The development of pulse oximetry has recently made it possible to calculate the perfusion index (PI), obtained from the ratio between the pulsatile and nonpulsatile signals of absorbed light.

The perfusion index (PI) derived from a pulse oximeter is a marker that allows noninvasive and continuous monitoring of peripheral perfusion.

Using the breadboard to build a pulse oximeter Start by placing your Raspberry Pi Pico on your breadboard, straddling the central channel with the micro USB port towards the edge.

In the first article in this two-part series, we covered the technical specifications of a pulse oximeter. In this article, we’ll cover design considerations such as transmissive vs reflective, sensor ...

Using a Pi Pico W for the brains, [Rasic]’s device can record, store and analyze the data from an arm cuff, stethoscope, electrocardiograph (ECG), and pulse oximeter.

The Food and Drug Administration’s recommendations apply to pulse oximeters, which are clip-on devices used in hospitals and medical clinics to ensure patients are getting enough oxygen.