SPO7500 ?'s

mindy · Post by **mindy** » Tue Jun 10, 2008 2:50 pm

Jerry,

If you have to push button with a ballpoint pen, then it sounds to me like you might have an older model. I seem to recall Slinky mentioning that issue and that the newer models have better buttons. You might want to PM her to find out. Wouldn't that be just like a certain vendor.....

Mindy

ww · Post by ww » Tue Jun 10, 2008 2:58 pm

Sorry they didn't find anything wrong. I simply use my fingernail to press the button to get it to go to communications mode. Batteries seem to be key to the proper operation. Knowing how those buttons work (carbon on rubber pressed across 2 points on pc board, ball point pen would not be a recommended way to push them. I have always used the 2 second readings, but 1 second should get most of the night with twice the resolution. A high magnetic field "might" influence the readings and look like motion. Try wearing it around the house and see if it seems to maintain the communication with the wrist electronics. Try it in another bedroom one night and see if that makes a difference. Keep posting your results and maybe someone will figure out why your unit behaves so much different than it should.

Be certain to start Vitabase and create a customer with a last name and sequence number and number of seconds per reading, let it erase all the previous data and then set the oximeter up to record data for a new night. The bars down the right hand side represent 20% full for each bar and 5 bars is completely full.

ww · Post by ww » Tue Jun 10, 2008 8:18 pm

Actually mine says made in Israel. Others have reported good customer service, although I have not needed to find out.

mindy · Post by **mindy** » Wed Jun 11, 2008 5:29 am

SPO Medical is based in Israel. Some of us have had good customer service but Jerry clearly has some kind of problem ....

m

6PtStar · Post by **6PtStar** » Wed Jun 11, 2008 9:48 am

Well, I give up! I guess I just was not meant to be. I tried it again last night. it recorded for the first 45 min and then went crazy with errors for 1 hour 23.9 min. After that it settled down and recorded the rest of the night like it should. But the error time is skewing the results so that it is of no value. Apparently it is recording desats and pulse drop off during the error time. It is so disapointing when you go through 8 hours and find out you have nothing to show for it.

I don't know what else to try. I have tried it every way on the finger I can think of. I still get the weak signal symbol on the display blinking on and off. All you can do is to put it on your finger, try differen fingers and different positions. Darn I really need this data because I really want to discontinue my O2 and I fear that I may have bradycardia. I thought about bidding on the two used respronics/nolin units on cpapauction but apparently the program to read them runs around $1000 and my budget won't allow that. My doc wants to put a holter unit on me for 24 hours but that won't help me get rid of the O2

Thanks for everyones help.

Jerry

mindy · Post by **mindy** » Wed Jun 11, 2008 9:56 am

Jerry,

So sorry to hear of your difficulties! Is it worth trying SPO support *one* more time, describing exactly what happened and asking them what could be causing the problem? It doesn't sound like whatever test they ran was adequate to find the problem.

Best,
Mindy

DreamStalker · Post by **DreamStalker** » Wed Jun 11, 2008 10:17 am

6PtStar wrote:To all you folks that got your SPO7500 a while back, I need help. I got mine from Med1 but have just now had time to figure it out and try to make it work. I have had a couple of folks try to help me understand what I am reading on the reports, THANKS for helping.

It seems I am having a problem getting the sensor to keep reading. The data I got this morning said it recorded 1hr13min out of 5hrs57min. What in the world am I doing wrong. I put the rubber cuff on my finger and it is mashing my finger so hard it woke me up twice. I even put a piece of tape on it so I know it is not moving or falling off my finger. The graph looked like a deep wash board with nothing but error across the bottom. Does movement totally wipe out any readings? It does say move in several places.

So far I have not gotten enough data to tell anything. The first night I did get some data with it with only about 45 min of wash board and error, but I was tring to get a base line so it was with my O2 running. Last night I got almost nothing.

Anyone have any ideas?

Jerry

When I first used mine it hurt my finger too. I later discovered that I had it on upside-down. Once I put it on correctly, it did not hurt anymore.

If you look closely on the rubber cuff, you will note that one side has a fingernail icon on it. That side needs to face up or coincide with the side of your finger with you fingernail and the wire coming out of the cuff is on the bottom. Read your PDF manual and make sure you are putting the cuff on your finger correctly.

Maybe that’s why you can’t get good readings?

EDIT: Just noticed this was already discussed on page one. Maybe you need to have your doc check you out more closely and see if there is something real causing the data drops.

6PtStar · Post by **6PtStar** » Wed Jun 11, 2008 1:16 pm

I have read and reread the instructions. I am not trying to wear it upside down. If I put it on upside down it won't read at all. I have tried five different fingers and multiple positions on each finger and both hands. I don't understand how it can work, cut off and then start working again with out doing anything. I can put it on and sitting at my desk with my hand on the desk not moving I can watch it cut off display the five blank lines for a while then cut back on with numbers again.

This is what I got last night. The area in the circles and the error report is what concerns me. If I look at the rest of the red O2 line and the black pulse line it looks like it is stable. What is happening within the circles. I dont see any desats and even the lowest pulse rate seems to be in the circles only. It seems to be what is skewing the reported numbers. I have an appointment with my doc on the 30th and I was hoping to have some good data to talk to him but I do not think this will do.

I really don't know what I could be doing wrong since the unit has been checked and is working properly but I also do not know of anything else to try. I guess it is just me.

Jerry

Pd · Post by Pd » Fri Jun 13, 2008 1:34 am

Just a few notes and observations. It looks like you move alot throughout the night, or maybe you just wiggle your fingers? Either way, as I understand it, the software does not use the error data when doing its calculations, it just disregards that garbage. So, even with all the movement artifact you still have some data.

I would guess that if the rubber cuff was rotating on your finger, or you were making and releasing a fist, you might get odd movement artifacts. But, you might also consider the nature of the beast in question, and research the actual limits of this type of oximetry. My vague impression is that blood composition and even metabolic factors can greatly affect this wavelengh dependant measurement. Serum, platlet, and blood iron, sugar, CO2, drugs, and other factors might come into play that are causing your data problems. As I understand, the unit sends out one color light and reads the amount of a diffrent color that is reflected from the oxigenated blood cells, so anything inbetween that might shift the color could be a problem. I think other units might use transmission instead of reflectance as the source of their data, but I would think the metabolic issues would be the same.

Good luck, and work with the little less than ideal data you have until you find the solution.

6PtStar · Post by **6PtStar** » Fri Jun 13, 2008 8:34 am

PD, thanks for the information, that helps a bit and you sound like you know what you are talking about. When I tried to read the graph I could not find some of the low readings so I made the assumption that they were in the error time. My wife says I don't move that much but I had no idea these things were that sensitive to movement. Finger movement may be the movement problem. I really think the whole problem is in the rubber thimble. I think it is not a very good design. I have worn the clip on type in the hospital and had no problem with it reading, only problem is snaging it and pulling it off. I wish there was a way to change the rubber thimble to a clip type. I thought about cutting the little sensor out of the cuff and taping it to my finger to see if that would work but I have not gotten that brave yet.

Jerry

Gerald · Post by **Gerald** » Fri Jun 13, 2008 10:21 am

Jerry....

You might try stabilizing the sensor-cup on the end of your finger...with a Band-Aid.

Anything that'll keep the sensor from moving on your finger will help a lot.

As I see it, the rubber cup....and its sensitivity to movement....is a trade-off for the "clothes-pin snapping-turtle" clamp on a hospital-type sensor.

The cup is so much more comfortable than the clip...

Gerald

6PtStar · Post by **6PtStar** » Fri Jun 13, 2008 10:28 am

Gerald, I have tried tape. I even used "Duct Tape" one night. Put a sock over my hand so the rubber would not snag the covers, again no luck. In the morning when I take it off it feels like it is glued to my finger. Still get errors and movement notations. All I can figure is that it does not fit me correctly.

Jerry

Pirateghost · Post by **Pirateghost** » Fri Jun 13, 2008 2:54 pm

Me suspects something is very fishy with SPO company. Fancy website and all to make you think they are a global company but.....

I've only been able to talk to one person and that person is not very smart. I've heard all the claims of "out techs in Israel" but have yet to get a response from this company to my problem.

I even threatened to turn them into web BBB and no response. Glad I got this unit on the cheap but I don't expect any support from SPO.

Pd · Post by Pd » Sat Jun 14, 2008 3:09 am

One suggestion that might help clear things up a bit.

Have you tried to get data from someone else using your oximeter? If your meter is working correctly but not reading your data due to some blood, body, or movement problem then it is unlikily that someone else will have the same problem.

So, try it on someone else and see if you can record a full nights worth of data. If you can then you know its you, if not, well call SPO and let them know.

Good luck.

6PtStar · Post by **6PtStar** » Sun Jun 15, 2008 9:27 am

I asked my wife to wear it and she refused so I guess I am on my own. Before i delegate it to my drawer of cpap thing that did not work can anyone answer a couple of questions. What causes "Move" errors. Is it movemrnt of the hand/finger, movement of the thimble or movement of the body. Maybe all the above? What causes the "Error" notation? It is hard to work on something when you don't know what is causing it.

I had a fairly restful night, did not turn over for almost 6 hours and still got 5 move errors. Could I be moving my fingers. Would taping my finger to a tonge depressor so I can't bend it help. Any one tried this?

I may have found my problem. In looking at the specifications it says that it measures pulse rate fron 250 bpm to 40 bpm. Since my pulse rate sometimes falls below 40 maybe I am falling outside it's ability to measure anything.

Jerry

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