نتایج جستجو برای: rvot

تعداد نتایج: 491  

2015
Koonlawee Nademanee Hariharan Raju Sofia V. de Noronha Michael Papadakis Laurence Robinson Stephen Rothery Naomasa Makita Shinya Kowase Nakorn Boonmee Vorapot Vitayakritsirikul Samrerng Ratanarapee Sanjay Sharma Allard C. van der Wal Michael Christiansen Hanno L. Tan Arthur A. Wilde Akihiko Nogami Mary N. Sheppard Gumpanart Veerakul Elijah R. Behr

BACKGROUND The right ventricular outflow tract (RVOT) is acknowledged to be responsible for arrhythmogenesis in Brugada syndrome (BrS), but the pathophysiology remains controversial. OBJECTIVES This study assessed the substrate underlying BrS at post-mortem and in vivo, and the role for open thoracotomy ablation. METHODS Six whole hearts from male post-mortem cases of unexplained sudden dea...

Journal: :European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 2014
Konstantin Valentinovitch Borisov

I thank Alpat and Yilmaz [1] for their interest in my article published in the journal. It is my pleasure to respond. In our hypertrophic obstructive cardiomyopathy (HOCM) group with severe hypertrophy and obstruction of the right ventricular outflow tract (RVOT), we had no cases with severe mitral incompetence [2]. A systolic anterior movement of the mitral valve (SAM) after surgery was noted ...

Journal: :Journal of the American College of Cardiology 2005
Takashi Noda Wataru Shimizu Atsushi Taguchi Takeshi Aiba Kazuhiro Satomi Kazuhiro Suyama Takashi Kurita Naohiko Aihara Shiro Kamakura

OBJECTIVES The aim of this study was to assess the clinical characteristics and the efficacy of radiofrequency catheter ablation (RFCA) for idiopathic ventricular fibrillation (VF) and/or polymorphic ventricular tachycardia initiated by ventricular extrasystoles originating from the right ventricular outflow tract (RVOT). BACKGROUND Ventricular fibrillation and/or polymorphic ventricular tach...

2013
Byung Won Yoo Han Ki Park

Repair of tetralogy of Fallot (TOF) has shown excellent outcomes. However it leaves varying degrees of residual hemodynamic impairment, with severe pulmonary stenosis (PS) and free pulmonary regurgitation (PR) at both ends of the spectrum. Since the 1980s, studies evaluating late outcomes after TOF repair revealed the adverse impacts of residual chronic PR on RV volume and function; thus, a tur...

Journal: :Circulation 2003
Carl Timmermans Luz-Maria Rodriguez Harry J G M Crijns Antoon F M Moorman Hein J J Wellens

BACKGROUND Idiopathic left bundle-branch block (LBBB)-like ventricular tachycardia (VT) is considered to originate in the right ventricular outflow tract (RVOT) or from the aortic root. Both regions are derived from the embryonic outflow tract. We now report that also the pulmonary trunk can give rise to VT, suggesting a common etiology of these tachycardias. METHODS AND RESULTS We studied 6 ...

2011
Claire A. Martin Andrew A. Grace Christopher L.-H. Huang

Ventricular tachycardia (VT) in Brugada Syndrome patients often originates in the right ventricular outflow tract (RVOT). We explore the physiological basis for this observation using murine whole heart preparations. Ventricular bipolar electrograms and monophasic action potentials were recorded from seven epicardial positions in Langendorff-perfused wild-type and Scn5a+/- hearts. VT first appe...

2016
Jan Novak Alessandro Zorzi Silvia Castelletti Antonis Pantasis Ilaria Rigato Domenico Corrado William Mckenna Pier D. Lambiase

Aims The differentiation between idiopathic right ventricular outflow tract (RVOT) arrhythmias and early arrhythmogenic right ventricular cardiomyopathy (ARVC) can be challenging. We aimed to assess whether QRS morphological features and coupling interval of ventricular ectopic beats (VEBs) can improve differentiation between the two conditions. Methods and Results Twenty desmosomal-gene muta...

Journal: :Journal of the American College of Cardiology 1999
F Victor C Leclercq P Mabo D Pavin A Deviller C de Place P Pezard J Victor C Daubert

OBJECTIVES To evaluate the long-term functional and hemodynamic effects of right ventricular outflow tract (RVOT) pacing by comparison with right ventricular apical (RVA) pacing. BACKGROUND Acute studies have suggested that RVOT pacing could significantly improve cardiac performance in comparison with RVA pacing but no data are available in chronically implanted patients. METHODS Sixteen pa...

2017
Jørg Saberniak Ida S. Leren Trine F. Haland Jan Otto Beitnes Einar Hopp Rasmus Borgquist Thor Edvardsen Kristina H. Haugaa

AIMS Differentiation between early-phase arrhythmogenic right ventricular cardiomyopathy (ARVC) and right ventricular outflow tract (RVOT)-ventricular tachycardia (VT) can be challenging, and correct diagnosis is important. We compared electrocardiogram (ECG) parameters and morphological right ventricular (RV) abnormalities and investigated if ECG and cardiac imaging can help to discriminate ea...

Journal: :Heart Rhythm 2023

Ventricular arrhythmia (VA) has been successfully ablated from the supra-pulmonary sinus cusps (PSC). However, electrocardiography (ECG) characteristics for VA originating above PSCs and high right ventricular outflow tract (RVOT) are not well-elucidated. We aimed to investigate ECG of supra-PSC RVOT. Patients with RVOT-type VAs who also underwent RVOT angiography were included. Three-dimension...

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