[Transrectal recatheterization under echocardiography control]

We present the case of a 36 years-old woman, in whom antegrade mitral intraluminal valvulotomy was performed under transesophageal echocardiography control. Inadvertently, we retired the Inoue's catheter to the right atrium from the left atrium, before the dilation of the mitral valve was accomplished. Under echocardiographic control we reintroduced the transseptal catheter across the former septal orifice, avoiding a new septal puncture, and its possible complications. Now a days, the antegrade intraluminal mitral valvulotomy is easy performed, because the transesophageal echocardiography monitoring. The transesophageal echocardiography has modified the transseptal catheterization contraindications.