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

Introduction Mitral 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 M...

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Published in:Echocardiography (Mount Kisco, N.Y.) N.Y.), 2018-11, Vol.35 (11), p.1812-1817
Main Authors: Gonzalez Navarrete, Sandra L., Agustín Loeches, José Alberto, Pozo Osinalde, Eduardo, Jesús, Keyla, Madrigal, Adahir, López, Silvana L., Ortiz, Eduardo, Saltijeral, Adriana, Enriquez‐Rodriguez, Eduardo, Gómez de Diego, José J., Mahía, Patricia, Marcos Alberca, Pedro, García Fernández, Miguel A., Macaya, Carlos, Pérez de Isla, Leopoldo
Format: Article
Language:English
Subjects:
3D echocardiography
automatic quantification
Cohort Studies
Echocardiography, Three-Dimensional - instrumentation
Echocardiography, Three-Dimensional - methods
Echocardiography, Transesophageal - instrumentation
Echocardiography, Transesophageal - methods
Female
Humans
Male
Middle Aged
mitral regurgitation
Mitral Valve - diagnostic imaging
Mitral Valve - physiopathology
Mitral Valve Insufficiency - diagnostic imaging
Mitral Valve Insufficiency - physiopathology
Observer Variation
Reproducibility of Results
Retrospective Studies
Sensitivity and Specificity
Severity of Illness Index
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Summary:Introduction Mitral 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. A secondary aim was to assess the intra‐ and interobserver variability. Methods This is a retrospective study in which consecutive subjects undergoing a transoesophageal echocardiogram for more than mild mitral regurgitation evaluation were included. MERO measurement obtained by means of 3D color Doppler was used as the gold standard method for comparison. In every patient, MERO was also obtained using the MVN tool. Results Fifty‐nine consecutive patients were analyzed (47.5% female; mean age 50.8 years). Mitral regurgitation was moderate in 23 (39%) and severe in 36 (61%) patients. Forty patients (67.8%) had a primary and 19 (32.2%) a secondary mitral regurgitation. The intraclass correlation coefficient (ICC) between 3D color Doppler and MVN was excellent (ICC: 0.95; 95% CI: 0.82 to 0.98; P 
ISSN:0742-2822
1540-8175
DOI:10.1111/echo.14114