Many dangers attend mitral valve replacement in the presence of dense posterior annular calcification. The procedure described has been successful in 4 patients. The major elements of this procedure include complete ultrasonic debridement of the calcification, reconstitution of the disassembled atrioventricular groove, and retention of the mitral valve leaflets. © 1989, The Society of Thoracic Surgeons. All rights reserved.
Salm, T. J. V. (1989). Mitral Annular Calcification: A New Technique for Valve Replacement. Annals of Thoracic Surgery, 48(3), 437–439. https://doi.org/10.1016/S0003-4975(10)62878-0