Finally got my sleep study and titration results.

Finally got over to the hospital and requested my results. Any help with understanding them is appreciated. They are both one page reports.

Original study....
Slept 416 of 508 minutes yielding a sleep efficiency of 82%.
Stage 1 = 4.6%
Stage 2 = 64.7%
Stage delta = 6.7%
REM = 24%
Overall AHI of 38
REM AHI of 55.8
264 respiritory events, with no centrals.
The longest event was 39.7
Lowest documented O2 sat = 83.8%
38 limb movement of which 1 was associated with an arousal.
Some bradycardia (slow heart beat).
Severe intermittent snoring.

C-PAP titration study...
Slept 375 of 475 minutes yielding a sleep efficency of 79%.
Stage 1 = 13.7 %
Stage 2 = 53.7%
Stage delta = 0%
REM = 12.8%
At a titrated pressure of 16 cm of water, the AHI was zero with zero respiritory events.
Some problems at a pressure of 16 which a c-flex of 1 fixed.
No significant desaturations.
No snoring.
19 limb movements of which 3 were associated with arousals.

The first thing that looks wierd to me is the sleep stage percentages. On the first test they added up to 100% (given rounding errors). On the titration they add up to 80.2% (79% with rounding). Seems pretty close to my sleep efficiency. Why two different standards? Process? Adjusting the second set to the same scale as the first set...
Stage 1 would be 17.1%
Stage 2 would be 67.1%
Stage delta still 0%
REM would be 16%
The comparison is still strange to me. Maybe the wierdness of the sensors and the mask kept me out of REM more?

Is the REM AHI being 47% higher than overall AHI pretty normal?
Is the 83.8% O2 sat mild moderate or severe?
39.7 seconds seems like a REALLY long time.
Lastly. Supposedly I have an AHI of zero with a pressure of 16 and a c-flex of 1. Why is my AHI so much higher at home? I know there are lots of reasons, but still. My lowest AHI has been 3.7 with a leak rate that was essentially flat.

Thanks for any help!

CH

You are ahead of me. You got your sleep study not that I have the slightest idea what it means. All I got was a letter from my doctor telling me I have a fairly severe case of sleep apnea with an average of 47 episodes per hour where I stop breathing or breathe more shallowly than I should for periods, on the average, of 18 seconds at a time. I have made requests for a copy of my report but I have not received it.

I have been using a CPAP since September 26, 2008. I use it at lease 8 hours every evening and I have only had one night when my AHI was less than 5. I have never seem my "sleep doctor" and will not until late January 2009.

With luck, maybe your "sleep doctor" will explain your r eport to you. I think you have a right to have it explained to you by your doctor.

congahands wrote:Finally got over to the hospital and requested my results. Any help with understanding them is appreciated. They are both one page reports.Is the REM AHI being 47% higher than overall AHI pretty normal?
Is the 83.8% O2 sat mild moderate or severe?
39.7 seconds seems like a REALLY long time.
Thanks for any help! CH

I was brousing through other posts, and this answer caught my eye, by Snoredog on Tue Oct 21, 2008 1:54 pm .
I think it might help you get some answers through his enlisted definitions and explanations. I coudn't have said it any better!
D.

DEFINITIONS:
APNEA = cessation of airflow for 10 seconds or greater.
HYPOPNEA =>50% decrease in airflow for 10 seconds or greater with a decrease in oxygen saturation of >3%.
APNEA/HYPOPNEA INDEX (AHI) = apnea plus (+) HYPOPNEA/hour of sleep.
RESPIRATORY AROUSAL INDEX (RAI) = AHI +snoring related EEG arousals/hour of sleep.
AHI/RAI** Scale =<5 events /hour = (none); 5-15 events/hour = (mild); 15-30 events/hour = (moderate); >30 events/hour = (severe).
Respiratory related sleep fragmentation: Sleep arousals due to respiratory events or snoring.
Desaturation = Drop in O2 oximetry distribution saturation by 3% below average saturation.
SaO2 scale: >89%=(none); 85-89%=(mild);80-84%=(moderate); <80% (severe).
EPWORTH SLEEPINESS SCALE =<10=(does not indicate EDS (Excessive Daytime Somnolence));10-15=(indicates daytime somnolence-not excessive);>16 (indicates EDS).
RESPIRATORY EFFORT RELATED AROUSALS (RERAs)=Sleep Arousals due to respiratory events characterized by pressure flow limitations in the airflow indicator channel without significant O2 desaturations.
StageIII and StageIV are combined and referred to as Deep Sleep.
Sleep Efficiency = Normal is >80%
As established by AASM/ABSM 1999.

Normal Sleep Architecture:
Stage1: 5%
Stage2: 50%
Stage3: 10%
Stage4: 10%
Stage REM: 25%

Stage3&4, REM decrease as we age.

2. Nocturnal desaturation: (minimum SaO2 86%: range 94-86%)

Let me put this into perspective; if you showed up at the ER and they checked you with a pulse oximeter and your level was 86%, they would probably put you on oxygen. Have an apnea, no airflow, have a long enough apnea and your body doesn't get any oxygen, so the levels drop in your blood, same blood that goes to your brain, your heart and other vital organs. Deprive them of oxygen they need to survive and cells that make up their structure begin to die in as little as 10 seconds deprived of oxygenated blood. This process of cell death/necrosis is called inflammation, have it for years on end unchecked cholesterol putty like plague begins coating the lining of your arterial system as a temporary repair, later platelets form at the damaged site for a more permanent repair, they form a thrombus (cluster of platelets or clot), when a chunk of that thrombus breaks of into a thrombi (clot) it can travel to your brain, to your heart and where it lands it may completely block flow. What ever is on the end of that artery begins to die, if its your brain you have a stroke, if its your heart you may have a heart attack, which just depends on roll of the dice. When this plague hardens your arteries (aka hardening of the arteries or atherosclerosis) can no longer dilate to increase blood flow, when that happens you have hypertension.
So the whole idea behind this cpap thing is to keep your airway open at night so you get the oxygen you need to prevent hypoxia. Do that early enough in your life and you can avoid early death from stroke or heart attack.
_____________________________________________________________________________

Hope this helps you out. Let us know how things go for you!
D.

[Dude that is not good. You should be talking to a surgeon and seeing about getting the work done. Mine was similar to that,You are playing russian roulette with your life. quote="conga hands"]Finally got over to the hospital and requested my results. Any help with understanding them is appreciated. They are both one page reports.

Original study....
Slept 416 of 508 minutes yielding a sleep efficiency of 82%.
Stage 1 = 4.6%
Stage 2 = 64.7%
Stage delta = 6.7%
REM = 24%
Overall AHI of 38
REM AHI of 55.8
264 respiratory events, with no centrals.
The longest event was 39.7
Lowest documented O2 sat = 83.8%
38 limb movement of which 1 was associated with an arousal.
Some bradycardia (slow heart beat).
Severe intermittent snoring.

C-PAP titration study...
Slept 375 of 475 minutes yielding a sleep efficiency of 79%.
Stage 1 = 13.7 %
Stage 2 = 53.7%
Stage delta = 0%
REM = 12.8%
At a titrated pressure of 16 cm of water, the AHI was zero with zero respiratory events.
Some problems at a pressure of 16 which a c-flex of 1 fixed.
No significant desaturations.
No snoring.
19 limb movements of which 3 were associated with arousals.

The first thing that looks weird to me is the sleep stage percentages. On the first test they added up to 100% (given rounding errors). On the titration they add up to 80.2% (79% with rounding). Seems pretty close to my sleep efficiency. Why two different standards? Process? Adjusting the second set to the same scale as the first set...
Stage 1 would be 17.1%
Stage 2 would be 67.1%
Stage delta still 0%
REM would be 16%
The comparison is still strange to me. Maybe the weirdness of the sensors and the mask kept me out of REM more?

Is the REM AHI being 47% higher than overall AHI pretty normal?
Is the 83.8% O2 sat mild moderate or severe?
39.7 seconds seems like a REALLY long time.
Lastly. Supposedly I have an AHI of zero with a pressure of 16 and a c-flex of 1. Why is my AHI so much higher at home? I know there are lots of reasons, but still. My lowest AHI has been 3.7 with a leak rate that was essentially flat.

Thanks for any help!

CH[/quote]

nate, Why do I need a surgeon if the CPAP titration showed zero apneas at 16 cm H2O pressure?

I've been on CPAP for little over two weeks now, and I seem to be feeling a lot better. It just looks like there is room for improvement because my apneas are running between 3.6 and 12.