Health problems linked with mouth breathing often go unnoticed

Health problems linked with mouth breathing often go unnoticed Washington, Apr 7 : The adverse affect of ‘mouth breathing’ often go unrecognised, as most health care professionals are not aware of the physical, medical and social problems linked with the habit, according to a new study. Read more on New Kerala

I was diagnosed with sleep apnea several years ago – should I be retested every so often for changes?

What type of follow-up is recommended following a diagnosis like this?

If you have a CPAP machine for sleep apnea, how often should it be adjusted?

I got mine four years ago but have not had an additional night at the sleep lab since then. Is this something that needs to be periodically monitored or should I just let sleeping (snoring?) dogs lie?