Which safety concerns are increased in elderly patients taking benzodiazepines or Z-drugs?

• A. Cognitive impairment, delirium, falls, and daytime sedation; some agents have longer half-lives.
• B. No special considerations; elderly tolerate hypnotics equally well.
• C. Only sleep latency is affected; no cognitive effects.
• D. They are preferred in the elderly due to short half-lives.

Answer: (A)

In older adults, the brain is more sensitive to the calming and memory-impairing effects of benzodiazepines and Z-drugs, and the body clears these drugs more slowly. This combination leads to lingering daytime sedation, slower thinking, and impaired balance, which translates into higher risks of delirium and falls. Because some of these agents have longer half-lives in the elderly, they can accumulate with regular use, worsening these safety concerns. So the pattern of cognitive impairment, delirium, falls, and daytime sedation—driven by altered pharmacokinetics and increased CNS sensitivity—best captures why these medications are riskier for older patients. Other choices miss these broad safety issues or imply elderly tolerance without acknowledging the real risks.