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Implantable cardiac defibrillators

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https://www.readbyqxmd.com/read/29054839/incremental-prognostic-utility-of-left-ventricular-global-longitudinal-strain-in-hypertrophic-obstructive-cardiomyopathy-patients-and-preserved-left-ventricular-ejection-fraction
#1
Albree Tower-Rader, Jorge Betancor, Zoran B Popovic, Kimi Sato, Maran Thamilarasan, Nicholas G Smedira, Harry M Lever, Milind Y Desai
BACKGROUND: In obstructive hypertrophic cardiomyopathy patients with preserved left ventricular (LV) ejection fraction, we sought to determine whether LV global longitudinal strain (LV-GLS) provided incremental prognostic utility. METHODS AND RESULTS: We studied 1019 patients with documented hypertrophic cardiomyopathy (mean age, 50±12 years; 63% men) evaluated at our center between 2001 and 2011. We excluded age <18 years, maximal LV outflow tract gradient <30 mm Hg, bundle branch block or atrial fibrillation, past pacemaker/cardiac surgery, including myectomy/alcohol ablation, and obstructive coronary artery disease...
October 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29052249/image-noise-reduction-technology-allows-significant-reduction-of-radiation-dosage-in-cardiac-device-implantation-procedures
#2
Rainer Hoffmann, Lukas Langenbrink, Doris Reimann, Mirlind Kastrati, Michael Becker, Michal Piatkowski, Jochen Michaelsen
BACKGROUND: Novel X-ray systems with real-time image noise reduction technology (INRT) to reduce radiation dose during fluoroscopy and cine acquisition have become available. This study evaluated the reduction of radiation dose in device implantation with INRT. METHODS: Radiation dose data from 132 consecutive new device implantation procedures (102 pacemaker (PM) or implantable cardioverter defibrillator (ICD) and 30 cardiac resynchronization therapy (CRT) devices) performed between 1-2015 and 12-2015 on an angiography system with INRT (Allura ClarityIQ) were collected...
October 20, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29052236/heart-failure-severity-inappropriate-icd-therapy-and-novel-icd-programming-a-madit-rit-sub-study
#3
Usama A Daimee, Katherine Vermilye, Spencer Rosero, Claudio D Schuger, James P Daubert, Wojciech Zareba, Scott McNitt, Bronislava Polonsky, Arthur J Moss, Valentina Kutyifa
BACKGROUND: The effects of heart failure (HF) severity on risk of inappropriate implantable cardioverter-defibrillator (ICD) therapy have not been thoroughly investigated. We aimed to study the association between HF severity and inappropriate ICD therapy in MADIT-RIT. METHODS: MADIT-RIT randomized 1500 patients to three ICD programming arms: conventional (Arm A), high-rate cut-off (Arm B: ≥200 bpm), and delayed therapy (Arm C: 60-second delay for ≥170 bpm)...
October 20, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29050686/gender-differences-in-cardiac-resynchronization-therapy-device-choice-and-outcome-in-patients-%C3%A2-75-years-of-age-with-heart-failure
#4
Yanting Wang, Michael S Sharbaugh, Mohammad Bilal Munir, Evan C Adelstein, Norman C Wang, Andrew D Althouse, Samir Saba
Cardiac resynchronization therapy (CRT) is an established therapy for heart failure and can be delivered through a CRT pacemaker (CRT-P) or a CRT defibrillator (CRT-D). CRT-P devices are smaller and less expensive, have better battery longevity, and have been subject to fewer recalls and advisories but cannot deliver high-energy shocks to terminate potentially lethal ventricular arrhythmias. As published guidelines do not distinguish between CRT-P and CRT-D indications, we examined the practice of prescribing these devices in older women and men with heart failure...
September 19, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29048460/cardiovascular-magnetic-resonance-imaging-in-patients-with-cardiac-implantable-electronic-devices-a-device-dependent-imaging-strategy-for-improved-image-quality
#5
Sebastian Hilbert, Cosima Jahnke, Susanne Loebe, Sabrina Oebel, Alexander Weber, Ricardo Spampinato, Sergio Richter, Michael Doering, Andreas Bollmann, Philipp Sommer, Gerhard Hindricks, Ingo Paetsch
Aims: To prospectively determine evaluability of routine cardiovascular magnetic resonance (CMR) diagnostic modules in a referral population of implanted rhythm device all-comers, and to establish a device-dependent CMR imaging strategy to achieve optimal image quality. Methods and results: One hundred and twenty-eight patients with cardiac implantable electronic devices [insertable cardiac monitoring system, n = 14; implantable loop-recorder, n = 21; pacemaker, n = 31; implantable cardioverter-defibrillator (ICD), n = 50; and cardiac resynchronization therapy defibrillator (CRT-D), n = 12] underwent clinically indicated CMR at 1...
October 18, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29047028/de-novo-implantation-vs-upgrade-cardiac-resynchronization-therapy-a-systematic-review-and-meta-analysis
#6
REVIEW
Annamaria Kosztin, Mate Vamos, Daniel Aradi, Walter Richard Schwertner, Attila Kovacs, Klaudia Vivien Nagy, Endre Zima, Laszlo Geller, Gabor Zoltan Duray, Valentina Kutyifa, Bela Merkely
Patients with conventional pacemakers or implanted defibrillators are often considered for cardiac resynchronization therapy (CRT). Our aim was to summarize the available evidences regarding the clinical benefits of upgrade procedures. A systematic literature search was performed from studies published between 2006 and 2017 in order to compare the outcome of CRT upgrade vs. de novo implantations. Outcome data on all-cause mortality, heart failure events, New York Heart Association (NYHA) Class, QRS narrowing and echocardiographic parameters were analysed...
October 19, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/29046320/mortality-and-cerebrovascular-events-following-heart-rhythm-disorder-management-procedures
#7
Justin Z Lee, Jayna Ling, Nancy N Diehl, David O Hodge, Deepak Padmanabhan, Ammar M Killu, Malini Madhavan, Peter A Noseworthy, Suraj Kapa, Christopher J McLeod, Yong-Mei Cha, Abhishek J Deshmukh, Komandoor Srivathsan, Fred M Kusumoto, Win-Kuang Shen, Paul A Friedman, Thomas M Munger, Samuel J Asirvatham, Douglas L Packer, Siva K Mulpuru
Background -Recognition of rates and causes of hard, patient-centered outcomes of death and cerebrovascular event (CVE) after heart rhythm disorder management (HRDM) procedures is an essential step for development of quality improvement programs in electrophysiology laboratories. Our primary aim was to assess and characterize death and CVE (stroke or transient ischemic attack) after HRDM procedures over a 17-year period. Methods -We performed a retrospective cohort study of all patients undergoing HRDM procedures between January 2000 and November 2016 at the Mayo Clinic...
October 18, 2017: Circulation
https://www.readbyqxmd.com/read/29045598/prognostic-value-of-pulmonary-blood-volume-by-first-pass-contrast-enhanced-cmr-in-heart-failure-outpatients-the-prove-hf-study
#8
F Ricci, A Barison, G Todiere, C Mantini, A R Cotroneo, M Emdin, R De Caterina, S Galllina, G D Aquaro
Aims: Pulmonary blood volume (PBV) is a novel clinical application of cardiovascular magnetic resonance (CMR) imaging for the quantitative grading of haemodynamic congestion. In this study, we aimed to assess the prognostic value of PBV in a cohort of outpatients with chronic heart failure (HF). Methods and results: One hundred and twelve consecutive patients (91 men, 67 ± 12 years) and 53 age- and sex-matched healthy controls underwent echocardiography and contrast-enhanced CMR...
October 17, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29045311/cardiac-resynchronization-therapy-outcomes-in-patients-with-chronic-heart-failure-cardiac-resynchronization-therapy-with-pacemaker-versus-cardiac-resynchronization-therapy-with-defibrillator
#9
Michael Drozd, John Gierula, Judith E Lowry, Maria F Paton, Eleanor Joy, Haqeel A Jamil, Richard M Cubbon, Mark T Kearney, David A Cairns, Klaus K Witte
AIMS: Cardiac resynchronization therapy (CRT) for chronic heart failure with left ventricular systolic dysfunction (LVSD) consistently improves survival against optimal medical therapy alone. Limited data exist comparing the outcomes between CRT with pacemaker (CRT-P) and with defibrillator (CRT-D). We aimed to investigate the long-term prognosis of patients who received CRT-P or CRT-D. METHODS AND RESULTS: Data were prospectively collected from consecutive patients with standard indications for CRT, who were implanted at a single large tertiary centre between 2008 and 2012...
October 16, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29042423/low-prevalence-of-inappropriate-shocks-in-patients-with-inherited-arrhythmia-syndromes-with-the-subcutaneous-implantable-defibrillator-single-center-experience-and-long-term-follow-up
#10
Boris Rudic, Erol Tülümen, Veronika Berlin, Susanne Röger, Ksenija Stach, Volker Liebe, Ibrahim El-Battrawy, Christina Dösch, Theano Papavassiliu, Ibrahim Akin, Martin Borggrefe, Jürgen Kuschyk
BACKGROUND: Up to 40% of patients with transvenous implantable cardioverter-defibrillator (ICD) experience lead-associated complications and may suffer from high complication rates when lead extraction is indicated. Subcutaneous ICD may represent a feasible alternative; however, the efficacy of the subcutaneous ICD in the detection and treatment of ventricular arrhythmias in patients with hereditary arrhythmia syndromes has not been fully evaluated. METHODS AND RESULTS: Patients with primary hereditary arrhythmia syndromes who fulfilled indication for defibrillator placement were eligible for enrollment...
October 17, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29042422/cardiac-resynchronization-therapy-using-quadripolar-versus-non-quadripolar-left-ventricular-leads-programmed-to-biventricular-pacing-with-single-site-left-ventricular-pacing-impact-on-survival-and-heart-failure-hospitalization
#11
Francisco Leyva, Abbasin Zegard, Tian Qiu, Edmund Acquaye, Gaetano Ferrante, Jamie Walton, Howard Marshall
BACKGROUND: In cardiac resynchronization therapy (CRT), quadripolar (QUAD) left ventricular (LV) leads are less prone to postoperative complications than non-QUAD leads. Some studies have suggested better clinical outcomes. METHODS AND RESULTS: Clinical events were assessed in 847 patients after CRT-pacing or CRT-defibrillation using either QUAD (n=287) or non-QUAD (n=560), programmed to single-site site LV pacing. Over a follow-up period of 3.2 years (median [interquartile range, 1...
October 17, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29037169/left-ventricular-non-compaction-cardiomyopathy-with-coronary-artery-anomaly-complicated-by-ventricular-tachycardia
#12
Gustav Mattsson, Abdullah Baroudi, Hoshmand Tawfiq, Peter Magnusson
BACKGROUND: Non-compaction cardiomyopathy (NCCM) is characterized by prominent trabeculations, deep intertrabecular recesses, and a thick non-compacted endocardial myocardium. Prevalence in the general population remains unclear, but echocardiography series report 0.05%. During fetal development muscle fibers and trabeculae should compact into a solid myocardium and when this fails, NCCM occurs. The condition is genetic, even though acquired forms have been described. Worsening myocardial dysfunction may lead to heart failure and/or arrhythmias...
October 16, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29037160/-homozygous-and-compound-heterozygous-mutation-in-3-turkish-family-with-jervell-and-lange-nielsen-syndrome-case-reports
#13
Fahrettin Uysal, Burcu Turkgenc, Guven Toksoy, Ozlem M Bostan, Elif Evke, Oya Uyguner, Cengiz Yakicier, Hulya Kayserili, Ergun Cil, Sehime G Temel
BACKGROUND: Jervell and Lange-Nielsen syndrome (JLNS) isa recessive model of long QT syndrome which might also be related to possible hearing loss. Although the syndrome has been demonstrated to be originated from homozygous or compound heterozygous mutations in either the KCNQ1 or KCNE1 genes, additional mutations in other genetic loci should be considered, particularly in malignant course patients. CASE PRESENTATIONS: Three patients were admitted into hospital due to recurrent seizures/syncope, intrauterine and postnatal bradycardia respectively; moreover all three patients had congenital sensorineural hearing-loss...
October 16, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/29037154/an-inappropriate-pacing-threshold-increase-after-repeated-electrical-storm-in-a-patient-with-implantable-cardioverter-defibrillator
#14
Ye Zhu, Xiang Gu, Chao Xu
BACKGROUND: Implantable cardioverter defibrillators (ICD) are capable of effectively terminating malignant ventricular arrhythmia and are the most effective way to prevent sudden cardiac death. However, some evidences demonstrated that both anti-tachycardia pacing (ATP) and ICD shock can also bring adverse prognosis. CASE PRESENTATION: A 66-year-old Han Chinese man with prior ICD implantation was admitted to our hospital because of frequent ICD shocks. Although intravenous amiodarone and esmolol succinate were administered daily, the patient suffered 155 episodes of VT/VF during 8 weeks after implantation...
October 16, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29036292/association-between-implantable-cardioverter-defibrillator-therapy-and-different-lead-positions-in-patients-with-cardiac-resynchronization-therapy
#15
Mads Brix Kronborg, Jens Brock Johansen, Jens Haarbo, Sam Riahi, Berit Thornvig Philbert, Ole Dan Jørgensen, Jens Cosedis Nielsen
Aims: To evaluate the impact of different right and left ventricular lead positions (RV-LP and LV-LP) on the risk of therapy for ventricular tachycardia/ventricular fibrillation in patients with a cardiac resynchronization therapy device (CRT-D). Methods and results: We performed a large nationwide cohort study on patients in Denmark receiving a CRT-D device from 2008 to 2012 from the Danish Pacemaker and implantable cardioverter defibrillator (ICD) registry. Lead positions were registered during the implantation and categorized as anterior/lateral/posterior and basal/mid-ventricular/apical for the LV-LP, and as apical/non-apical for the RV-LP...
September 27, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29033518/a-rare-experience-of-infective-residual-sheath-in-the-wall-of-the-innominate-vein-after-extraction-of-implantable-defibrillators
#16
Yuan-Hao Liu, Wei-Shiang Lin, Yi-Chang Lin, Chih-Yuan Lin, Chien-Sung Tsai, Yi-Ting Tsai
BACKGROUND: Cardiac device-related infective endocarditis is an uncommon but potentially fatal complication. Therefore, cardiac devices should be removed as soon as a device-related infection is suspected. CASE REPORT: A 56-year-old male with a history of arrhythmogenic right ventricular dysplasia with implantable cardioverter-defibrillators (ICDs) 7 years earlier and re-implantation of ICDs due to dysfunction 18 months ago presented with erosion of the ICD pocket with Pseudomonas bacteremia...
July 2017: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/29030235/impact-of-ventricular-tachycardia-ablation-on-healthcare-utilization
#17
Jeffrey R Winterfield, Alexander R Kent, Edward Karst, Nirav Dalal, Srijoy Mahapatra, T Jared Bunch, Matthew R Reynolds, David J Wilber
BACKGROUND: Catheter ablation of ventricular tachycardia (VT) has been shown to reduce the number of recurrent shocks in patients with implantable cardioverter defibrillators (ICDs). However, it remains unclear how VT ablation affects post-procedural medical and pharmaceutical usage. OBJECTIVES: The objective of this study was to investigate changes in healthcare resource utilization (HCRU) following VT ablation. METHODS: This large-scale, real-world, retrospective study used the MarketScan databases to identify patients in the U...
October 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29028784/manufacturer-change-and-risk-of-system-related-complications-after-implantable-cardioverter-defibrillator-replacement-physicians-survey-and-data-from-the-detect-long-term-complications-after-implantable-cardioverter-defibrillator-replacement-registry
#18
Mauro Biffi, Endrj Menardi, Maria L Narducci, Ernesto Ammendola, Loredana Messano, Fabrizio Giofrè, Claudia Baiocchi, Davide Saporito, Fabio Lissoni, Matteo Bertini, Attilio Pierantozzi, Gianluca Zingarini, Maurizio Malacrida, Matteo Ziacchi
AIMS: Some barriers seem to exist in changing implantable cardioverter defibrillator (ICD) manufacturer at the time of device replacement. We sought to understand the obstacles to changing ICD manufacturer within the cohort of patients enrolled in the Detect Long-term Complications After ICD Replacement Registry. METHODS: We analyzed 784 consecutive ICD/cardiac resynchronization therapy defibrillator (CRT-D) device replacements within a 1.5-year time-frame in 36 Italian centers to evaluate potential factors associated with changing manufacturers and system-related complications...
October 11, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29025554/cardiac-mr-with-late-gadolinium-enhancement-in-acute-myocarditis-with%C3%A2-preserved-systolic-function-itamy-study
#19
MULTICENTER STUDY
Giovanni Donato Aquaro, Matteo Perfetti, Giovanni Camastra, Lorenzo Monti, Santo Dellegrottaglie, Claudio Moro, Alessia Pepe, Giancarlo Todiere, Chiara Lanzillo, Alessandra Scatteia, Mauro Di Roma, Gianluca Pontone, Martina Perazzolo Marra, Andrea Barison, Gianluca Di Bella
BACKGROUND: The prognostic role of cardiac magnetic resonance (CMR) and late gadolinium enhancement (LGE) has not been clarified in acute myocarditis (AM) with preserved left ventricular (LV) ejection fraction (EF). OBJECTIVES: This study sought to evaluate the role of CMR and LGE in the prognosis of AM with preserved LVEF. METHODS: This study analyzed data from ITAMY (ITalian multicenter study on Acute MYocarditis) and evaluated CMR results from 386 patients (299 male; mean age 35 ± 15 years) with AM and preserved LVEF...
October 17, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29021862/adaptive-cardiac-resynchronization-therapy-for-dilated-cardiomyopathy-with-functional-mitral-regurgitation
#20
Yoshiki Nagata, Yoichiro Nakagawa, Yusuke Takeda, Kenji Emoto, Masaki Kinoshita, Akio Chikata, Michiro Maruyama, Kazuo Usuda
We report the case of a man in his 60s who had dilated cardiomyopathy with severe functional mitral regurgitation. Four years after a cardiac resynchronization therapy (CRT) device with an implantable cardioverter defibrillator was implanted, this device was replaced with an adaptive CRT device because of battery consumption. Seven months after replacement of this device, the left ventricular pacing to right ventricular activation and the atrioventricular delay from automatic adjustments contributed to less functional mitral regurgitation...
October 2017: Journal of Arrhythmia
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