A nurse is assisting in the care of a client who is in active labor. The nurse notes variable decelerations of the FHR. The nurse should identify which of the following as a cause of variable decelerations?
Fetal head compression
Polyhydramnios
Maternal fever
Umbilical cord compression
The Correct Answer is D
Choice A reason:
Fetal head compression is incorrect, as this factor can cause early decelerations in the fetal heart rate. Early decelerations are symmetrical decreases in the FHR that mirror the contractions, which indicate fetal head compression and vagal stimulation. Fetal head compression occurs as the fetus descends into the birth canal and does not pose a threat to the fetal well-being.
Choice B reason:
Polyhydramnios is incorrect, as this factor can cause variable or late decelerations in the fetal heart rate, depending on the underlying cause. Polyhydramnios refers to an excessive amount of amniotic fluid, which can result from fetal anomalies, maternal diabetes, multiple gestation, or other conditions. Polyhydramnios can cause umbilical cord prolapse, uterine overdistension, or placental abruption, leading to reduced blood flow and oxygen delivery to the fetus.
Choice C reason:
Maternal fever is incorrect, as this factor can cause late decelerations in the fetal heart rate. Late decelerations are symmetrical decreases in the FHR that begin after the peak of the contraction and return to baseline after the contraction ends, which indicate uteroplacental insufficiency. Maternal fever can increase maternal and fetal metabolism and oxygen demand, leading to fetal hypoxia and acidosis.
Choice D reason:
Umbilical cord compression is correct, as this factor can cause variable decelerations in the fetal heart rate. Variable decelerations are abrupt decreases in the FHR that vary in onset, duration, and depth, which indicate umbilical cord compression and reduced blood flow to the fetus. Umbilical cord compression can occur due to cord prolapse, nuchal cord, short cord, or other causes. The nurse should reposition the client, administer oxygen, and prepare for delivery if indicated.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Position the client on her side is correct, as this is the first action the nurse should take according to the ABCDE priority framework. Late decelerations are symmetrical decreases in the fetal heart rate that begin after the peak of the contraction and return to baseline after the contraction ends, which indicate uteroplacental insufficiency and fetal hypoxia. Positioning the client on her side can improve blood flow and oxygen delivery to the placenta and fetus by relieving pressure on the vena cava and aorta.
Choice B reason: Elevate the client's legs is incorrect, as this is not a priority action for a client who has late decelerations. Elevating the legs can increase venous return and cardiac output, but it can also reduce blood flow and oxygen delivery to the placenta and fetus by compressing the vena cava and aorta.
Choice C reason: Administer oxygen via face mask is incorrect, as this is not the first action the nurse should take, although it is important to do later. Administering oxygen can increase oxygen saturation and delivery to the placenta and fetus, but it does not address the cause of uteroplacental insufficiency or improve blood flow.
Choice D reason: Increase the infusion rate of the IV fluid is incorrect, as this is not the first action the nurse should take, although it may be indicated later. Increasing the infusion rate of IV fluid can expand blood volume and improve placental perfusion, but it does not address the cause of uteroplacental insufficiency or improve blood flow. The nurse should obtain a provider's order before increasing the IV fluid rate.
Correct Answer is B
Explanation
Choice B reason:
Uterine atony is the failure of the uterus to contract and retract after delivery, which can lead to excessive bleeding and hemorrhage. The client is at risk for uterine atony due to delivering a large newborn, which can overstretch the uterine muscles and reduce their tone.
Choice A reason:
Puerperal infection is an infection of the reproductive tract that occurs within six weeks after delivery. The client is not at increased risk for puerperal infection due to delivering a large newborn, unless there are other factors such as prolonged labor, multiple vaginal exams, or episiotomy.
Choice C reason:
Thrombophlebitis is an inflammation of a vein with a blood clot formation. The client is not at increased risk for thrombophlebitis due to delivering a large newborn, unless there are other factors such as immobility, dehydration, or trauma.
Choice D reason:
Retained placental fragments are pieces of the placenta that remain in the uterus after delivery, which can cause bleeding and infection. The client is not at increased risk for retained placental fragments due to delivering a large newborn, unless there are other factors such as abnormal placental atachment, manual removal, or incomplete separation.
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