A pulse oximeter is a small machine that shows your pulse and how much oxygen is in your blood. It goes on your finger like a clip and has a screen that shows the numbers. It helps doctors see if you are getting enough oxygen.

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A person’s blood should have enough oxygen to be healthy, which is usually between 95 and 100 percent. If it’s lower than 95 percent, there might be a problem with their lungs not getting enough oxygen. When it drops below 92 percent, it’s really serious and they might need to go to the hospital for help breathing with oxygen. This is for someone who doesn’t already have a sickness that affects their oxygen levels.

Don’t forget what you learned during the test.

Make sure there is no nail polish on the finger when doing the reading.

Make sure your hands are warm and your nails are not too long.

The patient’s blood needs to flow properly throughout their body.

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