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Implantable cardioverter defibrillator

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https://www.readbyqxmd.com/read/27913400/incidence-risk-factors-and-outcome-of-life-threatening-ventricular-arrhythmias-in-giant-cell-myocarditis
#1
Kaj Ekström, Jukka Lehtonen, Riina Kandolin, Anne Räisänen-Sokolowski, Kaisa Salmenkivi, Markku Kupari
BACKGROUND: Ventricular tachyarrhythmias are characteristic of giant cell myocarditis, but their true incidence, predictors, and outcome are unknown. METHODS AND RESULTS: Our work involved 51 patients with giant cell myocarditis (35 women) aged 52±12 years. Their medical records were reviewed for history, results of laboratory and imaging studies, and occurrence of serious cardiac events, including life-threatening ventricular tachyarrhythmias. Sudden cardiac death (fatal or aborted) was the primary end point of our analyses, whereas the composite of sudden cardiac death and ventricular tachycardia requiring treatment constituted the secondary end point...
December 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27912983/hypertrophic-obstructive-cardiomyopathy
#2
REVIEW
Josef Veselka, Nandan S Anavekar, Philippe Charron
Hypertrophic obstructive cardiomyopathy is an inherited myocardial disease defined by cardiac hypertrophy (wall thickness ≥15 mm) that is not explained by abnormal loading conditions, and left ventricular obstruction greater than or equal to 30 mm Hg. Typical symptoms include dyspnoea, chest pain, palpitations, and syncope. The diagnosis is usually suspected on clinical examination and confirmed by imaging. Some patients are at increased risk of sudden cardiac death, heart failure, and atrial fibrillation...
November 29, 2016: Lancet
https://www.readbyqxmd.com/read/27910085/sprint-fidelis-implantable-cardioverter-defibrillators-lead-patient-management-and-survival-single-center-study
#3
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
#4
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/27909495/the-wearable-cardioverter-defibrillator-toy-or-tool
#5
REVIEW
David Duncker Md, Christian Veltmann Md
After the success story of implantable cardioverter/defibrillator systems, prevention of sudden cardiac death (SCD) remains one of the main duties in cardiology. For patients with unkown or transient risk profile for SCD, a wearable cardioverter/defibrillator (WCD) has been established for temporary and effective prevention of sudden arrhythmic death. Several studies have shown safety and efficacy of the WCD, even though randomized studies proving a mortality benefit are still lacking. This review provides an overview of actual WCD data and usage, special indications and possible risks and complications...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909469/value-of-the-wearable-cardioverter-defibrillator-wcd-as-a-bridging-therapy-before-implantation-of-a-cardioverter-defibrillator-icd
#6
REVIEW
Priv- Doz, Dr Johannes Sperzel
Wearable cardioverter defibrillators (WCD), initially available in 2002, have recently experienced more routine use in many institutions as a means of preventing sudden cardiac death (SCD) prior to implantable cardioverter defibrillator (ICD) evaluation or implantation. WCD differ from ICD by their noninvasive nature, making them well suited for patient populations who have a chance for significant cardiac recovery (such as after an acute myocardial infarction). Despite their noninvasive nature, WCD treatment of sustained ventricular tachyarrhythmias is highly successful...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27908943/planning-for-deactivation-of-implantable-cardioverter-defibrillators-at-the-end-of-life-in-patients-with-heart-failure
#7
Destiny R Brady
Implantable cardioverter defibrillators (ICDs) may be burdensome in end-stage heart failure. At the end of life, as many as one-fifth to one-third of patients experience an ICD shock. Critical care nurses should be aware of the potential burden of these shocks at the end of life as well as the ethics and organizational policies surrounding ICD deactivation. This literature review examines the issues surrounding ICD therapy at the end of life. Based on this author's findings, recommendations for discussing and implementing ICD deactivation are offered...
December 2016: Critical Care Nurse
https://www.readbyqxmd.com/read/27908579/transient-elastography-in-patients-with-implanted-cardiac-rhythm-devices
#8
Mireen Friedrich-Rust, Fabian Schoelzel, Sven Linzbach, Joerg Bojunga, Stefan Zeuzem, Florian Seeger
BACKGROUND: At present the use of transient elastography (TE) in patients with pacemaker (PM) or implantable cardioverter defibrillator (ICD) devices is not recommended, since the safety due to the electromagnet embarked in the vibrator for producing the shearwave has not been evaluated. However, no adverse events of sonographic examinations in this patient group have been reported. AIMS: The aim of the present study was to evaluate the safety of TE in patients with PM or ICD...
November 17, 2016: Digestive and Liver Disease
https://www.readbyqxmd.com/read/27908173/pacemaker-and-icd-oversensing-induced-by-movements-near-the-mri-scanner-bore
#9
E Mattei, F Censi, G Calcagnini, R Falsaperla, E Genovese, A Napolitano, V Cannatà
PURPOSE: The effect of the movement near the MRI scanner bore for people with a pacemaker (PM) or an implantable cardioverter defibrillator (ICD) is experimentally evaluated and discussed. METHODS: The authors performed in vitro measurements on a saline-filled human-shaped phantom (male, 170 cm height), equipped first with an MR-conditional PM (bicameral configuration, DDD programming), then with an MR-conditional ICD (biventricular configuration, detection algorithms enable but shock delivery disable)...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27905927/characteristics-and-outcomes-of-diabetic-patients-with-an-implantable-cardioverter-defibrillator-in-a-real-world-setting-results-from-the-israeli-icd-registry
#10
Hillel Steiner, Michael Geist, Ilan Goldenberg, Mahmoud Suleiman, Michael Glikson, Alexander Tenenbaum, Moshe Swissa, Enrique Z Fisman, Gregory Golovchiner, Boris Strasberg, Alon Barsheshet
AIMS: There are limited data regarding the effect of diabetes mellitus (DM) on the risks of both appropriate and inappropriate implantable cardioverter defibrillator (ICD) therapy. The present study was designed to compare the outcome of appropriate and inappropriate ICD therapy in patients with or without DM. METHODS AND RESULTS: The risk of a first appropriate ICD therapy for ventricular tachyarrhythmias (including anti tachycardia pacing and shock) was compared between 764 DM and 1346 non-DM patients enrolled in the national Israeli ICD registry...
December 1, 2016: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/27905161/the-impact-of-co-morbidity-burden-on-appropriate-implantable-cardioverter-defibrillator-therapy-and-all-cause-mortality-insight-from-danish-nationwide-clinical-registers
#11
Anne Christine Ruwald, Michael Vinther, Gunnar H Gislason, Jens Brock Johansen, Jens Cosedis Nielsen, Helen Høgh Petersen, Sam Riahi, Christian Jons
AIMS: In a nationwide cohort of primary (PP-ICD) and secondary prevention (SP-ICD) implantable cardioverter defibrillator (ICD) patients, we aimed to investigate the association between co-morbidity burden and risk of appropriate ICD therapy and mortality. METHODS AND RESULTS: We identified all patients >18 years, implanted with first-time PP-ICD (n = 1873) or SP-ICD (n = 2461) in Denmark from 2007 to 2012. Co-morbidity was identified in administrative registers of hospitalization and drug prescription from pharmacies...
December 1, 2016: European Journal of Heart Failure
https://www.readbyqxmd.com/read/27899140/transapical-transcatheter-aortic-valve-replacement-in-patients-with-or-without-prior-coronary-artery-bypass-graft-operation
#12
Konstantinos V Voudris, S Chiu Wong, Ryan Kaple, Polydoros N Kampaktsis, Andreas R de Biasi, Jonathan S Weiss, Richard Devereux, Karl Krieger, Luke Kim, Rajesh V Swaminathan, Dmitriy N Feldman, Harsimran Singh, Nikolaos J Skubas, Robert M Minutello, Geoffrey Bergman, Arash Salemi
BACKGROUND: Transapical approach (TA) is an established access alternative to the transfemoral technique in patients undergoing transcatheter aortic valve replacement (TAVR) for treatment of symptomatic aortic valve stenosis. The impact of prior coronary artery bypass grafting (CABG) on clinical outcomes in patients undergoing TA-TAVR is not well defined. METHODS: A single center retrospective cohort analysis of 126 patients (male 41%, mean age 85.8 ± 6.1 years) who underwent TA balloon expandable TAVR (Edwards SAPIEN, SAPIEN XT or SAPIEN 3) was performed...
November 29, 2016: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27896455/erratum-to-tachycardia-detection-in-modern-implantable-cardioverter-defibrillators
#13
Thomas Brüggemann, Daniel Dahlke, Amin Chebbo, Ilka Neumann
No abstract text is available yet for this article.
December 2016: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/27895044/polymorphisms-in-the-gnas-gene-as-predictors-of-ventricular-tachyarrhythmias-and-sudden-cardiac-death-results-from-the-discovery-trial-and-oregon-sudden-unexpected-death-study
#14
Heinrich Wieneke, Jesper Hastrup Svendsen, Jeffrey Lande, Sebastian Spencker, Juan Gabriel Martinez, Bernhard Strohmer, Lauri Toivonen, Hervé Le Marec, F Javier Garcia-Fernandez, Domenico Corrado, Adriana Huertas-Vazquez, Audrey Uy-Evanado, Carmen Rusinaru, Kyndaron Reinier, Csaba Foldesi, Wieslaw Hulak, Sumeet S Chugh, Winfried Siffert
BACKGROUND: Population-based studies suggest that genetic factors contribute to sudden cardiac death (SCD). METHODS AND RESULTS: In the first part of the present study (Diagnostic Data Influence on Disease Management and Relation of Genetic Polymorphisms to Ventricular Tachy-arrhythmia in ICD Patients [DISCOVERY] trial) Cox regression was done to determine if 7 single-nucleotide polymorphisms (SNPs) in 3 genes coding G-protein subunits (GNB3, GNAQ, GNAS) were associated with ventricular tachyarrhythmia (VT) in 1145 patients receiving an implantable cardioverter-defibrillator (ICD)...
November 28, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27892420/ehealth-in-cardiovascular-medicine-a-clinical-update
#15
Hugo Saner, Enno van der Velde
Demographic changes, progress in medicine technology and regional problems in providing healthcare to low density populations are posing great challenges to our healthcare systems. Rapid progress in computer sciences and information technologies have a great impact on the way healthcare will be delivered in the near future. This article describes opportunities and challenges of eHealth and telemedicine in the framework of our health systems and, in particular, in the context of today's cardiology services. The most promising applications of eHealth and telemedicine include: (a) prevention and lifestyle interventions; (b) chronic disease management including hypertension, diabetes and heart failure; (c) arrhythmia detection including early detection of atrial fibrillation and telemonitoring of devices such as pacemaker, internal cardioverter defibrillators and implantable rhythm monitoring devices; (d) telerehabilitation...
October 2016: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/27891257/melas-syndrome-with-cardiac-involvement-a-multimodality-imaging-approach
#16
Sara Seitun, Laura Massobrio, Anna Rubegni, Claudia Nesti, Margherita Castiglione Morelli, Sara Boccalini, Athena Galletto Pregliasco, Irilda Budaj, Luca Deferrari, Gian Marco Rosa, Fabrizio Montecucco, Alberto Valbusa
A 49-year-old man presented with chest pain, dyspnea, and lactic acidosis. Left ventricular hypertrophy and myocardial fibrosis were detected. The sequencing of mitochondrial genome (mtDNA) revealed the presence of A to G mtDNA point mutation at position 3243 (m.3243A>G) in tRNA(Leu(UUR)) gene. Diagnosis of cardiac involvement in a patient with Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like episodes syndrome (MELAS) was made. Due to increased risk of sudden cardiac death, cardioverter defibrillator was implanted...
2016: Case Reports in Cardiology
https://www.readbyqxmd.com/read/27890882/a-case-of-brugada-syndrome-which-developed-status-epilepticus
#17
Misa Matsui, Kimiko Inoue, Harutoshi Fujimura, Saburo Sakoda
A 35-year-old man showed a convulsive attack with consciousness loss and was suspected of having Brugada syndrome 6 months prior to admission to our hospital. At the initial examination, the patient showed conjugate deviation, followed by left limb convulsions and consciousness loss. He regained consciousness after 1 minute, though cardiac arrest from ventricular fibrillation was noted during an electroencephalography (EEG) examination. Sinus rhythm recovered with defibrillation, though the convulsions persisted and a Status Epilepticus developed...
November 25, 2016: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/27890733/differences-in-the-onset-mode-of-ventricular-tachyarrhythmia-between-patients-with-j-wave-in-anterior-leads-versus-inferolateral-leads
#18
Tsukasa Kamakura, Mitsuru Wada, Kohei Ishibashi, Yuko Y Inoue, Koji Miyamoto, Hideo Okamura, Satoshi Nagase, Takashi Noda, Takeshi Aiba, Satoshi Yasuda, Wataru Shimizu, Shiro Kamakura, Kengo Kusano
BACKGROUND: The pathophysiological mechanism of J wave in anterior leads (A-leads) and inferolateral leads (L-leads) remains unclear. OBJECTIVE: We investigated the onset mode and circadian distribution of ventricular tachyarrhythmia (VTA) episodes in patients with early repolarization syndrome (ERS) and Brugada syndrome (BrS). METHODS: The study enrolled 35 ERS patients and 52 type 1 BrS patients with spontaneous ventricular fibrillation who were divided into four groups: ERS(A+L) (n=15), ERS patients who had non-type 1 Brugada-pattern electrocardiogram (ECG) in any A-leads (2(nd) to 4(th) intercostal spaces) in control and/or after drug provocation tests; ERS(L) (n=20), ERS with J wave only in L-leads; BrS(A) (n=24), BrS without J wave in L-leads; and, BrS(A+L) (n=28), BrS with J wave in L-leads...
November 23, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27888304/the-wearable-cardioverter-defibrillator-in-a-real-world-clinical-setting-experience-in-102-consecutive-patients
#19
Julia W Erath, Mate Vamos, Abdul Sami Sirat, Stefan H Hohnloser
BACKGROUND: The wearable cardioverter-defibrillator (WCD) is used for temporary protection of patients deemed to be at high risk for sudden death (SCD) not yet meeting indications for the implantable defibrillator (ICD). OBJECTIVES: To evaluate the efficacy, safety, and compliance of/to WCD use and subsequent medium-term outcome of patients in a single-center observational study. METHODS: A total of 102 consecutive patients were fitted with the WCD from 2012 to 2015 and followed for a mean of 11 months (±8 months)...
November 25, 2016: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/27886920/why-we-have-to-use-cardiac-resynchronization-therapy-pacemaker-more
#20
REVIEW
Jean-Claude Daubert, Raphaël Martins, Christophe Leclercq
Both cardiac resynchronization therapy with a pacemaker (CRT-P) and with a biventricular implantable cardioverter-defibrillator (CRT-D) are electrical treatment modalities validated for the management of chronic heart failure. There is no strong scientific evidence that a CRT-D must be offered to all candidates. Common sense should limit the prescription of these costly and complicated devices. The choice of CRT-P is currently acceptable. A direction to explore could be to downgrade from CRT-D to CRT-P at the time of battery depletion in patients with large reverse remodeling and no ventricular tachycardia and ventricular fibrillation detected...
January 2017: Heart Failure Clinics
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