The Optimal Dosages of Gammaglobulin and Aspirin in Treating Kawasaki Disease

Han, Seung Baik; Choi, Jong Woon; Kim, Soon Ki; Chung, Sei Woo; Kim, Jeung Gyu; Son, Byong Kwan

Abstract

PURPOSE: There are some disagreements about the optimal dosages of intravenous gammaglobulin(IVGG) and oral aspirin(ASA) in the treatment of Kawasaki disease. So authors performed a prospective clinical study to evaluate the efficacy of IVGG 1g/kg plus ASA 50mg/kg/day.
METHODS
We treated 29 patients who were admitted to Inha University Hospital from June 1993 through May 1994 with IVGG 1g/kg plus ASA 50mg/kg/d. We compared the outcomes of above patients with those of two other groups of patients, group A and B in authors' previous study. Group A(20 patients) had been treated with IVGG 2g/kg plus ASA 50mg/kg/d and group B(19 patients) with IVGG 2g/kg plus ASA 100mg/kg/d. The outcomes had been similar in group A and B, which was published on this journal in 1995 (vol. 38:378-385).
RESULTS
1) Twenty five patients(86.2%; group C) were given only one dose of IVGG 1g/kg, and remaining 4 patients(13.8%; group D) were given two doses of IVGG 1g/kg because of persistent high fever. 2) The age and sex distributions, durations of fever before treatment, and durations of ASA therapy in group C were not significantly different from those in group A and B (p>0.05). 3) Laboratory findings on admission in group C were not significantly different from those in group A and B, except that the mean ESR was lower in group C than in group A and B (35.1+/-19.8 vs 55.5+/-5.95 & 50.2+/-11.4mm/hr; p<0.01, respectively). 4) The durations of fever after treatment in group C were not significantly different from those in group A and B (1.32+/-1.07 vs 2.65+/-3.28 & 1.74+/-1.52 days; p>0.05, respectively). 5) In group C, the mean hemoglobin concentration at the 3rd week of illness was higher than in group A (11.1+/-0.98 vs 10.1+/-1.24g/dl; p<0.05), the mean platelet count at the 2nd week of illness was lower than in group A (59.4+/-18.0x10(4) vs 73.6+/-19.0x10(4)/ l; p<0.05), and the mean ESRs at the 2nd and 3rd week of illness were lower than in group A (43.3+/-14.7 vs 54.0+/-9.16, 31.9+/-19.0 vs 47.7+/-13.0mm/hr; p<0.05, respectively). Other follow-up laboratory findings in group C were not significantly different from those in group A and B. 6) Echocardiography was done 2 and 4 weeks after onset of illness. Coronary arterial dilation was observed in four(4/25; 16%) and two(2/23; 8.7%) patients respectively in group C, and the proportions were not significantly different from those in group A(40% & 25%) and B(31.6% & 10.5%) (p>0.05, respectively). In follow-up examinations, coronary aneurysm was observed in only one(1/23; 4.3%) in group C, which was similar to group A(1/18; 5.5%) and B(1/19; 5.2%) (p>0.05, respectively). Giant aneurysm was not observed in any patients. 7) Four patients(group D) were given one more dose of IVGG 1g/kg because high fever persisted 48 hours after injection of the first dose of IVGG. Afterthen fever subsided within 1 to 7 days. Echocardiography revealed mild coronary arterial dilation in two patients initially, but follow-up examinations revealed no coronary aneurysm.
CONCLUSIONS
The medium-dose combined regimen with IVGG 1g/kg plus ASA 50mg/kg/d seems to be more cost-effective than the high-dose regimen with IVGG 2g/kg plus ASA 50-100mg/kg/d. If high fever persists 48 hours or more after the first dose of IVGG 1g/kg, it is desirable to give one more dose of IVGG 1g/kg.