Final answer:
The medication expected to be ordered to promote bladder emptying in a client experiencing urinary retention is Bethanechol (Urecholine), a muscarinic agonist that stimulates the bladder. Anticholinergics like Oxybutynin and Propantheline are not used for this purpose, nor is the antifungal Nystatin.
Step-by-step explanation:
If the client is experiencing urinary retention, the nurse would anticipate an order for medication that promotes the emptying of the bladder. The correct choice would be B. Bethanechol (Urecholine), which is a muscarinic agonist that stimulates the detrusor muscle of the bladder, promoting micturition, or urination. Choices such as Oxybutynin chloride (Ditropan) and Propantheline (Pro-Banthine) are anticholinergics and would not be used to promote bladder emptying as they decrease bladder contractions. Nystatin (Mycostatin) is an antifungal medication and is not indicated for urinary retention.
Loop diuretics like the medication described in the reference information that work on the loop of Henle, increase urination by inhibiting the reabsorption of Na+ and Cl- ions leading to increased fluid excretion.