DAANCE Pharmacology 4

Question 1

Which opioid analgesic is most commonly used as a component of balanced anesthesia in dental sedation due to its rapid onset and short duration?

Accepted Answer

Fentanyl

Answer

Fentanyl is preferred for dental sedation because of its rapid onset (1-2 minutes) and relatively short duration (30-60 minutes), making it ideal for titration.

Question 2

A patient receiving nitrous oxide/oxygen sedation suddenly develops hypoxia. The MOST appropriate immediate action is to:

Accepted Answer

Administer 100% oxygen and discontinue nitrous oxide

Answer

When hypoxia occurs during N2O sedation, 100% oxygen must be administered immediately and nitrous oxide discontinued to prevent diffusion hypoxia and restore adequate oxygenation.

Question 3

Midazolam produces anterograde amnesia primarily by acting on which receptor type?

Accepted Answer

GABA-A receptors

Answer

Midazolam enhances GABA-A receptor chloride ion conductance, producing CNS depression, anxiolysis, and anterograde amnesia.

Question 4

Which drug is classified as an alpha-2 adrenergic agonist and is sometimes used as an adjunct in sedation for its anxiolytic and analgesic-sparing properties?

Accepted Answer

Dexmedetomidine

Answer

Dexmedetomidine is a highly selective alpha-2 adrenergic agonist that provides sedation, anxiolysis, and analgesia with minimal respiratory depression.

Question 5

The maximum recommended dose of lidocaine WITH epinephrine for a healthy adult dental patient is:

Accepted Answer

7 mg/kg up to 500 mg

Answer

Lidocaine with epinephrine has a maximum dose of 7 mg/kg, not to exceed 500 mg in a healthy adult, because epinephrine reduces systemic absorption.

DAANCE - Dental Anesthesia Assistant National Certification Examination Practice Test

DAANCE - Dental Anesthesia Assistant National Certification Examination Practice Test

DAANCE Pharmacology 4