Linda, That is good information on aspiration while lying down or during the day. I recently returned from Mayo in Jacksonville FL and have started getting some of my lab results. On the routine bacterial culture they found Haemophilus so I was doing a little research and came across some interesting info on aspiration. Here is an excerpt that pertains to aspiration "About half of the adult population aspirates some amount of oropharyngeal secretions while lying down in sleep position, but effective mechanisms like mucociliary clearance, coughing, and humoral and cellular immune processes are in place which protects the lower airways and prevents the occurrence of recurrent infections. That is the reason why silent aspiration is a concern with advancing age and is a significant factor in cases of community-acquired pneumonia" So if one has Bronchiectasis you may be even more likely to aspirate because our airways don't work like normal. The full article is here but it is very lengthy and really pertains mostly to someone with a Haemophilus infection. https://www.ncbi.nlm.nih.gov/books/NBK562176/ Bill