A nurse is caring for an 82-year-old male with a history of mild kidney dysfunction who is recently admitted to the hospital for an unwitnessed fall. The nurse noted that the client had been taking cimetidine (Tagamet HB) at the maximum dosage for 2 months. Which of the following are complications of this cimetidine (Tagamet HB) that contributed to his admission? (Select All That Apply.)
Restlessness
Lethargy
Increased libido
Confusion
Correct Answer : B,D
A. Restlessness is not a common side effect of cimetidine. Neurological side effects typically involve sedation or confusion rather than hyperactivity.
B. Lethargy is a potential adverse effect of cimetidine, especially in older adults or those with renal dysfunction, due to the drug’s impact on the central nervous system.
C. Increased libido is not associated with cimetidine. In fact, it may cause decreased libido and sexual dysfunction in some cases.
D. Confusion is a known complication of cimetidine, particularly in elderly clients with impaired renal function, as the drug can accumulate in the body and affect the brain.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Sucralfate does not neutralize gastric acid; antacids are responsible for neutralization.
B. Sucralfate does not mimic endogenous prostaglandins. Medications like misoprostol act as prostaglandins to protect the stomach lining.
C. Sucralfate does not block H2 receptors. Medications like cimetidine or ranitidine work through this mechanism to reduce acid production.
D. Sucralfate creates a viscous, protective barrier that adheres to the ulcer site, shielding it from further damage by gastric acid, bile, and pepsin for up to 6 hours, thereby promoting healing.
Correct Answer is D
Explanation
A. Ondansetron agonizes serotonin receptors on afferent vagal neurons. – This is incorrect. Ondansetron works by blocking, not activating, serotonin (5-HT3) receptors in areas involved in nausea and vomiting.
B. Ondansetron agonizes serotonin receptors in the medulla oblongata. – This is incorrect. Ondansetron does not act as an agonist at serotonin receptors in the medulla oblongata; instead, it antagonizes receptors to reduce nausea.
C. Ondansetron agonizes dopaminergic receptors in the vestibular apparatus. – This is incorrect. Ondansetron does not affect dopaminergic receptors or the vestibular apparatus. Medications like promethazine address dopaminergic pathways.
D. Ondansetron blocks serotonin receptors in the chemoreceptor trigger zone. – This is correct. Ondansetron acts as a 5-HT3 receptor antagonist, blocking serotonin receptors in the chemoreceptor trigger zone and vagal nerve terminals, effectively preventing nausea and vomiting.
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