Eugene Trosman and Eugene Palatnik
Analog Devices

In addition to heart rate, blood pressure, respiratory rate, and temperature, pulse oximetry (PO) is considered to be the "fifth vital sign" of health status. A pulse oximeter is a medical device that measures the amount of oxygen in a patient's arterial blood. This paper describes how to build a pulse oximeter using the Precision Analog Microcontroller family of products from Analog Devices.

Reproduced with the permission of Analog Devices, Inc.