Deck 41: Nitrous Oxideoxygen Analgesia

Question 1

Subjective symptoms of relative analgesia include:
1) heaviness of limbs, floating sensation, tingling.
2) decreased fear, decreased pain memory.
3) desire to maintain that state.
4) feeling of warmth.
5) decreased awareness of time.

A) 1, 2, 3, 5
B) 1, 3, 4, 5
C) 1, 4, 5
D) 2, 3, 4, 5
E) All of the above

Answer 1

All of the above

Question 2

The flowmeters indicate that a client is receiving 4 L of nitrous oxide and 6 L of oxygen. What is the client's tidal volume?

A) 4 L
B) 6 L
C) 10 L
D) 2 L
E) 7 L

Answer 2

10 L

Question 3

Nitrous oxide-oxygen sedation may be particularly useful for clients with a history of:
1) hypertension.
2) asthm a.
3) epilepsy.
4) cardiovascular disease.
5) emphysem a.

A) 1, 2, 4
B) 1, 2, 3, 4
C) 1, 3, 4, 5
D) 1 and 4
E) All of the above

Answer 3

1, 2, 4

Question 4

The immediate treatment for entry into the excitement stage of analgesia is which of the following?

A) Telling the client to breathe through the mouth
B) Immediately increasing the percentage of oxygen to 100%
C) Verbally and physically stimulating the patient
D) Decreasing the nitrous oxide 20% while increasing the oxygen by the same amount
E) Both a and c

Question 5

Light anesthesia rather than relative analgesia may be indicated by:
1) hyperresponsiveness to stimuli.
2) relaxation.
3) exaggerated inspiration.
4) eyelids not resisting opening.

A) 1 and 2
B) 2 and 4
C) 1 and 3
D) 3 and 4
E) All of the above

Question 6

Objective signs of a desirable level of sedation are:
1) normal eye reaction and pupil size.
2) normal blood pressure and pulse.
3) no loss of gag reflex.
4) ability to answer questions.
5) relaxed hands, fingers, and mandible.

A) 1, 2, 3, 4
B) 1, 3, 4, 5
C) 1, 2, 4, 5
D) 2, 3, 4, 5
E) All of the above

Question 7

After the administration of nitrous oxide-oxygen analgesia, oxygen alone should be given for a minimum of _____ minutes before the patient is released.

A) 1 to 3
B) 5
C) 7 to 8
D) 10
E) 12 to 15

Question 8

The proportion of nitrous oxide the client in question 11 is receiving is which of the following?

A) 20%
B) 30%
C) 40%
D) 50%
E) None of the above

Question 9

A scavenger system incorporated into the nitrous oxide-oxygen analgesia unit does which of the following?

A) Collects nitrous oxide to be reused
B) Collects oxygen to be remixed into the reservoir bag
C) Takes out nitrous oxide that is exhaled through the mask
D) Monitors the operatory room air
E) Both a and c

Question 10

Oversedation with nitrous oxide may be manifested by which of the following?

A) Loss of consciousness
B) Allergic reaction
C) Tingling sensation
D) A slight heaviness in the client's chest
E) Both a and b

Question 11

When the proportions of nitrous oxide and oxygen are adjusted to achieve the desired level of analgesia, each adjustment should be at the rate of which of the following?

A) 0.5 L nitrous oxide for at least 30 seconds
B) 0.5 to 1 L nitrous oxide for at least 1 minute
C) 1 L nitrous oxide for at least 30 seconds
D) 1 to 1.5 L nitrous oxide for at least 1 minute
E) 1.5 L nitrous oxide for at least 30 seconds

Question 12

The proportion of oxygen the client in question 11 is receiving is which of the following?

A) 10%
B) 20%
C) 30%
D) 50%
E) 60%

Question 13

Contraindications for nitrous oxide-oxygen analgesia include:
1) breathing difficulties.
2) communication problems with the patient.
3) patient dislike of "laughing gas."
4) emotional instability.
5) hypertension.
6) early pregnancy.

A) 1, 2, 4, 5, 6
B) 1, 3, 4, 5, 6
C) 1, 2, 3, 4, 5
D) 1, 2, 3, 4, 6
E) All of the above

Question 14

Headache, grogginess, and a "hung-over" feeling after nitrous oxide-oxygen analgesia are symptoms of which of the following?

A) Polyerythemia vera
B) Overdose of oral medications
C) Diffusion hypoxia
D) Postural hypotension
E) None of the above

Question 15

Nausea after nitrous oxide exposure may occur as a result of which of the following?

A) Titrating the levels of nitrous oxide delivered
B) Overoxygenating at the end of the appointment
C) Seesawing the nitrous oxide delivery
D) Turning off the nitrous oxide too quickly
E) All of the above