Buried in mid-winter, January generally portends the ramping up of bronchiolitis season in the majority of the United States. Of particular note for this season, the American Academy of Pediatrics has published a new clinical practice guideline, updated from the 2006 edition.1
The guideline document is divided into three sections: diagnosis, treatment, and prevention. Only the diagnosis and treatment sections have relevance to emergency physicians. Specifically covered by these guidelines are infants ages 1 month to 23 months, but reasonable generalizations may be made beyond the upper limit of this population. As with all guidelines, it should be emphasized that these reflect reasonable practice principles, and acknowledging appropriate variation may be considered both acceptable and necessary.