“…There have been a number of reports of patients who have developed overt hemolysis following open-heart surgery (Andersen et al, 1965;Brodeur et al, 1965;DeCesare, Rath, and Hufnagel, 1965;Gehrmann and Loogen, 1964;Kezdi, Head, and Buck, 1964;Pirofsky et al, 1965;Reed and Dunn, 1964;Sayed et al, 1961;Sears and Crosby, 1965;Sigler et al, 1963;Stewart and Sturridge, 1959;Verdon, Forrester, and Crosby, 1963;Viner and Frost, 1965). Of 57 patients so far reported, 8 had repairs of defects without insertion of valves and the remainder had one or more valves replaced.…”