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  • Title: B-type natriuretic peptide and N-terminal pro-BNP in the acute phase of Kawasaki disease.
    Author: Iwashima S, Ishikawa T.
    Journal: World J Pediatr; 2013 Aug; 9(3):239-44. PubMed ID: 23335186.
    Abstract:
    BACKGROUND: This study was undertaken to identify factors correlating with plasma levels of B-type natriuretic peptide (BNP) and its N-terminal portion (NTpro BNP) in the acute phase of Kawasaki disease (KD). METHODS: This study included 91 patients with KD treated at a hospital affiliated to Hamamatsu University School of Medicine between October 2003 and June 2011. We quantified BNP and NT-pro BNP in the acute phase. The BNP level was expressed as the NT-pro BNP level using the formula NT-pro BNP=9.080×BNP(0.923). We sought relationships between NT-pro BNP values and different clinical and laboratory data in the acute phase of KD. RESULTS: Of the 91 patients, 14 failed to respond to the initial intravenous immunoglobulins therapy. NTpro BNP levels were significantly higher in these nonresponders than in the responders (1689.3±1168.8 pg/ dL vs. 844.4±1276.3 pg/dL, P<0.001). Seventeen patients developed coronary artery lesions, but this was not associated with NT-proBNP levels. NT-pro BNP was positively correlated with CRP (r=0.421, P<0.001) and negatively correlated with the hematocrit (r=-0.206, P=0.050), Na value (r=-0.214, P=0.041) and albumin level (r=-0.345, P<0.001). Stepwise multiple linear regression analysis with NT-pro BNP as a dependent variable revealed significant correlations with CRP and albumin (beta=0.345, P=0.001; beta=-0.225, P=0.027). CONCLUSIONS: A high level of NT-pro BNP in acute phase KD is associated with systemic inflammatory responses and increased vascular permeability. The NT-pro BNP level is a useful marker to identify potential non-responders to IVIG among KD patients.
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