Blood oxygen saturation has become an important physiological indicator of the daily monitoring of the average family; medical staff in the room and out of the clinic will also be blood oxygen as a must-monitoring project, the use of the number of trends over the stethoscope.
Oximeter non-invasive measurement of infrared technology to measure the fingers, toes, ears, which is the most common measurement of blood oxygen in the place of oxygen content, the measurement of the object more accurately called the oxygen saturation, that is, SpO2, and will be tested in the form of a number of results expressed in the form of the main display of the actual oxygen content of oxygen under the ratio of the full oxygen saturation, generally expressed as a percentage of the human body subhealthy. Typical oxygen saturation is 90-100%, but can be as low as 60%. The body's oxygen saturation depends on many factors, the most important of which is the patient's body's blood supply capacity is relatively poor, HbO2 readings will fall. The fingernail oximeter is small, low power consumption, easy to use and portable. The measurement is made by inserting the finger into the finger-covered photoelectric sensor. The device collects the data through a photosensitive detector and then displays the measurement results on an indicator. Clinical trials have shown high accuracy and repeatability. Fingernail oximeters are also useful for measuring heartbeat.