I use CPAP every night for past 12yrs. Occasionally see strap marks in morning for say 30 min after waking up. Only see them if sleeping on my side or MASK IS TOO TIGHT.
This Biden story is BS. No way strap marks last for hours after removal. More likely special drug treatments or O2 just before going out in public.
FJB
The neuroprotective effects of oxygen therapy in Alzheimer’s disease: a narrative review