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Flashcards in Chapter 32 Deck (25)
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1

Why is it important to know your patients tidal volume?

It determines the amount of flow necessary to maintain patient comfort during respiration

2

Nitrous oxide is pressurized at

750 psi

3

A nitrous oxide cylinder will be cool to the touch. The amount of gas in the cylinder can be monitored by checking the dial indicator.

The first statement is correct, the second statement is incorrect

4

Select the phrases that describe appropriate N20/02 sedation

-The patient’s heart rate slows
-Blood pressure decreases
-Patient has control of cough/gag

5

After a patient uses nitrous oxide/oxygen sedation, it is advised to administer 100% oxygen post operatively. For how many minutes should oxygen be administered?

5 minutes

6

Nitrous oxide is metabolized in the liver; therefore, patients with hepatitis should not receive nitrous oxide/oxygen sedation

Both the statement and the reason are incorrect

7

Which term describes administering a drug in incremental doses over a period of time until a desired endpoint is reached?

Titration

8

Some machines have floating balls within tubes to show when gas is flowing. How is the actual percentage of nitrous oxide calculated?

By dividing the N2O L/ min by the total liters per minute

9

During administration of nitrous oxide/oxygen sedation, the reservoir bag should be kept one- third full. If the bag overinflates, there is an excessive and unnecessary amount of gas flow

The first statement is false, the second statement is true

10

The purpose of the flowmeter is to

Mix and adjust nitrous oxide and oxygen

11

What is the lung capacity of an average adult?

500 mL

12

Which component decreases the pressure of the gas from the tank?

Regulator

13

The majority of contraindications for use of nitrous oxide/oxygen sedation are relatively uncommon. However, there are situations in which the procedure should be postponed or medical consultation is recommended

Both statements are correct

14

What is the minute volume for the average adult?

6 to 7 L/min

15

All of the following are reasons for oversedation except for one. Which one is the exception?

The operator administers the drug in increments

16

Which of these patients is a candidate for nitrous oxide/oxygen sedation

Patient diagnosed with hypertension

17

Nitrous oxide is stored as a liquid in blue cylinders. Nitrous oxide is lighter than air.

The first statement is correct, the second statement is incorrect

18

Oxygen is pressurized at

2000 psi

19

The person responsible for assessing the adequacy of patient recovery following N2O/O2 sedation is the

Person administering the drug

20

N2O/O2 has significant negative affects on the —— system

None of these are correct

21

The reduction of pressure from the cylinder to an appropriate level for patient inhalation is accomplished by the

Regulator

22

The dentist who has posthumously been recognized as the father of anesthesia due to his clinical use of nitrous oxide is

Horace Wells

23

All of the following are relative contraindications of N2O/O2 except which one?

Hypersensitive gag reflex

24

Nitrous oxide administration is contraindicated for people with compromised liver function, hepatitis, or any other condition affecting the liver because the drug is not metabolized in the liver, but it quickly the fuses out of the body through the lungs

First statement is false, second statement is true

25

What feature prevents the inadvertent flow of 100% nitrous oxide if the oxygen source is depleted?

Oxygen fail safe system