Massive haemolysis after double valve replacement

A case of massive haemolysis after insertion of a Beall valve mitral prosthesis and a Starr Edwards aortic prosthesis is reported. The case appears to be unusual in the early onset and rapid increase of haemolysis in the presence of normally functioning valves, leading to acute renal failure from haemoglobinuria. In the light of the experience of others, the haemolysis may have been due to the Beall Dacron velour covered valve.