Lasers Exam Questions and Correct Answers (Already Graded A+)
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Course
Lasers
Institution
Lasers
Lasers Exam Questions and Correct Answers (Already Graded A+)
What are the general considerations for argon? - Answer- - Absorbed selectively by Hgb and melanin or other similar pigments
-Transmitted through clear substances
-Tissue penetration: 0.5 to 2 mm
What are the general consideratio...
Lasers Exam Questions and Correct
Answers (Already Graded A+)
What are the general considerations for argon? - Answer- - Absorbed selectively by Hgb
and melanin or other similar pigments
-Transmitted through clear substances
-Tissue penetration: 0.5 to 2 mm
What are the general considerations for KTP? (frequency doubled YAG) - Answer- -
Strongly absorbed by Hbg, melanin, and similar pigments
-Transmitted through clear substances
-Tissue penetration: 0.5-2 mm
What are the general considerations for dye laser? - Answer- - Wavelength can be
tuned to suit application; eg 585nm (yellow) for hemoglobin absorption and 630nm (red)
for photodynamic therapy
What are the general considerations for Nd:YAG? - Answer- -More readily absorbed by
dark tissue
-Transmitted through clear fluids
- Tissue penetration: 0.5 to 2 mm
What are the general considerations for CO₂ laser? - Answer- -Strongly absorbed by
water and thus by all tissue, pigmented or not
-Tissue penetration: <0.5 mm
What are the general considerations for He- Ne? - Answer- - Used as a low-power
coaxial aiming beam for nonvisible lasers ( CO₂ & Nd:YAG)
- Has no significant tissue interaction
Which lasers have tissue penetration: 0.5 to 2 mm? - Answer- 1. Argon
2. KTP
Which lasers are transmitted through clear substances? Clear fluids? - Answer- 1.
Argon and KTP
2. Nd:YAG
What laser has longer wave length= lower frequency= lower energy? - Answer- CO₂
In CO₂ lasers, the greater the wavelength= greater absorption by___ - Answer- Water
Is the CO₂ a strong or weak laser? Where does it work on? - Answer- =Relatively weak
laser
, - works on superficial tissues
In Nd- YAG lasers, the _____ wavelength= ____frequency= ____ energy - Answer-
Shorter wavelength= HIgher frequency= higher energy
Is the Nd-YAG laser a weak or stronger laser? what does it do to the deeper tissues? -
Answer- - Powerful laser
- Coagulates and necrosis deeper tissues
Lasers are used for airway surgeries. What are five examples? - Answer- 1. Laryngeal
papillomas
2 Tracheal scaring
3. Vascular malformation
4. Neoplasma
5. Idiopathic subglottic stenosis
What are the risks with lasers? - Answer- - Loss of airway
-Fire
- Burns
- Eye damage
What do you wrap the laser tube or ETT with? - Answer- laser tape
What medication classification do you give for preoperative preparation? - Answer-
Antisialagogue
What do you give the OR personnel and patient for preparation for laser? - Answer- eye
protection
What can cause airway obstruction? - Answer- - Foreign body
-Airway edema
-Obstructive mass/lesion
T or F shared airway btwn the surgeon and anesthetist is an airway concern - Answer-
True
Ppt slide 16 - Answer- ...
Slide 17. Shows OSA and with an small or receding jaw - Answer- ...
Slide 18. OSA collapses that causes an area of lower pressure and higher flow velocity
- Answer- ...
T or F In OSA, there is floppy upper airways - Answer- True
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