Arterial Blood Lactate in Children Primarily Submitted to Noninvasive Ventilation: A Time-Dependent ROC Analysis

Abstract

The purpose of this study was to evaluate blood lactate measurements and failure to noninvasive ventilation (NIV) in children admitted to a pediatric intensive care unit. This was a retrospective observational single-center study performed between June 2016 and June 2017. Dynamic lactate indices and failure to NIV in 63 children < 18 years and > 1 month old were examined; we considered blood lactate analyses at time 0, 6, 24, and 48 hours. NIV failure group had a higher pediatric risk of mortality (PRISM) score. Lactate indices decreased over time in the success group (p < 0.001). The best area under the curve observed was 69%, at 48 hours. Considering all measurements, the area under the curve for time-dependent receiver-operating characteristic curve was 58.6%. This study demonstrated blood lactate indices evolution over time in children submitted to NIV.