Pharmacology Drug Classifications and Prototypes 5

Question 1

A patient receives protamine sulfate after heparin overdose. What drug class does heparin belong to?

Accepted Answer

Parenteral anticoagulants (unfractionated heparin)

Answer

Unfractionated heparin is the prototype parenteral anticoagulant, enhancing antithrombin III activity to inhibit thrombin and factor Xa; its antidote is protamine sulfate.

Question 2

Ethosuximide is the prototype drug used specifically for which seizure type?

Accepted Answer

Absence (petit mal) seizures

Answer

Ethosuximide is the prototype succinimide anticonvulsant, selectively treating absence seizures by blocking T-type calcium channels in thalamic neurons.

Question 3

Which drug is the prototype proton pump inhibitor (PPI)?

Accepted Answer

Omeprazole

Answer

Omeprazole is the prototype PPI, irreversibly inhibiting H+/K+-ATPase (the proton pump) in parietal cells to profoundly suppress gastric acid secretion.

Question 4

Clonidine is the prototype of which antihypertensive drug class?

Accepted Answer

Centrally acting alpha-2 agonists

Answer

Clonidine is the prototype centrally acting alpha-2 agonist, reducing sympathetic outflow from the CNS to lower blood pressure and heart rate.

Question 5

Lidocaine is the prototype of which local anesthetic drug class?

Accepted Answer

Amide-type local anesthetics

Answer

Lidocaine is the prototype amide-type local anesthetic, blocking voltage-gated sodium channels to prevent nerve impulse conduction.

Pharmacology Practice Test

Pharmacology Practice Test

Pharmacology Drug Classifications and Prototypes 5