Patients elected to undergo mitral valve surgery (either repair or replacement) with less equal than moderate (≤+2) tricuspid regurgitation and dilated tricuspid annulus (\>21mm/m2) at preoperative echocardiography will be screened. Consenting patients fulfilling all inclusion and exclusion criteria will be included in the study and assigned to elective mitral valve replacement or repair with or without concomitant tricuspid annuloplasty in a 1:1 fashion, using a blocked randomization scheme balanced within center.
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Progression of TR
Timeframe: 1 year