A pulse oximeter offers a painless and reliable way for clinicians and domestic users to measure a person's blood oxygen level, which is an indicator of how well the body distributes oxygen from the lungs to the cells, tissues and organs. The body closely self-monitors blood oxygen levels to keep them within a specific range. Normal pulse oximeter readings usually range from 95 to 100 percent, however, each person may rely on their own SpO₂ baseline to keep track of the differences. Generally, values under 90 percent are considered low and can be a sign of a condition known as hypoxemia. It is related to respiratory or cardiovascular system abnormal functioning and may result in various symptoms, such as shortness of breath, a rapid heartbeat, headache, dizziness, etc. An oximeter is a helpful tool for checking oxygen levels so that low readings can be found out early and necessary measures can be taken.
- Pulse Oximeter