A pulse oximeter is a small, portable medical device used to measure oxygen saturation levels and heart rate in the body [1.1.1, 1.1.4]. It typically clips onto the fingertip to provide quick results without pain or blood sampling.
Key functions include: Oxygen Saturation (SpO2) Measurement: It shows the percentage of oxygen being carried by red blood cells in the body. In healthy individuals, normal blood oxygen levels are typically between 95% and 100% [1.3.1, 1.3.3]. If oxygen levels drop to 92% or below, medical advice should be sought immediately [1.3.6, 1.3.7]. Pulse Rate (PR/BPM) Measurement: It indicates how many times the heart beats per minute [1.1.4, 1.4.6]. A healthy adult's normal resting pulse rate is typically between 60 and 100 BPM. Asthma, pneumonia, etc.