CONCLUSIONS Following MV repair with a semi-rigid annuloplasty ring, increased resting MV gradients are not uncommon. This is, among others, related to the implanted ring size and patient body surface area. Elevated postrepair MV gradients might result in poorer freedom from reintervention due to the added risk of reintervention for MV stenosis while survival and incidence of late atrial fibrillation development do not seem to be affected. Conflict of interest: none declared.