3 ms·

Don't forget he's in CO, SPO2 is lower at altitude. Nobody has 100% in Denver- unless they have carbon monoxide poisoning (or so I'm told).

• nradov 7y ago
  Average blood oxygen levels only drop about 5% in Denver.
  • ip26 7y ago
    Right, so if a healthy person is typically 95% then 89% is less dramatic. Perhaps comparable to having 94% at sea level.