Abstract
A 53-year-old man who had undergone aortic valve replacement with a Starr-Edwards ball valve prosthesis 39 years previously was admitted to our hospital under the diagnosis of ascending aortic aneurysm. Operative findings revealed that the ball valve was functioning normally. The markedly dilated ascending aorta was replaced with a 30-mm prosthetic vascular graft, and the ball valve was replaced with a19-mm bileaflet valve prosthesis. The patient's postoperative course was uneventful, and he was discharged from our hospital 19 days after surgery. Dilatation of the ascending aorta in this case might have been caused by the poststenotic dilatation mechanism, which seems to be one of the long-term complications of Starr-Edwards ball valve implantation.
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