Relation between reduction in ischaemic mitral regurgitation and improvement in regional left ventricular contractility during low dose dobutamine stress echocardiography

摘要

The indication of adjunctive mitral valve surgery in patients with ischaemic mitral regurgitation (MR) undergoing coronary artery bypass grafting remains controversial. Furthermore, no approach currently predicts in which patients ischaemic MR will resolve with revascular-isation alone. It has been recently suggested that a reduction in ischaemic MR caused by an improvement in regional left ventricular (LV) contractility during low dose dobutamine stress echocardiography (LDSE) might predict a beneficial effect of revascularisation on ischaemic MR. This study tested the hypothesis that LDSE induced changes in ischaemic MR are associated with changes in regional LV contractility.