Objective To establish current bronchiolitis management across hospitals in Wales, improve compliance with national guidelines and standardise evidence-based clinical practice.

Design A complete audit cycle with implementation of a multifaceted education bundle prior to the follow-up audit.

Setting Twelve acute paediatric departments between 1 November and 31 December in 2012 and 2013.

Patients All infants under 12 months with a clinical diagnosis of bronchiolitis.

Interventions The first audit assessed management of bronchiolitis with reference to both the Scottish Intercollegiate Guideline Network (SIGN) guidelines and local hospital guidelines. Following analysis and dissemination of these results, an education bundle was implemented nationwide, with completion of the audit cycle to assess change.

Main Outcome Measures Compliance with SIGN recommendations for investigation, treatment and discharge. Compliance with the education bundle requirements also assessed in 2013.

Results Data were collected for 1599 infants. The education bundle was delivered in all hospitals. The level of severity, defined by oxygen saturations in air at presentation, length of stay and paediatric intensive care unit transfers, was equivalent for both years. Mean compliance percentage (95% CI) across Wales significantly improved between 2012 and 2013, with compliance with investigations increasing from 50% (46% to 53%) to 71% (68% to 74%), with management increasing from 65% (61% to 68%) to 74% (71% to 77%), and overall compliance improving from 38% (37% to 39%) to 59% (56% to 62%) in 2013.

Conclusions This audit demonstrated a significant improvement in compliance following implementation of our educational bundle. This has enabled improvement in standardised and evidence-based patient care across Wales.