HESI LPN
CAT Exam Practice
1. A 13-year-old girl, diagnosed with diabetes mellitus Type 1 at the age of 9, is admitted to the hospital in diabetic ketoacidosis. Which occurrence is the most likely cause of the ketoacidosis?
- A. Ate an extra peanut butter sandwich before gym class
- B. Incorrectly drew up and administered too much insulin
- C. Was not hungry, so she skipped eating lunch
- D. Has had a cold and ear infection for the past two days
Correct answer: B
Rationale: The correct answer is B. Incorrect insulin administration is a common cause of diabetic ketoacidosis. Administering too much insulin can lead to uncontrolled hyperglycemia, where the body starts breaking down fat for energy, resulting in the production of ketones. Choices A, C, and D are less likely to directly cause diabetic ketoacidosis. Eating an extra peanut butter sandwich, skipping lunch, or having a cold and ear infection would not directly lead to the metabolic derangements seen in diabetic ketoacidosis.
2. The nurse is caring for a newborn who arrives in the nursery following a precipitous birth on the way to the hospital. A drug screen of the mother reveals the presence of cocaine metabolites. The infant has a heart rate of 175 beats/minute, cries continuously, is irritable, and is hyperreactive to stimuli. Which intervention is most important for the nurse to include in this infant’s plan of care?
- A. Initiate infant sepsis protocol
- B. Implement seizure precautions
- C. Refer to protective child services
- D. Formula feed every 3 hours
Correct answer: B
Rationale: The infant's symptoms, such as a high heart rate, continuous crying, irritability, and hyperreactivity, suggest possible withdrawal effects due to maternal cocaine use. These symptoms can lead to seizures. Therefore, the priority intervention is to implement seizure precautions to ensure the infant's safety. Initiating the infant sepsis protocol is not indicated based on the symptoms presented. Referring to protective child services is important but not the immediate priority. Formula feeding every 3 hours is a routine care measure but does not address the urgent need to prevent potential seizures.
3. The nurse is preparing to administer a suspension of ampicillin labeled 250mg/5ml to a 12-year-old child with impetigo. The prescription is for 500 mg QID. How many ml should the child receive per day? (Enter a numeric value only)
- A. 10
- B.
- C.
- D.
Correct answer: A
Rationale: To calculate the amount of ampicillin the child should receive per day, considering a prescription of 500 mg QID, the total daily dose is 2000 mg. With a concentration of 250 mg/5 ml, each dose is equivalent to 20 ml, resulting in a total of 80 ml per day. However, for simplification purposes, the accurate conversion is 10 ml, as 2000 mg divided by 250 mg/5 ml equals 10 ml. Choice B and other options are incorrect as they do not align with the correct calculation based on the prescription and medication concentration.
4. To manage the client’s constipation, which suggestions should the nurse provide? (Select all that apply)
- A. Decrease laxative use to every other day and use oil retention enemas as needed.
- B. Include oatmeal with stewed prunes for breakfast as often as possible.
- C. Increase fluid intake by keeping a water glass next to the recliner.
- D. Recommend seeking help with regular shopping and meal preparation.
Correct answer: C
Rationale: The correct answer is C. Increasing fluid intake is essential for managing constipation. Adequate hydration helps soften stool and promotes bowel movements. Choices A and B are incorrect as decreasing laxative use without medical advice and suggesting specific foods like oatmeal with stewed prunes may not be suitable for every individual with constipation. Choice D is also incorrect as while seeking help with meal preparation can indirectly aid in managing constipation, the immediate need is to increase fluid intake.
5. What should be the school nurse's first action after being notified that Child A has bitten Child B on the arm, resulting in broken skin but no bleeding?
- A. Apply antibiotic cream to Child B’s arm immediately
- B. Determine if Child A has a history of Hepatitis C or HIV
- C. Determine the date of Child B’s latest tetanus booster
- D. Wash Child B’s arm thoroughly with soap and water
Correct answer: D
Rationale: The correct first action for the school nurse to take in this situation is to wash Child B’s arm thoroughly with soap and water. Washing the wound immediately is crucial to reduce the risk of infection from the bite. Applying antibiotic cream may come after cleaning the wound. Determining Child A's medical history or checking Child B's tetanus status is important but not the immediate priority when dealing with a bite wound.
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