Pulse oximetry is a standard non-invasive method of measuring blood oxygen saturation (SpO2).
In developing countries, pulse oximeters are rare because of expense and electricity
requirements. Our ECEM group has developed the Phone Oximeter, which uses a cell phone
(widely available in developing countries) to compute and analyze information from a pulse
oximeter sensor. To further reduce costs, we use the integrated flashlight of a cell phone's
camera to extract SpO2 (Camera Oximeter), eliminating the need for external hardware. This
study aims to calibrate the Camera Oximeter by exposing 30 healthy adult volunteers to
various altitudes in UBC's hypoxia chamber.