Cardiology

Cardiac Catheterization and Interventional Cardiology

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

Abacı A. · Oguzhan A. · Ünal Ş. · Kıranatlı B. · Eryol N. · Basar E. · Ergin A. · Cetin S.

Author affiliations

Department of Cardiology, Erciyes University School of Medicine, Kayseri, Turkey

Keywords: EchocardiographyGorlin methodMitral valve areaStenosisVena contracta

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Cardiology 2002;98:50–59
https://doi.org/10.1159/000064675

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Article / Publication Details

First-Page Preview
Abstract of Cardiac Catheterization and Interventional Cardiology

Received: November 18, 2001
Accepted: April 07, 2002
Published online: September 26, 2002
Issue release date: September 2002

Number of Print Pages: 10
Number of Figures: 3
Number of Tables: 1

ISSN: 0008-6312 (Print)
eISSN: 1421-9751 (Online)

For additional information: https://www.karger.com/CRD

Abstract

Objectives: 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) determined by VCW with MVAs obtained by other more traditional echocardiographic methods. Methods: We studied 59 patients (43 females, 42 ± 14 years) with MS. VCW was measured in the apical four chamber view by Doppler color flow mapping. The largest diameter of the VCW during diastole was measured for at least three cardiac cycles and averaged. MVA was calculated from the following equation: πr2, where r = VCW/2. MVA was also determined by planimetry, the pressure half-time method, and by the Gorlin formula. Results: In this study, the width of the vena contracta ranged from 0.89 to 1.73 cm (mean 1.30 ± 0.21). MVA, calculated based on the VCW, ranged from 0.63 to 2.35 cm2 (mean 1.36 ± 0.41). MVA by VCW (1.36 ± 0.41 cm2) showed good correlations with three comparative techniques: (1) the cross-sectional area by planimetry (1.35 ± 0.36 cm2, mean difference = 0.21 ± 0.16 cm2, y = 0.91x + 0.14, r = 0.79, SEE = 0.26 cm2, p < 0.001); (2) the area derived from the Doppler pressure half-time (1.27 ± 0.32 cm2, mean difference = 0.22 ± 0.19 cm2, y = 0.97x + 0.13, r = 0.76, SEE = 0.27 cm2, p < 0.001), and (3) the area derived from the Gorlin equation in the 18 patients who underwent catheterization (1.27 ± 0.35 cm2, mean difference = 0.19 ± 0.16, y = 0.98x + 0.05, r = 0.81, SEE = 0.26 cm2, p < 0.001). Conclusions: These findings suggest that Doppler color flow imaging of the MS jet in the vena contracta can provide an accurate estimation of MVA and appears to be potentially applicable in the assessment of the severity of MS.

© 2002 S. Karger AG, Basel



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Article / Publication Details

First-Page Preview
Abstract of Cardiac Catheterization and Interventional Cardiology

Received: November 18, 2001
Accepted: April 07, 2002
Published online: September 26, 2002
Issue release date: September 2002

Number of Print Pages: 10
Number of Figures: 3
Number of Tables: 1

ISSN: 0008-6312 (Print)
eISSN: 1421-9751 (Online)

For additional information: https://www.karger.com/CRD

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2002, Vol.98, No. 1-2

September 2002

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