HESI RN

1. A school-age child with a history of type 1 diabetes mellitus is brought to the emergency department with confusion and rapid breathing. The practical nurse (PN) suspects diabetic ketoacidosis (DKA). Which initial intervention should the PN anticipate?

• A. Administer subcutaneous insulin.
• B. Give oral glucose tablets.
• C. Start intravenous fluids.
• D. Administer oxygen therapy.

Correct Answer: C

Rationale: Intravenous fluids are typically the initial intervention in diabetic ketoacidosis (DKA) to treat dehydration and stabilize the patient's condition. The fluid replacement helps correct electrolyte imbalances and improve perfusion, which are crucial in managing DKA. Insulin therapy follows after fluid resuscitation to address the underlying cause of DKA, which is the lack of insulin leading to increased ketone production. Administering subcutaneous insulin (Choice A) would be premature without first addressing the dehydration and electrolyte imbalances. Giving oral glucose tablets (Choice B) is contraindicated in DKA as the patient already has high blood glucose levels. Administering oxygen therapy (Choice D) may be necessary based on the patient's condition, but addressing dehydration with intravenous fluids is the priority intervention in DKA.

2. 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.

3. The nurse is assessing a 3-month-old infant who was brought to the clinic by the parents due to concerns about the infant’s feeding. The parents report that the infant has been vomiting after every feeding and has not gained any weight. What should the nurse assess first?

• A. Evaluate the infant’s feeding technique
• B. Check the infant’s hydration status
• C. Measure the infant’s abdominal circumference
• D. Review the infant’s growth chart

Correct Answer: B

Rationale: Assessing hydration status is crucial in an infant who is vomiting frequently, as dehydration can quickly become a serious issue. In this scenario, the infant's inability to retain feeds and lack of weight gain may indicate a potential risk of dehydration, making it essential to prioritize checking the infant's hydration status to prevent complications. Evaluating the feeding technique (Choice A) could be important but is secondary to addressing potential dehydration. Measuring the abdominal circumference (Choice C) and reviewing the growth chart (Choice D) are not the priority in this situation where dehydration is a primary concern.

4. What is the priority intervention for a 16-year-old client with a history of depression who is brought to the emergency department after taking an overdose of acetaminophen?

• A. Administer activated charcoal
• B. Place the client on continuous cardiac monitoring
• C. Prepare for gastric lavage
• D. Administer N-acetylcysteine as prescribed

Correct Answer: D

Rationale: The priority intervention for a client who has taken an acetaminophen overdose is to administer N-acetylcysteine promptly. N-acetylcysteine is the antidote for acetaminophen overdose and helps prevent liver damage. Activated charcoal may be used in certain cases, but N-acetylcysteine takes precedence as it directly counteracts the toxic effects of acetaminophen. Continuous cardiac monitoring and gastric lavage are not the priority interventions for acetaminophen overdose. Administering N-acetylcysteine is crucial to prevent liver damage and address the overdose, making it the most urgent action in this scenario.

5. A child with cystic fibrosis is admitted to the hospital with respiratory distress. Which intervention should the practical nurse (PN) implement?

• A. Administer bronchodilators as prescribed.
• B. Limit fluid intake.
• C. Provide a high-fat diet.
• D. Encourage bed rest only.

Correct Answer: A

Rationale: Administering bronchodilators as prescribed is crucial for managing respiratory distress in children with cystic fibrosis. Bronchodilators help to open the airways, facilitating easier breathing for the child. Limiting fluid intake, providing a high-fat diet, or encouraging bed rest only are not appropriate interventions for respiratory distress associated with cystic fibrosis. Limiting fluid intake could worsen dehydration, a high-fat diet is not recommended due to pancreatic insufficiency in cystic fibrosis, and bed rest alone does not address the respiratory distress.