Test Results..FINALLY!

Sleep Architecture: Sleep onset latency: 19.0 minutes (Normal < 10); REM onset latency: 128.5 minutes (Normal 80-120); Sleep efficiency: 87.5% (Normal > 85%); Arousal Index: 22.5/hr. Sleep architecture was fragmented. Stage 1 at 8.4% (Normal 3-5%), Stage 2 at 81.9% (Normal 50-55%), Delta sleep at 0% (Normal 25%), Stage REM at 9.8% (Normal 25%), WASO: 17.0 minutes (Normal < 30 minutes). Total sleep time was 251.0 minutes.

Split-Night Data:CPAP pressure range was 5 cm/H2O to 16 cm/H2O. The apnea/hypopnea index at optimal pressure was 0.0/hr (14 cm/H2O). The overall apnea/hypopnea index was 42 with low O2 desat of 87% prior to CPAP. ECG leads showed no cardiac dysrhythmias. Oxygen saturation baseline was 95% with a nadir of 89%. Snoring was eliminated. PLM index was 0. PLM's with arousals were 0/hr. There were 45 spontaneous arousals.

Physician Impression: Severe Obstructive Sleep Apnea. Sleep apnea was effectively treated with a CPAP pressure of 14 cmH2O. No Periodic Limb Movements of Sleep. Mild Oxygen desaturation of 87%. Oxygen desaturation was effectively treated with CPAP. Sleep architecture was fragmented due to OSA. Sleep architecture improved with nasal CPAP. No cardiac Dysrhythmias.

SandyDKY wrote:I FINALLY got the results from my study in the mail today! Only two months since the test. Maybe you all can help me understand some of it.

My guesses/comments shown in BLUE:

Sleep Architecture:
Sleep onset latency: 19.0 minutes (Normal < 10);
REM onset latency: 128.5 minutes (Normal 80-120);
latency is "delay", yours would indicate some insomnia then extended period in reaching REM sleep from sleep onset.

Sleep efficiency: 87.5% (Normal > 85%);
I think this percentage is wrong, you had NO Stage 3/4 sleep, REM was low.

Arousal Index: 22.5/hr. (items that interrupt your sleep Architecture above/below, such as preventing you from reaching Deep sleep or kicking you from REM sleep back to Stage2.

Sleep architecture was fragmented. Means your sleep quality was fragmented most likely due to arousals seen below in the various
stages.

Stage 1 at 8.4% (Normal 3-5%),
Lightest Stage of sleep from Wake to Sleep.

Stage 2 at 81.9% (Normal 50-55%),

Your Stage2 is higher because you spend less time in other stages of non-REM & REM sleep below. This is sort of where you "land" when an arousal kicks you out of say Deep sleep or REM, you land or bounce there so the value is much higher.

Delta sleep at 0% (Normal 25%),
Stage(s) 3&4 together, a.k.a Deep sleep or where it is thought you get the most restorative effects from sleep. You are getting 0% NONE. Feel tired?

Stage REM at 9.8% (Normal 25%), Where your eyes move rapidly and where it is thought you do most of your dreaming. You are low in REM, REM decreases as we get older so that can have an impact on your score, being low it says something is interrupting your sleep either getting to REM or once you get there, something (like an arousal) kicks you out of REM most likely back to Stage2 or even Stage 1:.

Theory is: Eliminate the arousals, you will spend more time in Deep and REM sleep, feel more rested during the day.

WASO: 17.0 minutes (Normal < 30 minutes).
Means Wakefulness After Sleep Onset (time you were seen awake after you went to sleep, you may not even know of these wake times). It means if you add up all the time you were brought back to a "Wake" state during sleep it added up to 17 minutes.

Total sleep time was 251.0 minutes. Total time spent sleeping.

Split-Night Data: (results while on the CPAP machine)

CPAP pressure range was 5 cm/H2O to 16 cm/H2O.

CPAP pressure they used during your study, from a low of 5cm to a high of 16cm.

The apnea/hypopnea index at optimal pressure was 0.0/hr (14 cm/H2O).

Your CPAP pressure is 14.0cm

The overall apnea/hypopnea index was 42 with low O2 desat of 87% prior to CPAP.
AHI=42, if you slept avg. 7 hours per night, that is 7x42 or 294 times per night you were awakened (one way to look at it). AHI=>30 is in the Severe range. When you are awake your oxygen level is 95%, due to the OSA events it dropped to 87%. Anything <89% is considered medically significant.

Status of Heart:
ECG leads showed no cardiac dysrhythmias.
No heart related problems seen during study.


Blood Oxygen levels seen:
Oxygen saturation baseline was 95% (when you were awake) with a nadir of 87% (lowest point seen during your study).

Snoring Status:
Snoring was eliminated.

Periodic Limb Movements:
PLM index was 0.
PLM's with arousals were 0/hr.

This means while on cpap you did not have any limb movements that contributed to any kind of an arousal.

There were 45 spontaneous arousals.

Physician Impression:
BEFORE: Severe Obstructive Sleep Apnea.
AFTER: Sleep apnea was effectively treated with a CPAP pressure of 14 cmH2O.

BEFORE/AFTER: No Periodic Limb Movements of Sleep.
BEFORE: Mild Oxygen desaturation of 87%.
AFTER: Oxygen desaturation was effectively treated with CPAP.
most likely means your SAO2 level remained higher than 89% while on
cpap.

BEFORE: Sleep architecture was fragmented due to OSA.
AFTER: Sleep architecture improved with nasal CPAP.
How much so?

BEFORE/AFTER: No cardiac Dysrhythmias.

Don't tell me, show me, if Sleep architecture remained "fragmented" or improved on nasal CPAP please show me the data. Are we to assume Sleep Architecture returned to within "Normal" levels above and you are now getting Deep Sleep?

What was the SAO2 nadir on CPAP?