In which clinical situation would the nurse most likely anticipate a fetal bradycardia?
Drug consumed by the mother like cocaine.
Prolonged umbilical cord compression.
Fetal anemia.
Tocolytic treatment using terbutaline.
The Correct Answer is B
Choice A rationale
Cocaine is a stimulant that typically causes fetal tachycardia (an elevated fetal heart rate) due to its sympathomimetic effects, increasing maternal and subsequently fetal heart rate and blood pressure. It does not usually lead to fetal bradycardia.
Choice B rationale
Prolonged umbilical cord compression can lead to fetal bradycardia because it restricts oxygenated blood flow to the fetus. The baroreceptors in the fetus respond to decreased oxygen by slowing the heart rate in an attempt to conserve oxygen and maintain perfusion to vital organs.
Choice C rationale
Fetal anemia, a decrease in red blood cell count, can lead to fetal tachycardia as the heart attempts to compensate for reduced oxygen-carrying capacity by increasing cardiac output. Bradycardia is not a typical initial response to fetal anemia.
Choice D rationale
Terbutaline is a tocolytic medication used to relax the smooth muscle of the uterus and prevent preterm labor. Its side effects often include maternal and fetal tachycardia due to its beta-adrenergic agonist activity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Supine positioning can compress the vena cava, leading to decreased venous return, reduced cardiac output, and potential maternal hypotension, which can compromise fetal oxygenation. Alternative positions like lateral or semi-recumbent are generally preferred during labor to optimize blood flow.
Choice B rationale
Assessing anesthesia or pain level every 30 minutes is crucial in the active phase of labor to evaluate the effectiveness of pain management interventions and the client's comfort. This frequent monitoring allows for timely adjustments to the pain management plan based on the client's subjective experience and physiological responses.
Choice C rationale
While assessing vaginal bleeding and the fundus is important in the postpartum period to monitor for uterine involution and hemorrhage, it is not the priority during the active phase of labor. The focus during active labor is on maternal and fetal well-being during the labor process itself.
Choice D rationale
Continuous or intermittent oxygen saturation monitoring may be indicated based on the client's condition and fetal heart rate patterns, but it is not a routine assessment every half hour for all clients in active labor. It is typically reserved for situations of suspected maternal hypoxemia or fetal distress.
Correct Answer is D
Explanation
Choice A rationale
Puerperal infection, an infection of the reproductive tract after childbirth, is a risk factor for all postpartum women. However, a large newborn size (macrosomia) increases the risk of prolonged labor, increased instrumentation during delivery, and postpartum hemorrhage, which indirectly increases the risk of infection but is not the most direct immediate risk related to the newborn's weight.
Choice B rationale
Retained placental fragments are a risk factor when the placenta does not deliver intact. While a large newborn can sometimes be associated with difficulties during placental delivery, it is not the primary direct risk factor immediately following birth. Uterine atony is a more immediate and direct risk related to uterine overdistension.
Choice C rationale
Thrombophlebitis, the formation of blood clots in the veins, is a postpartum risk factor related to hormonal changes, immobility, and hypercoagulability. While factors like prolonged labor (more common with large babies) can contribute, it is not the most immediate and direct risk in the first few hours postpartum for a woman who delivered a large newborn.
Choice D rationale
A newborn weighing 9 lb 6 oz (4252 g) is considered macrosomic. This large size can lead to overdistension of the uterus during pregnancy and labor. Uterine overdistension impairs the ability of the uterine muscles to contract effectively after delivery, a condition known as uterine atony. Uterine atony is the primary and most immediate risk for postpartum hemorrhage in women who have delivered large newborns. .
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