Nitrous final

Question 1

avwhat is stage I of anesthesia?

Answer 1

analgesia

Question 2

what is stage II of anesthesia?

Answer 2

delirium/excitement

Question 3

what is stage 3?

Answer 3

Surgical anesthesia

Question 4

What is stage 4?

Answer 4

Respiratory paralysis

Question 5

Important for N2O/O2 sedation- concerns the amount of gas given to a patient

Answer 5

minute ventillation

Question 6

what is the average individual tidal volume?

Answer 6

500 mL tidal volume

Question 7

T/F Nitrous oxide is dissolved in the blood?

Answer 7

false

Question 8

Why can’t you use lubricants around the delivery system?

Answer 8

it can ignite the hydrocarbons if rapid changes in pressure occur

Question 9

what determines how quickly the the N20 crosses pulmonary membrane and enters the blood stream?

Answer 9

Difference in Partial Pressures between gas and liquid determines how quickly it crosses the pulmonary membrane and enters the blood stream

If a drug is INSOLUBLE, it will each equilibrium quickly…cross the blood brain barrier and have a rapid onset.

Question 10

partial pressure of N2O is ___ times that of N2?

Answer 10

31 times! so this means it rapidly replaces air containing spaces in the body

Question 11

what is the MAC value of Nitrous oxide?

Answer 11

104%
MAC means the amount of drug necessary to prevent movement in 50% of individuals with surgical stimulation

THIS ALSO MEANS it’s the LEAST potent of all anesthetic gases

Question 12

what receptors does N2O Effect?

Answer 12

the opioid receptrs

Question 13

where is nitrous obis metabolized?

Answer 13

NOT IN THE LIVER
.004% in the GI….
Elimination occurs primarly though the lungs!

Question 14

where does the elimination of nitrous oxide occur?

Answer 14

in the lungs. Recovery in 3-5 minutes

Question 15

what does barometric pressure have to do with N2)

Answer 15

slight increase in N2O concentration needed to obtain the same effects as sea level

Question 16

what is N2O regulated by?

Answer 16

the FDA “drug status”

And by the DOT- potentially dangerous to transport

Question 17

what is the max N2O?

Answer 17

70%

Question 18

what is the purpose of the O2 failsafe mechanism?

Answer 18

provides automatic termination of N2O flow if O2 supply is inadequate or depleted

Question 19

Does N2O affect the cardiac system?

Answer 19

No

Question 20

what its he effect of N2O on mycocaridal ischemia?

Answer 20

positive because it provides O2

Question 21

Does N2O suppress respiratory rate?

Answer 21

NO

Question 22

what is the risk of emphysema and chronic bronchitis with N2O sedation?

Answer 22

increased susceptibility to hypoxia

Question 23

can you give nitrous oxide when pregnant?

Answer 23

avoid during the 1st trimester

Question 24

wy can’t you give N2O to cancer patients?

Answer 24

it can increase pulmonary fibrosis in patients receiving bleomycin sulfate

Question 25

can you use N2O if patient has malignant hyperthermia?

Answer 25

not a trigger and can be used safely