A controlled study was conducted to assess the role of high-dose i.v. immun
oglobulin (HDIVIG) therapy in neonatal immune haemolytic jaundice. Patients
with ABO and/or Rh incompatibilities proved by significant hyperbilirubina
emia (>204 mmol l(-1)), positive direct antiglobulin test and high reticulo
cyte count (greater than or equal to 10%) were randomly assigned to receive
either conventional phototherapy alone or phototherapy with high-dose i.v.
immunoglobulin (1 g kg(-1), over 4 h) as soon as the diagnosis was establi
shed. Exchange transfusions were performed if serum bilirubin concentration
s exceeded 290 mmol l(-1) and increased by more than 17 mmol l(-1) per h de
spite both treatment manoeuvres. Eight of 58 patients in the HDIVIG group r
equired exchange transfusions, whereas it became necessary in 22 of 58 pati
ents in the control group (p < 0.001). The durations of phototherapy and ho
spitalization in terms of hours were significantly shorter in the HDIVIG gr
oup (p < 0.05). No side effects of HDIVIG therapy were observed. In conclus
ion, HDIVIG therapy in newborns with ABO or Rh haemolytic diseases reduces
haemolysis, serum bilirubin levels and the need for blood exchange transfus
ion, a procedure which has potential complications and carries a risk of mo
rtality.