OXIMETRY - Interfacing the CMS50 with your CPAP Therapy

4betterO2 · Post by **4betterO2** » Thu Feb 07, 2013 11:49 pm

cosmo wrote:
4betterO2 wrote: I was not using my machine that night.
Why weren't you using your machine?

because I had a nose/sinus congestion, so the machine was using pressures that were too strong to cope with. I read since then that in fact, congestion is indeed a contraindication for using the machine. I had just mentioned I was not using the machine so the graphs would not seem too alarming: it was not the topic of discussion, only a sideline clarification!

quietmorning · Post by **quietmorning** » Fri Feb 08, 2013 6:46 am

Wow, I wish there were an easier way to find posts than through search . . . like tags or maybe having posts like these pinned to the top. I did a search before I posted my most recent post and didn't find anything.

Is there any way to combine the post I posted yesterday with this post?

quietmorning · Post by **quietmorning** » Sun Feb 10, 2013 8:49 am

I recently purchased the CMS Model 50-E - and have worn it twice during the night. In a word, this thing hurts my finger - and I end up taking it off half way through the night. Is there anything that can help make this thing more comfortable to wear?

Thanks!

pbb · Post by **pbb** » Sun Feb 10, 2013 10:38 am

Jay -- how do you use a Zeo (sensor with a headband, right?) with a Mirage Quatro? p

Jay Aitchsee · Post by **Jay Aitchsee** » Sun Feb 10, 2013 11:01 am

pbb wrote:Jay -- how do you use a Zeo (sensor with a headband, right?) with a Mirage Quatro? p

I usually just wear it above the forehead piece. See this thread for some more ideas: viewtopic.php?f=1&t=86162&p=784796#p784796

4betterO2 · Post by **4betterO2** » Sun Feb 10, 2013 9:26 pm

quietmorning wrote:Wow, I wish there were an easier way to find posts than through search . . . like tags or maybe having posts like these pinned to the top.
Is there any way to combine the post I posted yesterday with this post?

Thanks, you're thinking like I do: for topics which are kind of technical, as opposed to personal support type, I really wish they could be made sticky, (like some threads which are now in the section at the top, above the forum area!). When you get stuck, it is really useful to have a place to turn to easily, to look at solutions! Unfortunately, the only way now, to keep a technical reference-type topic in easy view, is to post on it, or, to bump it . If the thread develops well and stays on focus technically, I hope to ask the people in charge of the forum to make it sticky.
I did not want to hijack your thread, but as you indicated a wish to merge your post with this one, I'll include quotes form your thread as soon as I can, so you could continue here if you want.
I had planned to glean and quote here also, some very good, random (sometimes off-topic) oximetry tips I read on the forum, just need some time to do that.

4betterO2 · Post by **4betterO2** » Sun Feb 10, 2013 9:35 pm

Interesting question by quietmorning - How to read oximeter graphs with SleepyHead

quietmorning wrote:Good morning (or evening, depending where you are),

I finally purchased an oximeter for night use. When I started my cpap therapy, I bought one that didn't have data ability which has proven to be useless.
I was able to upload it to sleepyhead this morning. . . and since I'm still on the learning curve, I'm not worried about the report being a clean one - which this obviously isn't.
I'm just wanting to understand the data I'm looking at, right now. I can figure the graph out . . .but the date, serial port, reset, Rescan Ports, SpO2, and Pulse - are just guessing what that does/means. I'm thinking that the SpO2 and Pulse are probably the lows for the recorded period? Is the reset button to get rid of incorrect data (like the first recorded period where my oxygen was way way low? Is that what that is for? If so, how do I do it. . .I played around with the date, but I didn't get very far.

Any help with those bottom stats/buttons would be much appreciated - thank you!

Replied to by Jedimark:

jedimark wrote:Oximetery is quite complicated at the moment, mainly because they use a serial protocol, and there is quite a bit of stuff to do to get that to work.

Most of the current code is designed for the CMS50D+

Now I've got a new CMS50F, I've got quite a bit of work to do to make them behave properly (has a different transfer protocol). Hopefully along the way I manage to find a way to simplify things a bit.

Unfortunately oximetry will always be tricky to get to sync with CPAP data.. It requires both devices (CPAP & Oximeter) starting to record at the same time, and then the following morning, having CPAP data imported first, then the oximetry, which will pick up the start time from the CPAP data.

Part of the UI confusion is there are three methods of importing data, 1) from data files saved by the Windows SPO2Review software, 2) Live Serial view (connected to a running computer with a USB cable all night), and 3) Serial Import, which reads from the devices internal memory.

The Date edit stuff is so the oximetry sessions can be manually adjusted. Maybe a little "advanced" checkbox that pops that stuff up will help.
The Reset button after the date is just to undo changes made to the date when editing re-opened records.
Best to avoid those Date settings if you are using the start-at-the-same-time sync method.

SpO2 & Pulse shows the maximum pulse and lowest SpO2 %, and the little "Save" disk button writes the open oximetry data to a SleepyHead session record.

The Serial port/Rescan ports is needed in case the device is plugged in after SleepyHead starts, as Serial ports don't automatically send a device connected signal. (I could in theory just keep scanning while there's no oximetry device detected, and the user is in Oximetry page, but the drop down is still needed for users who use multiple USB/Serial devices)

Suggestions on how to improve the User Interface in Oximetry are very welcome

xenablue · Post by **xenablue** » Sun Feb 10, 2013 10:11 pm

I have a CMS50E, and have never been able to get the software to work. I contacted CONTEC in China and they said that the software only works on a 32-bit operating system, and we use Windows7, 64-bit.

Anyone have any suggestions for making this work?

Despite the oximeter having bluetooth capabilities, my laptop does not.

Thanks for any suggestions.

Cheers,
xena

4betterO2 · Post by **4betterO2** » Mon Feb 11, 2013 1:44 pm

quietmorning wrote:I recently purchased the CMS Model 50-E - and have worn it twice during the night. In a word, this thing hurts my finger - and I end up taking it off half way through the night. Is there anything that can help make this thing more comfortable to wear?

Thanks!

I looked for your model online, saw it here:
http://www.clinicalguard.com/contec-med ... p-620.html
It seems to me it is like the CMS50D+ in appearance, so I guess it would exert the same type of pressure?
I have the CMS50D+. I use it on my 4th finger instead of the usual 3rd finger to make its grip gentler, have you tried this?
Or even the little finger?
You could set the alarm to go on if it gets dislodged. Also, I slip a cotton knitted glove past the thumb over my hand like a mitten to help prevent dislocation during sleep. Hope this helps!

quietmorning · Post by **quietmorning** » Mon Feb 11, 2013 1:55 pm

4betterO2 wrote:
quietmorning wrote:I recently purchased the CMS Model 50-E - and have worn it twice during the night. In a word, this thing hurts my finger - and I end up taking it off half way through the night. Is there anything that can help make this thing more comfortable to wear?

Thanks!
I looked for your model online, saw it here:
http://www.clinicalguard.com/contec-med ... p-620.html
It seems to me it is like the CMS50D+, renamed to avoid the confusion that was between the CMS50D and the CMS50D+?
I have the CMS50D+. I use it on my 4th finger instead of the usual 3rd finger to make its grip gentler, have you tried this?
Or even the little finger?
You could set the alarm to go on if it gets dislodged. Also, I slip a cotton knitted glove past the thumb over my hand like a mitten to help prevent dislocation during sleep. Hope this helps!

Thanks!!

I'll try it. I also purchased some mole skin to fiddle around with. . to see if that might help. I don't know if it will function or not if I put a layer on my finger before put it on. I'm going to try your suggestion, first though.

4betterO2 · Post by **4betterO2** » Mon Feb 11, 2013 1:58 pm

xenablue wrote:I have a CMS50E, and have never been able to get the software to work. I contacted CONTEC in China and they said that the software only works on a 32-bit operating system, and we use Windows7, 64-bit.
...
Despite the oximeter having bluetooth capabilities, my laptop does not.

You could try to download it here:
http://www.pulseoxstore.com/Manuals-Downloads.html

download this version, down the page:
SPO2 Review V1.0
Software to Download Pulse Oximeters on Windows 7 64 Bit SPO2 Review
Version V1.2

Hope it works! Some files are bad, so Save the file you download for any future re-install use..
In my experience an install file I downloaded was good, but trying to download it a few days later again, it had gotten corrupted on the site.
If you bought your oximeter online from China and got very scanty or missing instructions, I would recommend reading the first post on this thread (i.e., at top of page 1) , for first use data retrieval tips.

As for bluetooth, you could buy a USB bluetooth dongle to use on your laptop?
However, if your CMS50 came with a cable as it should, using that cable is always a much more secure option, both as regards privacy, and quality of data transmission.
Note that the USB cable sold with the CMS50 is a special, USB-UART cable, you cannot use a regular USB cable with it.

quietmorning · Post by **quietmorning** » Mon Feb 11, 2013 4:15 pm

For anyone with sore oximetry fingers, I purchased some Dr.Scholl Bunion Cushions - and placed one around my finger where the top edge (landscape view) of the pad reached the top joint in my finger. I turned on the oximeter - it reads just fine. I haven't slept with it, yet, but I'm thinking that this will go a long way toward the ouches during the night. When I took the pad off my finger, I just stuck it right back on to the paper from the package. Maybe it can be used more than once.

4betterO2 · Post by **4betterO2** » Mon Feb 11, 2013 5:02 pm

quietmorning wrote: I also purchased some mole skin to fiddle around with. . to see if that might help. I don't know if it will function or not if I put a layer on my finger before put it on.

AFAIK the CMS50 uses an infrared sensor, so it needs line of sight. I believe it is even discouraged to use nail polish.
I found your post on the pad after posting this: great! I guess the sensor reads the tip of the finger, which is free from the pad.
I would worry a bit though about overall increased pressure, expecially when using it overnight? I would refer to reduce to pressure , by using a smaller diameter finger...

quietmorning · Post by **quietmorning** » Mon Feb 11, 2013 5:11 pm

4betterO2 wrote:
quietmorning wrote: I also purchased some mole skin to fiddle around with. . to see if that might help. I don't know if it will function or not if I put a layer on my finger before put it on.
AFAIK the CMS50 uses an infrared sensor, so it needs line of sight. I believe it is even discouraged to use nail polish.
I found your post on the pad after posting this: great! I guess the sensor reads the tip of the finger, which is free from the pad.
I would worry a bit though about overall increased pressure, expecially when using it overnight? I would refer to reduce to pressure , by using a smaller diameter finger...

Tonight I'm going to try it on the smaller diameter finger and see how it goes. I'll have one of these pads on standby in case it becomes too uncomfortable. At least I know it will work with the pad before I go to snooze land.

The only difference (I think) between the E which I have and the D is that mine has a L-ion battery in it. I think that's about it.

HoseCrusher · Post by **HoseCrusher** » Mon Feb 11, 2013 5:29 pm

Make sure you check the results from various fingers. Most of the time there will be no difference but sometimes a little finger will read a little differently then a middle or index finger. You can check this while you are awake and not active. Just put the unit on your various fingers and compare the readings.

You can also use your toes, but I find that more uncomfortable than my fingers...

OXIMETRY - Interfacing the CMS50 with your CPAP Therapy

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Re: OXIMETRY - Interfacing the CMS50 with your CPAP Therapy