Smeloff-Cutter Mechanical Prosthesis in the Aortic Position for 49 Years

      We describe a 76-year-old male physician who at age 27 underwent replacement of his stenotic aortic valve with a Smeloff-Cutter mechanical prosthesis which functioned normally for 49 years. He died of a noncardiac condition. A normally functioning substitute cardiac valve for this length of time has not been previously reported (1).
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