Late results of aortic valve replacement with the Starr-Edwards prosthesis.

Details are presented concerning 59 patients who left hospital between January 1964 and January 1969 after aortic valve replacement with the Starr-Edwards prosthesis. Of the 14 late deaths, 7 are known to have been due to causes related to the prosthesis and 4 to other causes. The 45 surviving patients have nearly all shown clinical improvement and only 3 are unable to work as a result of some complication of the operation. Aortic regurgitation and its consequences appear to be the most significant factor leading to symptoms. In 11 of 16 patients with anaemia there was evidence of intravascular haemolysis. The long-term consequence of this complication is not known.