Que

My comment was regarding it's sleep function. The criticism is that it can't tell if you are asleep or awake properly solely through body movement. Some people are awake but not moving.

My understanding is that the Wrist activity trackers (iWatch, Jawbone, Garmin, Fitbit, Basis, Misfit, Withings) are useless. Was told so by the Stanford sleep tech. They conducted their own research.

No problem Dan, I am planning to see him this week and will ask him that question.

Thanks for the help and frame of reference.

Que

Thanks Dan! I'm actually going in for another sleep study this week for a clinical trial at Stanford. So, it should be an interesting week. I also have an appointment with a sleep dentist. Hopefully making some progress on all of this.

Regarding the TcCO2, my report says:

There was a TcCO2 reading at 57 torrs with increase in sleep. Can you please tell me what that means. It seems like it may be using a different scale than you mention.

All the best, Que

I went ahead and bought the SleepRate from Stanford. After I give it a try I will let everyone know how it went.

Thanks

Hi Dan,

Ok, that is making sense. Your explanations are really helpful especially since it is hard to get much time with my sleep medicine doctor. Of course, I understand it is best for you to provide general advice instead of specific to my condition advice. I have a few more general questions if you don't mind.

Can you please provide the ranges for normal to abnormal TcCO2 and PLM index.

Thanks! Que

Hello,

I would like to find the best sleep tracker home device possible. I understand that they will not match the sleep lab polysomnography, but I think that there are some things which a patient can do at home. My goal is to measure how well my sleep therapy is working. Does anyone have a recommendation?

From my research these seem to be the options:

1) Pulse oximetry (Contec CMS50) with Sleepyhead software.

2) Itamar-Medical WatchPAT. Rx Required and very expensive. Used for at home sleep studies.

3) Actiwatch from Phillips. Rx Required.

4) Wrist activity trackers (iWatch, Jawbone, Garmin, Fitbit, Basis, Misfit, Withings)

5) Contact-less activity trackers (Withings Aura, Beddit, and Luna)

6) SleepRate from Stanford

7) Smart phone apps (Sleepbot, SleepCycle, SnoreLab)

8) Smart CPAP machines like Philips Respironics tracking software

Thanks, Que

Hi Dan,

Thank you again for your help. I really appreciate it. A couple more questions if you don't mind.

1) Can you please explain why I would have a high number of hypopnea events but a lower index number.

• NREM Supine Events: 39 and Index 6.1

• NREM Non-Supine Events: 16 and Index 2.5

• REM Supine Events: 44 and Index 6.9

• REM Non-Supine Events: 0 and Index 0

2) Are the hypopnea events that are not contributing to my index number troublesome/detrimental to my well-being?

All the best, Que

Thanks Dan,

I appreciate your advice. I have a few more questions:

• Can you please tell me what is the definition of an Hypopnea Event is? In my case I had 33 Supine and 16 Non-Supine.

• When it's stated that patients with OSA have an increased risk for mortality, stroke, Atrial Fibrillation, and cancer, how is that measured? Does a patient need to have a certain AHI score or similar measurement to have that risk?

Thank you, Que

BTW: Didgeridoo is coming along :)

Hi Dan,

Thanks for the explanation of REM sleep. It's really helpful. I'm still trying to understand the significance of my study results. It seems that I have a high number of hypopnea events but I am not desaturating significantly but I aroused. The question I have is how troublesome is that?

--

HYPOPNEA EVENTS: NREM

Number of Hypopnea Events Supine & Non-Supine: Total 55, w/AR: 46, w/Desat:2, w/AR+Desat: 7

NREM Index: 8.7

--

HYPOPNEA EVENTS: REM

Number of Hypopnea Events Supine & Non-Supine: Total: 44, w/AR: 39, w/Desat:4, w/AR+Desat: 1

REM Index: 6.9

--

Thanks, Que