A nurse is preparing to assist with a procedure that requires moderate (conscious) sedation. Which of the following medications should the nurse expect to be prescribed to sedate the client?

A. Cyclobenzaprine is a muscle relaxant, not used for sedation. B. Lidocaine is a local anesthetic, not a sedative. C. Atropine is an anticholinergic used to decrease secretions or treat bradycardia. D. Midazolam is a benzodiazepine commonly used for moderate sedation due to its anxiolytic, amnestic, and sedative properties.