A few weeks ago, NTMir presented a series of lectures on relevant topics for patients. Recordings of the lectures are now available on YouTube. The first one is on airway clearance and the presenter is the impressive Dr Pamela McShane. I tried but couldn't do a link here but
you can find it by searching her name and airway clearance. It is rather long because she answers a lot of questions at the end. It is well worth the time because it covers everything we need to know about airway clearance. Also Dr McShane is terrific.