A nurse is caring for a client who is a primigravida, at term, and having contractions but is stating that she is "not really sure if she is in labor or not.”. Which of the following should the nurse recognize as a sign of true labor?

Choice A reason:

While hypoglycemia (glucose <45 mg/dL) is concerning,58 mg/dLis within acceptable ranges for many institutions, especially in asymptomatic newborns. Monitoring is required, but it is less urgent than respiratory distress.

Choice B reason:

Respiratory rate of 78 breaths per minute is also within the normal range for a newborn, which typically ranges from 30 to 60 breaths per minute. Though respiratory rate is essential to assess, it does not take priority over other critical issues.

Choice C reason:

Newborns typically have a normal respiratory rate of30-60 breaths/minute. A rate of78indicatessignificant tachypnea, which could signal respiratory distress (e.g., transient tachypnea of the newborn, infection, or respiratory distress syndrome). Rapid breathing can lead to fatigue, hypoxia, or respiratory failure if not promptly addressed.

Choice D reason:

A glucose reading of 58 mg/dL is concerning in a newborn. Hypoglycemia (low blood glucose) can lead to serious complications if not promptly addressed. Newborns are particularly susceptible to hypoglycemia, and it requires immediate assessment and intervention.

The correct answer is choice B. Prolactin.

Choice A reason:

Estrogen. Estrogen is a hormone that plays a role in the development of the mammary glands and the ductal system during pregnancy. However, estrogen does not directly produce milk.

In fact, high levels of estrogen during pregnancy inhibit milk secretion by blocking prolactin. Therefore, estrogen is not the hormone necessary for milk production. • Choice B reason:

Prolactin. Prolactin is the hormone responsible for the production of breast milk. Prolactin is secreted by the pituitary gland in response to suckling or nipple stimulation. Prolactin levels rise during pregnancy and peak after delivery, when the sudden drop in estrogen and progesterone allows prolactin to take over and initiate lactation. Therefore, prolactin is the hormone necessary for milk production. • Choice C reason:

Progesterone. Progesterone is a hormone that also contributes to the development of the mammary glands and the alveoli during pregnancy. However, like estrogen, progesterone does not directly produce milk. Progesterone also inhibits milk secretion by blocking prolactin during pregnancy. Therefore, progesterone is not the hormone necessary for milk production. •

Choice D reason:

Lactogen. Lactogen is not a hormone, but a general term for any substance that stimulates lactation. There are different types of lactogens, such as human placental lactogen (hPL), which is produced by the placenta during pregnancy and has some lactogenic effects on the mammary glands. However, hPL is not the main hormone responsible for milk production. That role belongs to prolactin. Therefore, lactogen is not the hormone necessary for milk production.