This webinar aims to help improve understanding of breathing system classification and components of these systems, calculate FGF rates for NRB systems, identify and understand differences between NRB and RB systems, and understand how an RBS works. This one-hour webinar was first broadcast as part of BSAVA’s Learn@Lunch series. Learn@Lunch broadcasts are available to BSAVA members only and are free to attend - visit the education page of the BSAVA website for details of future Learn@Lunch webinars. Recordings will be available for 3 years via the BSAVA Webinar Library.