Introduction
The relationship between right ventricular (RV) function and prognosis
has been reported in various cardiac diseases, including mitral
regurgitation (MR).(1-6) After transcatheter mitral valve repair (TMVr),
patients with RV dysfunction had an increased risk of all-cause
mortality.(7) TMVr has the potential to restore RV function, which was
shown in early experiences with the MitraClip (Abbott, Abbott Park,
IL).(8) To date, only a few reports have provided data regarding RV
function during follow-up.(8-10) Further, little is known regarding the
impact of RV function and its cut-off value for predicting adverse
outcomes following MitraClip therapy. The aim of this study was to
investigate the prognostic impact of RV function following TMVr using
MitraClip.