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pharmacy Topic wise MCQs

Adrenergic Antagonists MCQs

Adrenergic Antagonists MCQs With Answers

1. Which adrenergic receptor antagonist is used solely for treating the prostate?
a. Prazosin.
b. Terazosin.
c. Alfuzosin.
d. Doxazosin.

2. Which adverse effect of prazosin analogues requires a regimen of small doses that gradually increase over time?
a. Xerostomia.
b. Fluid retention.
c. Postural hypotension.
d. Inoperable floppy iris syndrome.

3. Which adrenergic receptor antagonist forms covalent bonds with receptors?
a. Prazosin.
b. Tamsulosin.
c. Phentolamine.
d. Phenoxybenzamine.

4. Which adrenergic receptor antagonists are most widely prescribed in the United States?
a. Imidazolines.
b. β-haloalkylamines.
c. β-adrenergic receptor antagonists.
d. Selective α1-adrenergic receptor antagonists.

5. Which factor does NOT contribute to a β-blocker’s overall reduction in cardiac output?
a. Decreased blood flow to the heart.
b. Decreased contractile force.
c. Decreased sinoatrial node firing rate.
d. Slowed conduction of electrical impulse.

6. Which β-blocker, used to treat ventricular arrhythmias, has unique antiarrhythmic properties?
a. Sotalol.
b. Carvedilol.
c. Metoprolol.
d. Propranolol.

7. Foods containing tyramine should be avoided when taking
a. β-adrenergic receptor antagonists.
b. centrally acting adrenergic agonists.
c. monoamine oxidase (MAO) inhibitors.
d. selective α1-adrenergic receptor antagonists.

8. Which risk is posed when epinephrine is administered to a patient taking β-blockers?
a. Oral candidiasis.
b. A hypotensive episode.
c. A hypertensive episode.
d. No anesthesia is produced.

9. For which effect is a 1 to 2 week withdrawal of β-blockers recommended?
a. Hypoglycemia.
b. Cold hands and feet.
c. Bronchoconstriction.
d. β-receptor sensitivity.

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