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 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.
Correct Answer is A
Explanation
Choice A reason:
Fetal position is persistent occiput posterior is correct, as this position can cause difficult, prolonged labor and severe backache. The occiput posterior position means that the back of the fetal head is facing the maternal sacrum, which can result in poor alignment and descent, increased pressure on the maternal sacrum and nerves, and increased risk of perineal trauma. The nurse should encourage the client to change positions frequently, use pelvic rocking exercises, apply counterpressure to the sacrum, and administer analgesics as needed.
Choice B reason:
Fetal attitude is in general flexion is incorrect, as this attitude can facilitate normal labor and delivery. The fetal attitude refers to the degree of flexion or extension of the fetal head and limbs in relation to the fetal trunk. General flexion means that the fetal head is flexed on the chest, the arms are crossed over the chest, and the legs are flexed at the knees. This attitude allows the smallest diameter of the fetal head to pass through the birth canal.
Choice C reason:
Fetal lie is longitudinal is incorrect, as this lie can facilitate normal labor and delivery. The fetal lie refers to the relationship between the long axis of the fetus and the long axis of the mother. Longitudinal lie means that both axes are parallel, which allows for either a vertex (head-first) or a breech (butocks-first) presentation.
Choice D reason:
Maternal pelvis is gynecoid is incorrect, as this pelvis can facilitate normal labor and delivery. The maternal pelvis refers to the shape and size of the bony pelvis that affects the passage of the fetus. Gynecoid pelvis is the most common and favorable type for vaginal birth, as it has a rounded inlet, a wide pubic arch, and adequate outlet dimensions.
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