After teaching a pregnant woman about the hormones produced by the placenta, the nurse determines that the teaching was successful when the woman identifies which hormone produced as being the basis for pregnancy tests?
Human placental lactogen (hPL).
Estrogen (estriol).
Progesterone (progestin).
Human chorionic gonadotropin (hCG).
The Correct Answer is D
A. Human placental lactogen (hPL) is a hormone produced by the placenta that helps regulate the metabolism of the mother and fetus, but it is not used as the basis for pregnancy tests. It plays a role in modulating the metabolic state of the mother during pregnancy to facilitate the energy supply of the fetus.
B. Estrogen (estriol) is another hormone produced by the placenta, which is important for maintaining pregnancy and preparing the body for childbirth. However, it is not the hormone detected by pregnancy tests. Estriol levels increase significantly during pregnancy but are not used as a marker for pregnancy tests.
C. Progesterone (progestin) is crucial for maintaining the uterine lining and supporting early pregnancy. While it is essential for a successful pregnancy, it is not the hormone that pregnancy tests detect. Progesterone helps prevent uterine contractions and supports the endometrium.
D. Human chorionic gonadotropin (hCG) is the hormone detected by pregnancy tests. It is produced by the placenta shortly after the embryo attaches to the uterine lining. The presence of hCG in the blood or urine is a reliable indicator of pregnancy, which is why it is the basis for pregnancy tests.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is A
Explanation
Choice A reason:
One side effect of oxytocin stimulation is hypertonic contractions. This can be detrimental to the fetus because it causes a reduction of placental blood flow. Placental blood flow is essential for delivering oxygen and nutrients to the fetus and removing waste products. Hypertonic contractions are too frequent, too long, or too strong, and they can reduce the time for the placenta to refill with blood between contractions. This can lead to fetal hypoxia, acidosis, and distress.
Choice B reason:
One side effect of oxytocin stimulation is hypertonic contractions. This can be detrimental to the fetus because it produces a prolapsed cord. This is incorrect because a prolapsed cord is not caused by hypertonic contractions, but by other factors such as a low-lying placenta, a premature rupture of membranes, a small or preterm fetus, or an abnormal presentation. A prolapsed cord occurs when the umbilical cord slips through the cervix and into the vagina before or during delivery. This can compress the cord and cut off the blood supply to the fetus, resulting in fetal bradycardia and possible death.
Choice C reason:
One side effect of oxytocin stimulation is hypertonic contractions. This can be detrimental to the fetus because it increases maternal renal blood flow. This is incorrect because hypertonic contractions do not affect maternal renal blood flow directly. Maternal renal blood flow is influenced by factors such as maternal blood pressure, hydration, cardiac output, and renal function. Hypertonic contractions may cause maternal dehydration, which can reduce renal blood flow, but this is not a direct effect of oxytocin stimulation.
Choice D reason:
One side effect of oxytocin stimulation is hypertonic contractions. This can be detrimental to the fetus because it decreases maternal blood pressure. This is incorrect because hypertonic contractions do not cause maternal hypotension, but rather hypertension. Hypertension is a common side effect of oxytocin stimulation, as oxytocin causes vasoconstriction and increases the sensitivity of the vascular smooth muscle to catecholamines. Hypertension can lead to complications such as preeclampsia, eclampsia, and placental abruption.
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