OxyGap : Comparison Between Different Pulse Oximeter and With the Arterial Blood Gase
This study, called 'OxyGap', is comparing different types of oxygen monitors (called pulse oximeters) with a more exact blood test. These monitors are commonly used in hospitals to check how much oxygen is in a patient's blood. Getting the right amount of oxygen is very important for patients, especially those in intensive care, because both too little (hypoxemia) and too much (hyperoxemia) can be harmful. We know that different oxygen monitors might give slightly different readings. This study aims to find out how accurate each type of monitor is compared to a direct blood measurement. The information gathered will help doctors and nurses choose the best monitors and give patients the most effective oxygen therapy.
At a glance
What is this study about?
When you're really unwell, especially if you're in intensive care, doctors and nurses need to keep a close eye on many things, including how much oxygen is in your blood. This is usually done with a small clip on your finger or ear, called a pulse oximeter, which gives a reading of your 'SpO2'. It's often called the '5th vital sign' because it's so important.
While these monitors are great for quickly checking oxygen levels, we know that different brands and types might not always give exactly the same reading, or might not be as precise as a direct blood test. For patients needing oxygen therapy, getting the oxygen levels just right is crucial. Too little oxygen can be dangerous, but surprisingly, too much oxygen can also cause problems. Because of these differences in monitors, it can be tricky for healthcare teams to always know they are giving the perfect amount of oxygen.
That's why this study, 'OxyGap', is so important. We're directly comparing the readings from several common pulse oximeters (like Nonin, Masimo, Philips, and Nellcor) with a very accurate blood test from an artery. By doing this, we can understand exactly how accurate each monitor is and if any tend to read a bit higher or lower than the true level. This information will help doctors choose the best monitors and make sure they can set the most accurate oxygen targets for patients, ultimately leading to better and safer care for people in critical situations.
Key takeaways
- This study helps ensure patients get optimal oxygen care.
- It compares different oxygen monitors to a precise blood test.
- Participation involves routine measurements, no extra procedures.
- Aims to improve accuracy in oxygen monitoring for critical care.
- Findings will help refine oxygen therapy guidelines.
Who may be eligible?
This study is looking for adults aged 18 or older who are currently receiving care in an Intensive Care Unit (ICU). To be part of the study, you must already have a special thin tube, called an arterial catheter, placed in an artery. This catheter is used for taking blood samples and monitoring your blood pressure, so it won't be put in just for this study.
However, there are reasons why someone might not be able to join. For example, if the oxygen monitor can't get a clear signal from your finger, or if you have nail polish or very dark nails that might interfere with the reading. You also wouldn't be able to participate if you have a certain blood condition called methemoglobinemia, or if you are in isolation due to certain infections like multi-resistant bacteria, C-Difficile, or COVID-19. Finally, patients who need to be positioned on their front (prone position) also wouldn't be able to take part.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- Are you 18 years old or older?
- Are you currently an intensive care patient?
- Do you already have a tube in an artery for blood tests?
- Are your nails free from dark polish or discoloration?
- Are you able to get a clear oxygen monitor reading?
What does participation involve?
If you decide to take part, the study will involve briefly measuring your oxygen levels using several different types of oxygen monitors (the finger clips) at the same time an arterial blood sample is taken (which you would already be having as part of your normal care). We will connect the study monitors to you for a very short period to get their readings while a small blood sample is collected from your existing arterial catheter. There are no extra hospital visits required, and no new medications given specifically for this study. The total duration of your participation would be very brief, just during the short time these measurements are taken, which fits in with your routine intensive care.
Potential risks and benefits
Locations (2)
- CHUMVerified postcodeMontreal, Canada· Not yet recruiting
- Institut Universitaire de Cardiologie et de Pneumologie de QuébecVerified postcodeQuébec, Canada· Recruiting
Common questions
What is a pulse oximeter?
It's a small clip, usually on your finger, that measures how much oxygen is in your blood without needing to take blood.
Why is it important to check oxygen levels?
Having the right amount of oxygen is vital for your body. Too little or too much can both be harmful, especially in intensive care.
What will I have to do if I join the study?
We will simply take readings from different oxygen monitors at the same time you are having a routine blood test from an existing tube in your artery.
Are there any extra tests or medications?
No, this study doesn't involve any extra tests, medicines, or procedures beyond what you would already be having as part of your care.
Can I stop participating if I change my mind?
Yes, you can withdraw from the study at any point without it affecting your medical care.
How to find out more
François Lellouche
Always speak to your GP or specialist before deciding to take part in a study.
Interested in taking part?
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