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COMPARATIVE STUDY
JOURNAL ARTICLE
Features of Kawasaki disease at the extremes of age.
Journal of Paediatrics and Child Health 2006 July
AIM: The diagnosis of Kawasaki disease (KD) in those outside the typical age range (6 months-4 years) is often delayed, potentially worsening prognosis. The features of KD in childrenor=5 years were compared with those presenting within the more typical age distribution.
METHODS: Korean children with complete diagnostic criteria for KD were grouped according to their age at presentation: Group A (or=5 years). The clinical features, laboratory findings and outcome in each group were compared.
RESULTS: Of 136 children presenting to a single centre between 1999 and 2003, 10 children were in Group A, 114 in Group B and 12 in Group C. The mean total fever duration was 8 days in Group C and 6.2 days in Group A (P=0.03). All children in Group C had cervical lymphadenopathy, compared with 50% of Group A and 64% of Group B (P=0.01). Coronary artery lesions were commoner in older children (Group C, 42%) compared with Group B (17%, P=0.05). All children had an equivalent leukocytosis, but Group C had significantly higher neutrophil counts (P=0.001). Group A had significantly lower mean haemoglobin (P=0.003) and total protein (P=0.002) at presentation and a more marked thrombocytosis 1 week after intravenous immunoglobulin therapy (P<0.05).
CONCLUSION: The clinical and laboratory phenotype of KD varies with age. Older children may have a more marked inflammatory response and worse outcome. Younger children who are treated appropriately may not have a chance to higher risk of coronary artery lesions.
METHODS: Korean children with complete diagnostic criteria for KD were grouped according to their age at presentation: Group A (or=5 years). The clinical features, laboratory findings and outcome in each group were compared.
RESULTS: Of 136 children presenting to a single centre between 1999 and 2003, 10 children were in Group A, 114 in Group B and 12 in Group C. The mean total fever duration was 8 days in Group C and 6.2 days in Group A (P=0.03). All children in Group C had cervical lymphadenopathy, compared with 50% of Group A and 64% of Group B (P=0.01). Coronary artery lesions were commoner in older children (Group C, 42%) compared with Group B (17%, P=0.05). All children had an equivalent leukocytosis, but Group C had significantly higher neutrophil counts (P=0.001). Group A had significantly lower mean haemoglobin (P=0.003) and total protein (P=0.002) at presentation and a more marked thrombocytosis 1 week after intravenous immunoglobulin therapy (P<0.05).
CONCLUSION: The clinical and laboratory phenotype of KD varies with age. Older children may have a more marked inflammatory response and worse outcome. Younger children who are treated appropriately may not have a chance to higher risk of coronary artery lesions.
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