Additional IVIG treatment and corticosteroid pulse therapy
IVIG-resistant patientswere randomly divided into two groups by random
number table: group A receivedadditional IVIG (2g/kg given as a single
intravenousinfusion); group B receivedmethylprednisolone15
mg.kg−1.d−1intravenously for 3 days,
without asubsequent course and taper of oral prednisone. Both groups
tookaspirin orally
(30–50mg.kg−1.d−1).During
corticosteroid pulse infusion and IVIG treatment, patients
underwentcontinuous cardiac monitoring. Frequentevaluations were made
after the infusion untilvital signs were stable.