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Vena Contracta Width as a Predictor of Adverse Outcomes in Patients With Severe Isolated Tricuspid Regurgitation

Journal of the American Society of Echocardiography, 2011
The clinical outcomes and predictors of outcomes in isolated tricuspid regurgitation (TR) are poorly defined. The aim of this study was to investigate the determinants of outcomes in severe isolated TR.Seventy-four patients (mean age, 63 ± 12 years; 34 men) with severe isolated TR who satisfied the criteria of (1) TR jet area > 30% of right atrial area
Chi Young Shim, Hyuk-Jae Chang, Jong-Won Ha   +2 more
exaly   +4 more sources

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Application of the Vena Contracta Method for the Calculation of the Mitral Valve Area in Mitral Stenosis

Cardiology, 2002
<i>Objectives:</i> The vena contracta is the narrowest region of the regurgitant or stenotic jet just downstream the orifice and reflects the size of that orifice. This study was performed to assess the accuracy of the vena contracta width (VCW) in evaluating the severity of mitral stenosis (MS) and to compare the mitral valve area (MVA ...
Abdurrahman Oğuzhan, Emrullah Başar, Ali Ergin   +2 more
exaly   +3 more sources

Measurement of vena contracta width for the assessment of severity of mitral stenosis

Heart and Vessels, 2006
This study was designed to test whether vena contracta width (VCW) measured by color Doppler flow could be used to assess the severity of mitral stenosis (MS). A secondary objective was to determine the cut-off value of VCW for the prediction of severe MS. We studied 47 consecutive patients with MS (mean age, 50+/-11 years; 34 females) who did not have
Tae-Ho, Park, Min-Ah, Park, Su-Hun, Lee, Kwang-Soo, Cha, Moo-Hyun, Kim, Young-Dae, Kim, Young-Seoub, Hong   +6 more
openaire   +2 more sources

Adaptive Color Gain for Vena Contracta Quantification in Valvular Regurgitation

Ultrasound in Medicine & Biology, 2018
Severe valvular regurgitation can lead to pulmonary hypertension, atrial fibrillation and heart failure. Vena contracta width is used to estimate the severity of the regurgitation. Parameters affecting visualization of color Doppler have a significant impact on the measurement.
Pawel Kozlowski, Alfonso Rodriguez-Molares, Thor Andreas Tangen, Kjell Kristoffersen, Hans Torp, Olivier Gerard, Eigil Samset   +6 more
openaire   +2 more sources

Color flow imaging of the vena contracta in mitral regurgitation: technical considerations

Journal of the American Society of Echocardiography, 2003
Qualitative grading of mitral regurgitation severity has significant pitfalls secondary to hemodynamic variables, sonographic technique, blood pool entrainment, and the Coanda effect. Volumetric and proximal isovelocity surface area methods can be used to quantitate regurgitant orifice area, regurgitant volume, and regurgitant fraction, but have ...
Brad J, Roberts, Paul A, Grayburn
openaire   +2 more sources

Assessment of Mitral Regurgitation Severity by Doppler Color Flow Mapping of the Vena Contracta

Circulation, 1997
Background Although Doppler color flow mapping is widely used to assess the severity of mitral regurgitation (MR), a simple, accurate, and quantitative marker of MR by color flow mapping remains elusive. We hypothesized that vena contracta width by color flow mapping would accurately predict the severity of MR.
S A, Hall, M E, Brickner, D L, Willett, W N, Irani, I, Afridi, P A, Grayburn   +5 more
openaire   +2 more sources

Vena contracta gauge

Journal of Scientific Instruments, 1941
The construction of a vena contracta gauge is described in which the moving members are three racks on the inner edge of which are fixed pieces of stainless steel. These pieces have pointed projections, radial to the ring on which the racks are mounted at 120° intervals.
openaire   +1 more source

Color-coded Doppler imaging of the vena contracta as a basis for quantification of pure mitral regurgitation

The American Journal of Cardiology, 1994
The narrowest central flow region of a jet is defined as the vena contracta. This term is applied also to the contracted zone of the Doppler color flow image of a jet at its passage through an incompetent mitral valve. The clinical applicability of measuring the size of the vena contracta by transthoracic color-coded Doppler echocardiography for ...
W, Fehske, H, Omran, M, Manz, J, Köhler, A, Hagendorff, B, Lüderitz   +5 more
openaire   +2 more sources

Vena contracta width measurement: Theoretic basis and usefulness in the assessment of valvular regurgitation severity

Current Cardiology Reports, 2003
In patients with valvular regurgitation, the regurgitation jet can be observed by Doppler color flow imaging. Vena contracta is defined as the narrowest part of the jet, just distal to the regurgitant orifice. Vena contracta dimensions reflect the severity of regurgitation.
Jean Paul, Quéré, Christophe, Tribouilloy, Maurice, Enriquez-Sarano   +2 more
openaire   +2 more sources

Quantifying Aortic Regurgitation by Using the Color Doppler–Imaged Vena Contracta

Circulation, 1997
Background The aim of the present study was to evaluate the accuracy of determining aortic effective regurgitant orifice area (EROA) and aortic regurgitant volume by using the color Doppler–imaged vena contracta (CDVC). Methods and Results Twenty-nine hemodynamically different ...
M, Ishii, M, Jones, T, Shiota, I, Yamada, R S, Heinrich, S R, Holcomb, A P, Yoganathan, D J, Sahn   +7 more
openaire   +2 more sources