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tachycardia-induced cardiomyopathy

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https://www.readbyqxmd.com/read/28491770/successful-treatment-of-tachycardia-induced-cardiomyopathy-secondary-to-dual-atrioventricular-nodal-nonreentrant-tachycardia-using-cryoablation
#1
Harold Rivner, Chris Healy, Raul D Mitrani
No abstract text is available yet for this article.
January 2017: HeartRhythm Case Reports
https://www.readbyqxmd.com/read/28449779/defining-tachycardia-induced-cardiomyopathy-life-in-the-fast-lane
#2
EDITORIAL
Perry Elliott
No abstract text is available yet for this article.
May 2, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28449778/histopathological-and-immunological-characteristics-of-tachycardia-induced-cardiomyopathy
#3
Karin A L Mueller, David Heinzmann, Karin Klingel, Petra Fallier-Becker, Reinhard Kandolf, Antonios Kilias, Britta Walker-Allgaier, Oliver Borst, Jörg Kumbrink, Thomas Kirchner, Harald Langer, Tobias Geisler, Jürgen Schreieck, Michael Gramlich, Meinrad Gawaz, Peter Seizer
BACKGROUND: Tachycardiomyopathy or tachycardia-induced cardiomyopathy (TCM) has been known for decades as a reversible form of nonischemic cardiomyopathy. However, its mechanism and properties remain poorly understood. OBJECTIVES: The current study investigated endomyocardial biopsy samples from patients with TCM and compared them with samples from patients with dilated cardiomyopathy (DCM) and inflammatory cardiomyopathy (ICM). METHODS: The study included 189 patients with new-onset heart failure and severely reduced ejection fraction not caused by valvular or ischemic heart disease...
May 2, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28431057/quantitative-analysis-of-pkp2-and-neighbouring-genes-in-a-patient-with-arrhythmogenic-right-ventricular-cardiomyopathy-caused-by-heterozygous-pkp2-deletion
#4
Keiko Sonoda, Seiko Ohno, Sou Otuki, Koichi Kato, Nobue Yagihara, Hiroshi Watanabe, Takeru Makiyama, Tohru Minamino, Minoru Horie
Aims: Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a disease mainly caused by desmosome gene mutations. The genetic culprit, however, remains elusive in ∼50% of ARVC patients. One of the reasons for missing genetic abnormalities is the difficulty in detecting large deletions/duplications, which are called as copy number variation (CNV) by the Sanger sequencing method. This study aimed to identify CNVs in PKP2 and a part of other desmosome genes in ARVC patients. Methods and Results: The study cohort consisted of 71 ARVC probands who were diagnosed as definite or borderline cases based on 2010 Task Force Criteria...
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
#5
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/28429499/atrial-fibrillation-patients-with-isolated-pulmonary-veins-is-sinus-rhythm-achievable
#6
Judit Szilágyi, Gregory M Marcus, Nitish Badhwar, Byron K Lee, Randall J Lee, Vasanth Vedantham, Zian H Tseng, Tomos Walters, Melvin Scheinman, Jeffrey Olgin, Edward P Gerstenfeld
BACKGROUND: The cornerstone of atrial fibrillation (AF) ablation is isolation of the pulmonary veins (PVs). Patients with recurrent AF undergoing repeat ablation usually have PV reconnection (PVr). The ablation strategy and outcome of patients undergoing repeat ablation who have persistent isolation of all PVs (PVi) at the time of repeat ablation is unknown. METHODS AND RESULTS: We studied consecutive patients with recurrent AF undergoing repeat ablation and compared patients with PVi to those with PVr...
April 21, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28371837/characterization-of-the-arrhythmogenic-substrate-in-patients-with-arrhythmogenic-right-ventricular-cardiomyopathy-undergoing-ventricular-tachycardia-ablation
#7
Senthil Kirubakaran, Caterina Bisceglia, John Silberbauer, Teresa Oloriz, Giulia Santagostino, Miki Yamase, Giuseppe Maccabelli, Nicola Trevisi, Paolo Della Bella
Aims: Arrhythmogenic right ventricular (RV) cardiomyopathy (ARVC) is associated with ventricular arrhythmias, even without RV structural disease. We aimed to characterize the RV substrate using electroanatomical mapping and to define outcomes following ventricular tachycardia (VT) ablation in patients with and without RV structural abnormalities. Methods and results: Twenty-nine patients with definite or suspected ARVC undergoing VT ablation were classified as 'electrical' and 'structural' cardiomyopathy based on the absence or presence of major structural criteria...
March 20, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28363618/extracorporeal-cpr-and-intra-aortic-balloon-pumping-in-tachycardia-induced-cardiomyopathy-complicating-cardiac-arrest
#8
Jun Wan Lee, Hong Joon Ahn, Youn Ho Yoo, Jin Woong Lee, Seung Whan Kim, Si Wan Choi
Although tachycardia-induced cardiomyopathy (TIC) due to atrial fibrillation occurs frequently, it is under-recognized in clinical settings. TIC has a wide range of clinical manifestations, from asymptomatic tachycardia to cardiomyopathy leading to end stage heart failure. We present a case of a 48year-old-woman who presented as cardiogenic shock, and rapidly progressed to cardiac arrest from recently diagnosed but undertreated atrial fibrillation, resulting TIC in the emergency department (ED). She was rescued by extracorporeal cardiopulmonary resuscitation (E-CPR) for refractory cardiac arrest in the ED, and received concomitant intra-aortic balloon counterpulsation (IABP) support for severe left ventricular failure...
March 22, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28350861/efficacy-and-effects-on-cardiac-function-of-radiofrequency-catheter-ablation-vs-direct-current-cardioversion-of-persistent-atrial-fibrillation-with-left-ventricular-systolic-dysfunction
#9
Maojing Wang, Shanglang Cai, Wei Ding, Yujie Deng, Qing Zhao
OBJECTIVE: To evaluate the effect of catheter ablation vs. direct current synchronized cardioversion (DCC) in patients with persistent atrial fibrillation (AF) and left ventricular systolic dysfunction, and to define baseline features of patients that will get more benefit from ablation. METHODS: From July 2013 to October 2014, 97 consecutive single-center patients with persistent AF and symptomatic heart failure (left ventricular ejection fraction (LVEF) <50%) underwent DCC followed by amiodarone (n = 40) or circumferential pulmonary vein isolation (PVI; n = 57) according to patient's preference were recruited in the study...
2017: PloS One
https://www.readbyqxmd.com/read/28329164/large-animal-model-of-functional-tricuspid-regurgitation-in-pacing-induced-end-stage-heart-failure
#10
Marcin Malinowski, Alistair G Proudfoot, David Langholz, Lenora Eberhart, Michael Brown, Hans Schubert, Jeremy Wodarek, Tomasz A Timek
OBJECTIVES: Functional tricuspid regurgitation (FTR) is common in patients with advanced heart failure and frequently complicates left ventricular assist device implantation yet remains poorly understood. We set out to establish large animal model of FTR that could serve as a research platform to investigate the pathogenesis of FTR associated with end-stage heart failure. METHODS: : Through right thoracotomy, ten adult sheep underwent implantation of pacemaker with epicardial LV lead, five sonomicrometry crystals on the right ventricle, and left and right ventricular telemetry pressure sensors during a beating heart off-pump procedure...
February 21, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28290856/-chronic-heart-failure-with-preserved-systolic-function-and-reversible-dilatation-of-cardiac-chambers
#11
O V Blagova, S V Volkov, A V Nedostup, A O Korobkov, I V Mostovoy, N G Sergushina, N V Gagarina, E A Mershina
Diagnosis of dilation (D) cardiomyopathy (CMP) requires exclusion not only of inflammatory and genetically determined forms but also of some rare diseases. This 51 year old patient with history of moderate arterial hypertension approached a cardiologist because of new onset atrial fibrillation and dyspnea. Echocardiography detected dilation of all cardiac chambers with relatively preserved ejection fraction, causing suspicion of DCMP. Among conditions excluded were coronary atherosclerosis, congenital heart defect with left to right shunt, primary pulmonary hypertension, pulmonary embolism, hypertensive heart, tachycardia induced CMP, arrhythmogenic right ventricular dysplasia, noncompaction myocardium...
June 2016: Kardiologiia
https://www.readbyqxmd.com/read/28275069/atrial-arrhythmias-and-electroanatomical-remodeling-in-patients-with-left-ventricular-assist-devices
#12
Amrish Deshmukh, Gene Kim, Martin Burke, Emeka Anyanwu, Valluvan Jeevanandam, Nir Uriel, Roderick Tung, Cevher Ozcan
BACKGROUND: The incidence, predictors, and impact of atrial arrhythmias along with left atrial structural changes in patients with left ventricular assist devices (LVADs) remain undetermined. METHODS AND RESULTS: All patients who underwent LVAD implantation from 2008 to 2015 at the University of Chicago Medical Center were included. Electronic medical records, electrocardiograms, echocardiograms, and cardiac electrical device interrogations were reviewed. The association of arrhythmias and clinical covariates with survival was evaluated by Kaplan-Meier and Cox proportional hazards analyses...
March 8, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28270260/what-is-the-diagnostic-value-of-the-paediatric-exercise-tolerance-test-results-from-a-uk-centre
#13
Magdalena A Sajnach-Menke, Sarah C Walpole
Purpose The aim of this study was to determine whether the exercise tolerance test can provide diagnostic and prognostic information regarding children and young adults and help predict outcome. METHODS: A total of 87 patients, aged 7-29 years (median 13, mean 13.4) were selected retrospectively. They underwent exercise test at the Freeman Hospital from December, 2015 to May, 2016. There were two groups of patients - 46 had symptoms such as chest pain, palpitations, syncope, or dyspnoea on exertion and no cardiac diagnosis, and 40 patients had a cardiac diagnosis such as hypertrophic cardiomyopathy, transposition of the great arteries with post-arterial switch operation, aortic stenosis or regurgitation, tetralogy of Fallot, abnormal coronary arteries, Wolff-Parkinson-White syndrome, or supraventricular tachycardia...
March 8, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28215569/cardiac-phenotype-and-long-term-prognosis-of-arrhythmogenic-right-ventricular-cardiomyopathy-dysplasia-patients-with-late-presentation
#14
Aditya Bhonsale, Anneline S J M Te Riele, Abhishek C Sawant, Judith A Groeneweg, Cynthia A James, Brittney Murray, Crystal Tichnell, Thomas P Mast, Michelle J van der Pols, Maarten J M Cramer, Dennis Dooijes, Jeroen F van der Heijden, Harikrishna Tandri, J Peter van Tintelen, Daniel P Judge, Richard N W Hauer, Hugh Calkins
BACKGROUND: The clinical profile of arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) patients with late presentation is unknown. OBJECTIVE: The purpose of this study was to characterize the genotype, cardiac phenotype, and long-term outcomes of ARVC/D patients with late presentation (age ≥50 years at diagnosis). METHODS: Five hundred two patients with an ARVC/D diagnosis from Johns Hopkins and Utrecht Registries were studied and long-term clinical outcomes ascertained...
February 12, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28153106/isolated-subepicardial-right-ventricular-outflow-tract-scar-in-athletes-with-ventricular%C3%A2-tachycardia
#15
Jeroen Venlet, Sebastiaan R D Piers, Jan D H Jongbloed, Alexander F A Androulakis, Yoshihisa Naruse, Dennis W den Uijl, Gijsbert F L Kapel, Marta de Riva, J Peter van Tintelen, Daniela Q C M Barge-Schaapveld, Martin J Schalij, Katja Zeppenfeld
BACKGROUND: High-level endurance training has been associated with right ventricular pathological remodeling and ventricular tachycardia (VT). Although overlap with arrhythmogenic right ventricular cardiomyopathy (ARVC) has been suggested, the arrhythmogenic substrate for VTs in athletes is unknown. OBJECTIVES: The goal of this study was to evaluate whether electroanatomic scar patterns related to sustained VT can distinguish exercise-induced arrhythmogenic remodeling from ARVC and post-inflammatory cardiomyopathies...
February 7, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28122031/long-term-outcomes-of-radio-frequency-catheter-ablation-on-ventricular-tachycardias-due-to-arrhythmogenic-right-ventricular-cardiomyopathy-a-single-center-experience
#16
Wei Wei, Hongtao Liao, Yumei Xue, Xianhong Fang, Jun Huang, Yang Liu, Hai Deng, Yuanhong Liang, Zili Liao, Fangzhou Liu, Weidong Lin, Xianzhang Zhan, Shulin Wu
AIMS: To summarize our experience of radiofrequency catheter ablation (RFCA) for recurrent drug-refractory ventricular tachycardias (VTs) due to arrhythmogenic right ventricular cardiomyopathy (ARVC) in our center over the past 11 years and its related factors. METHODS AND RESULTS: We reviewed 48 adults (mean age 39.9 ± 12.9 years, range: 14 to 65) who met the present ARVC diagnostic criteria and accepted RFCA for VTs from December 2004 to April 2016. The patients received a total of 70 procedures using two ablation approaches, the endocardial approach in 52 RFCAs, and the combined epicardial and endocardial approach (the combined approach) in 18 RFCAs...
2017: PloS One
https://www.readbyqxmd.com/read/28100964/comparative-efficacy-of-nebivolol-and-metoprolol-to-prevent-tachycardia-induced-cardiomyopathy-in-a-porcine-model
#17
Alireza Nazeri, MacArthur A Elayda, Ana Maria Segura, Raymond F Stainback, Joanna Nathan, Vei-Vei Lee, Christina Bove, Luiz Sampaio, Brian Grace, Ali Massumi, Mehdi Razavi
Chronic tachycardia is a well-known cause of nonischemic cardiomyopathy. We hypothesized that nebivolol, a β-blocker with nitric oxide activity, would be superior to a pure β-blocker in preventing tachycardia-induced cardiomyopathy in a porcine model. Fifteen healthy Yucatan pigs were randomly assigned to receive nebivolol, metoprolol, or placebo once a day. All pigs underwent dual-chamber pacemaker implantation. The medication was started the day after the pacemaker implantation. On day 7 after implantation, each pacemaker was set at atrioventricular pace (rate, 170 beats/min), and the pigs were observed for another 7 weeks...
December 2016: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28073660/effectiveness-of-subcutaneous-implantable-cardioverter-defibrillator-testing-in-patients-with-hypertrophic-cardiomyopathy
#18
Niccoló Maurizi, Ilaria Tanini, Iacopo Olivotto, Ernesto Amendola, Giuseppe Limongelli, Maria Angela Losi, Giuseppe Allocca, Giovanni Battista Perego, Paolo Pieragnoli, Giuseppe Ricciardi, Paolo De Filippo, Paola Ferrari, Giovanni Quarta, Stefano Viani, Antonio Rapacciuolo, Maria Grazia Bongiorni, Franco Cecchi
BACKGROUND: Subcutaneous ICD (S-ICD) is a promising option for Hypertrophic Cardiomyopathy (HCM) patients at risk of Sudden Cardiac Death (SCD). However, its effectiveness in terminating ventricular arrhythmias in HCM is yet unresolved. METHODS: Consecutive HCM patients referred for S-ICD implantation were prospectively enrolled. Patients underwent one or two attempts of VF induction by the programmer. Successful conversion was defined as any 65J shock that terminated VF (not requiring rescue shocks)...
March 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/27986330/making-the-quick-diagnosis-a-case-of-neonatal-shock
#19
Mike Gardiner, Timothy K Ruttan, Andrew J Kienstra, Matthew Wilkinson
BACKGROUND: The work-up and initial management of a critically ill neonate is challenging and anxiety provoking for the Emergency Physician. While sepsis and critical congenital heart disease represent a large proportion of neonates presenting to the Emergency Department (ED) in shock, there are several additional etiologies to consider. Underlying metabolic, endocrinologic, gastrointestinal, neurologic, and traumatic disorders must be considered in a critically ill infant. Several potential etiologies will present with nonspecific and overlapping signs and symptoms, and the diagnosis often is not evident at the time of ED assessment...
April 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27932153/a-heartbreaking-renal-transplantation-is-norepinephrine-the-culprit-to-blame
#20
M G Vailas, S Vernadakis, K Kakavia, I Paizis, J Bokos, J Boletis, G Zavos
INTRODUCTION: Takotsubo cardiomyopathy (TCM), also known as "broken heart syndrome," "apical ballooning syndrome," and "stress-induced cardiomyopathy," was first described in Japanese patients in 1990 by Sato et al. TCM is an increasingly recognized syndrome characterized by transient and reversible systolic dysfunction of the apical and middle segments of the left ventricle. This syndrome resembles acute myocardial infarction in the absence of evident coronary artery occlusion. Herein, we present a case of a 51-year-old male who underwent his second deceased-donor renal transplantation for end-stage-renal-disease due to a work-related accident...
November 2016: Transplantation Proceedings
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