The Journal of Thoracic and Cardiovascular Surgery, Vol 77, 832-842, Copyright © 1979 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association
Taussig-Bing anomaly with straddling mitral valve
AJ Muster, S Bharati, KU Aziz, FS Idriss, MH Paul, M Lev, I Carr, A DeBoer and C Anagnostopoulos
Five patients with the left-sided or intermediate type (Lev) of the
Taussig-Bing anomaly were found to have an associated straddling of the
mitral valve. In four patients the anomaly of the mitral valve was not
recognized preoperatively, and all four died postoperatively. The
persistent subpulmonic obstruction caused by the abnormal attachment of the
anterior mitral leaflet is considered a significant factor in the poor
operative outcome. Retrospective study of angiograms in these four patients
revealed diagnostic clues of straddling mitral valve which enabled us to
diagnose a fifth patient angiographically and confirm the diagnosis by
cross-sectional echocardiography. A surgical approach to correct this
association of abnormalities is proposed which avoids operating upon the
mitral valve. Its function is thereby preserved, yet the hemodynamic
problem caused by the straddling is bypassed. The fifth patient in this
series was successfully treated by the proposed operative method.