Pulse oximetry is a noninvasive method for monitoring a person's oxygen saturation. Peripheral oxygen saturation (SpO2) readings are typically within 2% accuracy (within 4% accuracy in the worst 5% of cases) of the more desirable (and invasive) reading of arterial oxygen saturation (SaO2) from arterial blood gas analysis. But the two are correlated well enough that the safe, convenient, noninvasive, inexpensive pulse oximetry method is valuable for measuring oxygen saturation in clinical use.

The most common approach is transmissive pulse oximetry. In this approach, a sensor device is placed on a thin part of the patient's body, usually a fingertip or earlobe, or an infant's foot. Fingertips and earlobes have higher blood flow rates than other tissues, which facilitates heat transfer. The device passes two wavelengths of light through the body part to a photodetector. It measures the changing absorbance at each of the wavelengths, allowing it to determine the absorbances due to the pulsing arterial blood alone, excluding venous blood, skin, bone, muscle, fat, and (in most cases) nail polish.

Wikimedia Foundation. (2021, August 8). Pulse oximetry. Wikipedia. https://en.wikipedia.org/wiki/Pulse_oximetry.


Edan H100B Pulse Oximeter

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Description: The H100B Pulse Oximeter provides a simple universal tool for patient monitoring; from spot checks to continuous monitoring. All monitoring data can be transferred to PC for storage, management, review and printing.  Features:  FDA Approved LCD display RTC (Real Time Clock) display Backlight control and automatic power-off function for power saving SpO2 and Pulse rate measurement Display numeric and waveform...


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This fingertip pulse oximeter measures heart rate and oxygen saturation. For medical and home use. This is a noninvasive and painless test that measures your oxygen saturation level, or the oxygen levels in your blood. It can rapidly detect even small changes in how efficiently oxygen is being carried to the extremities furthest from the heart, including the legs and the arms. Covid...


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Description The GE DASH 3000 Patient Monitor is made to withstand your demanding portable applications, and advanced capabilities allow you to reliably move a patient throughout your facility. Weighing less than 12 pounds, regardless of configuration, this lightweight monitor is made to move with your patients. The compact, ergonomic package, complete with integral power supply, allows easy handling, and a...


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Description The GE DASH 4000 Patient Monitor is one of the most advanced Monitors available for clinicians who want to improve the quality of their care. DASH monitors feature ECG, NIBP, SP02, and other leading patient-safety enhancements in a rugged, ergonomic design light and durable enough to handle even air transport. Modular enhancements and a large 10.4″ color display make...