Results 121 to 130 of about 5,766,879 (155)

Mitral valve navigator. A new diagnostic tool for effective regurgitant orifice quantification in mitral regurgitation

Echocardiography, 2018
IntroductionMitral regurgitation severity assessment is usually carried out using qualitative, semiquantitative, and quantitative parameters. The mitral valve navigation (MVN) tool allows to measure the mitral effective regurgitant orifice (MERO) from 3D echo datasets. Our aim was to validate the MVN as a new tool to quantify MERO.
Sandra L. Gonzalez Navarrete, José Alberto de Agustín Loeches, Eduardo Pozo Osinalde, Keyla de Jesús, Adahir Madrigal, Silvana L. López, Eduardo Ortiz, Adriana Saltijeral, Eduardo Enriquez‐Rodriguez, José J. Gómez de Diego, Patricia Mahía, Pedro Marcos Alberca, Miguel A. García Fernández, Carlos Macaya, Leopoldo Pérez de Isla   +14 more
openaire   +3 more sources

Right Ventricular Function and Outcomes Stratified by the Effective Regurgitant Orifice Area in Secondary Tricuspid Regurgitation

Canadian Journal of Cardiology
In patients with moderate and severe secondary tricuspid regurgitation (STR), the effective regurgitant orifice area (EROA), corrected using the proximal isovelocity surface area (PISA) method for tricuspid valve leaflet tethering and low TR jet velocities, has an unclear threshold for identifying high-risk patients. In this study we aimed to establish
Tomaselli M., Penso M., Badano L. P., Clement A., Radu N., Heilbron F., Benzoni G., Hadareanu D. R., Springhetti P., Giorgio O., Caravita S., Baratto C., Sorropago A., Fisicaro S., Parati G., Muraru D.   +15 more
openaire   +4 more sources

Anatomical Regurgitant Orifice Detection and Quantification from 3-D Echocardiographic Images [PDF]

Ultrasound in Medicine and Biology, 2017
The vena contracta and effective regurgitant orifice area (EROA) are currently used for the clinical assessment of mitral regurgitation (MR) from 2-D color Doppler imaging.
Enrico G. Caiani, Gloria Tamborini, Miguel Sotaquira   +2 more
exaly   +2 more sources

Mitral Effective Regurgitant Orifice Area Predicts Pulmonary Artery Pressure Level in Patients with Aortic Valve Stenosis

Journal of the American Society of Echocardiography, 2018
Background: Mitral regurgitation (MR) and elevated pulmonary artery pressure are common findings in patients with aortic valve stenosis (AS). The pathophysiologic role of quantitatively defined MR as a determinant of pulmonary hypertension (PH) is ...
Andrea Rossi, Giovanni Benfari
exaly   +2 more sources

Effective mitral regurgitant orifice area: Clinical use and pitfalls of the proximal isovelocity surface area method

Journal of the American College of Cardiology, 1995
Objectives.We attempted to determine the accuracy and pitfalls of calculating the mitral regurgitant orifice area with the proximal isovelocity surface area method in a clinical series that included patients with valvular prolapse and eccentric jets ...
Maurice Enriquez-Sarano, Sharonne N. Hayes   +1 more
exaly   +2 more sources

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Clinical impact of mitral regurgitation in aortic valve stenosis: Insight from effective regurgitant orifice area

Echocardiography, 2021
AbstractPurposeMechanisms leading to heart failure (HF) symptoms in aortic valve stenosis (AS) are contentious. We examined the impact of secondary mitral regurgitation (MR) on the symptomatic status in patients with AS.MethodsOutpatients performing echocardiography with any degree of AS, without organic mitral valve disease, mitral valve intervention,
Caterina Maffeis, Giovanni Benfari, Stefano Nistri, Flavio L. Ribichini, Andrea Rossi   +4 more
openaire   +3 more sources

Direct visualization of regurgitant orifice by CMR reveals differential asymmetry according to etiology of mitral regurgitation.

JACC: Cardiovascular Imaging, 2011
ObjectivesThis study sought to characterize the shape of regurgitant orifice area (ROA) and mitral apparatus in various forms of mitral regurgitation (MR) by cardiac magnetic resonance (CMR).BackgroundROA is an accepted parameter of MR severity. However,
Kurt Debl, Claudia Fellner, Andreas Luchner   +2 more
exaly   +2 more sources

Fluid mechanics of regurgitant jets and calculation of the effective regurgitant orifice in free or complex configurations

Journal of Biomechanics, 2000
The velocity fields of turbulent jets can be described using a single formula which includes two empirical constants: k(core) determining the length of the central core and k(turb) the jet widening. Flow models simulating jet adhesion, confinement and noncircular orifices were studied using laser Doppler anemometer and the modifications of the ...
B, Diebold, A, Delouche, A, Decesare, P, Delouche, J P, Guglielmi, A, Herment   +5 more
openaire   +2 more sources

Evaluation of Effective Aortic Regurgitant Orifice Area and Its Effect on Aortic Regurgitant Volume with Doppler Echocardiography

Angiology, 2000
The authors measured the aortic regurgitant orifice area (ROA) using Doppler echocar diography and attempted to clarify how important the ROA is in determining the regur gitant volume (RV) in 22 patients with chronic aortic regurgitation (AR).
K, Mizushige, S, Nozaki, K, Ohmori, H, Matsuo   +3 more
openaire   +2 more sources

Contrasting effect of similar effective regurgitant orifice area in mitral and tricuspid regurgitation: A quantitative Doppler echocardiographic study

Journal of the American Society of Echocardiography, 2002
We compared the effect of similar effective regurgitant orifice (ERO) areas in tricuspid regurgitation (TR) and mitral regurgitation (MR) on hemodynamics and volume overload, and examined the impact on grading of TR and MR severity. In a prospective study, 95 patients with TR in sinus rhythm were compared with 95 patients with MR in sinus rhythm ...
Christophe M, Tribouilloy, Maurice, Enriquez-Sarano, Mary Ann, Capps, Kent R, Bailey, A Jamil, Tajik   +4 more
openaire   +2 more sources