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 B
Explanation
A. Nalbuphine (Nubain):Nalbuphine is an opioid agonist-antagonist, which can be used to treat moderate to severe pain. However, it is not specifically used to reverse the effects of fentanyl. Administering Nalbuphine could potentially complicate the situation by introducing another opioid into the system.
B. Naloxone (Narcan):Naloxone is an opioid antagonist that rapidly reverses the effects of opioids like fentanyl. It is the standard treatment for opioid overdose and can quickly restore normal respiration in a person whose breathing has slowed or stopped due to opioid use. This makes it the most appropriate drug to have readily available in this scenario.
C. Butorphanol (Stadol):Butorphanol is another opioid agonist-antagonist used for pain relief. Similar to Nalbuphine, it is not used to reverse opioid effects and could complicate the patient's condition by adding another opioid to the system.
D. Promethazine (Phenergan):Promethazine is an antihistamine used to treat nausea, vomiting, and allergies. It does not have any properties that would counteract the effects of fentanyl. Therefore, it would not be useful in reversing opioid-induced respiratory depression.
Correct Answer is A
Explanation
Assist the client to turn onto her side. This is the correct answer because turning the client onto her side can improve blood flow to the placenta and increase fetal oxygenation. Hypotension is a common cause of decreased uteroplacental perfusion, which can lead to fetal distress and late decelerations on the fetal monitor. The nurse should also administer oxygen, increase IV fluids, and notify the provider. • Choice B reason:
Prepare for an immediate vaginal delivery. This is not the correct answer because there is no indication that the client is ready for delivery. The client has 6 cm of cervical dilation, which means she is still in the active phase of labor. The second stage of labor begins when the cervix is fully dilated (10 cm) and ends with delivery of the baby. Preparing for an immediate vaginal delivery would not address the cause of hypotension or improve fetal oxygenation. • Choice C reason:
Prepare for a cesarean birth. This is not the correct answer because there is no indication that the client needs a cesarean birth. A cesarean birth may be indicated if there are signs of fetal compromise, such as severe variable or late decelerations, or maternal complications, such as placenta previa or cord prolapse. However, these conditions are not present in this scenario. Preparing for a cesarean birth would not address the cause of hypotension or improve fetal oxygenation. • Choice D reason:
Assist the client to an upright position. This is not the correct answer because placing the client in an upright position can worsen hypotension and decrease uteroplacental perfusion. An upright position can increase pressure on the inferior vena cava and reduce venous return to the heart. This can lower cardiac output.
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