an infant with tetralogy of fallot becomes acutely cyanotic and hyperneic which action should the nurse implement first
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Nursing Elites

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HESI Maternity Test Bank

1. An infant with tetralogy of Fallot becomes acutely cyanotic and hyperneic. Which action should the nurse implement first?

Correct answer: A

Rationale: In a tetralogy of Fallot situation, placing the infant in a knee-chest position is the initial priority to help increase systemic vascular resistance, which reduces the right-to-left shunt and improves oxygenation. This position can assist in optimizing oxygen levels before considering other interventions. Administering morphine sulfate (choice B) is not the first-line treatment for tetralogy of Fallot crisis. Starting intravenous fluids (choice C) may be necessary but is not the priority in this situation. Providing 100% oxygen by face mask (choice D) may not fully address the underlying issue of decreased systemic vascular resistance that leads to cyanosis in tetralogy of Fallot.

2. The parents of a 3-year-old boy with Duchenne muscular dystrophy (DMD) ask, 'How can our son have this disease? We are wondering if we should have any more children.' What information should the nurse provide these parents?

Correct answer: A

Rationale: The correct answer is A. Duchenne muscular dystrophy is an X-linked recessive disorder, meaning the gene mutation causing DMD is located on the X chromosome. Males have one X chromosome and one Y chromosome, so if the X chromosome they inherit from their mother carries the mutated gene, they will develop DMD. Females have two X chromosomes, so they are carriers of the gene but are usually not affected by the disease. Therefore, the nurse should explain to the parents that DMD is an inherited X-linked recessive disorder that primarily affects male children in the family.

3. At 20 weeks gestation, a client is scheduled for an ultrasound. In preparing the client for the procedure, the nurse should explain that the primary reason for conducting this diagnostic study is to obtain which information?

Correct answer: C

Rationale: The primary reason for an ultrasound at 20 weeks gestation is to assess fetal growth, gestational age, and anatomical development. This evaluation helps ensure the fetus is developing appropriately and can detect any potential issues that may require intervention. Choices A, B, and D are incorrect because at 20 weeks, the primary focus of the ultrasound is not to determine the sex of the fetus, detect chromosomal abnormalities, or assess the lecithin-sphingomyelin ratio. While these factors may be evaluated in pregnancy, they are not the primary reasons for an ultrasound at 20 weeks gestation.

4. What is the best nursing intervention for a pregnant woman with hyperemesis gravidarum?

Correct answer: A

Rationale: The best nursing intervention for a pregnant woman with hyperemesis gravidarum is to administer the prescribed IV solution. Hyperemesis gravidarum is a severe form of nausea and vomiting during pregnancy that can lead to dehydration and electrolyte imbalances. Administering IV fluids helps in managing dehydration, replenishing electrolytes, and providing the necessary hydration for both the mother and the fetus. Giving oral rehydration solution (Choice B) may not be sufficient for severe cases of hyperemesis gravidarum where IV fluids are required. Encouraging small, frequent meals (Choice C) may not be effective as the woman may not be able to tolerate oral intake. Offering ginger tea (Choice D) is not the most appropriate intervention for hyperemesis gravidarum, as it may not provide adequate hydration or electrolyte balance needed in severe cases.

5. During a non-stress test (NST) at 41-weeks gestation, the LPN/LVN notes that the client is not experiencing contractions, the fetal heart rate (FHR) baseline is 144 bpm, and no FHR accelerations are present. What action should the nurse take?

Correct answer: D

Rationale: In this scenario, the nurse should ask the client if she has felt any fetal movement. This action is important as assessing for fetal movement can help determine if the absence of FHR accelerations is attributed to fetal sleep or decreased fetal activity. It is crucial to gather information directly from the client to aid in the assessment and decision-making process. This approach can provide valuable insights into the fetal well-being and guide further interventions if needed.

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