Nitrous Oxide Sedation: A Basic Review

~ Exam ~

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1. Nitrous oxide produces the following effects:

  a. analgesic

  b. anxiolytic

  c. A only

  d. A & B

2. The “discoverer of anesthesia” is considered to be:

  a. Dr. Blackwell

  b. Gardner Quincy Colton

  c. Dr. Horace Wells

  d. John Mankey Riggs

3. A standard mixture of nitrous oxide and oxygen which is administered to patients to achieve comfort during dental treatment, consists of:

  a. 5% nitrous and 95% oxygen

  b. 40% to 70 % nitrous oxide gas with the remainder oxygen

  c. 70% nitrous and three liters per minute oxygen

  d. ED50 for general anesthesia

4. Contraindications for use of nitrous oxide would be patients with:

  a. treatment with bleomycin sulfate

  b. suspected B12 deficiency

  c. first trimester of pregnancy

  d. all of the above

5. Review of a patient’s medical history prior to administration of nitrous oxide should include all of the following, except:

  a. allergies or drug reactions

  b. current medications

  c. recent vaccinations

  d. diseases, disorders, and pregnancy status

6. In a dental operatory, a scavenging system is part of a ____________ evacuation system used with a dental unit.

  a. high-volume

  b. voluntary

  c. low-volume

  d. OSHA

7. Nitrous oxide machines should be checked:

  a. weekly

  b. monthly

  c. daily

  d. daily and when a cylinder is changed

8. During administration of nitrous oxide a patient should be monitored:

  a. for response to commands

  b. with a pulse oximeter to measure oxygen saturation

  c. color and respiratory rate

  d. all of the above

9. To prevent post-inhalation hypoxia, a patient is administered:

  a. oxygen and epinephrine

  b. 100% oxygen for at least 5 minutes

  c. a slow decrease of nitrous oxide, then 70% oxygen for at least 5 minutes

  d. desaturated oxygen

10. Guidelines for monitoring exposure in the workplace to nitrous oxide are provided by:

  a. the supervising dentist

  b. NIOSH and OSHA

  c. American Conference of Industrial Hygienists (ACGIH)

  d. B and C