A nurse is caring for a client who is in labor and has an external fetal monitor. The nurse observes late decelerations on the monitor strip and interprets them as indicating which of the following?
Uteroplacental insufficiency.
Umbilical cord compression.
Maternal bradycardia.
Fetal head compression.
The Correct Answer is A
Choice A reason:
Uteroplacental insufficiency is a condition where the placenta cannot deliver enough oxygen and nutrients to the fetus. This can cause fetal hypoxia and distress, which can be detected by late decelerations on the fetal heart rate monitor. Late decelerations are defined as a decrease in the fetal heart rate that begins after the peak of the contraction and returns to baseline after the contraction ends. This indicates that the fetus is not tolerating the reduced blood flow during the contractions and needs immediate intervention. • Choice B reason:
Umbilical cord compression is a condition where the umbilical cord is squeezed or twisted, reducing the blood flow and oxygen to the fetus. This can cause variable decelerations on the fetal heart rate monitor. Variable decelerations are defined as a decrease in the fetal heart rate that varies in timing, shape, and duration, and may or may not be associated with contractions. This indicates that the fetus is experiencing intermittent or sustained cord compression and may need repositioning or other interventions. • Choice C reason:
Maternal bradycardia is a condition where the mother's heart rate is slower than normal, usually less than 60 beats per minute. This can cause reduced blood flow and oxygen to the placenta and the fetus, but it does not cause late decelerations on the fetal heart rate monitor. Maternal bradycardia can be caused by various factors, such as medications, hypothermia, hypothyroidism, or vagal stimulation. It may need treatment depending on the cause and severity. • Choice D reason:
Fetal head compression is a condition where the fetal head is pressed against the cervix or the pelvic floor during labor, stimulating the vagus nerve and slowing down the fetal heart rate. This can cause early decelerations on the fetal heart rate monitor. Early decelerations are defined as a decrease in the fetal heart rate that begins with the onset of the contraction and returns to baseline with the end of the contraction. This indicates that the fetus is descending in the birth canal and is usually a normal and benign finding.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
The correct answer is: d. Persistent fetal bradycardia below 100 bpm.
Choice A: Maternal pulse rate of 100 bpm
A maternal pulse rate of 100 beats per minute (bpm) is slightly elevated but not uncommon during labor due to the physical exertion and stress involved. The normal range for an adult’s resting heart rate is typically between 60 and 100 bpm. While it is important to monitor the maternal pulse, it is not an immediate cause for concern unless accompanied by other symptoms such as hypotension, chest pain, or signs of distress.
Choice B: Maternal blood pressure of 120/70 mm Hg
A maternal blood pressure of 120/70 mm Hg is within the normal range. Normal blood pressure for adults is generally considered to be around 120/80 mm Hg. This reading indicates that the mother is maintaining stable blood pressure during labor, which is a positive sign. Therefore, this does not require immediate reporting to the physician.
Choice C: Decrease in intensity of uterine contractions
A decrease in the intensity of uterine contractions can be concerning as it may indicate ineffective labor, which could prolong the delivery process. However, this is typically managed by adjusting oxytocin levels or other interventions and does not require immediate reporting unless it leads to other complications such as fetal distress.
Choice D: Persistent fetal bradycardia below 100 bpm
Persistent fetal bradycardia below 100 bpm is a significant concern and should be immediately reported to the physician. Normal fetal heart rate ranges from 110 to 160 bpm. Bradycardia, defined as a heart rate below 110 bpm, can indicate fetal distress, hypoxia, or other complications that may require urgent intervention to ensure the safety of the fetus. Persistent bradycardia, especially below 100 bpm, necessitates immediate medical attention to assess and address the underlying cause.
Correct Answer is D
Explanation
Choice A reason:
10% to 15% of their birth weight. This is incorrect because this range is too high for a normal newborn weight loss. Losing more than 10% of their birth weight may indicate dehydration, inadequate feeding, or other problems. • Choice B reason:
20% of their birth weight. This is incorrect because this percentage is way too high for a normal newborn weight loss. Losing 20% of their birth weight would be a serious sign of illness or malnutrition. • Choice C reason:
15% to 18% of their birth weight. This is incorrect because this range is also too high for a normal newborn weight loss. Losing 15% to 18% of their birth weight would be a cause for concern and require further evaluation. • Choice D reason:
5% to 10% of their birth weight. This is correct because this range is within the normal limits for a newborn weight loss. Newborns lose some weight as a result of insufficient caloric intake, fluid loss, and metabolic adjustments in the first week after birth. They usually regain their birth weight by the second week.
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