Flashcards in Must know for test 2 Deck (74)
in the equation for KE which has more of an influance on KE
mass or velocity?
what is the basic unit of energy?
what is a joule?
the force of one newton that moves it's point of application
1 meter in the direction of that force!!
Joule is a term of what? energy work or power?
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?
no movemnet no work
What does LASER stand for
Carbon dioxide laser properties (2)
marked with a helium-neon aiming beam
what is the Carbon dioxide laser used for
upper airway sx
Nd-YAG laser properties (1)
short wave length allows transmission by fiberoptics
Nd-YAG laser is used for what sx's
distal tracheobronchial tree and retina sx
KTP laser can be transmited by what?
KTP laser is used in what sx's
Argon Laser can be transmitted by what
Argon laser is used in what sx's
neurological, retinal, and otolaryngological
with laser wavelengths longer wavelengths= what?
lower freq and lower energy
(all start with L)
with laser wavelengths shorter wavelengths= what?
higher freq and higher energy
(for jake sHorter= Higher and Higher) : )
frequancy is inversly proprtional to what??
the higher the frequency the smaller the wavelength
what has a higher freguency?
KTP Wave length is 532
Nd:YAG wave length 1064
freq is inversly proportional to wave length
the longer the wavelength the lower freq
which laser is for deep tissue? and why?
b/c of near infrared I guess????
what is the only laser that wet tissue can protect pt (like a wet towel)
which laser is more readily absorbed by dark tissue?
transmitted through clear fluids
tissue penetration 2-6 mm
which laser is strongly absorbed by water, and thus by all tissue, pigmented or not. tissue penetration <0.5mm
which has a higher freq
CO2 WL 10,600
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.
which has a higher freq
KTP WL 532
Argon WL 488-515
longer WL= lower freq
shorter WL= higher the freq
the greater the wavelength = the _______ absorption by water
CO2 greatest WL 10,600
CO2 laser properties?
Longer WL= Low freq= Low energy
Nd-YAG laser properties
sHorter WL= Higher freq= Higher energy
when doing airway sx with a laser what do you want to do with FiO2?
40% or less (preferable 21%)
When doing airway sx with a laser what VAA do you want to avoid? and why?