Pulse ox

Question 1

Based of what law

Answer 1

beer-Lambert Law

Question 2

The pulse ox functions with 2 what

Answer 2

wavelengths of light

Question 3

What are the 2 wavelengths of light? what they are absorbed by? and there nanometers of light used?

Answer 3

Red- absorbed by deoxyhemoglobin (660nm)

Infrared- Absorbed by oxyhemoglobin (940nm)

Question 4

What alterations/conditins affect accuracy of pulse ox

Answer 4

Room lights
Cautery
Anemia
Blood dyes (methylene blue, indigo carmine)
Cold pt
Hypotensive
Thick skin, scars, nail polish, skin grafts, burns