PTCB Practice Test: Video 1 Answers (25 Questions)

Question 1

What is the mechanism of action of benzodiazepines?

Accepted Answer

Enhance GABA activity in the CNS

Answer

Benzodiazepines enhance the effect of GABA (gamma-aminobutyric acid) at GABA-A receptors, producing sedation and anxiolysis.

Question 2

What is the main therapeutic use of digoxin?

Accepted Answer

Heart failure and atrial fibrillation

Answer

Digoxin is a cardiac glycoside used to improve myocardial contractility in heart failure and control ventricular rate in atrial fibrillation.

Question 3

Which of the following is a potential side effect of long-term corticosteroid use?

Accepted Answer

Osteoporosis

Answer

Long-term corticosteroid use can cause osteoporosis by inhibiting osteoblast activity and increasing calcium excretion.

Question 4

Which drug is the antidote for acetaminophen overdose?

Accepted Answer

N-acetylcysteine

Answer

N-acetylcysteine (Mucomyst, Acetadote) is the antidote for acetaminophen toxicity, replenishing glutathione stores to prevent liver damage.

Question 5

Patients taking MAOIs should avoid which food substance due to the risk of hypertensive crisis?

Accepted Answer

Tyramine

Answer

MAOIs inhibit the enzyme that breaks down tyramine; consuming tyramine-rich foods (aged cheeses, cured meats) can cause a dangerous hypertensive crisis.

PTCB - Pharmacy Technician Certification Board Practice Test

PTCB - Pharmacy Technician Certification Board Practice Test

PTCB Practice Test: Video 1 Answers (25 Questions)