Elsevier

The Journal of Pediatrics

Volume 131, Issue 6, December 1997, Pages 888-893
The Journal of Pediatrics

Prevalence of coronary artery abnormalities in Kawasaki disease is highly dependent on gamma globulin dose but independent of salicylate dose,☆☆,

https://doi.org/10.1016/S0022-3476(97)70038-6Get rights and content

Abstract

The efficacy of intravenous gamma globulin (IVGG) for treatment of Kawasaki disease (KD) is clearly established. In a metaanalysis, we reviewed U.S. and Japanese multicenter, randomized controlled studies regarding the effect of various doses of IVGG with aspirin administered within the first 7 to 10 days of illness on the prevalence of coronary artery abnormalities in KD. We studied 1629 patients with acute KD from the six reported studies that included blinded echocardiographic assessments. In 868 Japanese patients treated with moderate-dose aspirin (30 to 50 mg/kg per day), the prevalence of coronary abnormalities at the subacute stage (illness day 30) was 26.8% with aspirin alone, 18.1% with total IVGG dose < 1 gm/kg, 17.3% with total IVGG of 1.0 to 1.2 g/kg, and 5.3% with total IVGG of 2 gm/kg; the corresponding prevalence at the convalescent stage of illness (illness day 60) was 17.5%, 13.5%, 9.8%, and 3.5%, respectively. In 761 U.S. patients treated with high-dose aspirin (80 to 120 mg/kg per day), the prevalence of coronary abnormalities at the subacute stage (2 to 3 weeks after enrollment) was 23.0% with aspirin alone, 9.0% with total IVGG of 1.0 gm/kg, 8.6% with total IVGG of 1.6 gm/kg, and 4.6% with total IVGG of 2.0 gm/kg; corresponding prevalence at the convalescent stage (6 to 8 weeks after enrollment) was 17.7%, 9.0%, 6.3%, and 3.8%, respectively. When all data for the 1629 patients were combined, the prevalence at the subacute stage was 25.8% with aspirin alone, 18.1% with IVGG < 1 gm/kg, 15.7% with IVGG of 1 to 1.2 gm/kg, 8.6% with IVGG of 1.6 gm/kg, and 4.8% with IVGG of 2 gm/kg (adjusted R2 = 0.966, p = 0.0017); corresponding prevalence at the convalescent stage was 17.6%, 13.5%, 9.7%, 6.3%, and 3.8%, respectively (adjusted R2 = 0.993, p = 0.0602). The prevalence of coronary abnormalities was inversely related to the total dose of IVGG and was independent of the aspirin dose. We conclude that 2 gm/kg IVGG combined with at least 30 to 50 mg/kg per day aspirin provides maximum protection against development of coronary abnormalities after KD. (J Pediatr 1997;131:888-93)

Section snippets

Methods

We identified 15 published multicenter controlled studies of IVGG treatment of acute KD written in English or Japanese since 1984.3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 Because the evaluation of echocardiograms can be somewhat subjective, ideally they should be interpreted by readers unaware of the patient's treatment assignment to avoid bias. We selected 7 of the 15 studies for analysis of the effect of IVGG and aspirin on prevalence of CAA because they were multicenter,

Moderate-dose aspirin plus IVGG

Data for 868 Japanese patients treated with moderate-dose aspirin (30 to 50 mg/kg per day) in five multicenter trials (in three reports) were available for analysis.10, 15, 16 The prevalence of CAA at the subacute stage was 26.8% with aspirin alone, 18.1% with total IVGG dose < 1 gm/kg, 17.3% with total IVGG of 1.0 to 1.2 gm/kg, and 5.3% with total IVGG dose of 2 gm/kg; corresponding figures at the convalescent stage were 17.5%, 13.5%, 9.8%, and 3.5% respectively. The prevalence of CAA after

Discussion

The first published (in Japanese) preliminary report of IVGG treatment of KD in February 1983 was a series of five patients treated with 400 mg/kg for 5 days in an uncontrolled trial by Furusho et al.20 The first controlled study of the effect of IVGG on KD was described in Japanese by Kondo et al.21 in July 1983. These investigators studied 41 patients with KD treated by the eighth illness day, comparing 19 patients who received a single infusion of 100 mg/kg intact IVGG plus aspirin with 22

Acknowledgements

We thank Edwin Chen, PhD, for statistical advice.

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      However, CAA can be prevented by suppressing inflammation early in acute phase treatment. Initiation of intravenous immunoglobulin (IVIG) (2 g/kg) within 10 days of fever onset has been confirmed to reduce the risk of CAA by approximately 20% (from 25% to <5%) [4–8]. High-dose IVIG (2 g/kg) or combination with steroid therapy as 1st line treatment has reduced rates of cardiac sequelae in Japan [9].

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    From the Department of Pediatrics, Northwestern University Medical School, Children's Memorial Hospital, Chicago, Illinois, and the Department of Pediatrics, School of Medicine, Chiba University, Chiba, Japan.

    ☆☆

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