In May I used an ApneaLink for a screen, which got me a sleep study in July. The results from the screen were an AHI of 8 with a lowest desaturation of 79%. BUT, the ApneaLink breaks out the desats:
#desaturations: 100
- 89% < sat ≦ 90% -- 12min
88% < sat ≦ 89% -- 3min
85% < sat ≦ 88% -- 2min
80% < sat ≦ 85% -- 1min
79% < sat ≦ 80% -- less than 30 seconds...
In the full sleep study, the final interpretation is "The findings indicate moderately severe obstructive sleep apnea with associated hypoxemia and sleep disruption (minimum SpO2 80%)."
There are a bunch of things which I find kind of surprising in the study. This started out as a question of narcolepsy, because my dad sleeps at all sorts of inappropriate times (at the dinner table, in the middle of social events), and also because I dream pretty much constantly when I sleep -- if I fall asleep at my desk for a minute or two is when I have pretty strange dreams. But the sleep study pretty much clears up the narcolepsy worry.
Total Recording Time: 462 min
Total Sleep Time: 357 min
Sleep Latency: 40.5 min
REM Latency: 116 min
Sleep Efficiency: 84.7%
Wake After Sleep Onset: 64 min
% of Total Recording Time (% of Total Sleep Time)
Wake Time: 22.7% (0%)
N1: 1.4% (1.8%)
N2: 52.2% (67.5%)
N3: 9.8% (12.7%)
REM: 13.9% (18.0%)
That looks like I dream outside of REM sleep, and that if anything I'm a little low on total REM sleep and a little slow getting there. The N3 looks like it's about 2/3 what it's supposed to be, which could explain why I wake up feeling like I was running a marathon while I was sleeping and got hit by a bus at the finish line.
The report also says that my snoring is "FREQUENT MODERATE TO LOUD" which surprises my husband, since he says I normally don't snore. EKG showed my heart rate was 85/102/73 while awake and 79/91/71 while asleep (Avg/Max/Min). My whole life I have had a fast resting heart rate combined with low blood pressure, but in the last year my blood pressure has gone up to normal and I've started on a low dose of beta blocker that has nudged it down. So, yeah, it's high, but lower than it was! The "EEG & Sleep Analysis:" was "Sleep was moderately fragmented" Leg movement analysis: "PLMS INDEX 6.7"
So now to the breathing...
Total events: 91
AHI: 15
AHI during REM: 45
AHI during NREM: 9
Hypopneas -- NREM: 34, REM: 43
Obstructive Apneas -- NREM: 9, REM: 5
No Central or Mixed Apneas
Position: #Events/AHI
Prone: 0/0, Supine: 23/19, Side: 68/14
One other piece of data -- I have Hashimoto's and an enlarged thyroid. When I lie on my left side (right lobe of thyroid -- the larger one -- is on top), I occasionally hear a little "squeak" or short whistle at the very end of a breath.
So, now to my questions... My PA has ordered a CPAP machine for me, but I haven't seen the prescription, so I don't know exactly what she has ordered. I have talked to two DME's in the town that I work in that are in network. One says that they carry Respironics machines, while the other says both Respironics and ResMed. The 2nd DME told me that their ResMed machines are "S9 VPAP Adapt". The machines come in a overwhelming array of features and price points. From reading here, the message I get is that I need a machine that is fully data capable and in a form that I can read the data, but on the other hand my results show no sign of central apneas and moderately severe obstructive apnea so I don't need necessarily a "Cadillac" machine that someone else might need. One "blunt force" way to tell the difference between machines is to look them up in the cpap.com catalog and any machine which is too cheap I'm assuming is, well, cheap. But even that's pretty approximate -- my nightmare is to end up with a machine that's expensive because it has features on it that I don't need, while still not having the features that I do need. Because I don't know what I need!
Next question: When I go to the DME and pick up the machine, are they going to show me how to use it? Give me a brochure? Send me to a website? I know I sleep with my mouth open, and that they make masks for that -- is the DME supposed to provide the expertise to tell me what mask to use and to fit it to my face and to teach me how to get it on right? If not them, then who is supposed to teach me these things?
What about pillows? This morning I noticed that when I sleep it's on my side, but my face is turned a bit down, so the whole side of my cheek is against the pillow. Anybody else have this problem and know how to solve it?
Thanks in advance for any tips, pointers, information, etc. This is all really overwhelming -- I started out thinking that I might have narcolepsy, and the ApneaLink screening was free so I took it, and was totally not expecting to show up with apnea/hypopnea.