• Arch. Dis. Child. Fetal Neonatal Ed. · Mar 2014

    Review

    Definitions of extubation success in very premature infants: a systematic review.

    • Annie Giaccone, Erik Jensen, Peter Davis, and Barbara Schmidt.
    • Division of Neonatology, The Children's Hospital of Philadelphia and University of Pennsylvania, , Philadelphia, Pennsylvania, USA.
    • Arch. Dis. Child. Fetal Neonatal Ed. 2014 Mar 1; 99 (2): F124-7.

    ObjectiveStudies of extubation in preterm infants often define extubation success as a lack of reintubation within a specified time window. However, the duration of observation that defines extubation success in preterm infants has not been validated. The purpose of this study was to systematically review published definitions of extubation success in very preterm infants and to analyse the effect of the definition of extubation success on the reported rates of reintubation.DesignStudies including very preterm infants published between 1 January 2002 and 30 June 2012 that reported reintubation as an outcome were reviewed for definitions of extubation success. Stepwise multivariable linear regression was used to explore variables associated with rate of reintubation.ResultsTwo independent reviewers performed the search with excellent agreement (κ=0.93). Of the 44 eligible studies, 31 defined a window of observation that ranged from 12 to 168 h (7 days). Extubation and reintubation criteria were highly variable. The mean±SD reintubation rate across all studies was 25±9%. In studies of infants with median birth weight (BW) ≤1000 g, reintubation rates steadily increased as the window of observation increased, without apparent plateau (p = 0.001). This trend was not observed in studies of larger infants (p = 0.85).ConclusionsVariability in the reported definitions of extubation success makes it difficult to compare extubation strategies across studies. The appropriate window of observation following extubation may depend on the population. In infants with BW ≤1000 g, even a week of observation may fail to identify some who will require reintubation.

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