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 C
Explanation
Choice A reason:
Acrocyanosis (choice A) is a common and relatively normal finding in newborns, especially in the first few days of life. It refers to the bluish discoloration of the hands and feet due to peripheral vasoconstriction. Acrocyanosis alone does not necessarily indicate significant difficulty with oxygenation and is usually a transient and benign condition.
Choice B reason:
A respiratory rate of 54 breaths/minute (choice B) is within the normal range for a newborn. The normal respiratory rate for a newborn can range from 30 to 60 breaths per minute. While an abnormal respiratory rate outside this range may be a concern, a rate of 54 breaths/minute is not indicative of significant oxygenation difficulty by itself.
Choice C reason:
Nasal flaring in a newborn is a concerning sign that suggests the baby is experiencing difficulty with oxygenation. When a newborn is having trouble getting enough oxygen, they may instinctively open their nostrils wider (nasal flaring) to increase the airflow into the nose and improve oxygen intake. This is a compensatory mechanism to overcome respiratory distress and is often seen in newborns with respiratory problems. Nasal flaring is an important clinical sign that indicates the baby may be struggling to breathe adequately and requires further evaluation and intervention by the healthcare team.
Choice D reason:
Abdominal breathing (choice D) is a normal breathing pattern in newborns. Newborns predominantly use their diaphragm to breathe, which results in abdominal movements during respiration. This is a normal and expected finding in healthy newborns and does not necessarily suggest oxygenation problems.
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.
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