Results 101 to 110 of about 3,854 (195)
Válvula aórtica cuadricúspide. Presentación de dos casos
Cirugía Cardiovascular, 2022 Resumen: La válvula aórtica cuadricúspide es una malformación congénita infrecuente. Aproximadamente la mitad de los casos publicados han sido intervenidos quirúrgicamente.
Víctor Novoa +5 more
doaj
Quadricuspid pulmonary valve complicated with aneurysm of pulmonary trunk diagnosed with ECG-gated computed tomography [PDF]
, 2009 Quadricuspid pulmonary valve (QPV) is an uncommon congenital defect reported in the general population with a frequency of up to 0.25%. The defect usually does not cause severe clinical complications and its presence frequently remains clinically silent.
Czekajska-Chehab, E. +4 more
core +1 more source
The Influence of the Aortic Root Geometry on Flow Characteristics of a Bileaflet Mechanical Heart Valve [PDF]
arXiv, 2018 Bileaflet mechanical heart valves have one of the most successful valve designs for more than 30 years. These valves are often used for aortic valve replacement, where the geometry of the aortic root sinuses may vary due to valvular disease and affect valve performance. Common geometrical sinus changes may be due to valve stenosis and insufficiency. In
arxiv
Aortic Stenosis: Evaluation with Multidetector CT Angiography and MR Imaging [PDF]
, 2008 Aortic valvular stenosis (AS) is the most common valve disease which results in the need for a valve replacement. Although a Doppler echocardiography is the current reference imaging method, the multidetector computerized tomograpghy (MDCT) and magnetic ...
Alkadhi +38 more
core +3 more sources
Image-based immersed boundary model of the aortic root [PDF]
arXiv, 2017 Each year, approximately 300,000 heart valve repair or replacement procedures are performed worldwide, including approximately 70,000 aortic valve replacement surgeries in the United States alone. This paper describes progress in constructing anatomically and physiologically realistic immersed boundary (IB) models of the dynamics of the aortic root and
arxiv
IHJ Cardiovascular Case Reports, 2018 Quadricuspid aortic valve is a rare entity. Left ventricular noncompaction is an uncommon cause of cardiomyopathy. Combination of these two conditions is very rare. We report a case of quadricuspid aortic valve and moderate aortic regurgitation with left
Arnab Ghosh Chaudhury +2 more
doaj
Fluid dynamics of aortic root dilation in Marfan syndrome [PDF]
Journal of Biomechanics, 47, (2014) 3120-3128, 2014 Aortic root dilation and propensity to dissection are typical manifestations of the Marfan Syndrome (MS), a genetic defect leading to the degeneration of the elastic fibres. Dilation affects the structure of the flow and, in turn, altered flow may play a role in vessel dilation, generation of aneurysms, and dissection.
arxiv
3D Printing-Assisted Energy Loss Testing of Artificial Aortic Heart Valves [PDF]
arXiv, 2019 With the development of additive manufacturing, 3D printing technology has become more common nowadays. We designed and 3D printed a cost-effective liquid fluid pressure measurement device that can convert liquid pressure to air pressure. Air pressure was measured by a low-cost manometer in this study.
arxiv
Quadricuspid aortic valve: A rare intraoperative diagnosis by transesophageal echocardiography
Annals of Cardiac Anaesthesia, 2018 Quadricuspid aortic valve (QAV) is a rare congenital anomaly frequently associated with other anomalies particularly coronary anomalies. It may be detected on transthoracic or transesophageal echocardiography.
Anupam Das +2 more
doaj +1 more source
Surgical repair of truncal valve regurgitation† [PDF]
, 2017 OBJECTIVES Truncal valve regurgitation remains a short- and long-term risk factor for patients with truncus arteriosus. There are limited data available on techniques and outcomes of truncal valve repair (TVR).
Baird, Christopher W. +6 more
core