[Mitral valve insufficiency; undertreated or not?].

Dziadzko et al. describe the poor prognosis and low performance of surgery (15%) in a large cohort of patients with isolated moderate to severe mitral regurgitation (MR). They report a prevalence of moderate-severe MR 'in the community'. This is misleading as these patients were referred for echocardiography. Second, the authors stated there was 'important undertreatment' of MR as only 15% underwent surgery. Moderate MR was present in 70% and according to the 2006 guidelines, surgery for moderate MR is a class III recommendation. Finally, the authors report that few patients received 'the only treatment available (surgery)' and call for action. However, from the beginning of this century, treatment options have been extended by means of cardiac resynchronization therapy and the Mitraclip procedure. As nowadays these options account for up to 10% of non-pharmacological interventions of the mitral valve, not considering these modalities in the paper limits its value.