Long-term burden and respiratory effects of respiratory syncytial virus hospitalization in preterm infants-The SPRING study

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Abstract

The health status of premature infants born 321-350 weeks' gestational age (wGA) hospitalized for RSV infection in the first year of life (cases; n = 125) was compared to that of premature infants not hospitalized for RSV (controls; n = 362) through 6 years. The primary endpoints were the percentage of children with wheezing between 2-6 years and lung function at 6 years of age. Secondary endpoints included quality of life, healthcare resource use, and allergic sensitization. A significantly higher proportion of cases than controls experienced recurrent wheezing through 6 years of age (46.7% vs. 27.4%; p = 0.001). The vast majority of lung function tests appeared normal at 6 years of age in both cohorts. In children with pulmonary function in the lower limit of normality (FEV1 Z-score [-2; -1]), wheezing was increased, particularly for cases vs. controls (72.7% vs. 18.9%, p = 0.002). Multivariate analysis revealed the most important factor for wheezing was RSV hospitalization. Quality of life on the respiratory subscale of the TAPQOL was significantly lower (p = 0.001) and healthcare resource utilization was significantly higher (p<0.001) in cases than controls. This study confirms RSV disease is associated with wheezing in 32-35 wGA infants through 6 years of age.

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Carbonell-Estrany, X., Pérez-Yarza, E. G., García, L. S., Cabañas, J. M. G., Bòria, E. V., & Atienza, B. B. (2015). Long-term burden and respiratory effects of respiratory syncytial virus hospitalization in preterm infants-The SPRING study. PLoS ONE, 10(5). https://doi.org/10.1371/journal.pone.0125422

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