Limitations
bronchiolitis
BRONCHIOLITIS
This study has limitations. Parents could not be blinded to the intervention, which affected their compliance with the study protocol and may have affected some of the outcomes. However, the per-protocol analyses confirmed a lack of between-group differences in the bronchiolitis progression between groups. Because the 95% CI around the difference in the primary outcome in the per-protocol analysis includes 15%, the study was underpowered to detect small differences. In the current nasal suctioning–oriented practice milieu, it was not feasible to include a group with no suctioning. Therefore, although our prestudy work showed that the bulb provides minimal suctioning, the results may not be fully applicable to no suctioning. In addition, the results of this study are not generalizable to suctioning practices in the ED or in the inpatient setting.