A nurse in the labor and delivery unit is caring for a client who is undergoing external fetal monitoring. The nurse notices that the fetal heart rate starts to decrease after a contraction begins, with the lowest rate occurring after the contraction's peak. What should be the nurse's first action?
Administer oxygen using a non-rebreather mask.
Increase the rate of maintenance IV infusion.
Elevate the client's legs.
Place the client in the lateral position.
The Correct Answer is D
Choice A reason:
Administering oxygen using a non-rebreather mask is a subsequent step if initial measures do not improve fetal heart rate decelerations. It can help increase the amount of oxygen available to the fetus. Oxygen administration is a supportive measure that can be used if there are signs of fetal distress. In the scenario described, where the fetal heart rate slows after the start of a contraction with the lowest rate occurring after the peak, it suggests late decelerations, which are often associated with uteroplacental insufficiency. Administering oxygen can help increase the fetal oxygen reserve and is a common intervention during labor when there are concerns about fetal well-being.
Choice B reason:
Increasing the rate of maintenance IV infusion is typically considered when there is a concern for maternal hypotension or dehydration, which may not be the immediate cause of the observed fetal heart rate pattern. Increasing the rate of an IV infusion can help improve maternal hydration and blood pressure, which in turn can enhance placental perfusion. However, this intervention is more indirect and may not provide the immediate response needed to address fetal heart rate decelerations. It is typically considered after more direct interventions, such as repositioning the mother, have been attempted.
Choice C reason:
Elevating the client's legs can help improve venous return to the heart, potentially increasing maternal cardiac output and blood flow to the placenta. While this can be beneficial, it is not the primary intervention for late decelerations. Repositioning the mother to improve uteroplacental circulation is generally the first step.
Choice D reason:
Placing the client in the lateral position is often the first action taken when late decelerations are observed. This position helps improve uteroplacental blood flow and can quickly address potential issues related to fetal oxygenation. This position helps to relieve pressure on the inferior vena cava and aorta, which can be compressed by the gravid uterus, especially in the supine position. Relieving this pressure helps to improve uteroplacental circulation and can quickly address the cause of late decelerations, which is often related to compromised blood flow to the placenta.
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View Related questions
Correct Answer is A
Explanation
Choice a reason:
Methylergonovine is a medication used to prevent postpartum hemorrhage, which is excessive bleeding following childbirth. It works by causing the uterine muscles to contract, thereby reducing blood loss. Postpartum hemorrhage is a significant cause of maternal morbidity and mortality worldwide, and methylergonovine is one of the medications used as a prophylactic measure to manage this risk.
Choice b reason:
While postpartum infections are a concern after childbirth, methylergonovine is not used to prevent infections. Postpartum infections can occur in different parts of the body, such as the uterus (endometritis), the urinary tract, or the site of an episiotomy or cesarean section incision. Prevention of postpartum infections typically involves hygiene practices, antibiotic prophylaxis when indicated, and monitoring for signs of infection.
Choice c reason:
Thromboembolic events, which include deep vein thrombosis and pulmonary embolism, are also a risk during the postpartum period. However, methylergonovine is not used to prevent these conditions. Prevention of thromboembolic events in the postpartum period may involve the use of anticoagulants, mechanical methods such as compression stockings, and early mobilization.
Choice d reason:
Hypertension, or high blood pressure, may be observed during the postpartum period, but methylergonovine is not indicated for the prevention of hypertension. Management of postpartum hypertension typically includes antihypertensive medications and monitoring of blood pressure levels. Methylergonovine can actually cause an increase in blood pressure as a side effect, so it must be used cautiously in individuals with hypertension.
Correct Answer is D
Explanation
Choice a reason:
While ultrasound can be used for estimating fetal age, at 36 weeks of gestation, this is not the primary reason for performing an ultrasound before an amniocentesis. Fetal age is usually estimated earlier in the pregnancy to help with dating the pregnancy and determining the due date.
Choice b reason:
Determining if there is more than one fetus is typically established earlier in the pregnancy. By 36 weeks, the presence of multiples would already be known, so this would not be the primary reason for an ultrasound before an amniocentesis at this stage.
Choice c reason:
An ultrasound can be used as a screening tool for spina bifida, but it is not the main reason for an ultrasound before an amniocentesis at 36 weeks. Screening for spina bifida and other anomalies is usually done during the second trimester.
Choice d reason:
The primary reason for an ultrasound before an amniocentesis is to identify the location of the placenta and fetus. This information is crucial to ensure the safety of both the mother and the fetus during the procedure by avoiding injury to the placenta and ensuring the amniotic needle is inserted in a safe location.
