Slain KN, et al. - Using single-center, retrospective chart review design, researchers investigated whether, among PICU patients with bronchiolitis not immediately requiring invasive mechanical ventilation, those meeting at risk for pediatric acute respiratory distress syndrome criteria had worse clinical outcomes, including higher rates of pediatric acute respiratory distress syndrome development. This study was conducted at mixed medical-surgical PICU within a tertiary academic children’s hospital and included children 24 months old or younger with a primary diagnosis of bronchiolitis admitted to PICU from September 2013 to April 2014. They excluded children intubated before PICU arrival. A total of 115 subjects with a median age of 5 months (2–11 mo) were included. Median PICU length of stay and median hospital length of stay were 2.8 days (1.5–4.8 d) and 5 days (3–10 d), respectively. According to findings, children with critical bronchiolitis with relatively unfavorable clinical courses could be successfully detected by the recent definition of at risk for pediatric acute respiratory distress syndrome.