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. Several clients on a busy antepartum unit are scheduled for procedures that require informed consent. Which situation should the nurse explore further before witnessing the client's signature on the consent form?
- A. The client was medicated for pain with a narcotic analgesic IM 6 hours ago
- B. A 15-year-old primigravida who has been self-supporting for the past 6 months
- C. The obstetrician explained a procedure that a neurologist will perform
- D. The client is illiterate but verbalizes understanding and consent for the procedure
Correct answer: D
Rationale: The correct answer is D because an illiterate client may require additional support to ensure they fully comprehend the information provided in the informed consent process. It is crucial to confirm that the client truly understands the nature of the procedure, its risks, and benefits. While it is important to assess pain control (choice A), a client's previous medication administration does not directly impact their ability to understand the consent process. Choice B, a 15-year-old primigravida who has been self-supporting, may legally provide informed consent depending on the jurisdiction and circumstances, so this situation may not require further exploration. Choice C, explaining a procedure by a different specialist, does not necessarily require additional exploration before witnessing the client's consent.
3. When a UAP reports to the charge nurse that a client has a weak pulse with a rate of 44 beats per minute, what action should the charge nurse implement?
- A. Instruct the UAP to count the client's apical pulse rate for sixty seconds.
- B. Determine if the UAP also measured the client's capillary refill time.
- C. Assign a practical nurse (LPN) to determine if an apical radial pulse deficit is present.
- D. Notify the health care provider of the abnormal pulse rate and pulse volume.
Correct answer: D
Rationale: The correct action for the charge nurse to implement is to notify the health care provider of the abnormal pulse rate and pulse volume. A weak pulse with bradycardia (pulse rate of 44 beats per minute) requires immediate follow-up to investigate potential underlying issues. In this situation, it is crucial to involve the healthcare provider for further assessment and intervention. Instructing the UAP to count the client's apical pulse rate for sixty seconds (Choice A) may delay necessary actions. Determining capillary refill time (Choice B) is not directly related to addressing a weak pulse, and assigning an LPN to assess an apical radial pulse deficit (Choice C) is not as urgent as involving the healthcare provider.
4. When caring for a client with Cushing syndrome, which serum laboratory value is most important for the nurse to monitor?
- A. Lactate
- B. Glucose
- C. Hemoglobin
- D. Creatinine
Correct answer: B
Rationale: When caring for a client with Cushing syndrome, monitoring glucose levels is crucial as Cushing syndrome often leads to hyperglycemia. Elevated glucose levels are a common manifestation of Cushing syndrome due to increased cortisol levels. Monitoring glucose helps in assessing and managing the client's condition effectively. Lactate levels are not typically affected by Cushing syndrome. Hemoglobin and creatinine levels are important for other conditions like anemia and kidney function, but they are not the priority in Cushing syndrome.
5. A client with a history of myocardial infarction (MI) is receiving a beta-blocker medication. What is the most important outcome for the nurse to monitor?
- A. Heart rate and blood pressure
- B. Blood glucose levels
- C. Respiratory rate
- D. Liver function tests
Correct answer: A
Rationale: The correct answer is A: Heart rate and blood pressure. When a client with a history of myocardial infarction (MI) is on a beta-blocker medication, monitoring heart rate and blood pressure is crucial. Beta-blockers lower heart rate and blood pressure, so monitoring these parameters helps assess the medication's effectiveness and prevent complications like bradycardia or hypotension. Choices B, C, and D are not the most important outcomes to monitor in this scenario. Blood glucose levels are typically monitored in clients with diabetes or when using medications that affect glucose levels. Respiratory rate is important in assessing respiratory function and oxygenation, while liver function tests are more relevant when monitoring the impact of medications on liver health.
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