A pulse oximeter is a small, lightweight device used to monitor the amount of oxygen carried in the body. This noninvasive tool attaches painlessly to your fingertip, sending two wavelengths of light through the finger to measure your pulse rate and how much oxygen is in your system. Once the oximeter finishes its assessment, its screen will display the percent of oxygen in your blood coming from your heart—as well as your current pulse rate. Blood Oxygen Saturation (SpO2)
Your SpO2 reading is an estimation of the amount of oxygen in your blood. An SpO2 reading of 95% or greater is generally considered to be a normal oxygen level. However, an SpO2 reading of 92% or less (at sea level) suggests that your blood is poorly saturated. Insufficient saturation can cause a range of adverse health conditions—including chest pain, shortness of breath and increased heart rate. Pulse Rate
Your pulse rate is an estimation of the number of times your heart contracts per minute. Normal pulse rate values for adults range from 60 to 100 beats per minute (bpm)