A nurse is caring for a client who is at 32 weeks of gestation and is in labor. Which of the following medications is contraindicated for this client?

Choice A rationale: An increase in breast milk production is a normal physiological response during breastfeeding and does not indicate mastitis.
Choice B rationale: Mastitis is an inflammation of the breast tissue, usually caused by infection. It commonly occurs in breastfeeding women and is characterized by redness, warmth, swelling, and pain in one breast. The affected breast may also be tender and sore to the touch.
Choice C rationale: Swelling in both breasts is a common occurrence during the early days of breastfeeding as the milk supply adjusts to the baby's needs. It is not specific to mastitis.
Choice D rationale: Cracked and bleeding nipples can be a result of improper latch or positioning during breastfeeding, but they are not specific to mastitis.

Choice A rationale: The presence of phosphatidylglycerol (PG) in the amniotic fluid is another indicator of fetal lung maturity. The absence of PG is associated with an increased risk of respiratory distress syndrome (RDS) in the newborn.
Choice B rationale: A nonstress test is a test performed during pregnancy to evaluate the fetal heart rate in response to fetal movement. It is not directly related to assessing fetal lung maturity.
Choice C rationale: The L/S ratio is an important indicator of fetal lung maturity. Lecithin and sphingomyelin are two surfactants present in the lungs, and the ratio of these two substances increases as the fetal lungs mature. An L/S ratio of 2:1 or greater is considered an indication of lung maturity and suggests that the newborn should be able to breathe adequately after birth.
Choice D rationale: The biophysical profile (BPP) is a prenatal ultrasound assessment of the fetus, which includes evaluating fetal movements, breathing, heart rate, and amniotic fluid volume. While a BPP of 8 is a reassuring score, it does not provide direct information about fetal lung maturity.