NBCRNA Pharmacology for Nurse Anesthetists 3

Question 1

Which drug is the treatment of choice for acute malignant hyperthermia crisis?

Accepted Answer

Dantrolene

Answer

Propranolol

Answer

Bicarbonate

Answer

Calcium gluconate

Question 2

The opioid reversal agent naloxone works by which mechanism?

Accepted Answer

Competitive opioid receptor antagonism

Answer

Enzyme-mediated opioid metabolism

Answer

Allosteric GABA-A enhancement

Answer

Direct respiratory center stimulation

Question 3

Which induction agent is contraindicated in patients with porphyria?

Accepted Answer

Thiopental

Answer

Propofol

Answer

Ketamine

Answer

Etomidate

Question 4

Etomidate is preferred for induction in hemodynamically unstable patients primarily because it does what?

Accepted Answer

Minimally affects cardiovascular function

Answer

Provides profound analgesia

Answer

Blocks sympathetic nervous system

Answer

Causes bronchodilation

Question 5

Which volatile agent is most associated with compound A formation and potential nephrotoxicity, particularly at low fresh gas flows?

Accepted Answer

Sevoflurane

Answer

Desflurane

Answer

Isoflurane

Answer

Nitrous oxide

Question 6

The addition of epinephrine to local anesthetic solutions for peripheral nerve blocks primarily serves what purpose?

Accepted Answer

Prolongs duration of block by causing vasoconstriction

Answer

Reduces systemic toxicity by increasing absorption

Answer

Enhances nerve membrane penetration

Answer

Prevents allergic reactions to the local anesthetic