The FDA discourages the use of the sports model for medicine and the medical model for sports. They are also more expensive (in the $100-$300 range) than the more everyday type of devices that can retail for as little as $15. Look for devices that advertise “plethysmograph and perfusion index,” as these tend to be more accurate. These brands tend to be more expensive however, we are more confident of their accuracy. Massimo and Innovo are other companies that make medical-grade pulse oximeters, but there are a lot more companies out there now that make these devices. Nonin is the company that invented the small finger oximeter and with which we did some of our research (see video below). Tiep for many years in research studies on oxygen and oximeters. My patients and I were lucky enough to work with Dr. He is well known for his research with oxygen and breathing techniques in pulmonary patients. Brian Tiep for advice to those who wish to purchase their own oximeter. The amount of oxygen in your blood is described by the “oxygen saturation” – which is literally the percentage of your blood that is ‘fully loaded’ with oxygen. So be patient and wait in a relaxed state as you do your reading! Another thing to remember about oximetry is that there is a delay of up to 30 seconds between what goes on in your lungs and the reading that you make at the fingertip. Smoking increases the carbon monoxide in your blood, and the pulse oximeter can give a falsely high reading. If you smoke, you should not waste your time and money buying an oximeter! The oximeter can’t tell the difference between blood that is carrying oxygen, and blood that is carrying carbon monoxide. If you have cold hands or poor circulation, then the reading might be inaccurate too, because you are not sending enough blood to your fingertip where the reading is being taken. If you wear nail polish (especially blue, green, black or metallic ones), then the reading might be inaccurate because the oximeter cannot ‘see’ your blood through the nail polish. Several things can affect the accuracy of the pulse oximeter reading that you get with a finger oximeter. By measuring the color, you can get an idea of how well oxygenated your blood is. ![]() Blood carrying a lot of oxygen is bright red, whereas blood with lower levels of oxygen becomes more bluish/purple in color. What do you need to know?Ī pulse oximeter works by shining a light onto the blood vessels in your fingernail and measuring the color of your blood. But what if you haven’t been through a class. Pulse oximeters are great for patients who have gone through a pulmonary rehabilitation class and are knowledgeable about oxygen, oxygen saturation, and oximeters.
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