Clinic Journal of Medicine
https://www.readbyqxmd.com/read/27833686/first-report-of-survival-in-refractory-ventricular-fibrillation-after-dual-axis-defibrillation-and-esmolol-administration
#4
Kevin M Boehm, Daniel C Keyes, Laura E Mader, J Michelle Moccia
There is a subset of patients who suffer a witnessed ventricular fibrillation (VF) arrest and despite receiving reasonable care with medications (epinephrine and amiodarone) and multiple defibrillations (3+ attempts at 200 joules of biphasic current) remain in refractory VF (RVF), also known as electrical storm. The mortality for these patients is as high as 97%. We present the case of a patient who, with a novel approach, survived RVF to outpatient follow up.
November 2016: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27826203/economic-impact-of-longer-battery-life-of-cardiac-resynchronization-therapy-defibrillators-in-sweden
#5
Fredrik Gadler, Yao Ding, Nathalie Verin, Martin Bergius, Jeffrey D Miller, Gregory M Lenhart, Mason W Russell
OBJECTIVE: The objective of this study was to quantify the impact that longer battery life of cardiac resynchronization therapy defibrillator (CRT-D) devices has on reducing the number of device replacements and associated costs of these replacements from a Swedish health care system perspective. METHODS: An economic model based on real-world published data was developed to estimate cost savings and avoided device replacements for CRT-Ds with longer battery life compared with devices with industry-standard battery life expectancy...
2016: ClinicoEconomics and Outcomes Research: CEOR
https://www.readbyqxmd.com/read/27823600/radiotherapy-induced-cardiac-implantable-electronic-device-dysfunction-in-patients-with-cancer
#6
Rodrigo Bagur, Mathilde Chamula, Émilie Brouillard, Caroline Lavoie, Luis Nombela-Franco, Anne-Sophie Julien, Louis Archambault, Nicolas Varfalvy, Valérie Gaudreault, Sébastien X Joncas, Zeev Israeli, Yasir Parviz, Mamas A Mamas, Shahar Lavi
Radiotherapy can affect the electronic components of a cardiac implantable electronic device (CIED) resulting in malfunction and/or damage. We sought to assess the incidence, predictors, and clinical impact of CIED dysfunction (CIED-D) after radiotherapy for cancer treatment. Clinical characteristics, cancer, different types of CIEDs, and radiation dose were evaluated. The investigation identified 230 patients, mean age 78 ± 8 years and 70% were men. A total of 199 patients had pacemakers (59% dual chamber), 21 (9%) cardioverter-defibrillators, and 10 (4%) resynchronizators or defibrillators...
October 7, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27778352/long-term-stability-and-clinical-utility-of-amplified-atrial-electrograms-in-a-single-lead-icd-system-with-floating-atrial-electrodes
#7
Nicole E Worden, Musab Alqasrawi, Alexander Mazur
BACKGROUND: Available atrial electrograms in implantable cardioverter defibrillators (ICDs) improve arrhythmia diagnosis, allow monitoring for atrial fibrillation, and may reduce the risk of inappropriate therapies. A recently introduced ICD system using a single-lead with floating atrial electrodes provides diagnostic capability of a dual-chamber system without placing an additional lead. Data on long-term clinical performance of this system are limited. METHODS: We retrospectively analyzed data from 35 consecutive patients implanted with Biotronik VR-T DX devices and Linox(Smart) DX leads...
October 24, 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27747856/influence-of-echocardiographic-and-radiographic-characteristics-on-atrial-sensing-amplitude-in-patients-with-linox-smart-s-dx-defibrillation-leads
#8
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
https://www.readbyqxmd.com/read/27734455/complications-in-recipients-of-cardioverter-defibrillator-or-cardiac-resynchronization-therapy-insights-from-silesian-center-defibrillator-registry
#9
Mateusz Tajstra, Elżbieta Gadula-Gacek, Anna Kurek, Elżbieta Adamowicz-Czoch, Dawid Olszowski, Mateusz Ostręga, Aneta Ciślak, Łukasz Pyka, Michał Hawranek, Andrzej Lekston, Lech Poloński, Mariusz Gąsior
BACKGROUND: Current real-life information from all-comers registries from middle and east Europe about the incidence and type of complications during long-term follow-up of patients with cardioverters-defibrillators (ICD) and cardiac resynchronization devices-defibrillators (CRT-D) is still insufficient. The aim of the study was to assess the incidence and determinants of short- and long-term complications related to implantable ICD and CRT-D. METHODS: We studied 1,105 recipients hospitalized in our center in 2009-2013, followed for a mean of 2...
October 13, 2016: Cardiology Journal
https://www.readbyqxmd.com/read/27702848/contemporary-rates-and-outcomes-of-single-vs-dual-coil-implantable-cardioverter-defibrillator-lead-implantation-data-from-the-israeli-icd-registry
#10
Eran Leshem, Mahmoud Suleiman, Avishag Laish-Farkash, Yuval Konstantino, Michael Glikson, Alon Barsheshet, Ilan Goldenberg, Yoav Michowitz
AIMS: Dual-coil leads were traditionally considered standard of care due to lower defibrillation thresholds (DFT). Higher complication rates during extraction with parallel progression in implantable cardioverter defibrillator (ICD) technology raised questions on dual coil necessity. Prior substudies found no significant outcome difference between dual and single coils, although using higher rates of DFT testing then currently practiced. We evaluated the temporal trends in implantation rates of single- vs...
October 4, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27693167/-safety-of-device-implantation-under-antipatelet-therapy-with-ticagrelor-about-20-cases
#11
W Amara, S Naccache, C Akret, S Cheggour, S M'Zoughi, G Galuscan, A Dompnier
INTRODUCTION: Management of antiplatelet therapy at the time of device implantation remains controversial. This study aimed to assess the risk of bleeding complications in patients receiving ticagrelor at the time of cardiac device surgery. METHODS: We performed a multicentre (n=4), retrospective study from January 2015 to January 2016. The survey included all patients (pts) treated with ticagrelor before undergoing pacemaker, implantable cardioverter-defibrillator (ICD) implantation or generator replacement...
September 29, 2016: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/27651007/position-paper-for-management-of-elderly-patients-with-pacemakers-and-implantable-cardiac-defibrillators-groupe-de-rythmologie-et-stimulation-cardiaque-de-la-soci%C3%A3-t%C3%A3-fran%C3%A3-aise-de-cardiologie-et-soci%C3%A3-t%C3%A3-fran%C3%A3-aise-de-g%C3%A3-riatrie-et-g%C3%A3-rontologie
#12
Laurent Fauchier, Christine Alonso, Frédéric Anselme, Hugues Blangy, Pierre Bordachar, Serge Boveda, Nicolas Clementy, Pascal Defaye, Jean-Claude Deharo, Patrick Friocourt, Daniel Gras, Franck Halimi, Didier Klug, Jacques Mansourati, Benjamin Obadia, Jean-Luc Pasquié, Dominique Pavin, Nicolas Sadoul, Jérôme Taieb, Olivier Piot, Olivier Hanon
Despite the increasingly high rate of implantation of pacemakers (PM) and cardioverter-defibrillators (ICD) in elderly patients, data supporting their clinical and cost-effectiveness in this age stratum are ambiguous and contradictory. We reviewed the data regarding the applicability, safety, and effectiveness of the conventional pacing, ICD and cardiac resynchronization therapy (CRT) in elderly patients. Although peri-procedural risk may be slightly higher in the elderly, the procedure of implantation of PMs and ICDs is still relatively safe in this age group...
September 1, 2016: Gériatrie et Psychologie Neuropsychiatrie du Vieillissement
https://www.readbyqxmd.com/read/27624809/sensing-and-detection-in-medtronic-implantable-cardioverter-defibrillators
#13
Mark L Brown, Charles D Swerdlow
Ensuring sensing and detection of ventricular tachycardia (VT) and ventricular fibrillation (VF) was a prerequisite for the clinical trials that established the survival benefit of implantable cardioverter defibrillators (ICDs). However, for decades, a high incidence of unnecessary shocks limited patients' and physicians' acceptance of ICD therapy. Oversensing, misclassification of supraventricular tachycardia (SVT) as VT, and self-terminating VT accounted for the vast majority of unnecessary shocks. Medtronic ICDs utilize sensitive baseline settings with minimal blanking periods to ensure accurate sensing of VF, VT, and SVT electrograms...
September 2016: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/27624808/optimal-tachycardia-programming-in-icds-recommendations-in-the-post-madit-rit-era
#14
Carsten W Israel, Tatsiana Burmistrava
Optimal implantable cardioverter-defibrillator (ICD) programming can reduce the incidence of inappropriate shock therapy and improve prognosis in patients with an ICD. Only after results from randomized trials became available was the "safety first" feeling overcome that mandated early shock therapy, waived the use of antitachycardia pacing and forced shock therapy after a time of 30 s expired, even if tachycardia discriminators would have withheld the therapy. The strong evidence to limit ICD therapy to longer ventricular tachycardia (VT) should not result in individually dangerous ICD programming, particularly in patients with a high risk of slow VT (known monomorphic VT, post VT ablation, during treatment with amiodarone, very dilated left ventricle)...
September 2016: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/27624353/laser-lead-extraction-allows-for-safe-and-effective-removal-of-single-and-dual-coil-implantable-cardioverter-defibrillator-leads-a-single-centre-experience-over-12-years
#15
Simon Pecha, Yalin Yildirim, Nils Gosau, Muhammet Ali Aydin, Stephan Willems, Hendrik Treede, Hermann Reichenspurner, Samer Hakmi
OBJECTIVES: Lead extraction in patients with multiple or old leads of an implantable cardioverter defibrillator (ICD) is challenging. As adhesions are common at the side of the shock coils, we investigated success and procedural complication rates of laser lead extraction procedures in single- and dual-coil leads. METHODS: Between January 2001 and June 2013, 41 single- and 145 dual-coil ICD leads were extracted from 171 patients using laser sheaths. Procedural data, success rates and complications were collected into a database and retrospectively analysed...
September 13, 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/27605236/detection-and-discrimination-of-tachycardia-in-icds-manufactured-by-st-jude-medical
#16
Jan Zdarek, Carsten W Israel
Modern implantable cardioverter/defibrillator (ICD) systems offer a multitude of algorithms to optimize performance in sensing and tachycardia detection even in difficult circumstances (e. g., ventricular tachycardia during supraventricular tachycardia, fine ventricular fibrillation with intermittent undersensing), to reliably discriminate sustained ventricular tachyarrhythmia from noise, nonsustained and supraventricular tachyarrhythmia, and to limit shock therapy only to those arrhythmias that definitely need to be treated by a shock...
September 2016: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/27603935/trends-and-in-hospital-outcomes-associated-with-adoption-of-the-subcutaneous-implantable-cardioverter-defibrillator-in-the-united-states
#17
Daniel J Friedman, Craig S Parzynski, Paul D Varosy, Jordan M Prutkin, Kristen K Patton, Ali Mithani, Andrea M Russo, Jeptha P Curtis, Sana M Al-Khatib
Importance: Trends and in-hospital outcomes associated with early adoption of the subcutaneous implantable cardioverter defibrillator (S-ICD) in the United States have not been described. Objectives: To describe early use of the S-ICD in the United States and to compare in-hospital outcomes among patients undergoing S-ICD vs transvenous (TV)-ICD implantation. Design, Setting, and Participants: A retrospective analysis of 393 734 ICD implants reported to the National Cardiovascular Data Registry ICD Registry, a nationally representative US ICD registry, between September 28, 2012 (US Food and Drug Administration S-ICD approval date), and March 31, 2015, was conducted...
November 1, 2016: JAMA Cardiology
https://www.readbyqxmd.com/read/27576695/tachycardia-detection-in%C3%A2-modern%C3%A2-implantable-cardioverter-defibrillators
#18
Thomas Brüggemann, Daniel Dahlke, Amin Chebbo, Ilka Neumann
Implantable cardioverter-defibrillators (ICD) have to reliably sense, detect, and treat malignant ventricular tachyarrhythmias. Inappropriate treatment of non life-threatening tachyarrhythmias should be avoided. This article outlines the functionality of ICDs developed and manufactured by BIOTRONIK. Proper sensing is achieved by an automatic sensitivity control which can be individually tailored to solve special under- and oversensing situations. The programming of detection zones for ventricular fibrillation (VF), ventricular tachycardia (VT), and zones to monitor other tachyarrhythmias is outlined...
September 2016: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/27572253/usefulness-of-testing-for-coronary-artery-spasm-and-programmed-ventricular-stimulation-in-survivors-of-out-of-hospital-cardiac-arrest
#19
Masayasu Komatsu, Jun Takahashi, Koji Fukuda, Yusuke Takagi, Takashi Shiroto, Makoto Nakano, Masateru Kondo, Ryuji Tsuburaya, Kiyotaka Hao, Kensuke Nishimiya, Taro Nihei, Yasuharu Matsumoto, Kenta Ito, Yasuhiko Sakata, Satoshi Miyata, Hiroaki Shimokawa
BACKGROUND: Optimal therapy for patients resuscitated from out-of-hospital cardiac arrest (OHCA) who are not found to have structural heart disease remains to be established, especially regarding the use of implantable cardioverter-defibrillators. Coronary artery spasm (CAS) and lethal ventricular arrhythmias are important causes of OHCA. METHODS AND RESULTS: In 47 consecutive OHCA survivors without structural heart disease who had fully recovered (M/F 44/3, 43±13 years...
September 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27568735/single-coil-defibrillator-leads-yield-satisfactory-defibrillation-safety-margin-in-hypertrophic-cardiomyopathy
#20
Hideo Okamura, Paul A Friedman, Yuko Inoue, Takashi Noda, Takeshi Aiba, Satoshi Yasuda, Hisao Ogawa, Shiro Kamakura, Kengo Kusano, Raul E Espinosa
BACKGROUND: Single-coil defibrillator leads have gained favor because of their potential ease of extraction. However, a high defibrillation threshold remains a concern in patients with hypertrophic cardiomyopathy (HCM), and in many cases, dual-coil leads have been used for this patient group. There is little data on using single-coil leads for HCM patients. METHODS AND RESULTS: We evaluated 20 patients with HCM who received an implantable cardioverter-defibrillator (ICD) on the left side in combination with a dual-coil lead...
September 23, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
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