You said mine was lower than my son's (but didn't tell me the number), and his reading was about 60, IIRC. I felt completely fine, though. I wonder about that - am I an unusual case, or is the pulse oximeter having accuracy issues?
Hey:
Yes, I kinda/sorta remember that. I think I made a mistake or at least can't imagine saying 60 was OK. The LCD on the one I got is really hard to read in daylight and I vaguely remember after I left you thinking "oooops." 60 would be way too low no matter what. The couple of people I saw later with 65 & 67 were in severe HAPE. Most everyone else was over about 87, upright & talking, though sometimes with mild AMS.
I think it was after I saw you guys that I ran into another young boy who I thought was having "just" a mild case of AMS. I did recommend, though, that they stay at Charlotte until we were sure. Good thing. Within 8 hours he was acute and had to be flown out. I'm now a lot more paranoid about AMS and especially in young boys, who seem to have a higher statistical tendency towards HAPE.
On the bright side, and especially when I first started using it, I didn't use it for diagnostics, just trying to get a feel for what the number meant compared to what the person described and looked like. When they're belly up and gasping, I don't really need the number to tell me things are not going well. I thought it might help for the more marginal cases, and it might, but I still don't have a feel for it yet. Nothing like being on a learning curve... .
g.