Relias RN Pharmacology Test A | Questions & Answers with Rationales | Nursing Pharmacology Study Guide

RELIAS RN x




Pharmacology Test A | Questions & Answers with x x x x x x x




Rationales | Nursing Pharmacology Study Guide
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THIS EXAM INCLUDES: x x




• RN Pharmacology Test A practice questions
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• Answers for self-assessment
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• Detailed rationales and explanations
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• Medication-class review
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• Nursing interventions and precautions
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• Clinical application questions
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• Pharmacology exam preparation
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• Comprehensive nursing review
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, Relias RN Pharmacology Test A | Questions & Answers with
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Rationales | Nursing Pharmacology Study Guide
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1. What medication is a leukotriene receptor antagonist?
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A. Montelukast
x




B. Albuterol
x




C. Prednisone
x




D. Theophylline
x




Answer: A x




Rationale: Montelukast (Singulair) is a leukotriene receptor antagonist used
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in the management of asthma and allergic rhinitis. It works by blocking
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leukotrienes, which are inflammatory mediators that cause
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bronchoconstriction, mucus secretion, and airway edema. Albuterol is a
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beta-2 agonist, prednisone is a corticosteroid, and theophylline is a
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methylxanthine.
x




2. Which statement made by a person regarding hydrochlorothiazide
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x (HCTZ) is correct? x x




A. "I should take extra care when standing up or changing positions."
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B. "I can stop taking this medication when my blood pressure is normal."
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C. "I should take this medication at bedtime."
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D. "This medication will increase my potassium levels."
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Answer: A x




Rationale: Hydrochlorothiazide is a thiazide diuretic that can cause
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,orthostatic hypotension due to volume depletion. Patients should be
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instructed to rise slowly from sitting or lying positions to prevent dizziness
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and falls. HCTZ does not increase potassium; it can cause hypokalemia. It
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should be taken in the morning to avoid nocturia.
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3. A 250mg dose of an oral medication has been ordered. The
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x medication is supplied only in 100mg tablets. How many tablets
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x would you administer?x x




A. 2 tablets
x x




B. 2.5 tablets
x x




C. 3 tablets
x x




D. 2.25 tablets
x x




Answer: B x




Rationale: 250 mg ÷ 100 mg per tablet = 2.5 tablets. The nurse should
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administer two and one-half tablets. When possible, the nurse should
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confirm with pharmacy if a different strength is available to avoid splitting
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tablets.
x




4. What medication is considered a potassium-sparing diuretic?
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A. Furosemide (Lasix)
x x




B. Hydrochlorothiazide (HCTZ)
x x




C. Spironolactone (Aldactone)
x x




D. Bumetanide (Bumex)
x x




Answer: C x




Rationale: Spironolactone (Aldactone) is a potassium-sparing diuretic that
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, works by blocking aldosterone in the distal convoluted tubule, promoting
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sodium and water excretion while conserving potassium. Furosemide, HCTZ,
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and bumetanide all cause potassium loss.
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5. You receive report from the off-going nurse that the person being
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x cared for just received their fourth dose of IV vancomycin that was
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x administered over 30 minutes. Upon assessment of them, you notice x x x x x x x x x




x their face and neck are red and they are itching all over. What would
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x you suspect?
x




A. Anaphylactic reaction
x x




B. Red man syndrome due to a rapid infusion rate
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C. Stevens-Johnson syndrome
x x




D. Serum sickness
x x




Answer: B x




Rationale: Red man syndrome is a histamine-mediated reaction to rapid
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infusion of vancomycin, characterized by flushing, erythema, and pruritus of
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the face, neck, and upper torso. It is not a true allergic reaction. Prevention
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includes infusing vancomycin over at least 60 minutes. The symptoms
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should resolve with slowing the infusion or administering antihistamines.
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6. Sildenafil (Viagra) is prescribed to treat a patient with erectile
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x dysfunction. A nurse reviews the patient's medical record and would
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x question the prescription if which of the following is noted in the
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x history?