Comparison of quantitative and semiquantitative methods for assessing mitral regurgitation by transesophageal echocardiography

Semiquantitative grading of mitral regurgitation (MR) by transesophageal echocardiography (TEE) is widely used for clinical decision making. However, the relation between semiquantitative grading by biplane or multiplane TEE and quantitative measures remains undetermined. Biplane or multiplane TEE w...

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Bibliographic Details
Published in:The American journal of cardiology 2001, Vol.87 (1), p.66-70
Main Authors: Pu, Min, Thomas, James D, Vandervoort, Pieter M, Stewart, William J, Cosgrove, Delos M, Griffin, Brian P
Format: Article
Language:English
Subjects:
Biological and medical sciences
Cardiology. Vascular system
Cardiovascular disease
Comparative studies
Echocardiography, Transesophageal - methods
Endocardial and cardiac valvular diseases
Female
Heart
Hemodynamics - physiology
Humans
Male
Medical sciences
Middle Aged
Mitral Valve Insufficiency - diagnostic imaging
Mitral Valve Insufficiency - physiopathology
Space life sciences
Stroke Volume - physiology
Tests
Thermodilution
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Summary:Semiquantitative grading of mitral regurgitation (MR) by transesophageal echocardiography (TEE) is widely used for clinical decision making. However, the relation between semiquantitative grading by biplane or multiplane TEE and quantitative measures remains undetermined. Biplane or multiplane TEE was performed in 113 patients in the operating room. MR severity was graded from 1 to 4+ by Doppler color flow mapping. MR was quantified using the thermodilution-Doppler method as mitral regurgitant stroke volume (RSV) derived from the difference between total mitral inflow measured by pulsed Doppler and forward flow measured by thermodilution. Mitral regurgitant orifice area (ROA) was calculated by RSV divided by mitral regurgitant velocity. RSV and ROA were also calculated using the proximal isovelocity surface area method. RSV and ROA significantly correlated with the semiquantitative grading either by TEE or angiogram in a nonlinear fashion, with the best fit being given by an exponential model with correlation coefficients from 0.73 to 0.87 (p
ISSN:0002-9149
1879-1913
DOI:10.1016/S0002-9149(00)01274-1