General Discussion on any topic relating to CPAP and/or Sleep Apnea.
Just a thought from here... I think if I was 88 regardless of anything much - OSA or not - I might cut back on uphills at high elevations (or even low ones!) because it may not be the best thing all around at that age... maybe even for ex-olympic athletes!
It sounds like she should be using supplemental oxygen while awake and moving around, especially during strenuous activity. According to the sleep study her baseline oxygen saturation while awake, on room air, just sitting/laying around, was 89%, which is low. Then, you say during a hike her oxygen saturation went as low as 79%, which is very low. IMO she should be making a doctor's appointment and getting checked out by a cardiologist as clearly she has more problems than sleep apnea and being old.
ResMed S9 VPAP ST-A with iVAPS