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38 terms

Anesthesia gas

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store and delivers oxygen, vaporizes liquid anesthesia and mixes wiht oxygen, and removes exhaled gases
functions of the anesthesia gas machine
disposes exhaled gases
scavenger
removes carbon dioxide
absorber canister
a green tank/white, compressed gas, has a pin index and pressure gauge
oxygen tank
used so only the correct sized cylinder will ft into the yoke
pin indexed
2200 psi
"E" cylinder holds-
indicates the psi present in a tank
pressure gauge
psi x .3 =
# liters of oxygen in tank
full oxygen tank has how many liters
2200 psi x .3 = 660 liters
this indicates how many liters/minutes of oxygen are flowing to the animal
oxygen flowmeter
100-200 psi
this is when you change oxygen tanks
a blue tank, not seen often, pressure gauge measures gas portion not liquid portion
nitrous oxide tank
18 #
full tank weighs
13 #
empty tank weighs
5 #
weigt f liquid/gas component
< 500 psi
change nitrous oxide tank
has a level window, fill port, measures the % of anesthesia gas mixed with the oxygen as it passes out
vaporizer
liquid--> vapor
oxygen flows by it
inorder for the vaporizer to work
oxygen flowmeter must be on
direct, indirect
types of vaporizers
very precise, adjusts for oxygen flowrate, fewer mistakes. (out of circuit)
Direct vaporizer
allows oxygen to by-pass vaporizer, oxygen goes to rebreathing bag then to the patient
oxygen flush valve
non-rebreathing, rebreathing
2 types of breathing circuits are
breathing circuit that doesn't rebreath gases (made for patients <15 #
non-rebreathing
a breathing circuit that constantly reuses oxygen and anesthetic gas, removes carbon dioxide ad recycles exhaled gases
rebreathing (circle systems)
capacity of 1-2 liters, stores gases, easier to breathe from reservoir, allows patient to be bagged, and respiratory monitoring
reservoir bag
endotracheal tube cuff not inflated properly, endotrach tube too small in diameter, tube not in trachea
decreased movement of bag
prevents atelectasis, flushes out CO2, use CPR, perform every 5 min during long procedures
bagging patient
If oxygen flow rate too high, or reservoir bag is too large, or pop off valve is not open enough then
bag is over filled
causes injury to lung alveoli
over fill of bag
If oxygen flow rate too low, oxygen tank empty, reservoir bag too small, pop off valve open too much then
under filled bag
one way valve
inhalation flutter valve/tubing and exhalation flutter valve/tubing
tubing that connects to the endotracheal tube
Y-piece
gives pressure relief to the system, allows waste gases to leave the system and enter the scavenger system, close to bag animal; then reopen
pop off valve
allows waste gases to leave the system and enter the scavenger system
pop off valve
contains soda lime, has a moisture relief valve
carbon dioxide absorber cannister
soda lime + carbone dioxide =
heat and color change to purple
on top of CO2 absorber, indicates pressure in airways and lungs
pressure manometer