Risk factors and derived formosa score for intravenous immunoglobulin unresponsiveness in Taiwanese children with Kawasaki disease.

Background/purpose: Kawasaki disease (KD) is the most common pediatric vasculitis. The study aimed to identify the risk factors of intravenous immunoglobulin (IVIG) unresponsiveness from the initial clinical parameters of the Taiwanese KD patients.

Methods: We enrolled 248 KD (development dataset: 181, validation: 67) patients who received IVIG within 10 days after fever onset.