The clip is removed, and you are free to return to previous activities. After exercise, cool down gradually by walking or pedaling slowly for a few minutes. Your pulse and blood pressure may be monitored during this time until they return to normal. Factors affecting results Poor circulation in the fingers, toes, or earlobe. Bright external light.
Smoking can affect blood oxygenation.
It's noninvasive, quick, and simple. It has limited diagnostic value because it evaluates only oxygen saturation. The next step - Measurement of oxygen saturation will help your doctor evaluate the severity of your disease, and will determine if you need supplemental oxygen. If a finger probe will be done, do not wear nail polish.