[Relationship between mitral valve echo score and hemodynamic variables in patients with mitral stenosis]

Mitral valve echo score has been proposed as a predictor or of the outcome of balloon mitral valvotomy in patients with mitral stenosis. The relationship between mitral echo score and the hemodynamic variables was evaluated. In 41 patients with pure mitral stenosis (nine men and 32 women, aged 57.9 +/- 9.4 years), mitral echo score was estimated from two-dimensional echocardiographic findings, and mitral valve area was measured by planimetry on the two-dimensional short-axis view. Apex phonocardiography and continuous-wave Doppler echocardiographic recording of transmittral flow were simultaneously performed to measure left atrial/left ventricular mean transmittral pressure gradient, pressure half-time and (Q-1)-(2-OS) interval. Linear regression analysis revealed that both mitral echo score and mitral valve area were significantly correlated with mean transmittral gradient (r = 0.522, p = 0.0005 and r = -0.651, p < 0.0001, respectively), pressure half-time (r = 0.491, p < 0.005 and r = -0.757, p < 0.0001) and (Q-1)-(2-OS) interval (r = 0.551, p < 0.0005 and r = -0.487, p < 0.005, respectively). Mitral echo score has a significant correlation with hemodynamic variables, which were comparable to but slightly different from mitral valve area, in patients with mitral stenosis.