Korean Journal of Pediatrics 2006;49(6):672-676.
Published online June 15, 2006.
Clinical significance of follow-up laboratory tests, performed at 6 weeks after the onset of Kawasaki disease
Il Ji Oh1, Kyung Hee Moon1, Myung Eun Hong1, Yeon Soon Kim2, Chang Woo Lee1, Hyang Suk Yoon1
1Department of Pediatrics, Wonkwang University School of Medicine
2Wonkwang Health Science College, Iksan, Korea
가와사끼병에서 발병 6주째에 시행하는 추적검사의 임상적 유용성에 관한 고찰
오일지1, 문경희1, 홍명은1, 김연순2, 이창우1, 윤향석1
1원광대학교 의과대학 소아과학교실
Hyang Suk Yoon, Email: yhs0520@wonkwang.ac.kr
: Low dose aspirin is used due to its antiplatelet effect for the subacute phase of Kawasaki disease(KD). It is usually used for 6-8 weeks, then various hematologic laboratory tests and follow up echocardiography for evaluating coronary abnormalities are performed. Our review investigated the usefulness of various follow up laboratory tests performed at 6 weeks after the onset of KD.
: Two hundred eighty-two children diagnosed and hospitalized with KD were identified by reviewing patient's charts. Cases which were diagnosed between January 1997 and December 2004 were included in this study. We reviewed laboratory data including leukocytes, platelet counts, antistreptolysin O(ASO), erythrocyte sedimentation rate(ESR), C-reactive protein(CRP), aspartate aminotransferase(AST), alanine aminotransferase(ALT), urinalysis, and echocardiograms performed at admission and 6 weeks after the onset of KD. Paired t-test and Fisher's exact test, as well as logistic regression tests, were used for the statistical analysis.
: At 6th week data, ESR and CRP were still elevated in 35(12.4 percent) and 12(4.3 percent) patients, respectively. Sterile pyuria were all normalized. But, 36 patients(12.8 percent) showed thrombocytosis, 22(7.8 percent) elevated AST, 15(5.3 percent) leukocytosis, and 6(2.1 percent) coronary abnormalities. Coronary abnormalities at the 6th week were only shown in patients with initial abnormalites. Younger age and initial thrombocytosis were risk factors for thrombocytosis at the 6th week.
: All children with initial coronary abonormalites should have an echocardiogram at 6 weeks after the onset of fever. In view of case-effectiveness, additional echocardiographic studies are justified only if abnormalities are present at admission. ESR, CRP, and urinalysis performed at the 6 weeks after onset of KD is not significant for clinical information of progression. Platelet count should be estimated at 6th week for a judgement of continuous antiplatelet therapy.
Key Words: Kawasaki disease , Follow-up , Laboratory tests

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