PTCB Pharmacology for Technicians 2

Question 1

Which drug interaction occurs between warfarin and vitamin K?

Accepted Answer

Antagonistic — vitamin K reduces warfarin's effectiveness

Answer

Synergistic — increases anticoagulation

Answer

Additive — equal effects

Answer

Potentiation — vitamin K increases INR

Question 2

What is the term for the time it takes for a drug's plasma concentration to decrease by 50%?

Accepted Answer

Half-life

Answer

Peak time

Answer

Onset of action

Answer

Duration of action

Question 3

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

Accepted Answer

Osteoporosis

Answer

Hypoglycemia

Answer

Hyperkalemia

Answer

Hypothyroidism

Question 4

Insulin glargine is classified as which type of insulin?

Accepted Answer

Long-acting (basal)

Answer

Rapid-acting

Answer

Short-acting (regular)

Answer

Intermediate-acting (NPH)

Question 5

Which drug class can cause photosensitivity as a side effect?

Accepted Answer

Tetracycline antibiotics

Answer

Beta-blockers

Answer

ACE inhibitors

Answer

Calcium channel blockers

Question 6

What is the mechanism of action of benzodiazepines?

Accepted Answer

Enhance GABA activity in the CNS

Answer

Block dopamine receptors

Answer

Inhibit serotonin reuptake

Answer

Block NMDA receptors