Comparação das medidas da área valvar mitral obtidas por parâmetros hemodinâmicos invasivos e ecocardiografia tridimensional em tempo real pré e pós-valvoplastia mitral percutânea

ABSTRACT Comparison of Mitral Valve Area Measurements byInvasive Hemodynamic Parameters and Real-TimeThree-Dimensional Echocardiography Before andAfter Percutaneous Mitral Valvuloplasty Background: Real time three-dimensional (3D) echocar-diography (Echo) is an innovative technique to assessmitral valve area (MVA) that must be validated in comparisonwith established MVA calculation techniques. The calcu-lation of valve area by Gorlin’s method has been wellestablished and correlates adequately with the true MVA.This study was aimed at comparing MVA obtained byhemodynamic and echocardiographic methods, based oninvasive hemodynamic (Gorlin’s formula) and 3D Echoparameters after percutaneous balloon mitral valvuloplasty(PBMV). Method: Prospective study carried out from February2009 to February 2010, in 24 individuals (22 women, 39 +12 years) with symptomatic mitral stenosis undergoing PBMV.2D and 3D Echo were compared before and after thePBMV, with MVA (3D Echo/invasive measurement) andmitral gradient (max/mean) measurements.