Peak hight velocity

INTRODUCTION: In grading mitral regurgitation (MR) magnetic resonance imaging is the gold standard but 2D echo is mostly used in clinical practice. However, each single echo parameter is prone to confounding influences. With regard to chronic primary and secondary MR the purpose of this study was to compare a new multi-dimensional echo-based grading system with an independent pre-operatively used invasive standard. METHODS: In a retrospective study we analyzed 177 patients with different degrees of MR severity, who were examined both by echocardiography and by cardiac catheterization...