A nurse is assisting with the monitoring of a client who is in the first stage of labor, with an external fetal monitor in place and IV fluids infusing. Which of the following factors will cause variable decelerations in the fetal heart rate?
Fetal head compression.
Umbilical cord compression.
Maternal opioid administration.
Uteroplacental insufficiency.
The Correct Answer is B
Choice A rationale:
Fetal head compression is unlikely to cause variable decelerations in the fetal heart rate. During contractions and labor, the fetal head may experience pressure, but this usually leads to early decelerations, not variable decelerations. Early decelerations are considered benign and are caused by the head's pressure stimulating the vagus nerve, resulting in a temporary decrease in heart rate.
Choice B rationale:
Umbilical cord compression is a known cause of variable decelerations in the fetal heart rate. When the umbilical cord is compressed, it can temporarily disrupt blood flow and oxygen supply to the fetus, leading to decelerations. Variable decelerations often appear as abrupt, sharp drops in the fetal heart rate and are typically characterized by their unpredictable
nature.
Choice C rationale:
Maternal opioid administration is not a direct cause of variable decelerations in the fetal heart rate. While opioids can cross the placenta and may affect the fetus, they are more likely to cause other issues, such as respiratory depression in the newborn, rather than variable decelerations.
Choice D rationale:
Uteroplacental insufficiency is not the primary factor causing variable decelerations. Uteroplacental insufficiency refers to an inadequate blood flow and oxygen delivery to the placenta, which can lead to late decelerations in the fetal heart rate, not variable decelerations.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
The nurse should include teaching the client to perform daily fetal movement counts because it is an essential aspect of monitoring the baby's well-being and assessing fetal distress. Fetal movement counts help the client become familiar with their baby's normal patterns of movement, allowing them to detect any changes or decreased movements promptly. This can be crucial in identifying potential issues with the baby's health and seeking timely medical attention.
Choice B rationale:
The nurse should not advise limiting fluid intake to 1,000 mL/day for a client with mild preeclampsia. Adequate hydration is important during pregnancy, and excessive fluid restriction can lead to dehydration, which is harmful to both the mother and the baby. Preeclampsia can cause fluid retention and high blood pressure, but complete fluid restriction is not the appropriate approach for managing the condition.
Choice C rationale:
The nurse should not suggest limiting sodium intake to 2,000 mg/day for a client with mild preeclampsia. While reducing sodium intake can be beneficial for some individuals with hypertension, it is not the primary focus in managing mild preeclampsia. The mainstay of treatment for mild preeclampsia typically involves close monitoring, rest, and potential medications to control blood pressure if necessary.
Choice D rationale:
The nurse should not recommend that the client rest in bed in the supine position. During pregnancy, especially with preeclampsia, lying flat on the back (supine position) can lead to a condition called supine hypotensive syndrome. This occurs when the weight of the uterus presses on the vena cava, reducing blood flow back to the heart and potentially causing a drop in blood pressure and decreased blood flow to the baby.
Correct Answer is C
Explanation
Choice A rationale :
Vitamin K decreases the newborn's risk of jaundice. Rationale: This statement is incorrect. Vitamin K plays no direct role in reducing the risk of jaundice in newborns. Jaundice is primarily caused by the accumulation of bilirubin in the blood, which is a different issue than hemorrhagic disorders.
Choice B rationale
Vitamin K decreases the newborn's risk of healthcare-associated infections. Rationale: This statement is incorrect. Vitamin K is not related to reducing the risk of healthcare-associated infections. Its main function is related to blood clotting and preventing hemorrhagic disorders.
Choice C rationale
Vitamin K decreases the newborn's risk of hemorrhagic disorders. Rationale: This statement is correct. Vitamin K is essential for the production of clotting factors in the blood, which helps prevent bleeding or hemorrhagic disorders in newborns. Newborns are born with low levels of vitamin K, so administering a vitamin K injection at birth is a common practice to prevent potential bleeding issues.
Choice D rationale
Vitamin K decreases the newborn's risk of complications from the Hepatitis B vaccine. Rationale: This statement is incorrect. Vitamin K is not directly related to reducing the risk of complications from the Hepatitis B vaccine. The vaccine is designed to protect against Hepatitis B infection, and vitamin K is not involved in its efficacy or safety.
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