Lasers

Question 1

LASER acronym

Answer 1

light amplification by the simulated emission of radiation

Question 2

pros to laser use

Answer 2

• precise
• minimal edema
• minimal bleeding
• only one wavelength

Question 3

3 components of a laser

Answer 3

• laser medium: contains atoms to create laser light, determines wavelength
• optical cavity: enhances laser with feedback mirrors
• pump source: external energy source

Question 4

wavelength: depends on and effects on

Answer 4

• depends on: the laser medium

- effects on: tissue depends on wavelength

Question 5

types of lasers (4)

Answer 5

• argon-gas: microscope, endoscope
• KTP-gas: fiberoptic, scanners, microscopes
• CO2
• nd:YAG

Question 6

CO2 laser

Answer 6

• ENT and otolaryngology
• can cause corneal injury: clear goggles
• very precise
• long wavelength

Question 7

ng:YAG gas laser

Answer 7

• ENT and ophthalmology
• shorter wavelength=deeper penetration
• burn retina: green lens

Question 8

laser concerns and precautions

Answer 8

• fire hazard: minimal FiO2
• eye damage: glasses
• noxious fumes: CO2 laser has the most, use evacuator and special masks
• close door and cover windows
• use laser resistant ETT if in airway

Question 9

laser glasses

Answer 9

• CO2 = clear
• ng:YAG = green
• argon and KTP: amber orange