Cardiac manifestations of thrombotic thrombocytopenic purpura.

Three patients with thrombotic thrombocytopenic purpura and different cardiac complications are reported. Myocardial involvement due to microvascular thrombosis and haemorrhages, pericardial effusion and non-bacterial thrombotic endocarditis were found at autopsy. The importance of continuous cardiac monitoring in the treatment of these patients is emphasized.