Pulse ox Flashcards
1
Q
Based of what law
A
beer-Lambert Law
2
Q
The pulse ox functions with 2 what
A
wavelengths of light
3
Q
What are the 2 wavelengths of light? what they are absorbed by? and there nanometers of light used?
A
Red- absorbed by deoxyhemoglobin (660nm)
Infrared- Absorbed by oxyhemoglobin (940nm)
4
Q
What alterations/conditins affect accuracy of pulse ox
A
Room lights
Cautery
Anemia
Blood dyes (methylene blue, indigo carmine)
Cold pt
Hypotensive
Thick skin, scars, nail polish, skin grafts, burns
