Please excuse my ignorance on this subject.........but why does breathing thru your mouth when you sleep result in excessive air in your bag? I assume that's what you mean by "ballooning". I breathe thru my mouth sometimes when I sleep and I never get air in my bag. I always thought that was caused by gases formed during the fermentation of what you ate. I did a quick search on Ballooning and found this page......probably all old news to you, but it didn't mention anything about how you breathe at night. Can you explain that a little more?
Hello Bob. One of the problems with articles such as the one you site is that author's are sometimes not in possession of all the perspectives on the issues they write about. The article seems quite comprehensive as far as it goes but omits the possibility of swallowing air whilst asleep. Sometimes this phenomenon is mentioned in relation to chewing gum and swallowing small amounts of air as one swallows the liquid formed by chewing.
As someone who suffers with sleep apnoea, I can attest to the fact that involuntary swallowing can occur at the point of waking up (sometimes at the rate of 30-40 times per hour!). Using a CPAP machiine can eliminate these bouts of waking and subsequent swallowing. However, without using a chinstrap, the swallowing can still occur.
In fact, the first night I used the CPAP machine (which pumps air directly into the air passages) I did not have a chinstrap and 'I' blew up like a balloon and was in agony until the air escaped from both ends of my body and released the pressure. This incident happened before I had a stoma but the effect would be much the same- except with one different outlet.
I hope this gives at least one different perspective on this subject for you.