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Cardiac defibrillators

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https://www.readbyqxmd.com/read/28435494/the-efficacy-of-lucas-in-prehospital-cardiac-arrest-scenarios-a-crossover-mannequin-study
#1
Robert A Gyory, Scott E Buchle, David Rodgers, Jeffrey S Lubin
INTRODUCTION: High-quality cardiopulmonary resuscitation (CPR) is critical for successful cardiac arrest outcomes. Mechanical devices may improve CPR quality. We simulated a prehospital cardiac arrest, including patient transport, and compared the performance of the LUCAS™ device, a mechanical chest compression-decompression system, to manual CPR. We hypothesized that because of the movement involved in transporting the patient, LUCAS would provide chest compressions more consistent with high-quality CPR guidelines...
April 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28432849/upper-extremity-deep-venous-thrombosis-and-stenosis-after-implantation-of-pacemakers-and-defibrillators-a-prospective-study
#2
Morteza Safi, Mohammad Ali Akbarzadeh, Azadeh Azinfar, Mohammad Hasan Namazi, Isa Khaheshi
BACKGROUND: Obstruction of the access vein following cardiac pacemaker and defibrillator implantation is a common complication. However, the exact incidence and contributing risk factors are unknown. The aim of this study is to determine the incidence and analyze the contribution of each risk factor. METHODS: 57 consecutive patients candidate for their first transvenous pacemaker, implantable cardioverter-defibrillator (ICD), or cardiac resynchronization therapy device implantation were enrolled...
April 22, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28432794/posttraumatic-stress-and-anxiety-in-patients-with-an-implantable-cardioverter-defibrillator-trajectories-and-vulnerability-factors
#3
M Habibović, J Denollet, S S Pedersen
BACKGROUND: Implantable cardioverter defibrillator (ICD) therapy is first-line treatment for the primary and secondary prevention of sudden cardiac death. Despite the unequivocal medical benefits, living with an ICD may affect patients' psychological functioning and general well-being. We examined the trajectories of symptoms of posttraumatic stress disorder (PTSD) and anxiety in patients with an ICD and the vulnerability factors associated with an increased risk of symptoms of PTSD and anxiety...
April 22, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28431724/retrosternal-implantation-of-the-cardioverter-defibrillator-lead-in-an-infant
#4
Hiroaki Hata, Naokata Sumitomo, Toshiko Nakai, Atsushi Amano
Using an implantable cardioverter-defibrillator (ICD) in small children is still challenging, but the need is increasing. We present a new approach to overcoming ICD problems caused by growth in infants. A redundant ICD lead was fixed to the superior border of the sternum and tunneled retrosternally to the subxiphoid region for connection to the generator, which was placed in a pocket beneath the left transversus abdominis muscle. The redundant retrosternal part of the lead straightened during growth, while cardiac coverage by the cardioversion energy field and the defibrillation vector were maintained appropriately...
May 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28431077/implantable-cardioverter-defibrillator-use-for-primary-prevention-in-ischaemic-and-non-ischaemic-heart-disease-indications-in-the-post-danish-trial-era-results-of-the-european-heart-rhythm-association-survey
#5
Kristina H Haugaa, Roland Tilz, Serge Boveda, Dan Dobreanu, Elena Sciaraffia, Jacques Mansourati, Giorgi Papiashvili, Nikolaos Dagres
Implantable cardioverter-defibrillator (ICD) is the standard of care for prevention of sudden cardiac death (SCD) in high-risk patients. For primary prevention of SCD, in patients with ischaemic heart disease, there is more robust data on the effect of ICD therapy compared with patients with non-ischaemic heart disease, but current real-life practice may differ substantially. The aim of this European Heart Rhythm Association survey was to evaluate the clinical practice regarding implantation of ICD for primary prevention among European countries in patients with non-ischaemic and ischaemic heart disease...
April 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28431061/high-prevalence-of-arrhythmic-and-myocardial-complications-in-patients-with-cardiac-glycogenosis-due-to-prkag2-mutations
#6
Julien Thevenon, Gabriel Laurent, Flavie Ader, Pascal Laforêt, Didier Klug, Anju Duva Pentiah, Laurent Gouya, Claude Alain Maurage, Salem Kacet, Jean-Christophe Eicher, Juliette Albuisson, Michel Desnos, Eric Bieth, Denis Duboc, Laurent Martin, Patricia Réant, François Picard, Claire Bonithon-Kopp, Elodie Gautier, Christine Binquet, Christel Thauvin-Robinet, Laurence Faivre, Patrice Bouvagnet, Philippe Charron, Pascale Richard
Aims: Mutations in PRKAG2, the gene encoding for the γ2 subunit of 5'-AMP-activated protein kinase (AMPK), are responsible for an autosomal dominant glycogenosis with a cardiac presentation, associating hypertrophic cardiomyopathy (HCM), ventricular pre-excitation (VPE), and progressive heart block. The aim of this study was to perform a retrospective time-to-event study of the clinical manifestations associated with PRKAG2 mutations. Methods and Results: A cohort of 34 patients from 9 families was recruited between 2001 and 2010...
April 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28431056/long-term-outcome-of-transvenous-pacemaker-implantation-in-infants-a-retrospective-cohort-study
#7
Laura M Vos, Janneke A E Kammeraad, Matthias W Freund, Andreas C Blank, Johannes M P J Breur
Aim: Evaluation of long-term outcome of transvenous pacemaker (PM) implantation in infants. Methods and Results: A retrospective analysis of all transvenous PM implantations in infants <10 kg between September 1997 and October 2001 was made. Indications for PM implantation, age at implantation, and determinants of long-term outcome including cardiac function, PM function, and PM (system) complications were noted. Seven patients underwent transvenous VVI(R) PM implantation...
April 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28431051/safety-long-term-outcomes-and-predictors-of-recurrence-after-first-line-combined-endoepicardial-ventricular-tachycardia-substrate-ablation-in-arrhythmogenic-cardiomyopathy-impact-of-arrhythmic-substrate-distribution-pattern-a-prospective-multicentre-study
#8
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)...
April 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28431009/artefact-free-late-gadolinium-enhancement-imaging-in-patients-with-implanted-cardiac-devices-using-a-modified-broadband-sequence-current-strategies-and-results-from-a-real-world-patient-cohort
#9
Sebastian Hilbert, Alexander Weber, Kay Nehrke, Peter Börnert, Bernhard Schnackenburg, Sabrina Oebel, Ricardo Spampinato, Cathleen Rogge, Sergio Richter, Gerhard Hindricks, Ingo Paetsch, Cosima Jahnke
Aims: Cardiac magnetic resonance (CMR) imaging in patients with implanted cardiac devices is often limited by device-related imaging artefacts. Limitations can potentially be overcome by employing a broadband late gadolinium enhancement (LGE)-CMR imaging technique. The purpose of this study was to investigate the relationship between implanted cardiac devices and the optimal frequency offset on broadband LGE-CMR imaging to increase the artefact-free visibility of myocardial segments. Methods and results: A phantom study was performed to characterize magnetic field disturbances related to 15 different cardiac devices...
April 18, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28430113/should-physicians-instead-of-industry-representatives-be-the-main-actor-of-cardiac-implantable-electronic-device-follow-up-super-follow-up
#10
Çağın Mustafa Üreyen, Cem Yunus Baş, İsa Öner Yüksel, Görkem Kuş, Göksel Çağırcı, Şakir Arslan
OBJECTIVE: This retrospective study sought to research the adequacy of the follow-up and optimization of cardiac implantable electronic devices (CIEDs) performed by industry representatives. METHODS: A total of 403 consecutive patients (35% females; median age, 67 years; age range 18-97 years) with either pacemakers (n=246), implantable cardioverter-defibrillators (ICDs), (n=117) or cardiac resynchronization therapy with defibrillator (CRT-D) (n=40) applied to our hospital's outpatient pacemaker clinic for follow-up...
April 19, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28429529/impaired-left-atrial-function-predicts-inappropriate-shocks-in-primary-prevention-implantable-cardioverter-defibrillator-candidates
#11
Susumu Tao, Hiroshi Ashikaga, Luisa A Ciuffo, Kihei Yoneyama, Joao A C Lima, Terry F Frank, Robert G Weiss, Gordon F Tomaselli, Katherine C Wu
INTRODUCTION: Inappropriate implantable cardioverter-defibrillator (ICD) shocks, commonly caused by atrial fibrillation (AF), are associated with an increased mortality. Because impaired left atrial (LA) function predicts development of AF, we hypothesized that impaired LA function predicts inappropriate shocks beyond a history of AF. METHODS AND RESULTS: We prospectively analyzed the association between LA function and incident inappropriate shocks in primary prevention ICD candidates...
April 21, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28428489/superior-rhythm-discrimination-with-the-smartshock-technology-algorithm%C3%A3-results-of-the-implantable-defibrillator-with-enhanced-features-and-settings-for-reduction-of-inaccurate-detection-defense-trial
#12
Yasushi Oginosawa, Ritsuko Kohno, Toshihiro Honda, Kan Kikuchi, Masatsugu Nozoe, Takayuki Uchida, Hitoshi Minamiguchi, Koichiro Sonoda, Masahiro Ogawa, Takeshi Ideguchi, Yoshihisa Kizaki, Toshihiro Nakamura, Kageyuki Oba, Satoshi Higa, Keiki Yoshida, Soichi Tsunoda, Yoshihisa Fujino, Haruhiko Abe
BACKGROUND: Shocks delivered by implanted anti-tachyarrhythmia devices, even when appropriate, lower the quality of life and survival. The new SmartShock Technology(®)(SST) discrimination algorithm was developed to prevent the delivery of inappropriate shock. This prospective, multicenter, observational study compared the rate of inaccurate detection of ventricular tachyarrhythmia using the SST vs. a conventional discrimination algorithm.Methods and Results:Recipients of implantable cardioverter defibrillators (ICD) or cardiac resynchronization therapy defibrillators (CRT-D) equipped with the SST algorithm were enrolled and followed up every 6 months...
April 20, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28427578/implantable-cardioverter-defibrillators-with-versus-without-resynchronization-therapy-in-patients-with-a-qrs-duration%C3%A2-180-ms
#13
Varun Sundaram, Jayakumar Sahadevan, Albert L Waldo, George J Stukenborg, Yogesh N V Reddy, Samuel J Asirvatham, Judith A Mackall, Anselma Intini, Brigid Wilson, Daniel I Simon, Kenneth C Bilchick
BACKGROUND: More than 20% of Medicare beneficiaries receiving cardiac resynchronization therapy defibrillators (CRT-D) have a very wide (≥180 ms) QRS complex duration (QRSD). Outcomes of CRT-D in these patients are not well-established because they have been underrepresented in clinical trials. OBJECTIVES: This study examined outcomes in patients with CRT-D in a very wide QRSD with left bundle branch block (LBBB) versus those without LBBB. METHODS: Medicare patients from the Implantable Cardioverter Defibrillator Registry (January 1, 2005, through April 30, 2006) with a CRT-D and confirmed Class I or IIa indications for CRT-D were matched to implantable cardioverter-defibrillator (ICD) patients without CRT despite having Class I or IIa indications for CRT...
April 25, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28419217/shock-efficacy-of-single-and-dual-coil-electrodes-new-insights-from-the-nordic-icd-trial
#14
Dietmar Bänsch, Hendrik Bonnemeier, Johan Brandt, Frank Bode, Jesper Hastrup Svendsen, Oliver Ritter, Johannes Aring, Klaus-Jürgen Gutleben, Ralph Schneider, Angelika Felk, Tino Hauser, Anika Buchholz, Gerhard Hindricks, Karl Wegscheider
Aims: Dual coil (DC) electrodes are preferred to single coil (SC) electrodes because of an assumed higher shock efficacy. However, DC-electrodes may be associated with an increased difficulty and risk of lead extraction. We aimed to compare SC- and DC-electrodes with respect to the first shock efficacy (FSE) after implantable cardioverter defibrillator (ICD) implantation. Methods and results: One thousand and seventy-seven patients of the NORDIC ICD trial were randomly assigned to first time ICD implantation with or without defibrillation (DF) testing...
April 13, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28417288/troponin-t-elevation-after-permanent-pacemaker-implantation
#15
Xueying Chen, Ziqing Yu, Jin Bai, Shulan Hu, Wei Wang, Shengmei Qin, Jingfeng Wang, Zhe Sun, Yangang Su, Junbo Ge
PURPOSE: The objective of the study is to study the incidence, significance, and factors associated with cardiac troponin T (CTNT) elevation after pacemaker implantation. METHODS: Three hundred seventy-four patients (104 single-chamber pacemakers or ICD, 243 dual-chamber pacemakers, and 27 cardiac resynchronization therapy/cardiac resynchronization therapy defibrillator) who had normal levels of CTNT at baseline and underwent implantation of a permanent pacemaker system were included in this study...
April 18, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28416981/relationship-between-right-and-left-ventricular-function-in-candidates-for-implantable-cardioverter-defibrillator-with-low-left-ventricular-ejection-fraction
#16
Laura Jimenez-Juan, Gauri R Karur, Kim A Connelly, Djeven Deva, Raymond T Yan, Rachel M Wald, Sheldon Singh, General Leung, Anastasia Oikonomou, Paul Dorian, Paul Angaran, Andrew T Yan
BACKGROUND: Indications for the primary prevention of sudden death using an implantable cardioverter defibrillator (ICD) are based predominantly on left ventricular ejection fraction (LVEF). However, right ventricular ejection fraction (RVEF) is also a known prognostic factor in a variety of structural heart diseases that predispose to sudden cardiac death. We sought to investigate the relationship between right and left ventricular parameters (function and volume) measured by cardiovascular magnetic resonance (CMR) among a broad spectrum of patients considered for an ICD...
April 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28413854/use-of-a-pocket-compression-device-for-the-prevention-and-treatment-of-pocket-hematoma-after-pacemaker-and-defibrillator-implantation-stop-hematoma-i
#17
Mohit K Turagam, Darbhamulla V Nagarajan, Krzysztof Bartus, Akash Makkar, Vijay Swarup
BACKGROUND: Pocket hematoma is a recognized complication after placement of cardiac implantable electronic devices and is associated with increased device infection, length of hospitalization, and morbidity especially with uninterrupted antiplatelet agents and anticoagulants. We assessed the use of a post-surgical vest to decrease the incidence of pocket hematoma in patients undergoing device implantation with uninterrupted antiplatelet and anticoagulants. METHODS: In this observational study, a vest was used by 20 consecutive patients who were compared to 20 age-, gender-, procedure-matched patients who received standard care...
April 17, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28411139/the-quidam-study-hydroquinidine-therapy-in-the-management-of-brugada-syndrome-patients-at-high-arrhythmic-risk
#18
Antoine Andorin, Jean-Baptiste Gourraud, Jacques Mansourati, Swanny Fouchard, Hervé le Marec, Philippe Maury, Philippe Mabo, Jean-Sylvain Hermida, Jean-Claude Deharo, Beatrice Delasalle, Simon Esnault, Nicolas Sadoul, Jean-Marc Davy, Antoine Leenhardt, Didier Klug, Pascal Defaye, Dominique Babuty, Frédéric Sacher, Vincent Probst
BACKGROUND: Although the implantable cardiac defibrillator (ICD) remains the main therapy in Brugada syndrome (BrS), it does not reduce life-threatening ventricular arrhythmia. Based on pathophysiological mechanisms, hydroquinidine (HQ) has been suggested for the effective prevention of arrhythmia. OBJECTIVE: To provide evidence-based data supporting HQ use to prevent life threatening ventricular arrhythmia in high-risk patients with BrS. METHODS: We performed a prospective multicentre randomised (HQ vs...
April 11, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28409519/off-line-analysis-of-electro-anatomical-mapping-in-ventricular-arrhythmias
#19
Daniele Muser, Jackson J Liang, Pasquale Santangeli
Sudden cardiac death due to ventricular tachycardia (VT) is a major health issue in patients with structural heart disease and depressed ejection fraction. If from one side, implantable cardioverter defibrillator (ICD) therapy has significantly improved survival of these patients, on the other hand, it has led to frequent ICD shocks as an emerging problem, being associated with poor quality of life, frequent hospitalizations and increased mortality. Scar-related reentry due to the coexistence of surviving myocardial fibers within fibrotic tissue is the most common mechanism subtending VT both in ischemic and non-ischemic cardiomyopathies...
April 12, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28409011/utility-of-t-wave-amplitude-as-a-non-invasive-risk-marker-of-sudden-cardiac-death-in-hypertrophic-cardiomyopathy
#20
Alan Sugrue, Ammar M Killu, Christopher V DeSimone, Anwar A Chahal, Josh C Vogt, Vaclav Kremen, JoJo Hai, David O Hodge, Nancy G Acker, Jeffrey B Geske, Michael J Ackerman, Steve R Ommen, Grace Lin, Peter A Noseworthy, Peter A Brady
OBJECTIVE: Sudden cardiac arrest (SCA) is the most devastating outcome in hypertrophic cardiomyopathy (HCM). We evaluated repolarisation features on the surface electrocardiogram (ECG) to identify the potential risk factors for SCA. METHODS: Data was collected from 52 patients with HCM who underwent implantable cardioverter defibrillator (ICD) implantation. Leads V2 and V5 from the ECG closest to the time of ICD implant were utilised for measuring the Tpeak-Tend interval (Tpe), QTc, Tpe/QTc, T-wave duration and T-wave amplitude...
2017: Open Heart
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