Predictors of delayed treatment of Kawasaki disease in community and tertiary care hospitals
© Luca et al; licensee BioMed Central Ltd. 2012
Published: 13 July 2012
The aim of this study was to define a comprehensive profile of patients at risk for a delayed diagnosis of Kawasaki disease (KD) including non-patient related variables such as caregiver behavior and health care providers’ experience with KD.
From 1995 to 2006, all hospitals and pediatric cardiologists in Ontario were contacted to identify all children diagnosed with KD. The following data were retrieved: demographics, day of week admitted, symptoms, clinical features, and treatment. Hospital KD caseload was defined as low (<20 cases/year) or high (≥20 cases/year). The only institution with a KD program was the Hospital for Sick Children in Toronto. The primary outcome was the number of days of fever prior to treatment with intravenous immunoglobulin (IVIg). Secondary outcome was the number of days between admission and treatment with IVIg. Data analysis was performed using multivariable linear and logistic regression models. The estimate* (est) reflects the change in the outcome (days) associated with a 1 unit increment (if continuous) or the presence (if binary) of the variable. The analysis was carried with and without data from the tertiary care centre.
2378 patients were included, 1472 (62%) of which were male. Median age was 3.2 years (range 0.05-22.0), and 73% were ≤4 years. Thirty percent of patients had <4 clinical features of KD. The median number of days of fever at diagnosis was 6 (range 0-30). Eight percent of patients had >10 days of fever at admission, and 13% were treated with IVIg at >10 days of fever.
Clinical features associated with a greater number of days of fever at time of IVIg treatment and delay between admission and treatment with IVIg.
Greater number of days of fever at IVIg
Greater delay between admission and IVIg
Lower number KD criteria
Absence of conjuctivitis
Presence of arthritis
Non-patient related risk factors associated with delayed diagnosis and treatment of KD include admission to low-caseload hospitals and admission on Sunday. This emphasizes the need for interventions to target both parents and health care professionals, especially those in locations with low KD case volume and where resources may be limited on weekends.
Nadia Luca: None; Joyce C.Y. Ching: None; Cedric Manlhiot: None; Brian W. McCrindle: None; Rae S.M. Yeung: None.
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