Relationship between caloric intake and length of hospital stay for infants with bronchiolitis.

OBJECTIVE Poor oral intake is a common presenting symptom among infants hospitalized with bronchiolitis. The prevalence, degree, and duration of iminished caloric intake in these infants have not been studied. Our goal was to determine the daily caloric intake among infants admitted with bronchiolitis and to evaluate the relationship between early hospital caloric intake and length of stay (LOS). METHODS We conducted a retrospective chart review of infants aged <1 year admitted to Children's Hospital of Wisconsin with bronchiolitis who were placed in the bronchiolitis treatment protocol during the 2004-2005 season. Patient-, disease-, respiratory-, and nutrition-specific data were abstracted. RESULTS A total of 273 patients with bronchiolitis were admitted between November 1, 2004, and April 15, 2005; placed on the bronchiolitis protocol; and included in the study. Median caloric intake was diminished on day 1 (53 kcal/kg per day) and day 2 (64 kcal/kg per day). Caloric intake was slower to normalize in infants with progressively longer LOS, and a slower rate of increase from day 1 to day 2 was significantly correlated with longer LOS (r= -0.18; P= .002). Subgroup analysis revealed significant correlations between hospital day 2 caloric intake and LOS in formula-fed infants, breastfed infants, infants aged <183 days, and infants aged > or =183 days. CONCLUSIONS Caloric intake was diminished in the early course of hospitalization for infants who had bronchiolitis and slowest to normalize in infants with the longest LOS. Interventions aimed at decreasing LOS among infants admitted with bronchiolitis should consider the potential significance of nutrition for severely affected infants with this condition.