Our data show that IL-18 levels were elevated in the acute phase of KD and might be related to the formation of CALs.
We aimed to investigate which factors are associated with coronary artery lesions (CALs) during the acute and chronic stages in Taiwanese children with Kawasaki disease (KD). A total of 216 children with KD were enrolled. Clinical and laboratory data were obtained for each child within 7 days of illness. The patients were classified into KD children without acute CALs (n=135) and those with acute CALs (n=81) according to echocardiography data at Week 2 after treatment. Then, KD children with acute CALs were further divided into those without chronic CALs (n=55) and with chronic CALs (n=26) according to annual echocardiography data. During acute stage of KD, neutrophil count (<54%) [odds ratio (OR)=0.44, p=0.041]; second dose of intravenous immunoglobulin (IVIG) treatment (OR=5.01, p=0.009); and platelet count (≤400,000) (OR=0.42, p=0.006) were correlated with the risk of acute CALs. During chronic stage of KD, age (12-60 months) (OR=0.25, p=0.042); first dose of IVIG treatment (OR=0.12, p=0.005); and band count (≥3%) (OR=3.51, p=0.032) were correlated with the risk of chronic CALs. Our results suggest that the effects of neutrophil count, doses of IVIG treatment, and platelet count on CALs in acute KD are important. Age, doses of IVIG treatment, and band count are related to the persistence of CALs in chronic stage of KD.
Kawasaki disease (KD) is acute systemic vasculitis that occurs mainly in infants and children under 5 years of age. The etiology of KD remains unknown. KD is liable to be complicated by coronary artery lesions (CALs), which develop in approximately 15-25% of untreated KD children and in approximately 5% of KD children after intravenous immunoglobulin (IVIG) therapy. A single high dose of IVIG (2 g/kg) is the gold standard therapy in the acute stage of KD. However, approximately 8--38% of children are unresponsive to initial IVIG treatment and at increased risk for CAL development. Anti-inflammatory high doses of aspirin are recommended in conjunction with IVIG, but our study demonstrated that there is no evidence of efficacy in preventing CAL development. The usefulness of steroids in initial therapy for KD or treatment of IVIG-resistant patients is not well established. Other immunosuppressive therapies, including infliximab, have been used in the treatment of refractory KD, but merit additional investigation. Subclinical atherosclerosis may develop early in KD patients, which makes early initiation of therapy to improve chronic inflammation an important issue. Future multicenter studies may help to define the optimal management of KD patients.
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