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Ann Thorac Surg 2001;71:1670-1672
© 2001 The Society of Thoracic Surgeons

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Case report

Dissection of atrial septum after mitral valve replacement

^a Division of Cardiac Surgery, Cardiac and Thoracic Department, University of Pisa Medical School, Pisa, Italy
^b Division of Cardiology, Cardiac and Thoracic Department, University of Pisa Medical School, Pisa, Italy
^c Division of Anesthesiology, Cardiac and Thoracic Department, University of Pisa Medical School, Pisa, Italy

Accepted for publication June 2, 2000.

^* Address reprint requests to Dr Bortolotti, U. O. Cardiochirurgia, Ospedale Cisanello, Via Paradisa 2, 56124 Pisa, Italy (Email: u.bortolotti{at}cardchir.med.unipi.it).

We report a patient who presented with paraprosthetic leak complicated by dissection of the interatrial septum after mitral valve replacement. A review of the literature provides confirmation that only 3 cases have been previously reported of this potential, albeit extremely rare, complication of prosthetic mitral valve replacement. Prosthesis oversizing and improper mitral annular handling appeared to be the predisposing factors of this complication.