Welcome to the new Tamingthesru

Same great content - new look - improved search

Jeffery Hill, MD M.Ed 11/9/15 Jeffery Hill, MD M.Ed 11/9/15

Respiratory Monitoring - An Introduction to Pulse Ox and Capnography

Both pulse oximetry and capnometry rely on the Beer-Lambert Law.

In 1760, Johann Heinreich Lambert proved that the absorbance of light through a material is proportional to the thickness of the material.
In 1852, August Beer proved that the absorbance of light through a material is proportional to the concentration of the attenuating substance in the material.