A 53-year-old woman with rheumatic heart disease (having had a Bjork-Shiley 29 mitral prosthesis and a Braille 31 tricuspid bioprosthesis implanted in 1980 and 1995, respectively), in permanent atrial fibrillation, was electively admitted to our department for redo cardiac surgery. Ten weeks previously she was diagnosed with severe tricuspid stenosis (bioprosthesis degeneration), in New York Heart Association functional class …