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Re: Low Oxygen Saturation (SPO2) Data
Posted: Mon Mar 26, 2018 9:36 am
by Pugsy
scaredstraight wrote: ↑Mon Mar 26, 2018 9:07 am
Any idea what is causing the sleep onset 70s?
My first thought is loss of contact artifact if it looks like the other ones above.
scaredstraight wrote: ↑Mon Mar 26, 2018 9:07 am
last night at the first sleep onset my SPO2 dropped to 74 - it would have stayed there had my alarm not gone off and woken me up.
Incorrect assumption that waking causing the O2 to immediately go back to normal.
Real desats take place over a period of several minutes and return to normal over a period of several minutes.
They don't correct themselves in the blink of an eye once you wake up and breathe normally.
More likely the alarm woke you and when you woke up the loss of contact artifact fixed itself and that's why things returned to normal.
The alarm....all it knows is the reading at the time...it can't tell if the low level is from a desat or loss of contact artifact.
Re: Low Oxygen Saturation (SPO2) Data
Posted: Mon Mar 26, 2018 11:15 am
by scaredstraight
Pugsy wrote: ↑Mon Mar 26, 2018 9:36 am
scaredstraight wrote: ↑Mon Mar 26, 2018 9:07 am
Any idea what is causing the sleep onset 70s?
My first thought is loss of contact artifact if it looks like the other ones above.
scaredstraight wrote: ↑Mon Mar 26, 2018 9:07 am
last night at the first sleep onset my SPO2 dropped to 74 - it would have stayed there had my alarm not gone off and woken me up.
Incorrect assumption that waking causing the O2 to immediately go back to normal.
Real desats take place over a period of several minutes and return to normal over a period of several minutes.
They don't correct themselves in the blink of an eye once you wake up and breathe normally.
More likely the alarm woke you and when you woke up the loss of contact artifact fixed itself and that's why things returned to normal.
The alarm....all it knows is the reading at the time...it can't tell if the low level is from a desat or loss of contact artifact.
I see - that makes sense. What do you think causes artifacts to occur more often at sleep onset in the beginning of the night?
Re: Low Oxygen Saturation (SPO2) Data
Posted: Mon Mar 26, 2018 11:33 am
by Pugsy
scaredstraight wrote: ↑Mon Mar 26, 2018 11:15 am
What do you think causes artifacts to occur more often at sleep onset in the beginning of the night?
Don't know but I would suspect simply moving around more at the beginning of the night and when transitioning to sleep.
You are asking questions that we can't answer. Sorry but if you really think that you have a problem with oxygen levels....see a doctor because you can't do anything about it without a doctor anyway.
Sometimes your own peace of mind is worth it if you just hear it from a doctor rather than some arm chair quarterbacks on the internet.
Alternately play with the pulse ox while awake and try holding your breath for as long as possible and see if the O2 levels change much and change rapidly or even immediately...my bet is that it won't while awake unless you have some serious significant lung issues going on and if that should happen you should definitely see a doctor sooner than later.
Also play with the loss of contact thing and watch what the device does.
Re: Low Oxygen Saturation (SPO2) Data
Posted: Mon Mar 26, 2018 11:59 am
by scaredstraight
Pugsy wrote: ↑Mon Mar 26, 2018 11:33 am
scaredstraight wrote: ↑Mon Mar 26, 2018 11:15 am
What do you think causes artifacts to occur more often at sleep onset in the beginning of the night?
Don't know but I would suspect simply moving around more at the beginning of the night and when transitioning to sleep.
You are asking questions that we can't answer. Sorry but if you really think that you have a problem with oxygen levels....see a doctor because you can't do anything about it without a doctor anyway.
Sometimes your own peace of mind is worth it if you just hear it from a doctor rather than some arm chair quarterbacks on the internet.
Alternately play with the pulse ox while awake and try holding your breath for as long as possible and see if the O2 levels change much and change rapidly or even immediately...my bet is that it won't while awake unless you have some serious significant lung issues going on and if that should happen you should definitely see a doctor sooner than later.
Also play with the loss of contact thing and watch what the device does.
Good idea on playing with holding oxygen - I will test that out.
The reason I am having doubts re: loss of contact thing is because usually any significant loss of contact prompts the oximeter to beep once (as opposed to repeat beeps for the alarm) and an indication that the finger is out OR silence but it will simply no longer indicate an SPO2 reading. Every time I have hit the 70's I woke up and looked at the oximeter and it had a reading.
I know, i am driving myself insane. Apologies if I am driving everyone else here insane with me!
Re: Low Oxygen Saturation (SPO2) Data
Posted: Mon Mar 26, 2018 3:49 pm
by TASmart
Your time below 80% is 0,1%. this is .001 * 10 hours = .01 hours * 60 minutes/hour = .6 minutes x 60 seconds/minute = 36 seconds. You need to stop imagining a problem where there is only an artifact. An artifact means the reading is not real, it's most likely caused by the instrument not reading the blood level of oxygenated hemoglobin properly, probably due to your moving your hand about. You do not have a desaturation issue.