TY - JOUR
T1 - A Simplified, Practical Approach to Assessment of Severity of Mitral Régurgitation by Doppler Color Flow Imaging with Proximal Convergence
T2 - Validation with Concomitant Cardiac Catheterization
AU - Chaliki, Hari P.
AU - Nishimura, Rick A.
AU - Enriquez-Sarano, Maurice
AU - Reeder, Guy S.
PY - 1998
Y1 - 1998
N2 - • Objective: To compare the proximal convergence method for quantification of mitral régurgitation with findings on concomitant left ventriculography. • Material and Methods: In 41 patients (22 men and 19 women, 63 ±13 years of age), mitral régurgitation was evaluated concomitantly by Doppler color flow jet area, proximal convergence method, and left ventriculography. A simplified measurement of the proximal convergence, consisting of the aliasing radius and velocity of the proximal isosurface (r2 x V), was used. • Results: Angiographie grade correlated well with the proximal convergence method (r2 x V) but had poor correlation with the Doppler color flow jet area method. All patients with a proximal convergence flow rate of less than 10 cm3/s had grade 1 or 2 mitral régurgitation, whereas patients with a proximal convergence flow rate of more than 20 cm3/s had grade 3 or 4 mitral régurgitation. The severity of mitral régurgitation was indeterminate in patients with proximal convergence flow rates from 10 to 20 cm3/s. • Conclusion: Doppler color flow jet area correlates poorly with angiographie grade of mitral régurgitation. A simplified proximal convergence method is useful for separating grade 3 and 4 from grade 1 and 2 mitral régurgitation in most patients. A group of patients with indeterminate severity of mitral régurgitation remains, however, in whom further assessment is necessary.
AB - • Objective: To compare the proximal convergence method for quantification of mitral régurgitation with findings on concomitant left ventriculography. • Material and Methods: In 41 patients (22 men and 19 women, 63 ±13 years of age), mitral régurgitation was evaluated concomitantly by Doppler color flow jet area, proximal convergence method, and left ventriculography. A simplified measurement of the proximal convergence, consisting of the aliasing radius and velocity of the proximal isosurface (r2 x V), was used. • Results: Angiographie grade correlated well with the proximal convergence method (r2 x V) but had poor correlation with the Doppler color flow jet area method. All patients with a proximal convergence flow rate of less than 10 cm3/s had grade 1 or 2 mitral régurgitation, whereas patients with a proximal convergence flow rate of more than 20 cm3/s had grade 3 or 4 mitral régurgitation. The severity of mitral régurgitation was indeterminate in patients with proximal convergence flow rates from 10 to 20 cm3/s. • Conclusion: Doppler color flow jet area correlates poorly with angiographie grade of mitral régurgitation. A simplified proximal convergence method is useful for separating grade 3 and 4 from grade 1 and 2 mitral régurgitation in most patients. A group of patients with indeterminate severity of mitral régurgitation remains, however, in whom further assessment is necessary.
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U2 - 10.4065/73.10.929
DO - 10.4065/73.10.929
M3 - Article
C2 - 9787739
AN - SCOPUS:0031688613
SN - 0025-6196
VL - 73
SP - 929
EP - 935
JO - Mayo Clinic proceedings
JF - Mayo Clinic proceedings
IS - 10
ER -