Blood Oxygen Monitor

[dave1968]

I bought a o2 monitor from Ebay, a UK seller for £49.99, It comes with a lead and software to download the results.

http://www.ebay.co.uk/itm/Fingertip-Pulse-SpO2-Oximeter-Blood-Oxygen-Monitor-PLUS-/170702132699?pt=UK_Sporting_Goods_Activity_Monitoring_MJ&hash=item27bea3d5db

[ukjoel]

I bought a o2 monitor from Ebay, a UK seller for £49.99, It comes with a lead and software to download the results.

http://www.ebay.co.uk/itm/Fingertip-...item27bea3d5db

UK Sellers contact details showing up as
YANBIN ZHANG
Xinzhaoyayuan, Songzhuang Road. Fengtai District
100094 BEIJING, 北京
中國


Nothing wrong with this but worth being aware of.

[Sparticus]

You can get these off ebay for around £20 from UK sellers just need to hunt for them

[proterra]

You can get these off ebay for around £20 from UK sellers just need to hunt for them

Not with data logging I reckon! I stand to be corrected if you can point me in the right direction

[Sparticus]

Not with data logging I reckon! I stand to be corrected if you can point me in the right direction

http://www.ebay.co.uk/itm/Fingertip-Pulse-Oximeter-SPO2-USB-SOFTWARE-24H-RECORDE-/260814539289?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item3cb9c20a19

well ok I was £6 over lol £26.40 free shipping

[Barely Awake]

The finger units are certainly cheaper and far more affordable in comparison to what I purchased a while back, which is a remote unit with a lead and probe. Others are wrist worn with a lead and probe. My only query would be whether I could manage to keep something as bulky as an all in one finger unit on a finger overnight. After a few months I found the probe I had bought uncomfortable night after night on the same finger, so started to swap fingers and it either dug in or fell off when moved back to a smaller finger. I am now looking for a spare probe for my fatter fingers.

[proterra]

Pulse Ox probes

Having sold Pulse Ox for several years I would liker to say that with some units you can get a variety of disposable probes that fit on the ear lobe, bridge of nose etc so you dont have to stick with the standard finger one.
Whether they are comp[atable with the cheap units I dont know . But the main manufacturer is Nellcor. who also make good SPO2 monitors though not cheap as they used in hospitals etc. So check to see if youre Pulseox is compatable with Nellcor probes, a lot are.
As long as the led and the sensor can look through tissue it will work.

[Tigers Fan]

A finger ring of cable-tie velcro (sticks to the back of itself) will help keep the sensor on your finger all night.

TF

[komadori]

I'm another Oximeter newby

After a couple of years on NHS CPAP, which "sort of" works I want to check where I am, and then assess effects of variations, so have just purchased a CMS50F oximeter via ebay for around £60 (from topstarseller10 in Hong Kong) arrived in under 2 weeks, seems fine.

Tonight I will start monitoring following advice on this thread. Hopefully will have some useful data in a week or so.

(PS for anyone else buying, I got much better exchange rate from my Nationwide Credit Card than rate offered by Paypal, within Paypal select original € currency.)

[Barely Awake]

Having sold Pulse Ox for several years I would liker to say that with some units you can get a variety of disposable probes that fit on the ear lobe, bridge of nose etc so you dont have to stick with the standard finger one.
Whether they are comp[atable with the cheap units I dont know . But the main manufacturer is Nellcor. who also make good SPO2 monitors though not cheap as they used in hospitals etc. So check to see if youre Pulseox is compatable with Nellcor probes, a lot are.
As long as the led and the sensor can look through tissue it will work.

Thanks for that. Unless you are in the USA it seems quite difficult to find if Nellcor sensors are compatible with Comtec CMS60C, or where you buy them. I shall keep trying to find where I can find out.

[Sparticus]

£17.40

This is the cheapest one Ive seen so far

http://www.ebay.co.uk/itm/NEW-USB-Pulse-Oximeter-SPO2-Monitor-Free-Software-/160607108101?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item2564edfc05

[Sparticus]

Screening Sleep Apnea with Pulse Oximeters

Pulse oximetry, along with a clinical score, is an effective screening tool for sleep apnea. This approach, though not as accurate as polysomnography, is much simpler, low cost and can be done at home by the patient.
Polysomnography is performed in a sleep laboratory and a patient is required to stay overnight. The test monitors various physiological factors during sleep, including brain electrical activity, eye and jaw muscle movement, leg muscle movement, airflow, respiratory effort, EKG, and oxygen saturation. These tests are to determine the frequency of apneas during sleep and the body's reaction to the sleep apnea.
Apnea-hypopnea index, or AHI, is an index used to assess the severity of sleep apnea based on the total number of complete cessations (apnea) and partial obstructions (hypopnea) of breathing occurring per hour of sleep. These pauses in breathing must last for 10 seconds and are associated with a decrease in oxygenation of the blood. In general, the AHI can be used to classify the severity of disease (mild 5-15, moderate 15-30, and severe greater than 30).
According to a sleep apnea screening study performed by Adrian Williams and his colleagues, positive oximeter readings will show the existence of sleep apnea; together with a clinical score, false negatives can be drastically reduced. False-negatives can largely be explained by their less sever disease, as evidenced by fewer and shorter apneas. The study concluded that patients with positive oximeter readings or clinical scores of 3 or higher would indicate the presence of sleep apnea. The researchers also recommended repeating the pulse oximeter measurements over multiple nights to increase the accuracy.
Other criterions for screening sleep apnea using clinical data were studied and published. The studies had shown encouraging results.
Clinical Score

The clinical score consists of five components and each component has a score of one. These components are:

1. Loud and habitual snoring
2. Interrupted breathing
3. Excessive daytime sleepiness
4. Body mass index greater than 25
5. Use of hypotensive medications or blood pressure greater or equal to 140/90

The first two components are as reported by patient's spouse or family members. Examples of excess daytime sleepiness are: napping while driving, and difficulty in staying awake. One can also use the Epworth Sleepiness Scale.
The final clinical score is obtained by adding all the scores with a possible maximum of five.
Pulse Oximetry Reading

Pulse oximeter readings can be obtained with a wrist or handheld pulse oximeter which can take measurements continuously over the night. The readings follow three different patterns:

1. Positive: Cyclical changes with significant oxygen saturation changes
2. Negative: Steady readings with little variations during the entire sleep
3. Indeterminate: Frequent fluctuation within 4% range regardless of level of saturation

Significant oxygen saturation change is defined as a drop in oxygen saturation of greater or equal to 4 percent and to a level of 90% or below. Each series of changes represents an apnea episode.

Positive

Indeterminate

Negative

Epworth Sleepiness Scale

The Epworth Sleepiness Scale is a measure on how tired you are and reflects the amount and quality of sleep you are getting. Enter a score for each situation according to the following criterion:

• 0: no chance of dozing
• 1: slight chance of dozing
• 2: moderate chance of dozing
• 3: high chance of dozing

Epworth Sleepiness Scale
Situations Score

Sitting and reading
Watching TV
Sitting inactive in a public place (e.g a theater or a meeting)
As a passenger in a car for an hour without a break
Lying down to rest in the afternoon when circumstances permit
Sitting and talking to someone
Sitting quietly after a lunch without alcohol
In a car, while stopped for a few minutes in traffic

If your total score is 6 or under, you are doing well and deserve a pat on the back; if your score is 7 or 8, you are average; if your score is 9 and above, you have a problem and should seek help.