A nurse is reinforcing teaching about preterm labor with a client who is at 28 weeks of gestation. Which of the following statements by the client indicates an understanding of the teaching?

(A) Prepare the client for an abdominal sonogram:
An abdominal sonogram is not relevant for diagnosing or treating mastitis, which is an infection of the breast tissue. Mastitis typically requires assessment of the breast and possibly a breast ultrasound if an abscess is suspected, but not an abdominal sonogram.

(B) Encourage the client to continue to breastfeed:
Continuing to breastfeed is recommended for clients with mastitis. Breastfeeding helps to drain the breast and can speed up recovery. It also helps to prevent complications such as breast abscess and supports continued milk production.

(C) Encourage the client to wear a bra that is loose fitting:
While wearing a comfortable bra is important, a loose-fitting bra may not provide the necessary support for engorged or painful breasts. A well-fitting, supportive bra is usually recommended to provide comfort without being too tight, which can exacerbate symptoms.

(D) Limit the client's daily fluid intake:
Limiting fluid intake is not recommended and is not beneficial for treating mastitis. Adequate hydration is important for overall health and helps maintain milk supply. Encouraging the client to drink plenty of fluids is essential for recovery and continued breastfeeding.

(A) Diuresis:
Diuresis, or increased urine production, is not a typical adverse effect of nalbuphine hydrochloride. Opioids generally do not affect urine output in the same way as diuretic medications.

(B) Fever:
Fever is not a common adverse effect of nalbuphine hydrochloride. If a client develops a fever during labor, it could indicate other underlying causes such as infection or inflammation, but it is not directly related to the administration of this medication.

(C) Diarrhea:
Diarrhea is not a typical adverse effect of nalbuphine hydrochloride. Opioid medications are more commonly associated with constipation due to their effects on gastrointestinal motility and function.

(D) Sedation:
Nalbuphine hydrochloride is an opioid analgesic used for pain relief during labor. Sedation is a common adverse effect of opioid medications, including nalbuphine. Opioids can depress the central nervous system, leading to drowsiness, sedation, and decreased level of consciousness. It's essential for the nurse to monitor the client closely for signs of sedation, especially during labor, to ensure the safety of both the mother and the baby.