A pulse oximeter is a small, non-invasive medical device that clips onto a finger to measure your blood oxygen level and pulse rate.
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Pulse Oximeter
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- The device shines red and infrared light through your fingertip.
- Absorption: Oxygen-rich hemoglobin absorbs more infrared light, while oxygen-poor hemoglobin absorbs more red light.
- Calculation: A tiny sensor calculates the percentage of oxygenated blood and shows it on a digital screen.
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