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Predicting severity of sleep apnoea with just oximetry?
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Asjb Offline

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Post: #11
RE: Predicting severity of sleep apnoea with just oximetry?
(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).
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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
06-04-2016 11:33 AM
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PaytonA Offline
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Post: #12
RE: Predicting severity of sleep apnoea with just oximetry?
(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
06-04-2016 11:42 AM
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eviltim Offline

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Post: #13
RE: Predicting severity of sleep apnoea with just oximetry?
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.
06-04-2016 03:34 PM
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