The student nurse learns that the hormone necessary for milk production is

Estrogen.

Prolactin.

Progesterone.

Lactogen.

Answer and Explanation

The Correct Answer is B

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.

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Correct Answer is D

Explanation

Choice A reason:

10% to 15% of their birth weight. This is incorrect because this range is too high for a normal newborn weight loss. Losing more than 10% of their birth weight may indicate dehydration, inadequate feeding, or other problems. • Choice B reason:

20% of their birth weight. This is incorrect because this percentage is way too high for a normal newborn weight loss. Losing 20% of their birth weight would be a serious sign of illness or malnutrition. • Choice C reason:

15% to 18% of their birth weight. This is incorrect because this range is also too high for a normal newborn weight loss. Losing 15% to 18% of their birth weight would be a cause for concern and require further evaluation. • Choice D reason:

5% to 10% of their birth weight. This is correct because this range is within the normal limits for a newborn weight loss. Newborns lose some weight as a result of insufficient caloric intake, fluid loss, and metabolic adjustments in the first week after birth. They usually regain their birth weight by the second week.

A. A woman in early labor with contractions every 5 minutes lasting 40 seconds each. B. A woman in active labor with contractions every 30 minutes lasting 60 seconds each. C. A woman in active labor with contractions every 2 to 3 minutes lasting 70 to 80 seconds each. D. A woman in transition with contractions every 1.5 minutes lasting 95 seconds each.

Correct Answer is D

Explanation

Choice A reason:

The woman in early labor with contractions every 5 minutes lasting 40 seconds each does not require the immediate discontinuation of the oxytocin (Pitocin) infusion. Early labor is characterized by mild and infrequent contractions as the cervix begins to dilate and efface. Choice B reason:

The woman in active labor with contractions every 30 minutes lasting 60 seconds each also does not warrant immediate discontinuation of the oxytocin (Pitocin) infusion. Active labor typically involves regular and stronger contractions as the cervix continues to dilate and the baby progresses downward.

Choice C reason:

The woman in active labor with contractions every 2 to 3 minutes lasting 70 to 80 seconds each does not require immediate cessation of the oxytocin (Pitocin) infusion. These contractions are within the expected range for active labor and may be considered normal.

Choice D reason:

The woman in transition with contractions every 1.5 minutes lasting 95 seconds each should have the oxytocin (Pitocin) infusion discontinued immediately. Transition is the most intense phase of labor, characterized by rapid and strong contractions as the cervix completes dilation. Prolonged and frequent contractions during this phase can lead to uterine hyperstimulation, which can compromise fetal oxygenation and result in fetal distress. Discontinuing the oxytocin infusion is necessary to reduce the intensity and frequency of contractions, ensuring better fetal well-being during this critical phase of labor.

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The student nurse learns that the hormone necessary for milk production is

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A mother is upset because her newborn has lost 6 ounces since birth 2 days ago. The nurse informs the mother that it is normal for a newborn to lose which percentage of their birth weight within the first week of life?

Correct Answer is D

Explanation

For which patient should the oxytocin (Pitocin) infusion be discontinued immediately?

Correct Answer is D

Explanation

A woman gave birth vaginally to a 9-pound, 12-ounce girl yesterday. Her primary health care provider has written orders for perineal ice packs, use of a sitz bath tid, and a stool softener. What information is most closely correlated with these orders?

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Choose the sign or symptom that a new mother should be taught to report:

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While assisting with a vacuum extraction birth, what should the nurse immediately report to the physician?

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