A nurse is observing the electronic fetal heart rate monitor tracing for a client who is at 40 weeks of gestation and is in labor. The nurse should suspect a problem with the umbilical cord when she observes which of the following patterns?
Accelerations.
Late decelerations.
Variable decelerations.
Early decelerations.
The Correct Answer is C
Choice A. Accelerations are normal responses that indicate the fetus is healthy and active. Accelerations occur when the fetal heart rate increases in response to stimuli. •
Choice B. Late decelerations are nonreassuring patterns that indicate fetal hypoxia due to placental insufficiency. Late decelerations occur when the placental blood flow decreases due to uterine contractions during labor, causing the fetal heart rate to decrease. •
Choice C. Variable decelerations are nonreassuring patterns that indicate fetal hypoxia due to umbilical cord compression. Variable decelerations occur when the umbilical cord is trapped by the cervical opening or the fetal body part, twisted, or knotted, causing the fetal oxygen supply to be impaired and the fetal heart rate to drop sharply. •
Choice D. Early decelerations are reassuring patterns that indicate a neural reflex due to fetal head compression. Early decelerations occur when the fetal head is compressed by uterine contractions during labor, causing the parasympathetic nervous system to be stimulated and the heart rate to decrease. The correct answer is C. Variable decelerations are the most common pattern that indicates a problem with the umbilical cord and requires urgent intervention.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A: Change her position to the right side
Changing the mother’s position to the right side can sometimes help improve fetal oxygenation by relieving pressure on the vena cava. However, since the mother is already lying on her left side, which is typically the preferred position to optimize blood flow, changing to the right side may not be as effective .
Choice B: Place a wedge under the left hip
Placing a wedge under the left hip is a common intervention to improve uteroplacental blood flow. This position helps to tilt the uterus off the vena cava, enhancing venous return and improving cardiac output, which can positively affect fetal oxygenation. This is why it is the correct answer.
Choice C: Lower the head of the bed
Lowering the head of the bed can help increase blood flow to the upper body and brain, but it does not specifically address the issue of improving uteroplacental blood flow. This action is less targeted for resolving nonreassuring fetal heart rate patterns.
Choice D: Place the mother in a Trendelenburg position
The Trendelenburg position, where the mother is laid flat on her back with her feet elevated higher than her head, is generally used to treat hypotension or to improve venous return in cases of shock. However, it is not typically recommended for nonreassuring fetal heart rate patterns as it can increase pressure on the diaphragm and reduce respiratory efficiency.
Correct Answer is D
Explanation
A. Right occiput posterior position: This position refers to the baby's head being down but facing the mother's back, which can make labor more challenging but is not a contraindication for amniotomy.
B. -2 station: This indicates that the baby's head is not yet engaged in the pelvis. While it can complicate labor, it is not an absolute contraindication for amniotomy, though caution is advised.
C. Cephalic presentation: This is the most common and favorable position for delivery, where the baby's head is down and ready for birth. It is not a contraindication for amniotomy.
D. Dilation less than 3 cm: This is a contraindication for amniotomy because the cervix is not sufficiently dilated, which can increase the risk of complications such as infection or prolonged labor.
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