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What does this mean ?

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What does this mean ?

Postby bbheli » Sat Aug 22, 2009 11:02 am

What exactly does this mean?

Sa02 was 92.0% and the minimum Sa02 during NREM was 81.0% and during REM was 83.0%. The number of oxygen desaturations:;= 3%
was 216 for a desaturation index of 89.7. The patient spent 24.5 % ofNREM sleep with oxygen saturation levels below 90%, and 50.2
% of REM sleep with oxygen saturation levels below 90%.

What is the desaturation index ?

Thank You
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Postby CrohnieToo » Sat Aug 22, 2009 11:42 am

Desaturation means that your 02 levels in your bloodstream dropped.

Desaturation Index is the number of drops in 02 level per hour.

The number of times your blood 02 level drops below 90% and how long you remained below or were below 90% during sleep are a concern.

Almost 1/4 of the time you were in Non-REM sleep your 02 level was below 90% and 1/2 the time you were in REM sleep your 02 level was below 90%.

Since all of your time asleep is spent in either REM or Non-REM sleep that means that 75% of the time you were sleeping your 02 level was below 90%. NOT GOOD!
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Postby justplainbill » Sat Aug 22, 2009 11:47 am

I believe the meaning here is that you had 89.7 desaturation events during each hour of recorded sleep (on average). A desaturation event is defined in this study as a drop of 3% or more in your blood oxygen level.

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