O2 sat is a bit confusing. You would think anything above 90% was an A. Low 90’s is already a B. Mid 80’s is a D and requires supplemental oxygen. Low 70’s is an F minus. Are you alive in the low 60’s? Wow.
Just started with my CPAP. Going good so far. I wore a mask for 14 years. So an easier transition I think.
Lord didn’t want me yet...