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https://www.readbyqxmd.com/read/27860063/a-comparison-of-women-and-men-undergoing-catheter-ablation-for-sustained-monomorphic-ventricular-tachycardia
#1
Samuel H Baldinger, Saurabh Kumar, Jorge Romero, Akira Fujii, Laurence M Epstein, Gregory F Michaud, Roy John, Usha B Tedrow, William G Stevenson
INTRODUCTION: Women are underrepresented in clinical studies on catheter ablation (CA) for ventricular tachycardia (VT). The role of gender as a predictor for VT recurrence after CA is unclear and complication rates have not been compared in a large cohort. METHODS AND RESULTS: We analyzed data of consecutive patients undergoing CA for sustained monomorphic VT at our center between 2005 and 2015. A total of 948 patients underwent 1314 ablation procedures: 114 patients without SHD (48% female), 486 with coronary artery disease (CAD) (9% female), 301 with non-ischemic cardiomyopathy (NICM) (22% female), and 46 with arrhythmogenic right ventricular cardiomyopathy (ARVC) (17% female)...
November 18, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27855808/right-ventricular-imaging-and-computer-simulation-for-electromechanical-substrate-characterization-in-arrhythmogenic-right-ventricular-cardiomyopathy
#2
Thomas P Mast, Arco J Teske, John Walmsley, Jeroen F van der Heijden, René van Es, Frits W Prinzen, Tammo Delhaas, Toon A van Veen, Peter Loh, Pieter A Doevendans, Maarten J Cramer, Joost Lumens
BACKGROUND: Previous studies suggested that electrical abnormalities precede overt structural disease in arrhythmogenic right ventricular cardiomyopathy (ARVC). Abnormal RV deformation has been reported in early ARVC without structural abnormalities. The pathophysiological mechanisms underlying these abnormalities remain unknown. OBJECTIVES: The authors used imaging and computer simulation to differentiate electrical from mechanical tissue substrates among ARVC clinical stages...
November 15, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27825581/usefulness-of-combined-functional-assessment-by-cardiac-magnetic-resonance-and-tissue-characterization-versus-task-force-criteria-for-diagnosis-of-arrhythmogenic-right-ventricular-cardiomyopathy
#3
Giovanni Donato Aquaro, Andrea Barison, Giancarlo Todiere, Chrysanthos Grigoratos, Lamia Ait Ali, Gianluca Di Bella, Michele Emdin, Pierluigi Festa
Current task force criteria (TFC) of cardiac magnetic resonance (CMR) for the diagnosis of arrhythmogenic right ventricular cardiomyopathy (ARVC/D) were generated by comparing probands (mean age of 44 years) to healthy participants of the multi-ethnic study of atherosclerosis (mean age of 60 years). These age differences may be a selection bias because right ventricular end-diastolic volume index decreases 4.6% per decade. Moreover, fat infiltration and late gadolinium enhancement were not included. We evaluated the diagnostic accuracy of TFC using the same methodology used by the task force but comparing probands and age- and gender-matched healthy controls and considering also other morphofunctional and tissue abnormalities detected by CMR...
December 1, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27790640/risk-stratification-in-arrhythmic-right-ventricular-cardiomyopathy-without-implantable-cardioverter-defibrillators
#4
Francesca Brun, Judith A Groeneweg, Kathleen Gear, Gianfranco Sinagra, Jeroen van der Heijden, Luisa Mestroni, Richard N Hauer, Mark Borgstrom, Frank I Marcus, Trina Hughes
OBJECTIVES: The primary objective of this study is risk stratification of patients with arrhythmic right ventricular cardiomyopathy (ARVC). BACKGROUND: There is a need to identify those who need an automatic implantable defibrillator (ICD) to prevent sudden death. METHODS: This is an analysis of 88 patients with ARVC from three centers who were not treated with an ICD. RESULTS: Risk factors for subsequent arrhythmic deaths were pre-enrollment sustained or nonsustained ventricular tachycardia (VT) and decreased left ventricular function...
October 2016: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/27771402/moving-from-multimodality-diagnostic-tests-toward-multimodality-risk-stratification-in-arvc
#5
Arco J Teske, Thomas P Mast
No abstract text is available yet for this article.
October 14, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27771401/combination-of-ecg-and-echocardiography-for-identification-of-arrhythmic-events-in-early-arvc
#6
Ida S Leren, Jørg Saberniak, Trine F Haland, Thor Edvardsen, Kristina H Haugaa
OBJECTIVES: The aim of this study was to investigate early markers of arrhythmic events (AEs) and improve risk stratification in early arrhythmogenic right ventricular cardiomyopathy (ARVC). BACKGROUND: AEs are frequent in patients with ARVC, but risk stratification in subjects with early ARVC is challenging. METHODS: Early ARVC disease was defined as possible or borderline ARVC diagnosis according to the ARVC Task Force Criteria 2010. We performed resting and signal averaged electrocardiogram (ECG)...
October 14, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27769725/structural-and-molecular-pathology-of%C3%A2-the%C3%A2-atrium-in-boxer-arrhythmogenic-right-ventricular-cardiomyopathy
#7
J Vila, R Pariaut, N S Moïse, E M Oxford, P R Fox, C A Reynolds, C Saelinger
OBJECTIVE: To investigate the expression and distribution of desmosomal and gap junction proteins of the intercalated disc in the atria of boxers with arrhythmogenic right ventricular cardiomyopathy (ARVC). ANIMALS: Nineteen control dogs and 13 boxers with histopathologically confirmed ARVC. METHODS: Right and left atrial samples were examined using immunofluorescence and Western blots. The intercalated disc proteins investigated included total and phosphorylated connexin43 (Cx43 and pCx43), connexin45, connexin40, plakoglobin, plakophilin-2, desmoplakin, and N-cadherin...
October 18, 2016: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/27761164/the-genetic-background-of-arrhythmogenic-right-ventricular-cardiomyopathy
#8
Seiko Ohno
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is characterized by degeneration of the right ventricle and ventricular tachycardia originating from the right ventricle. Additionally, the disease is an inherited cardiomyopathy that mainly follows the autosomal dominant pattern. More than 10 genes have been reported as causative genes for ARVC, and more than half of ARVC patients carry mutations in desmosome related genes. The desmosome is one of the structures involved in cell adhesion and its disruption leads to various diseases, including a skin disease called pemphigus...
October 2016: Journal of Arrhythmia
https://www.readbyqxmd.com/read/27756409/ventricular-structure-in-arvc-going-beyond-volumes-as-a-measure-of-risk
#9
Kristin McLeod, Samuel Wall, Ida Skrinde Leren, Jørg Saberniak, Kristina Hermann Haugaa
BACKGROUND: Altered right ventricular structure is an important feature of Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC), but is challenging to quantify objectively. The aim of this study was to go beyond ventricular volumes and diameters and to explore if the shape of the right and left ventricles could be assessed and related to clinical measures. We used quantifiable computational methods to automatically identify and analyse malformations in ARVC patients from Cardiovascular Magnetic Resonance (CMR) images...
October 14, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27751343/endomyocardial-fibrosis-with-right-ventricular-aneurysm-mimicking-arvc-a-case-report-from-india
#10
Suneesh Kalliath, Rajesh Gopalan Nair, Haridasan Vellani
A 48-year-old man presented with chronic right sided heart failure. 2D echocardiography revealed the classical features of left ventricular endomyocardial fibrosis with a prominent right ventricular apical aneurysm. Right ventriculography further defined the aneurysm. Cardiac magnetic resonance images revealed a thin-walled, apical aneurysm of right ventricle with multiple septations and marked obliteration of left ventricular apex. A delayed-enhancement sequence after the infusion of contrast, demonstrated a hypersignal in the subendocardium, consistent with the right ventricular involvement of endomyocardial fibrosis...
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27747171/cardiocutaneous-syndrome-naxos-disease-in-a-bangladeshi-boy
#11
Akm Monwarul Islam, Md Toufiqur Rahman, Abu Hana Chowdhury
Naxos disease is a rare autosomal recessive form of arrhythmogenic right ventricular cardiomyopathy (ARVC) with woolly hair and palmoplantar keratoderma. The cardiomyopathy presents by adolescence with syncope, ventricular tachycardia (VT) of left bundle branch block (LBBB) morphology, and/or ventricular fibrillation. The diagnosis and management of ARVC are at present in evolution; the recently published modified Task Force Criteria for diagnosis and International Task Force consensus statement for treatment of ARVC will hopefully bring about uniformity in recognition and management of Naxos disease as well...
October 2016: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/27727587/study-of-clinical-profile-and-management-of-arvc
#12
V S Prakash, R P Varsha
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27686556/a-meta-analysis-for-echocardiographic-assessment-of-right-ventricular-structure-and-function-in-arvc
#13
M Qasem, V Utomi, K George, J Somauroo, A Zaidi, L Forsythe, S Bhattacharrya, G Lloyd, B Rana, L Ring, S Robinson, R Senior, N Sheikh, M Sitali, J Sandoval, R Steeds, M Stout, J Willis, D Oxborough
INTRODUCTION: Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) is an inherited pathology that can increase the risk of sudden death. Current Task Force Criteria for echocardiographic diagnosis do not include new, regional assessment tools which may be relevant in a phenotypically diverse disease. We adopted a systematic review and meta-analysis approach to highlight echocardiographic indices that differentiated ARVC patients and healthy controls. METHODS: Data was extracted and analysed from prospective trials that employed a case-control design meeting strict inclusion and exclusion as well as a-priori quality criteria...
September 29, 2016: Echo Research and Practice
https://www.readbyqxmd.com/read/27683155/exploration-of-pathomechanisms-triggered-by-a-single-nucleotide-polymorphism-in-titin-s-i-band-the-cardiomyopathy-linked-mutation-t2580i
#14
Julius Bogomolovas, Jennifer R Fleming, Brian R Anderson, Rhys Williams, Stephan Lange, Bernd Simon, Muzamil M Khan, Rüdiger Rudolf, Barbara Franke, Belinda Bullard, Daniel J Rigden, Henk Granzier, Siegfried Labeit, Olga Mayans
Missense single-nucleotide polymorphisms (mSNPs) in titin are emerging as a main causative factor of heart failure. However, distinguishing between benign and disease-causing mSNPs is a substantial challenge. Here, we research the question of whether a single mSNP in a generic domain of titin can affect heart function as a whole and, if so, how. For this, we studied the mSNP T2850I, seemingly linked to arrhythmogenic right ventricular cardiomyopathy (ARVC). We used structural biology, computational simulations and transgenic muscle in vivo methods to track the effect of the mutation from the molecular to the organismal level...
September 2016: Open Biology
https://www.readbyqxmd.com/read/27617087/arrhythmogenic-cardiomyopathy-electrical-and-structural-phenotypes
#15
Deniz Akdis, Corinna Brunckhorst, Firat Duru, Ardan M Saguner
This overview gives an update on the molecular mechanisms, clinical manifestations, diagnosis and therapy of arrhythmogenic cardiomyopathy (ACM). ACM is mostly hereditary and associated with mutations in genes encoding proteins of the intercalated disc. Three subtypes have been proposed: the classical right-dominant subtype generally referred to as ARVC/D, biventricular forms with early biventricular involvement and left-dominant subtypes with predominant LV involvement. Typical symptoms include palpitations, arrhythmic (pre)syncope and sudden cardiac arrest due to ventricular arrhythmias, which typically occur in athletes...
August 2016: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/27553816/my-approach-to-the-diagnosis-and-treatment-of-arrhythmogenic-right-ventricular-cardiomyopathy-dysplasia-arvc-d-%C3%A2
#16
Frank L Marcus
No abstract text is available yet for this article.
November 2016: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/27544897/revisiting-athlete-s-heart-versus-pathologic-hypertrophy-arvc-and-the-right-ventricle
#17
Barry J Maron, Bradley A Maron
No abstract text is available yet for this article.
August 11, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27512079/quantitative-non-canonical-amino-acid-tagging-quancat-proteomics-identifies-distinct-patterns-of-protein-synthesis-rapidly-induced-by-hypertrophic-agents-in-cardiomyocytes-revealing-new-aspects-of-metabolic-remodeling
#18
Rui Liu, Justin W Kenney, Antigoni Manousopoulou, Harvey E Johnston, Makoto Kamei, Christopher H Woelk, Jianling Xie, Michael Schwarzer, Spiros D Garbis, Christopher G Proud
Cardiomyocytes undergo growth and remodeling in response to specific pathological or physiological conditions. In the former, myocardial growth is a risk factor for cardiac failure and faster protein synthesis is a major factor driving cardiomyocyte growth. Our goal was to quantify the rapid effects of different pro-hypertrophic stimuli on the synthesis of specific proteins in ARVC and to determine whether such effects are caused by alterations on mRNA abundance or the translation of specific mRNAs. Cardiomyocytes have very low rates of protein synthesis, posing a challenging problem in terms of studying changes in the synthesis of specific proteins, which also applies to other nondividing primary cells...
October 2016: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/27493940/a-review-of-the-giant-protein-titin-in-clinical-molecular-diagnostics-of-cardiomyopathies
#19
REVIEW
Marta Gigli, Rene L Begay, Gaetano Morea, Sharon L Graw, Gianfranco Sinagra, Matthew R G Taylor, Henk Granzier, Luisa Mestroni
Titin (TTN) is known as the largest sarcomeric protein that resides within the heart muscle. Due to alternative splicing of TTN, the heart expresses two major isoforms (N2B and N2BA) that incorporate four distinct regions termed the Z-line, I-band, A-band, and M-line. Next-generation sequencing allows a large number of genes to be sequenced simultaneously and provides the opportunity to easily analyze giant genes such as TTN. Mutations in the TTN gene can cause cardiomyopathies, in particular dilated cardiomyopathy (DCM)...
2016: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/27474350/the-canadian-arrhythmogenic-right-ventricular-cardiomyopathy-registry-rationale-design-and-preliminary-recruitment
#20
Andrew D Krahn, Jeffrey S Healey, Brenda Gerull, Paul Angaran, Santabhanu Chakrabarti, Shubhayan Sanatani, Laura Arbour, Zachary W M Laksman, Sandra L Carroll, Colette Seifer, Martin Green, Jason D Roberts, Mario Talajic, Robert Hamilton, Martin Gardner
BACKGROUND: Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a complex and clinically heterogeneous arrhythmic condition. Incomplete penetrance and variable expressivity are particularly evident in ARVC, making clinical decision-making challenging. METHODS: Pediatric and adult cardiologists, geneticists, genetic counsellors, ethicists, nurses, and qualitative researchers are collaborating to create the Canadian ARVC registry using a web-based clinical database...
April 21, 2016: Canadian Journal of Cardiology
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