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. A newborn's parents tell the nurse that their baby is already trying to walk. How should the nurse respond?

Correct answer: D

Rationale: When parents report that their newborn is trying to walk, the nurse should understand that newborns exhibit a stepping reflex, which is a normal developmental response. Explaining this reflex to the parents helps them understand that it is a typical behavior seen in newborns rather than true attempts to walk. Encouraging the parents to report this to the healthcare provider (Choice A) may cause unnecessary concern since the stepping reflex is a normal part of newborn development. Acknowledging the parents' observation (Choice B) is a good communication strategy but providing education on the normal reflex is essential. Scheduling the newborn for further neurological testing (Choice C) is not indicated in this scenario as the stepping reflex is a typical finding in newborns.

3. The healthcare provider prescribes Amoxicillin 500mg PO every 8hrs for a child who weighs 22 pounds. The available suspension is labeled Amoxicillin Suspension 250mg/5ml. The recommended maximum dose is 50mg/kg/24hr. How many mL should the nurse administer in a single dose based on the child’s weight?

Correct answer: A

Rationale: To calculate the dose for the child weighing 22 pounds, first convert the weight to kg: 22 lbs ÷ 2.2 = 10 kg. The maximum dose based on weight would be 10 kg × 50 mg/kg/24hr = 500 mg/24hr. Since the medication is prescribed every 8 hours, the dose for each administration would be 500 mg ÷ 3 doses = 166.67 mg. As the available suspension is 250mg/5ml, the nurse should administer 166.67 mg ÷ 250 mg/mL = 0.67 mL per dose. However, since it's not practical to administer a fraction of a milliliter, the nurse should round up to the nearest appropriate dose, which is 10mL.

4. When preparing a class on newborn care for expectant parents, what content should be taught concerning the newborn infant born at term gestation?

Correct answer: C

Rationale: Vernix caseosa is a white, cheesy substance that acts as a protective barrier on the skin of newborns, particularly present in skin folds. It helps to prevent dehydration and protect the delicate skin of the newborn from the amniotic fluid in utero. Educating expectant parents about the presence and function of vernix caseosa can help them understand the importance of its preservation during the immediate postnatal period. Choices A, B, and D are incorrect as they do not directly relate to the protective function of vernix caseosa in newborns. Milia are small, white bumps on the skin due to blocked oil glands, meconium is the first stool of a newborn and is typically dark green or black in color, and pseudostrabismus refers to false appearance of misalignment of the eyes, which usually resolves on its own without intervention.

5. A young woman who underwent a liver transplant one year ago tells the clinic nurse that she would like to start a family. How should the nurse intervene?

Correct answer: A

Rationale: Post-liver transplant pregnancy is high-risk due to potential complications associated with immunosuppressive therapy and the transplanted organ's health. Providing information about the risks involved allows the client to make an informed decision regarding family planning.

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