Just purchased a Inogen G3 (used) (450 hrs) and a Zacurate Oxymeter went to Sequoia National forest and at 5K ft I was having trouble breathing (not bad) at 7K feet it was harder to breath...But not as bad as being downwind from the current "lake" fire in Califonia (8-18-2020) I can usually go from 70-92 in about 30 seconds...but the smoke has me hitting lows on my oxymeter of 65..what is the lowest you have ever heard of...? Am I in corpse territory, on my Oxymeter scale...?
Retired nurse friend says a reading of 90 (on oxymeter) they put you on oxygen (he was an ER nurse)..at 84 you get a DMV placard (I love my placard) ...not sure what a 65 oxymeter reading.. puts you in....? What is your lowest reading...? Thank You