Nursing Elites

1. A child who weighs 25 kg is receiving IV ampicillin at a dose of 300 mg/kg/24 hours in equally divided doses every 4 hours. How many milligrams should the nurse administer to the child for each dose?

• A. 1875 mg
• B. 625 mg
• C. 2000 mg
• D. 1500 mg

Correct answer: A

Rationale: To calculate the correct dose for each administration, you first need to find the total daily dose: 300 mg/kg * 25 kg = 7500 mg/day. Since this total dose is divided into equally divided doses every 4 hours, there are 6 doses in 24 hours. Therefore, 7500 mg ÷ 6 doses = 1250 mg per dose. The nurse should administer 1250 mg every 4 hours, resulting in a total of 1875 mg for each dose in a 24-hour period. Choice A, 1875 mg, is the correct answer. Choice B, 625 mg, is incorrect as it does not consider the total daily dose and the frequency of administration. Choice C, 2000 mg, is incorrect as it is not the calculated dosage based on the given parameters. Choice D, 1500 mg, is also incorrect as it does not reflect the correct dosage calculation for each dose.

2. The healthcare provider is assessing an infant with pyloric stenosis. Which pathophysiological mechanism is the most likely consequence of this infant's clinical picture?

• A. Metabolic alkalosis.
• B. Respiratory acidosis.
• C. Metabolic acidosis.
• D. Respiratory alkalosis.

Correct answer: A

Rationale: Pyloric stenosis leads to obstruction at the outlet of the stomach, causing frequent vomiting and loss of stomach acids. This results in a loss of hydrochloric acid and hydrogen ions, leading to metabolic alkalosis due to an increase in serum bicarbonate levels. Therefore, the correct answer is metabolic alkalosis. Choice B, respiratory acidosis, is incorrect as it is not typically associated with pyloric stenosis. Choice C, metabolic acidosis, is incorrect because the loss of stomach acids in pyloric stenosis leads to metabolic alkalosis, not acidosis. Choice D, respiratory alkalosis, is also incorrect as it is not the usual consequence of pyloric stenosis.

3. What intervention should the nurse implement first for a male toddler brought to the emergency center approximately three hours after swallowing tablets from his grandmother’s bottle of digoxin (Lanoxin)?

• A. Administer activated charcoal orally
• B. Prepare gastric lavage
• C. Obtain a 12-lead electrocardiogram
• D. Give IV digoxin immune fab (Digibind)

Correct answer: D

Rationale: In cases of digoxin toxicity, IV digoxin immune fab (Digibind) is the antidote and should be administered first to counteract the effects of digoxin poisoning. This intervention is crucial in managing digoxin overdose and should be initiated promptly to improve patient outcomes. Activated charcoal and gastric lavage are not effective in treating digoxin poisoning and may not be beneficial at this stage. While obtaining an electrocardiogram is important to assess cardiac function, administering the antidote should take precedence to address the immediate life-threatening effects of digoxin toxicity.

4. When should a mother introduce solid foods to her infant? The mother of a 4-month-old baby girl asks the nurse when she should introduce solid foods to her infant. The mother states, 'My mother says I should put rice cereal in the baby’s bottle now.' The nurse should instruct the mother to introduce solid foods when her child exhibits which behavior?

• A. Stops rooting when hungry
• B. Opens mouth when food comes her way
• C. Awakens once for nighttime feedings
• D. Gives up a bottle for a cup

Correct answer: B

Rationale: The correct answer is 'B: Opens mouth when food comes her way.' Readiness for solid foods is indicated by the infant showing interest in food and being able to sit up with support. This behavior demonstrates the infant's readiness to start introducing solid foods in their diet. Choices A, C, and D are incorrect because stopping rooting when hungry, awakening once for nighttime feedings, and giving up a bottle for a cup are not indicators of readiness for solid foods in infants.

5. A 16-year-old adolescent with cystic fibrosis is admitted to the hospital with a respiratory infection. The nurse is teaching the adolescent about the importance of airway clearance techniques. Which statement by the adolescent indicates a need for further teaching?

• A. I should do my airway clearance exercises every day.
• B. I don’t need to do my airway clearance exercises if I feel okay.
• C. Airway clearance helps prevent mucus buildup in my lungs.
• D. I should continue my airway clearance routine even when I’m not sick.

Correct answer: B

Rationale: The correct answer is B. Airway clearance exercises are essential for individuals with cystic fibrosis to prevent mucus buildup in their lungs. It is crucial to perform these exercises regularly, even when feeling well, to maintain lung health and prevent complications. Choice A is correct as doing airway clearance exercises daily is necessary. Choice C is also accurate as airway clearance does indeed help prevent mucus buildup. Choice D is correct as it is important to continue the airway clearance routine even when not sick to maintain lung health. Choice B is incorrect because stating that airway clearance exercises are unnecessary when feeling okay demonstrates a misunderstanding of the importance of consistent airway clearance in cystic fibrosis management.

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