Anesthesia machine

Question 1

Where in anesthesia cirucit is the best location for sampling CO2

Answer 1

closest to pt

Question 2

What is the best method for monitoring capnography during MAC cases?

Answer 2

nasal canula with co2 sampling w a facemask for oxygenation

Question 3

What happens when the connection btw the ventilator and anesthesia scavenging becomes occluded

Answer 3

barotrauma-pt is isolated from positive pressure relief valve of scavenging interface

Question 4

To what pressure is E cylinder oxygen regulated in anesthesia machine?

Answer 4

45-50

Question 5

Pressure in an e cylinder of nitrous oxide remains at ______ until volume of gas is less than ____L

Answer 5

745

400L

Question 6

What is pressure and volume of a full e cylinder of nitrous?

Answer 6

745 and 1590 L

Question 7

How do you use weight to determine volume of a nitrous cylinder?

Answer 7

Empty cylinder weighs 14 g

weight in grx(1 mol/44g N2O)=moles x(22.4/1mole)= volume in L

Question 8

if a breathering circuit has 10 l and FGF of 2lpm. if gases are changed, how long will it take for a 95% difference to be obtained?

Answer 8

10/2= 5= tcx3=15 min

Question 9

Bain breathing circuid is a modification of which circuit type?

Answer 9

mapleson D-fresh gas inlet in tube
best for controlled ventilation.
Used for continuous CPAP to nondependent/operative lung