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Flashcards in Must know for test 2 Deck (74)
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1

in the equation for KE which has more of an influance on KE

mass or velocity?

Velocity

2

what is the basic unit of energy?

Joule

3

what is a joule?

the force of one newton that moves it's point of application

1 meter in the direction of that force!!

4

Joule is a term of what? energy work or power?

energy

5

how much work is done pushing on a 100 kg pt on a 75kg operating table and you can't get teh damn thing to move?

0

no movemnet no work

6

What does LASER stand for

Light
Amplification
by
Stimulated
Emission
of
Radiation

7

Carbon dioxide laser properties (2)

invisible
marked with a helium-neon aiming beam

8

what is the Carbon dioxide laser used for

upper airway sx

9

Nd-YAG laser properties (1)

short wave length allows transmission by fiberoptics

10

Nd-YAG laser is used for what sx's

distal tracheobronchial tree and retina sx

11

KTP laser can be transmited by what?

fiberoptics

12

KTP laser is used in what sx's

neurosurgical and
otolarygeal

13

Argon Laser can be transmitted by what

fiberoptics

14

Argon laser is used in what sx's

neurological, retinal, and otolaryngological

15

with laser wavelengths longer wavelengths= what?

lower freq and lower energy
(all start with L)

16

with laser wavelengths shorter wavelengths= what?

higher freq and higher energy
(for jake sHorter= Higher and Higher) : )

17

frequancy is inversly proprtional to what??

wavelength
the higher the frequency the smaller the wavelength

18

what has a higher freguency?
KTP Wave length is 532
or
Nd:YAG wave length 1064

KTP
remember
freq is inversly proportional to wave length
the longer the wavelength the lower freq

19

which laser is for deep tissue? and why?

Nd-YAG
b/c of near infrared I guess????

20

what is the only laser that wet tissue can protect pt (like a wet towel)

CO2 laser

21

which laser is more readily absorbed by dark tissue?
transmitted through clear fluids
tissue penetration 2-6 mm

Nd-YAG

22

which laser is strongly absorbed by water, and thus by all tissue, pigmented or not. tissue penetration <0.5mm

CO2

23

which has a higher freq
argon WL=488-515
or
CO2 WL 10,600

argon
b/c freq is inversly proportional to WL, thus the longer the WL the lower (slower the freq), and also the shorter the WL the higher (faster) the freq.

24

which has a higher freq
KTP WL 532
or
Argon WL 488-515

argon
longer WL= lower freq
shorter WL= higher the freq

25

the greater the wavelength = the _______ absorption by water

greater
CO2 greatest WL 10,600

26

CO2 laser properties?
WL 10,600

Longer WL= Low freq= Low energy

27

Nd-YAG laser properties
WL 2064

sHorter WL= Higher freq= Higher energy

28

when doing airway sx with a laser what do you want to do with FiO2?

40% or less (preferable 21%)

29

When doing airway sx with a laser what VAA do you want to avoid? and why?

N2O
supports combustion

30

when doing airway sx with a laser what must you always have immediately available?

bottle of saline or water