[Chest X-ray and acute bronchiolitis: Are these indications decreasing?].

Objective: A management protocol for infants hospitalized for acute bronchiolitis, established after the study conducted in our unit in 2012, recommends a chest X-ray when the clinical course is unusual or if a differential diagnosis is suspected. The goal of this study was to evaluate professional practices after the introduction of this new management protocol.

Study Design: Retrospective descriptive study in two pediatric units from October 2013 to March 2015, including infants (0-23 months) hospitalized for their first episode of acute bronchiolitis without any underlying chronic condition.

Result: Overall, 599 infants were included (median age, 3.7 months, 54 % boys). Nearly six out of ten (n=355, 59.3 %) had at least one chest radiograph (38.5 % fewer than in 2012). It was abnormal in 96.3 % of cases, revealing distension and/or bronchial wall thickening (56.7 %), focal opacity (23.5 %), or atelectasis (19.5 %). An X-ray was performed out of the recommendations in 42.5 % of cases. The chest X-ray result led to management changes in 52 infants with prescription of antibiotics for pneumonia (86.5 %) and allowed the diagnosis of heart disease in one case (0.2 %). Management of acute bronchiolitis (X-ray and antibiotics) was statistically different between the two pediatric units.

Discussion: This protocol led to a significant decrease in the number of chest X-rays. However, many are still performed out of the recommendations, resulting in an increase of antibiotic use for pneumonia.

Conclusion: The decrease in use of chest X-rays in acute bronchiolitis for hospitalized infants was significant but remains insufficient.