Complications of ventilation tubes: - Dr. Nassem Talaat

Def:
Laser In ENT
-Laser is the abbreviation of light Amplification by Stimulated Emission of Radiation
-The history of laser begins in 1917 with Einstein who discovered stimulated
emission, in 1960, Maiman made the first laser.
- The radiant energy emitted by laser has 3 characters: monochromatic (one wave
length), coherent (in one phase) & collimated (parallel)
- Laser has 3 essential elements: lasing medium (gas, liquid or solids)
Advantages of laser use:
Excitation source (e.g. electrical)
Two mirrors for optical feedback
-Precise dissection - Non touch technique
-Less operative bleeding -Less post operative pain
-Minimal post operative edema & scarring
-Possibility of local anesthesia
-Less post operative hospital stay & cost
Types of laser used in medicine: (according to lasing medium)
1- CO2 laser 2- Argon laser 3- ND: YAG
4- KTP laser 5- Diode 6- Dye laser
Carbon dioxide laser:
Most common type, wave length 10.6 um (invisible), site indicated by helium
– neon aiming beam.
Intracellular water absorbs light energy causing cell vaporization, used by hand
piece, or connected to operating microscope
Uses of CO2 laser in ENT
A) Nasal surgery
- Cong.: Choanal atresia
- Inflammatory: laser turbinectomy
-In seleroma : excision of localized mass ,widening of nostril after fibrosis
-allergy: laser polypectomy