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PHARM 6 Gas > Gas unique properties > Flashcards

Gas unique properties Flashcards

1
Q 
advantages of this gas include 
analgesia 
rapid uptake and elimination 
little cardiac or respiratory depression 
nonpungent
A

nitrous oxide

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2
Q

metabolized by kidney not P450

A

sevoflurane

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3
Q

give to person with 3 risk factors for vomiting

A

Propofol

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4
Q

on the chart which choice is tissue uptake in ?
A-B
b
b-c

A

b-c

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5
Q

this scavenging compound result in the least compound A and CO production

A

Amsorb-calcium hydroxide

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6
Q

best for brittle asthma

drug not VIA

A

ketamine
bronchodilation
catecholamines

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7
Q

fastest acting but least potent VIA

A

desflurane

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8
Q

use this gas to offset hypotensive activity of other gases

A

nitrous oxide

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9
Q

decrease MAC needed/increase effectiveness of VIA

A

ketamine and dex

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10
Q

advantages of this gas include
rapid uptake and elimination
stable molecule
minimal biotransformation

A

desflurane

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11
Q

coronary steal

A

isoflurane

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12
Q

choice for inhaled induction

A

sevoflurane

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13
Q

special vaporizer

A

desflurane

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14
Q

on the chart which choice is lung blood equilibrium or blood uptake in ?
A-B
b
b-c

A

B

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15
Q

0.02% metabolized

A

desflurane

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16
Q

least metabolized

A

nitrous oxide 0.004%

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17
Q

decrease SVR most

A

desflurane

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18
Q

how do we overcome the time constant

TAU

A

increase fresh flow
increase gas concentration
hyperventilation-put it on manual and bag

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19
Q

NIOSH 1-2 ppm

A

halogenated agents

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20
Q

NIOSH 25 PPM

A

nitrous oxide

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21
Q

dissocative anesthesia

A

ketamine

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22
Q

increase IOP

A

Nitrous oxide

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23
Q

least lipid soluble

A

desflurane

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24
Q

metabolized by gut

A

nitrous oxide

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25
Q

requires 3L flow

A

sevoflurane

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26
Q

decrease HR the least

A

sevoflurane

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27
Q

only use for 23 MAC hours

why?

A

sevoflurane

F-ions

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28
Q

increase sympathetic tone

A

Nitrous oxide

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29
Q

best gas choice for asthmatic

A

sevoflurane

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30
Q

patient in shock goes to sleep faster why?

A

acidosis hyperventilation

decrease CO

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31
Q 
disadvantages of this gas include 
sympathetic stimulation 
expansion of closed are space
requires high concentration
interferes with vit B12 metabolism
A

nitrous oxide

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32
Q

0.2% metabolized

A

isoflurane

33
Q

best amnestic

not gas

A

midazolam

34
Q

increase CO would result in the most effect on which VIA

slow induction

A

isoflurane

35
Q

highest MAC

A

desflurane

36
Q 
disadvantages of this gas include 
susceptible to bio transformation 
reacts with soda lime and baralyme
increases fluoride concentrations  
expensive
A

sevoflurane

37
Q

Steps to overpressure/deepen quickly

A

switch to manual
increase gas/VIA flow
increase fresh gas flow-O2
hyperventilate-bag

38
Q

2-5% metabolized

A

sevoflurane

39
Q

don’t use in pneumothorax, belly surgery, sinus surgery, sitting craniotomy, tympanoplasty with grafting

A

nitrous oxide

40
Q

undergoes least biotransformation of the halogenated agents

A

Desflurane 0.02%

41
Q

which gas doesn’t cause MH

A

nitrous oxide

42
Q

fire

A

sevoflurane

43
Q

avoid in OB surgery not related to birth

A

nitrous oxide

44
Q

LMA are great for what patient population? Why?

A

LMA

less airway trauma, noxious stimuli

45
Q

on the chart which choice is lung wash in ?
A-B
b
b-c

A

A-B

46
Q

indirectly NE release

A

nitrous oxide

47
Q

VIA cause cerebral vasodilation and increase CBF.

What are you going to do about it?

A

hyperventilate to decrease CO2, causing vasoconstriction (CO2 is a potent vasodilator),
resulting in not increasing CBF

48
Q

most pungent

A

desflurane

49
Q

rapid high concentration administration of this gas increases the sympathetic action

A

desflurane

50
Q

takes a big dump in the lungs when discontinued

A

nitrous oxide

51
Q

renal toxicity

A

sevoflurane

52
Q

works like nitrous oxide

-receptor

A

ketamine

53
Q

methione, B 12, neural tube defect, pregnant ladies

A

Nitrous oxide

54
Q

if you use an LMA use less ?

A

OPIODS

55
Q

give to patient with low EF

not gas -

A

etomidate

56
Q 
advantages of this gas include 
good muscle relaxant 
decrease cerebral metabolic rate 
minimal biotransformation
maintains cardiac output
A

isoflurane

57
Q

DNA synthesis problems

A

nitrous oxide

58
Q

chlorine molecule

A

isoflurane

59
Q

most pungent?

A

Desflurane

60
Q

least pungent

A

sevoflurane

61
Q

fastest induction via

A

desflurane

62
Q

textbook seizure

A

thiopental

63
Q

compound A

A

sevoflurane

64
Q

increase HR the most

A

desflurane

65
Q

3 pillars that gases hit

A

anxiolysis
amnesia
anesthesia

66
Q

advantages of this gas include
rapid uptake and elimination
non-pungent

A

sevoflurane

67
Q

direct NE release

A

desflurane

68
Q

disadvantages of this gas include
pungent odor but not most pungent
potent vasodilation

A

isoflurane

69
Q

what are the four compartments we have to overcome

A

machine/circuit
alveoli/lungs
blood/venous/arterial-pulmonary venous circulation
Brain

70
Q 
disadvantages of this gas include 
airway irritant-most pungent 
low boiling point
sympathetic stimulation 
expensive
A

desflurane

71
Q

has chlorine instead of fluorine

A

isoflurane

72
Q

binds to trek 1

A

Propofol

73
Q

most potent VIA

A

isoflurane

74
Q

check cuff every 1.5 hours when using this gas

A

nitrous oxide

75
Q

Fast FA/FI rise

why

A

nitrous oxide

concentration we give

76
Q

use for kids

A

sevoflurane

77
Q

most potent VIA

A

isoflurane

78
Q

hypoxic at MAC

A

nitrous oxide

79
Q

doesn’t effect contractility

A

xenon

PHARM 6 Gas (2 decks)

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