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Predicting severity of sleep apnoea with just oximetry?
#11
(05-25-2016, 12:07 PM)Asjb Wrote: A friend suspects he has sleep apnoea (snoring etc) but does not yet want to 'put his head above the parapet' by seeing a doctor or having a sleep test.

Great news - my friend has now asked for a referral for ? sleep apnoea and will be seeing a chest physician soon.

(06-03-2016, 06:36 PM)PaytonA Wrote: The severity of your desats should correlate with the severity of what is causing the problem.

PaytonA

Hello Payton A - this is the bit I am not at all sure about when one looks at (as I explained in my original post) the *number* of desats (not the lowest oxygen - I of course would agree with you that very low oxygen in SA = worse sleep apnoea).

I still doubt that a likely AHI level can be mathematically predicted based on the number of desats/hr with oxymetry (which was what someone else advised my friend - as in my original post)

Would you and anyone else be willing to share the numbers for their test AHI and their test desats/hr to test this theory? I had a test AHI of 58/hr, with desats of 28/hr (4% drop for 10 seconds).
......................................................................................................
All my opinions are only as an xPAP user trying to help other xPAP users.
No suggestions I may make should be taken as professional advice.
If you have medical concerns please consult a doctor


My current pressures: Auto-ASV. EPAP 10-13. PS 3-10

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#12
(06-04-2016, 11:33 AM)Asjb Wrote:
(05-25-2016, 12:07 PM)Asjb Wrote: A friend suspects he has sleep apnoea (snoring etc) but does not yet want to 'put his head above the parapet' by seeing a doctor or having a sleep test.

Great news - my friend has now asked for a referral for ? sleep apnoea and will be seeing a chest physician soon.

(06-03-2016, 06:36 PM)PaytonA Wrote: The severity of your desats should correlate with the severity of what is causing the problem.

PaytonA

Hello Payton A - this is the bit I am not at all sure about when one looks at (as I explained in my original post) the *number* of desats (not the lowest oxygen - I of course would agree with you that very low oxygen in SA = worse sleep apnoea).

I still doubt that a likely AHI level can be mathematically predicted based on the number of desats/hr with oxymetry (which was what someone else advised my friend - as in my original post)

Would you and anyone else be willing to share the numbers for their test AHI and their test desats/hr to test this theory? I had a test AHI of 58/hr, with desats of 28/hr (4% drop for 10 seconds).
......................................................................................................
All my opinions are only as an xPAP user trying to help other xPAP users.
No suggestions I may make should be taken as professional advice.
If you have medical concerns please consult a doctor


My current pressures: Auto-ASV. EPAP 10-13. PS 3-10

I will have to do some digging to come up with that test report but I will provide the data for you. I do not think that there is any numerical equivalency.

Best regards,

PaytonA
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#13
Oxygen desats are not necessarily directly correlated to AHI, but such an amount of desaturations is certainly enough to justify getting one into the sleep lab for a proper diagnosis.

I wore an oximeter a few weeks ago instead of my CPAP as my power was out and I wanted to see what would happen, and it came out quite similar to your friends; I have moderate sleep apnea diagnosed by somnography.
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