A nurse is assisting in the care of a client who is in active labour. The nurse notes variable decelerations of the FHR. The nurse should identify which of the following is a cause of variable decelerations.
Fetal head compression.
Umbilical cord compression.
Maternal fever.
Polyhydramnios.
The Correct Answer is B
Choice A rationale:
Choice A, fetal head compression, is not the correct answer in this case. Fetal head compression can cause early decelerations in the FHR, not variable decelerations. Early decelerations are often a result of the fetal head being compressed during contractions and are considered benign and expected during labor.
Choice B rationale:
The correct answer is choice B, which is umbilical cord compression. Variable decelerations of the fetal heart rate (FHR) can occur during labor due to various rationales, and umbilical cord compression is one of the common causes. When the umbilical cord gets compressed, it can briefly reduce or restrict the blood flow and oxygen supply to the fetus, leading to temporary decelerations in the FHR.
Choice C rationale:
Choice C, maternal fever, is also not the correct answer for variable decelerations in FHR. Maternal fever can be a sign of infection, and it may lead to other fetal heart rate abnormalities, such as tachycardia (an increased heart rate), but it is not specifically associated with variable decelerations.
Choice D rationale:
Choice D, polyhydramnios, is not the cause of variable decelerations in this scenario. Polyhydramnios refers to an excessive accumulation of amniotic fluid around the fetus. While it can have implications for pregnancy, it is not directly linked to variable decelerations of the FHR.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
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.
Correct Answer is A
Explanation
Choice A rationale:
Visual disturbances should be reported to the provider because the client is experiencing headaches, blurred vision, and dizziness, which can be signs of preeclampsia. Preeclampsia is a serious condition that can develop during pregnancy and is characterized by high blood pressure and damage to organs like the liver and kidneys. Visual disturbances may indicate neurological involvement and can pose a risk to both the client and the fetus.
Choice B rationale:
Blood pressure should be reported to the provider due to the client's symptoms and medical history. The client's weight gain, swelling of feet and fingers, and 2+ pitting edema suggest fluid retention, which can be associated with preeclampsia. High blood pressure is a key diagnostic criterion for preeclampsia, and the nurse must monitor it closely to assess the severity of the condition and the potential risk to both the client and the fetus.
Choice C rationale:
Respirations do not appear to be a significant concern based on the information provided. While respiratory status is important to monitor during pregnancy, there are no indications in the scenario to suggest respiratory distress or abnormalities that require immediate reporting to the provider.
Choice D rationale:
Deep tendon reflexes are mentioned in the client's medical history but do not show any immediate signs of concern. Absent clonus and 3+ deep tendon reflexes are within the normal range and not typically alarming during pregnancy. However, the nurse should continue to monitor these reflexes during subsequent visits.
Choice E rationale:
Weight gain is mentioned in the medical history but is not currently a critical finding to report. A 6 lb weight gain over 2 weeks may be considered appropriate for a pregnant client at 32 weeks of gestation, but it should be assessed in conjunction with other symptoms for a comprehensive evaluation.
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