Nursing Elites

1. A two-year-old child with heart failure (HF) is admitted for replacement of a graft for coarctation of the aorta. Prior to administering the next dose of digoxin (Lanoxin), the nurse obtains an apical heart rate of 128 bpm. What action should the nurse take?

• A. Determine the pulse deficit
• B. Administer the scheduled dose
• C. Calculate the safe dose range
• D. Review the serum digoxin level

Correct answer: B

Rationale: The correct action for the nurse to take is to administer the scheduled dose of digoxin. A heart rate of 128 bpm in a two-year-old child with heart failure falls within the safe range for digoxin administration. It indicates that the child's heart rate is not excessively low, which could be a concern for administering digoxin. Therefore, proceeding with the scheduled dose is appropriate in this scenario. Determining the pulse deficit (Choice A) is not necessary in this situation as the heart rate is already obtained. Calculating the safe dose range (Choice C) is not required as the heart rate is within the safe range. Reviewing the serum digoxin level (Choice D) is not needed at this point since the heart rate indicates that administering the next dose is appropriate.

2. The healthcare provider prescribes magnesium sulfate 6 grams intravenously (IV) to be infused over 20 minutes for a client with preterm labor. The IV bag contains magnesium sulfate 20 grams in dextrose 5% in water 500 mL. How many mL/hour should the nurse set the infusion pump?

• A. 150 mL/hour
• B. 250 mL/hour
• C. 50 mL/hour
• D. 275 mL/hour

Correct answer: A

Rationale: To calculate the infusion rate, first, determine the total volume to be infused (6 grams of magnesium sulfate) over a specific time frame (20 minutes). Then, calculate the concentration of magnesium sulfate in the IV bag to determine the mL/hour rate. The IV bag contains 20 grams of magnesium sulfate in 500 mL of solution, which means there are 4 grams of magnesium sulfate per 100 mL. Since 6 grams are required, the nurse should set the pump to deliver 150 mL/hour to infuse the prescribed dose over 20 minutes. Choice B, 250 mL/hour, is incorrect because it miscalculates the amount of magnesium sulfate infused per hour. Choice C, 50 mL/hour, is incorrect as it is too slow to deliver the required dose in the specified time frame. Choice D, 275 mL/hour, is incorrect as it overestimates the infusion rate and would deliver the dose too quickly.

3. 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?

• A. This is an inherited X-linked recessive disorder, which primarily affects male children in the family.
• B. The male infant had a viral infection that went unnoticed and untreated, leading to muscle damage.
• C. The lack of the protein dystrophin in the mother can impact the XXX muscle groups of males.
• D. Spinal cord damage due to birth trauma during a breech vaginal birth weakens the muscles.

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.

4. A new mother calls the nurse stating that she wants to start feeding her 6-month-old child something besides breast milk, but is concerned that the infant is too young to start eating solid foods. How should the nurse respond?

• A. Advise the mother to wait at least another month before starting any solid foods.
• B. Instruct the mother to offer a few spoons of 2 or 3 pureed fruits at each meal.
• C. Reassure the mother that the infant is old enough to eat iron-fortified cereal.
• D. Encourage the mother to schedule a developmental assessment of the infant.

Correct answer: C

Rationale: At 6 months, infants are generally ready to start eating iron-fortified cereals as their iron stores begin to deplete. Introducing iron-fortified cereals at this age helps meet the infant's nutritional needs, particularly for iron, which becomes deficient as the infant's iron reserves diminish. It is a safe and appropriate first food to introduce to infants around 6 months of age, along with continued breastfeeding or formula feeding. Choice A is incorrect because waiting another month is not necessary if the infant is 6 months old. Choice B is incorrect as introducing pureed fruits as the first food may not provide the necessary iron that the infant needs at this stage. Choice D is also incorrect as scheduling a developmental assessment is not indicated solely based on the desire to start solid foods; it is more appropriate to reassure the mother about starting iron-fortified cereal.

5. An infant delivered vaginally by an HIV-positive mother is admitted to the newborn nursery. What intervention should the healthcare provider perform first?

• A. Bathe the infant with an antimicrobial soap.
• B. Measure the head and chest circumference.
• C. Obtain the infant's footprints.
• D. Administer vitamin K (AquaMEPHYTON).

Correct answer: A

Rationale: The initial intervention should be to bathe the infant with an antimicrobial soap to reduce the risk of HIV transmission from maternal fluids. This immediate action helps minimize potential exposure to the virus and promotes infection control practices in the care of infants born to HIV-positive mothers. Choice B, measuring head and chest circumference, is important for assessing growth and development but not the priority in this scenario. Choice C, obtaining footprints, is a routine procedure but not a priority over infection control measures. Choice D, administering vitamin K, is important for clotting factors but does not address the immediate risk of HIV transmission.

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