Figure 1. Floppy Mitral Valve. A 71-year-old man presented with acute pulmonary edema and cardiogenic shock nine years after his mitral and aortic valves had been replaced by Bjork-Shiley prostheses. Cinefluoroscopy showed that the minor strut of the mitral-valve prosthesis had broken off, and the disk was flopping wildly in the left ventricle. A frame from the cinefluoroscopy (Panel A) shows the severed minor strut (open arrow), the free-floating disk (arrowhead), the defective mitral-valve prosthesis (solid arrow), and the intact aortic-valve prosthesis (curved arrow). Echocardiography revealed wide-open mitral regurgitation. The disk was removed from the left ventricle, and the defective . . .