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WorksheetsNitrous Oxide Monitoring Review
Total questions: 47
Worksheet time: 29mins
When patients must be purposefully aroused either by verbal command or with light tactile stimulation, they are in a level of ____________________. (pg. 11)
minimal sedation
moderate sedation
deep sedation/analgesia
general anesthesia
When loss of consciousness is intended with a drug, the level of sedation is defined as _________.
minimal sedation
moderate sedation/analgesia
deep sedation/analgesia
general anesthesia
All of the following are likely signs of fear except one. Which one is the exception?
Excessive talking
Arrives early to appointment
Refusal to cooperate
Cancelled appointment
All of the following are physiological signs of a person’s fear of the dental office except one. Which one is the exception?
Sobbing
Sweating
Sleeping
Shaking
All of the following statements are true regarding the topic of pain and anxiety except one. Which one is the exception?
Anxiety causes pain to be less tolerable.
An increase in pain enhances anxiety.
Various cultures express pain differently.
Pain tolerance ________ in an individual.
does not change
increases rapidly
decreases with age
varies every hour
The effects of nitrous oxide can be reversed by
naloxone.
oxygen.
a benzodiazepine.
local anesthetics.
In the presence of fear, a patient’s pain threshold likely
increases.
decreases.
While in a relaxed state using nitrous oxide/oxygen sedation, a patient will likely think time has passed by more
slowly.
quickly.
The Globally Harmonized System (GHS) hazard pictograms appropriate for nitrous oxide include a cylinder indicating compressed gas and a(n)
flame indicating its flammability.
flame over a circle indicating it is an oxidizer.
test tube spilling indicating it is corrosive.
exploding bomb indicating it is explosive.
Nitrous oxide is a relatively insoluble drug, which means the molecule (pg. 33)
A. remains unchanged in the blood.
B. breaks apart in the blood.
Nitrous oxide and oxygen cylinders are likely required by the Compressed Gas Association to be inspected every:
year
six months
two years
five years
Nitrous oxide is primarily eliminated from the body through the
liver.
skin.
urine.
lungs.
The universal color for an oxygen cylinder in the United States is
green.
white.
blue.
black.
Reducing pressure from the cylinder to an appropriate level for patient inhalation is accomplished by the
nasal hood.
non-rebreathing valve.
regulator.
An indicator that gas is flowing through the flowmeter is when
digital lights flash or balls float in the tubes.
cylinder dials move from zero.
audible alarms “beep”.
gas vapor is visible.
The oxygen fail-safe mechanism ensures that
oxygen will always flow.
oxygen will shut off on its own
The primary purpose for the oxygen flush button is to
provide oxygenation to the patient after treatment.
provide oxygen to the patient if the cylinder becomes empty during the procedure.
provide a large quantity of oxygen into the reservoir bag quickly.
flush the patient’s system with new oxygen.
Oxygen in the respiratory system enters the blood from the
alveoli.
bronchiole.
bronchi.
trachea.
Normal oxygen saturation levels seen on a pulse oximeter range from
< 74%.
85% to 88%.
90% to 93%.
96% to 99%.
Nitrous oxide is __________ for a patient in the first trimester of pregnancy.
indicated
contraindicated
Fasting is required before nitrous oxide/oxygen (N2O/O2) sedation.
True
False
It is preferable that a patient has not eaten a heavy meal, fried/fatty foods, and/or who has not had significant amounts of liquid before N2O/O2 sedation.
The first statement is true; the second statement is false.
The first statement is false; the second statement is true.
Both statements are true.
Both statements are false.
The concept of titration promotes that the amount drug delivered is of
less than what is necessary.
very close to what is necessary.
more than what is necessary.
Nitrous oxide/oxygen sedation equipment ensures the delivery of a minimum of __________ oxygen.
30%
40%
50%
60%
Documentation from the nitrous oxide/oxygen sedation experience includes each of the following except one. Which one is the exception? (pg. 124)
Percentage of drug delivered
Patient’s minute volume
Duration of drug delivered
Patient’s weight
The vital signs recommended for minimal sedation using nitrous oxide and oxygen are
blood pressure, weight, height.
age, temperature, pulse.
pulse, respiration, blood pressure.
pulse, weight, respiration.
The documented percentage of the public determined to be allergic to nitrous oxide is (pg. 81)
0%
10%
All of the following are signs/symptoms associated with a patient’s eyes during ideal nitrous oxide/oxygen sedation except one. Which one is the exception?
Less active
Slow-blinking
Glazed
Rolling
Tingling is a symptom associated with nitrous oxide/oxygen sedation. Patients will report tingling, most likely, around their mouth and in their
stomach.
back.
extremities.
eyes.
A general guideline when administering nitrous oxide/oxygen sedation for any patient is to
never leave the patient alone.
cover the patient’s head with a blanket until ready.
allow the patient to use the drug to take a nap.
allow the patient to administer the drug him/herself.
Patients experiencing signs and symptoms of ideal nitrous oxide/oxygen sedation will report as though they are feeling.
The administration of nitrous oxide/oxygen sedation by dental and medical professionals is regulated at the __________ level.
local hospital/clinic
state
national
global
Preoperative and postoperative vital signs are optional when using nitrous oxide/oxygen sedation in the dental office.
The statement is true.
The statement is false.
Informed consent should be obtained from the patient, parent or legal guardian before initiating each sedative procedure using nitrous oxide or any other drug.
The statement is true.
The statement is false.
Each of the following indicate adequate recovery of a patient following nitrous oxide/oxygen sedation except one. Which one is the exception?
Patient feels normal after 5 minutes of 100% oxygen.
Postoperative vital signs are within close range of preoperative values.
Patient indicates a lethargic feeling.
Patient indicates an altered sense of time taken for procedure.
All of the following are signs of an appropriate level of sedation using nitrous oxide/oxygen except one. Which one is the exception?
Patient is comfortably warm.
Patient smiles easily.
Patient is unable to keep mouth open.
Patient indicates tingling in extremities.
When a patient suddenly feels uncomfortable in any way during nitrous oxide/oxygen sedation, the operator should
If a patient becomes distressed during nitrous oxide administration, what should you do?
decrease the percentage of nitrous oxide being delivered to the patient.
monitor the patient for further signs of distress.
activate the emergency medical system (EMS).
It is recommended to check all conduction tubing and the reservoir bag for leaks
on a regular basis of short intervals.
once per year.
once every two years.
delete distractor.
The actual percentage of drug delivered to a patient is calculated by dividing the
amount of oxygen delivered in liters/min total flow delivered in liters/min
amount of nitrous oxide delivered in liters/min total flow delivered in liters/min
amount of nitrous oxide + oxygen delivered in liters/min total flow delivered in liters/min
amount of nitrous oxide delivered in liters/min amount of oxygen delivered in liters/min
The safety device that prevents inadvertent attachment of the nitrous oxide cylinder to the oxygen yoke on a portable unit is called the
diameter index safety system.
pin index safety system.
oxygen fail-safe system.
no-fail system.
All of the following are characteristics of nitrous oxide except one? Which one is the exception?
Lighter than air
Supports combustion
Slight sweet smell
Colorless
All of the following indicates an excess of gas is flowing to the patient except one. Which one is the exception?
A. A hissing noise comes out of the nasal hood.
B. The patient’s eyelids flutter.
C. The reservoir bag collapses.
Hydrocarbons such as oil, grease, or other lubricants should not be used near valves, gauges, regulators, or any fittings on nitrous oxide/oxygen equipment because they may cause
leaking of the gas cylinder.
malfunctioning of the regulator.
an explosion.
rusting inside the gauges.
All of the following are relative contraindications for nitrous oxide/oxygen sedation except one. Which one is the exception?
Hypersensitive gag reflex
Severely claustrophobic patients
Current upper respiratory infection
First trimester of pregnancy
Alcohol intoxication or drug use
The impact that nitrous oxide/oxygen sedation has on the cardiovascular system is likely
supportive and enhancing.
to cause a stroke.
to interfere with digestion.
