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. In a client in her third trimester of pregnancy, an S3 heart sound is auscultated. What intervention should the nurse take?
- A. Notify the healthcare provider
- B. Limit the client’s fluids
- C. Prepare the client for an echocardiogram
- D. Document in the client’s record
Correct answer: D
Rationale: An S3 heart sound can be a normal finding in pregnancy due to increased blood volume and flow. In this scenario, there is no immediate need for further interventions. Documenting this finding in the client's record is essential for tracking the client's health status and ensuring proper follow-up if needed. Notifying the healthcare provider, limiting fluids, or preparing for an echocardiogram is unnecessary as it is likely a physiological finding in pregnancy. These interventions should only be considered if other symptoms suggestive of a cardiac issue are present.
3. The healthcare provider changes a client’s medication prescription from IV to PO administration and doubles the dose. The nurse notes in the drug guide that the prescribed medication, when given orally, has a high first-pass effect and reduces bioavailability. What action should the nurse implement?
- A. Continue administering the medication via the IV route.
- B. Give half the prescribed oral dose until consulting the provider.
- C. Administer the medication orally as prescribed.
- D. Consult with the pharmacist regarding the prescription change.
Correct answer: D
Rationale: The correct action for the nurse to implement is to consult with the pharmacist regarding the change in prescription. With the high first-pass effect of the medication when given orally, it reduces its bioavailability, meaning a dosage adjustment may be necessary to achieve the desired therapeutic effect. Continuing to administer the medication via the IV route (choice A) is not appropriate as the prescription has been changed to oral administration. Giving half the prescribed oral dose until consulting the provider (choice B) is not recommended without proper guidance, which should come from consulting with the pharmacist. Simply administering the medication orally as prescribed (choice C) without addressing the potential issue of reduced bioavailability may lead to suboptimal treatment outcomes.
4. When caring for a laboring client whose contractions are occurring every 2 to 3 minutes, the nurse should document that the pump is infusing how many ml/hour? (Enter numeric value only. If rounding is required, round to the nearest whole number. Click on each chart tab for additional information. Please be sure to scroll to the bottom right corner of each tab to view all information contained in the client’s medical record.)
- A. 42
- B. 38
- C. 48
- D. 50
Correct answer: A
Rationale: By calculating the infusion rate based on the given chart information, the correct value is 42 ml/hr. This rate ensures proper fluid administration to the laboring client. Choices B (38), C (48), and D (50) are incorrect as they do not align with the calculated infusion rate needed for the client's condition, as per the chart data provided.
5. A client collapses while showering and is found by the nurse while making rounds. The client is not breathing and does not have a palpable pulse. The nurse obtains the Automated External Defibrillator (AED). What action should the nurse implement next?
- A. Follow the prompts of the AED
- B. Apply the AED pads to the client’s chest
- C. Wipe the client’s chest dry
- D. Move the client from the bathroom
Correct answer: B
Rationale: Applying the AED pads is the immediate next step after obtaining the AED in a cardiac arrest situation. Placing the pads correctly on the client's chest is crucial for the AED to analyze the heart rhythm accurately and deliver a shock if needed. Following the prompts of the AED comes after the pads are in place. Wiping the client's chest dry or moving the client from the bathroom are not priorities at this critical moment and may delay life-saving interventions.
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