Question 1

What is the first thing to do when a patient reports feeling no sedation effects with 50% N2O flow?

Accepted Answer

A)  Check the patient's breathing 
B)  Check the fit of the nose hood 
C)  Replace the empty N2O tank 
D)  Increase the flow of N2O by 5% until optimum sedation is established 
A)  Check the patient's breathing 
B)  Check the fit of the nose hood 
C)  Replace the empty N2O tank 
D)  Increase the flow of N2O by 5% until optimum sedation is established

Question 2

Why is oxygen delivered to patients for 3-5 minutes after sedation is completed?

Accepted Answer

A)  Prevent diffusion hypoxia 
B)  Prevent nausea and vomiting 
C)  Determine how long it takes the patient to return to normal wakefulness 
D)  Provide time for reflexes to return to normal 
A)  Prevent diffusion hypoxia 
B)  Prevent nausea and vomiting 
C)  Determine how long it takes the patient to return to normal wakefulness 
D)  Provide time for reflexes to return to normal

Question 3

Nitrous oxide-oxygen sedation has a positive effect on myocardial ischemia due to its provision of supplemental oxygen, sedative properties, and tendency to dilate peripheral vessels.

Accepted Answer

A) True 
 B)False

Question 4

A 31-year-old female presented to the emergency room with a 4-month history of imbalance, limb weakness, and numbness and tingling from her toes to her waist as well as in the hands. She desired immediate medical attention after awakening with complete numbness from the chest to the toes. Physical examination showed decreased pinprick and light touch response from her waist to her toes as well as to her hands. Vibration sensation was also diminished in the feet and hands. Motor examination demonstrated generally decreased strength in all extremities. Magnetic resonance imaging (MRI) revealed no abnormalities although the posterior spinal columns demonstrated increased signal. Standard lab values were normal. The patient did not immediately disclose NS1U1B12S1U1B0O abuse; however, prior to additional testing the patient admitted to regularly abusing NS1U1B12S1U1B0O via a NS1U1B12S1U1B0O machine. Over the last 2 years, she admitted to using NS1U1B12S1U1B0O for 1-2 hour sessions several times a week.
-What is the recommended treatment for this individual?

Accepted Answer

This individual should be trea

Question 5

Which of the following adverse events does not occur during N2O-O2 sedation?

Accepted Answer

A)  Nausea and vomiting 
B)  Sweating 
C)  Unresponsiveness 
D)  Constricted pupils 
A)  Nausea and vomiting 
B)  Sweating 
C)  Unresponsiveness 
D)  Constricted pupils

Question 6

What is the first step a clinician should take when mild over-sedation is observed?

Accepted Answer

A)  Check for properly functioning equipment 
B)  Remove the nasal hood 
C)  Decrease the N2O concentration 
D)  Check the oxygen tank to be sure it has an adequate supply of oxygen 
A)  Check for properly functioning equipment 
B)  Remove the nasal hood 
C)  Decrease the N2O concentration 
D)  Check the oxygen tank to be sure it has an adequate supply of oxygen

Question 7

Which of the following is not a purpose of a manifold in central supply delivery systems?

Accepted Answer

A)  Allows connections for multiple tanks in up to 10 rooms 
B)  Connects the gas supply to a central system 
C)  Allows full tanks to be accessed once other tanks are empty 
D)  Provides a scavenger system for up to 10 rooms 
A)  Allows connections for multiple tanks in up to 10 rooms 
B)  Connects the gas supply to a central system 
C)  Allows full tanks to be accessed once other tanks are empty 
D)  Provides a scavenger system for up to 10 rooms

Question 8

Nitrous oxide is manufactured from:

Accepted Answer

A)  Ammonium dioxide 
B)  Ammonium chloride 
C)  Ammonium nitrate 
D)  Ammonium chlorohydrate 
A)  Ammonium dioxide 
B)  Ammonium chloride 
C)  Ammonium nitrate 
D)  Ammonium chlorohydrate

Question 9

Which of the following explains why copper tubing is required in central supply delivery systems?

Accepted Answer

A)  It reduces the overall cost of installation 
B)  It is color coded to prevent accidental connection to the nitrous cylinders 
C)  It does not support combustion 
D)  It avoids the necessity of certified technicians to perform maintenance 
A)  It reduces the overall cost of installation 
B)  It is color coded to prevent accidental connection to the nitrous cylinders 
C)  It does not support combustion 
D)  It avoids the necessity of certified technicians to perform maintenance

Question 10

What is the percentage of N2O a patient receives when 1.5 liters of N2O are delivered per minute with a total flow rate of 5 liters per minute?

Accepted Answer

A)  3% 
B)  7.5% 
C)  12% 
D)  30% 
A)  3% 
B)  7.5% 
C)  12% 
D)  30%

Question 11

Most patients will achieve the desired clinical level of sedation at what percent of N2O?

Accepted Answer

A)  10 - 20 % 
B)  15-20% 
C)  15-40% 
D)  50-70% 
A)  10 - 20 % 
B)  15-20% 
C)  15-40% 
D)  50-70%

Question 12

A 31-year-old female presented to the emergency room with a 4-month history of imbalance, limb weakness, and numbness and tingling from her toes to her waist as well as in the hands. She desired immediate medical attention after awakening with complete numbness from the chest to the toes. Physical examination showed decreased pinprick and light touch response from her waist to her toes as well as to her hands. Vibration sensation was also diminished in the feet and hands. Motor examination demonstrated generally decreased strength in all extremities. Magnetic resonance imaging (MRI) revealed no abnormalities although the posterior spinal columns demonstrated increased signal. Standard lab values were normal. The patient did not immediately disclose NS1U1B12S1U1B0O abuse; however, prior to additional testing the patient admitted to regularly abusing NS1U1B12S1U1B0O via a NS1U1B12S1U1B0O machine. Over the last 2 years, she admitted to using NS1U1B12S1U1B0O for 1-2 hour sessions several times a week.
-Discuss signs that could have alerted colleagues that this individual might have been abusing nitrous-oxide in the office.

Accepted Answer

Clinicians or employees who ar

Question 13

Which of the following patient conditions is not an absolute contraindication for the use of N2O-oxygen sedation?

Accepted Answer

A)  Recovering alcoholic 
B)  Acute respiratory infection 
C)  Severe chronic obstructive pulmonary disease 
D)  Severe psychosis 
A)  Recovering alcoholic 
B)  Acute respiratory infection 
C)  Severe chronic obstructive pulmonary disease 
D)  Severe psychosis

Question 14

Which of the following are properties of oxygen?

Accepted Answer

A)  Odorless, colorless, tasteless gas that supports combustion 
B)  Odorless, colorless, sweet tasting gas that is flammable 
C)  Sweet smelling, colorless gas that is supports combustion 
D)  Sweet smelling, colorless gas that is flammable 
A)  Odorless, colorless, tasteless gas that supports combustion 
B)  Odorless, colorless, sweet tasting gas that is flammable 
C)  Sweet smelling, colorless gas that is supports combustion 
D)  Sweet smelling, colorless gas that is flammable

Question 15

Which of the following is not a potential symptom of chronic N2O abuse?

Accepted Answer

A)  Vitamin D deficiency 
B)  Neurologic disorders 
C)  Megablastic anemia 
D)  Reproductive difficulty 
A)  Vitamin D deficiency 
B)  Neurologic disorders 
C)  Megablastic anemia 
D)  Reproductive difficulty

Question 16

What will the gauge on an oxygen tank read when it is full?

Accepted Answer

A)  2200 psi 
B)  1100 psi 
C)  750 psi 
D)  32 psi 
A)  2200 psi 
B)  1100 psi 
C)  750 psi 
D)  32 psi

Question 17

How many liters of air does a healthy adult inhale per minute?

Accepted Answer

A)  2-3 
B)  3-5 
C)  5-7 
D)  9-12 
A)  2-3 
B)  3-5 
C)  5-7 
D)  9-12

Question 18

What is the percentage of oxygen a patient receives when 5.5 liters of oxygen and 3 liters of N2O are delivered per minute?

Accepted Answer

A)  6.4% 
B)  15% 
C)  47% 
D)  64% 
A)  6.4% 
B)  15% 
C)  47% 
D)  64%

Question 19

What is the percentage of oxygen a patient receives when 4 liters of oxygen and 2 liters of N2O are delivered per minute?

Accepted Answer

A)  6% 
B)  16% 
C)  50% 
D)  66% 
A)  6% 
B)  16% 
C)  50% 
D)  66%

Question 20

How long is oxygen administered at the completion of sedation?

Accepted Answer

A)  1 minute 
B)  2 to 5 minutes 
C)  3 to 5 minutes 
D)  5 to 8 minutes 
A)  1 minute 
B)  2 to 5 minutes 
C)  3 to 5 minutes 
D)  5 to 8 minutes

What is the first thing to do when a patient reports feeling no sedation effects with 50% N₂O flow?

Why is oxygen delivered to patients for 3-5 minutes after sedation is completed?

Nitrous oxide-oxygen sedation has a positive effect on myocardial ischemia due to its provision of supplemental oxygen, sedative properties, and tendency to dilate peripheral vessels.

Which of the following adverse events does not occur during N₂O-O₂ sedation?

What is the first step a clinician should take when mild over-sedation is observed?

Which of the following is not a purpose of a manifold in central supply delivery systems?

Nitrous oxide is manufactured from:

Which of the following explains why copper tubing is required in central supply delivery systems?

What is the percentage of N₂O a patient receives when 1.5 liters of N₂O are delivered per minute with a total flow rate of 5 liters per minute?

Most patients will achieve the desired clinical level of sedation at what percent of N₂O?

Which of the following patient conditions is not an absolute contraindication for the use of N2O-oxygen sedation?

Which of the following are properties of oxygen?

Which of the following is not a potential symptom of chronic N₂O abuse?

What will the gauge on an oxygen tank read when it is full?

How many liters of air does a healthy adult inhale per minute?

What is the percentage of oxygen a patient receives when 5.5 liters of oxygen and 3 liters of N₂O are delivered per minute?

What is the percentage of oxygen a patient receives when 4 liters of oxygen and 2 liters of N₂O are delivered per minute?

How long is oxygen administered at the completion of sedation?

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Exam 21: Fundamentals for the Administration of N2O-Oxygen Sedation

What is the first thing to do when a patient reports feeling no sedation effects with 50% N2O flow?

Why is oxygen delivered to patients for 3-5 minutes after sedation is completed?

Nitrous oxide-oxygen sedation has a positive effect on myocardial ischemia due to its provision of supplemental oxygen, sedative properties, and tendency to dilate peripheral vessels.

Which of the following adverse events does not occur during N2O-O2 sedation?

What is the first step a clinician should take when mild over-sedation is observed?

Which of the following is not a purpose of a manifold in central supply delivery systems?

Nitrous oxide is manufactured from:

Which of the following explains why copper tubing is required in central supply delivery systems?

What is the percentage of N2O a patient receives when 1.5 liters of N2O are delivered per minute with a total flow rate of 5 liters per minute?

Most patients will achieve the desired clinical level of sedation at what percent of N2O?

Which of the following patient conditions is not an absolute contraindication for the use of N2O-oxygen sedation?

Which of the following are properties of oxygen?

Which of the following is not a potential symptom of chronic N2O abuse?

What will the gauge on an oxygen tank read when it is full?

How many liters of air does a healthy adult inhale per minute?

What is the percentage of oxygen a patient receives when 5.5 liters of oxygen and 3 liters of N2O are delivered per minute?

What is the percentage of oxygen a patient receives when 4 liters of oxygen and 2 liters of N2O are delivered per minute?

How long is oxygen administered at the completion of sedation?

Perspectives on Local Anesthesia for Dental Professionals

Fundamentals of Pain Management

The Neuroanatomy and Neurophysiology of Pain Control

Pharmacology Basics

Dental Local Anesthetic Drugs

Vasoconstrictors in Dentistry

Dose Calculations for Local Anesthetic Solutions

Topical Anesthetics

Local Anesthetic Delivery Devices

Patient Assessment for Local Anesthesia

Fundamentals for Administration of Local Anesthetic Agents

Injections for Maxillary Pain Control

Injections for Palatal Pain Control

Injections for Mandibular Pain Control

Supplemental Techniques and Adjunctive Strategies

Troubleshooting Inadequate Anesthesia

Local Anesthesia Complications and Management

Insights for the Fearful Patient

Insights From Pedodontics

Insights From Specialties: Oral Surgery, Periodontics, and Endodontics

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What is the first thing to do when a patient reports feeling no sedation effects with 50% N₂O flow?

Which of the following adverse events does not occur during N₂O-O₂ sedation?

What is the percentage of N₂O a patient receives when 1.5 liters of N₂O are delivered per minute with a total flow rate of 5 liters per minute?

Most patients will achieve the desired clinical level of sedation at what percent of N₂O?

Which of the following is not a potential symptom of chronic N₂O abuse?

What is the percentage of oxygen a patient receives when 5.5 liters of oxygen and 3 liters of N₂O are delivered per minute?

What is the percentage of oxygen a patient receives when 4 liters of oxygen and 2 liters of N₂O are delivered per minute?