Hemolytic uremic syndrome/thrombotic thrombocytopenic purpura: outcome with plasma exchange.

Abstract

A retrospective analysis was made of 14 consecutive adults with hemolytic uremic syndrome/thrombotic thrombocytopenic purpura (HUS/TTP) who were treated with plasma exchange (PE). In six patients the disease was primary, whilst in eight HUS/TTP was considered secondary to an associated condition. Thirteen patients had renal involvement, six had central nervous system symptoms or signs, three had fever, and one had myocardial damage. Twelve patients (86%) recovered. Four of these relapsed, but responded to further treatment. Two patients failed to respond and died. Hematological response occurred rapidly in survivors: thrombocytopenia resolved after a median of four exchanges, and hemolysis a..