نتایج جستجو برای: rvot

تعداد نتایج: 491  

Journal: :Biomaterials 2010
David Kalfa Alain Bel Annabel Chen-Tournoux Alberto Della Martina Philippe Rochereau Cyrielle Coz Valérie Bellamy Mourad Bensalah Valérie Vanneaux Séverine Lecourt Elie Mousseaux Patrick Bruneval Jérôme Larghero Philippe Menasché

A major issue in congenital heart surgery is the lack of viable right ventricular outflow tract (RVOT) replacement materials. Several biomaterials have been used, with different scaffolds and cells, but they have failed to restore a tri-layered RVOT, and reoperations are often required. We investigated the function, histological changes and potential of growth and tissue regeneration of polydio...

Journal: :European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 2012
Tatsuya Oda Takaya Hoashi Koji Kagisaki Isao Shiraishi Toshikatsu Yagihara Hajime Ichikawa

OBJECTIVES Small pulmonary allografts are difficult to obtain, thus we now use a tailor-made right ventricle to pulmonary artery (RV-PA) conduit for the Ross procedure, consisting of a fresh non-treated autologous pericardial (AP) patch for the posterior wall and expanded polytetrafluoroethylene (ePTFE) monocusp patch for the anterior wall. Long-term durability and RV function were assessed. ...

2013
Dong-Hwi Kim Jeong-Eun Yi Hyun Ji In Minyeong Jeong Moon Sung Kim Joune Seup Lee Jong Hoon Lee Borami Kang Hae-Ok Jung Ho-Joong Youn

Asymptomatic right ventricular outflow tract (RVOT) myxoma is quite rare. We report an unusual case of asymptomatic myxoma arising from the RVOT which was successfully surgically removed.

2015
Jae-Jin Kwak

Premature ventricular contractions (PVCs) or ventricular tachycardia (VT), with QRS morphologies of left bundle branch block (LBBB) and inferior axis can be ablated successfully from the right ventricular outflow tract (RVOT). However, it is not uncommon that PVCs or VT assumed to originate from the RVOT actually arise from the aortic root because of the proximity of the RVOT to the aortic root...

Journal: :Interactive cardiovascular and thoracic surgery 2015
Denis Berdajs Selim Mosbahi Jan Vos Dominique Charbonnier Roger Hullin Ludwig K von Segesser

OBJECTIVES Repair of the right ventricular outflow tract (RVOT) in paediatric cardiac surgery remains challenging due to the high reoperation rate. Intimal hyperplasia and consequent arteriosclerosis is one of the most important limitation factors for graft durability. Since local shear stress and pressure are predictive elements for intimal hyperplasia and wall degeneration, we sought to deter...

2008
Young Soo Lee Seong Wook Han Yoon Nyun Kim Chang Wook Nam Hyung Sub Kim Kee Sik Kim

Background and Objectives: Long-term right ventricular (RV) apex pacing has been associated with left ventricular (LV) systolic dysfunction. However, pacing in the RV outflow tract (RVOT) is associated with a narrower QRS duration and may have a more normal LV activation in comparison to RV apical (RVA) pacing. We hypothesized that RVOT pacing is associated with less mechanical dyssynchrony com...

Journal: :Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology 2010
Jippe C Balt Norbert M van Hemel Hein J J Wellens Willem G de Voogt

AIMS The right ventricular outflow tract (RVOT) is used as an alternative pacing site, but its superiority to the RV apex remains to be established. This lack of proof may in part be explained by heterogeneity within the RVOT-paced group, due to poor definitions of the RVOT. The aim of the present study is to characterize the RVOT in terms of fluoroscopic and electrocardiographic parameters. ...

2010
Vincent Roule Fabien Labombarda Arnaud Pellissier Rémi Sabatier Thérèse Lognoné Sophie Gomes Emmanuel Bergot Paul Milliez Gilles Grollier Eric Saloux

BACKGROUND Echocardiographic ratio of peak tricuspid regurgitant velocity to the right ventricular outflow tract time-velocity integral (TRV/TVI rvot) was presented as a reliable non-invasive method of estimating pulmonary vascular resistance (PVR). Studies using this technique in patients with moderate to high PVR are scarce. Left ventricular outflow tract time-velocity integral (TVI lvot) can...

Journal: :Anesthesia and analgesia 2007
Viji Kurup Albert Perrino Paul Barash Sabet W Hashim

A 63-yr-old patient presented with a preoperative diagnosis of aortic stenosis and pulmonary stenosis for aortic valve (AV) replacement and possible pulmonary valve (PV) repair. His symptoms included chest heaviness and shortness of breath. A preoperative transthoracic echocardiogram demonstrated calcified tri-leaflet AV with severe stenosis and a peak pulmonic flow velocity of 3.7 m/s. Cardiac...

2016
Ewelina Kwaśniak Ireneusz Haponiuk Maciej Chojnicki Radosław Jaworski Aneta Szofer-Sendrowska Mariusz Steffens

Double outlet right ventricle (DORV) is a congenital heart disease in which the great arteries (aorta and main pulmonary artery) arise from the right ventricle (RV), with concomitant ventricular septal defect (VSD), usually non-restrictive. Double outlet right ventricle can be accompanied by other cardiovascular anomalies, such as ventricular hypoplasia, restrictive septal defects and various p...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید