Vaporizers ppt

Question 1

MAC

Answer 1

Minimum alveolar concentration, the % at which 50% of the population will not move to surgical stimulation

Question 2

vapor

Answer 2

gas phase of a substance that is liquid at room temp

Question 3

vaporization

Answer 3

conversion of a liquid to a ga (inside a vaporizer)

Question 4

Vaporization depoends on what 3 things

Answer 4

VP of agent
Temp of enviroment
Amount of carrier gas (N20 and O2)

Question 5

What is the pressure created when molecules “bombard”: the walls of the container

Answer 5

Saturated VP

Question 6

VP of
Halothane
Enflurane
Isoflurane
Desflurane
Sevoflurane

Answer 6

243
170
239
669
171

Question 7

What does heat do to SVP

Answer 7

incraeses it
more molecules enter gas phase
less molecules reenter gas phase

Question 8

What does cooling do to SVP

Answer 8

Decreases it
less molecules enter gas phase
more molecules “re-enter” liquid phase

Question 9

At constant temp what happens to SVP

Answer 9

# of molecules entering and leaving liquid are equal
# of molecules in vapor phase stays constant

Question 10

if flow rate is 1L/min or 1000ml/min if i turn vaporizer to 1% how many ml of iso come out every min (assuming iso’s MAC is 1%)

Answer 10

10ml/min

Question 11

What is so special about Desflurane

Answer 11

boiling point 22.8 degrees C (73 F room temp)
it will just naturally want to boil and turn into a gas
so it completly caotic and will be inaccurate on delivery
so they heat it up. and presureize it to double the atmosphere (1600mmHg)
so then all of it is at a stable gasses phase
also has a valve that will release extra gas when being opened
Tec-6
must be plugged in and have battery back up

Question 12

Desflurane

Answer 12

Mac 6.6%= no matter what flow is set whan 6.6% gas is being deivered is will be deliverd
B/G: 0.42 fast onset fast offset
VP-669
Soda lime stable

Question 13

Temp the Tec-6 makes desflurane?

Answer 13

39 C

Question 14

What pressure does teh tec-6 make Desfluranr?

Answer 14

1500mmHg

Question 15

if u have a low VP what would the carrier gas need to be to carry the gas. high or low?

Answer 15

high
ex methoxyflurane VP 23 (needs lots of FGF)
Isoflurane 239 VP needs less FGF to obtain molecues

Question 16

HI low Hi
and
Low hi low
means what?????

Answer 16

If you have a high SVP put into a Vaporizer made for a lower concentration it will produce a High output
and vise versa