The student nurse learns that the hormone necessary for milk production is
Estrogen.
Prolactin.
Progesterone.
Lactogen.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason:
Assisting the client on a bedpan to urinate is important for assessing urinary output and preventing bladder distension. However, in this situation, the priority is to assess and manage postpartum hemorrhage, which is indicated by the excessive bleeding.
Choice B reason:
Increasing the client's fluid intake is generally a good measure for promoting hydration and maintaining blood volume. However, it is not the priority in this scenario of excessive postpartum bleeding.
Choice C reason:
Palpating the client's uterine fundus is the priority nursing intervention at this time. The excessive bleeding indicated by saturating two perineal pads in a 30-minute period suggests postpartum hemorrhage, which can result from uterine atony (failure of the uterus to contract adequately after childbirth). Palpating the fundus allows the nurse to assess if the uterus is firm or boggy, and if it is not contracting properly, immediate interventions can be initiated to control the bleeding.
Choice D reason:
Preparing to administer oxytocic medication (such as oxytocin) can help stimulate uterine contractions and prevent or manage postpartum hemorrhage. However, the priority is to first assess the uterine fundus and confirm the cause of the excessive bleeding before administering any medication.
Correct Answer is []
Explanation
The diagram should be completed as follows:
Condition Most Likely Experiencing: B. Respiratory distress syndrome. Action to Take 1: C. Administer Surfactant as prescribed. Action to Take 2: Provide oxygen therapy as needed. Parameter to Monitor 1: B. Arterial blood gases. Parameter to Monitor 2: D. Oxygen saturation.
Conditions Explained
Choice A reason:
Hypoglycemia is a condition where the blood glucose level is too low. It can cause symptoms
such as jitteriness, lethargy, poor feeding, and seizures. However, hypoglycemia does not
explain the respiratory signs that the newborn is experiencing, such as tachypnea, grunting,
nasal flaring, and retractions. Acrocyanosis is also not a sign of hypoglycemia. Therefore,
choice A is incorrect.
Choice B reason:
Respiratory distress syndrome (RDS) is a condition where the lungs are not fully developed
and lack enough surfactant, a substance that helps the alveoli stay open and exchange
oxygen and carbon dioxide. It can cause symptoms such as tachypnea, grunting, nasal flaring,
retractions, and cyanosis. RDS is more common in premature infants, especially those born
before 37 weeks of gestation. Acrocyanosis can be a normal finding in the first 24 hours of
life, but it can also indicate poor perfusion due to respiratory compromise. Therefore, choice
B is the most likely condition that the newborn is experiencing.
Choice C reason:
Neonatal abstinence syndrome (NAS) is a condition where the newborn withdraws from
drugs that were exposed in utero. It can cause symptoms such as irritability, tremors, high-
pitched crying, poor feeding, vomiting, diarrhea, and sweating. However, NAS does not
explain the respiratory signs that the newborn is experiencing, such as tachypnea, grunting,
nasal flaring, and retractions. Acrocyanosis is also not a sign of NAS. Therefore, choice C is
incorrect.
Choice D reason:
Jaundice is a condition where the skin and sclerae turn yellow due to excess bilirubin in the
blood. It can be caused by various factors such as blood group incompatibility, hemolysis,
infection, or liver dysfunction. However, jaundice does not explain the respiratory signs that
the newborn is experiencing, such as tachypnea, grunting, nasal flaring, and retractions.
Acrocyanosis is also not a sign of jaundice.
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