Doc_Simplifies on Instagram: "SpO₂ or Oxygen Saturation refers to the percentage of oxygen in the blood, which shows how efficiently the respiratory system and heart are supplying oxygen. It is measured using a Pulse Oximeter that detects oxygen levels through hemoglobin, mainly Oxyhemoglobin and Deoxyhemoglobin, with the help of red and infrared LED light and a photodetector. Normal SpO₂ is 95–100%, while lower levels indicate Hypoxemia, Hypoxia, or even Silent Hypoxemia. Factors like anemia, p