Prolapse of the mitral valve is described in two patients with the Ebstein's anomaly of the tricuspid.

Prolapse of the mitral valve is described in two patients with the Ebstein's anomaly of the tricuspid valve. This association has not been described previously. It is probable, however, that this association is not a rare one, but that clinical features of the prolapsing mitral valve are obscured by those resulting from the malformed tricuspid valve. Opportunity also was provided to study anatomically the mitral valve of a patient known to have a systolic click and a late systolic murmur (the Barlow syndrome). Although there have been several anatomic descriptions of floppy mitral valve at necropsy, they have been extremely rare in patients known to have the classic auscultatory features of the Barlow syndrome.