How Does a Pulse Oximeter Work? | Pulse Oximetry

How does a Pulse Oximeter work? What is Pulse Oximetry? Watch the video to find out!
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➡️ How Does a Pulse Oximeter Work?
Pulse oximeters work on a simple but brilliant principle. Blood absorbs light, and there’s a distinct difference between the wavelengths that go through oxygenated and deoxygenated blood. The finger clip of a pulse oximeter consists of a transmitting light source that emits a broad spectrum of light. On the other end, there’s a receiver that measures how much light passes through.

The diode on the receiving end is capable of detecting the wavelength of light. The internal circuits and processing components of the pulse oximeter do some calculations as well. The device has to compensate for the ambient light, finger size, and the absorbance of the rest of the tissues. There’s a reference curve saved in the memory of the device to calibrate the incoming readings and normalize them. This increases the precision of the results that it provides.

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🚑MEDICAL DISCLAIMER
Medicine and Respiratory Therapy are continuously changing practices. The information in this video is for educational and entertainment purposes only. For medical advice, please consult with a physician or qualified medical professional.

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⏰TIMESTAMPS
0:00 - Intro
0:06 - How Does a Pulse Oximeter Work?

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