Results 81 to 90 of about 6,306,409 (152)

An Echocardiographic Model Predicting Severity of Aortic Regurgitation in Congenital Heart Disease

, 2010
Background— Multiple echocardiographic parameters have been identified to predict the severity of aortic regurgitation (AR) with variable reliability.
Rebecca S. Beroukhim, Dionne A. Graham, Renee Margossian, Tal Geva, Steven D. Colan, David W. Brown   +5 more
core   +1 more source

Model tests of K-Downcomer orifice plates for General Electric Company

, 1961
This report provides information on the use of the model test data to predict prototype performance and to compare prototype and model results and, an orifice design having specified minimum pressures at the vena contracta for a range of flow ...
Lomax, C. C.
core   +1 more source

Longitudinal Intracardiac Right Ventricular Flow Analysis in Infants With Hypoplastic Left Heart Syndrome in Interstage I Using Novel Doppler Velocity Reconstruction

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Background Echocardiography provides noninvasive frontline assessment of right ventricular (RV) function in hypoplastic left heart syndrome (HLHS). However, conventional metrics do not quantify RV intracardiac hemodynamics.
Maren Brinken, Brett A. Meyers, R. Mark Payne, Roland Axt‐Fliedner, Can Yerebakan, Pavlos Vlachos, Yue‐Hin Loke   +6 more
doaj   +1 more source

Assessment of aortic regurgitation by transesophageal color Doppler imaging of the vena contracta: validation against an intraoperative aortic flow probe

, 2001
OBJECTIVESThis study was performed to validate the accuracy of color flow vena contracta (VC) measurements of aortic regurgitation (AR) severity by comparing them to simultaneous intraoperative flow probe measurements of regurgitant fraction (RgF) and ...
DuWayne L Willett, Shelley A Hall, Michael A Wait, Paul A Grayburn, Michael E Jessen   +4 more
core   +1 more source

Distribution map of Ptilagrostis contracta.

, 2017
Distribution map of Ptilagrostis contracta.
Wen-Li Chen (492532), Zhong-Shuai Zhang (3624179), Ling-Lu Li (3624182)   +2 more
core   +1 more source

Evaluation of Right Heart Structure and Function in Pacemaker-dependent Patients by Two-Dimensional Speckle Tracking Echocardiography: A 1-Year Prospective Cohort Study

Reviews in Cardiovascular Medicine
Background: Left bundle branch area pacing (LBBAP) has evolved into a practical and secure pacing procedure. However, previous studies of LBBAP focused on left heart function and synchronization and lacked assessment of right heart ...
Yingchen Mei, Rui Han, Liting Cheng, Haiwei Li, Yihua He, Wei Liu, Yongquan Wu   +6 more
doaj   +1 more source

Feasibility and Clinical Value of Vena Contracta Area in the Quantification of Functional Mitral Regurgitation During Bicycle Exercise: A Color Doppler 3D Echocardiography Study

, 2020
The utility of three-dimensional (3D) colour Doppler echocardiography for the evaluation of dynamic changes of secondary mitral regurgitation during dynamic stress echocardiography Previous studies proved, that severe functional mitral regurgitation (FMR)
Večeřa, Jan
core  

Evaluating AI-Generated Podcasts Versus Traditional Reading for Learning From Medical Articles: Protocol for a Mixed-Design Study Among Resident Physicians

JMIR Research Protocols
BackgroundPodcasts have emerged as a popular medium in medical education over the past decade. Audio learning allows flexibility and may help residents engage with content in new ways. Reading scientific literature is a core skill
Matthias Stadler, Constanze Richters, Martin R Fischer, Fabian Hutmacher   +3 more
doaj   +1 more source

Indirect mitral annuloplasty in patients with reduced or preserved ejection fraction: A real‐world, single‐centre experience

ESC Heart Failure
Aims We aim to evaluate the real‐world effectiveness and safety of the Carillon Mitral Contour System (CMCS) for indirect annuloplasty in patients with heart failure (HF) and secondary mitral regurgitation (SMR).
Holger Priebe‐Brämer, Firas Jaly, Nithusa Rahunathan, Mark Luedde, Alexander Albert, Klaus K. Witte, Hans‐Joerg Hippe   +6 more
doaj   +1 more source

Estudo experimental do desempenho de um novo filtro de veia cava inferior [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2012Filtros de veia cava (FVC) são dispositivos médicos implantáveis utilizados na prevenção do ...
Corbellini, Marcelo Peixer
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