Safety and efficacy of plasma exchange therapy for Kawasaki disease in children in intensive care unit: case series

Background We have reviewed four cases of Kawasaki disease treated with plasma exchange with 5% albumin in electrolyte-balanced solution, according to the recommended guidelines for Kawasaki disease in the intensive care unit, as their responses to intravenous immunoglobulin therapy were poor. Case presentation The four cases were aged between 5 months and 3 years and weighted between 6.4 and 15.6 kg. The plasma levels of C-reactive protein were significantly decreased after plasma exchange (p < 0.05). The dilatations of the coronary artery were found in two cases, but both of them were ameliorated until 1 month after the onset and the other cases recovered without any complications. However, we recognized that one case showed marked decreases in coagulation factors, especially in fibrinogen after each plasma exchange even with a transfusion of fresh frozen plasma. Conclusions Plasma exchange with 5% albumin was effective for refractory Kawasaki disease. However, as there was a possibility of coagulation disorder, attention should be given to changes in coagulation factors like fibrinogen, especially in small patients who need frequent plasma exchange.