HESI LPN
HESI CAT Exam 2022
1. In what sequence should the nurse prepare the dose of insulin for a client whose finger stick glucose is 210 mg/dl and is receiving a sliding scale dose of short-acting insulin before breakfast?
- A. Clean the vial's rubber stopper with an alcohol swab, withdraw the correct dose of insulin, and then inject air equal to the insulin dose into the vial.
- B. Inject air equal to the insulin dose into the vial, withdraw the correct dose of insulin, and then clean the vial's rubber stopper with an alcohol swab.
- C. Withdraw the correct dose of insulin, inject air equal to the insulin dose into the vial, and then clean the vial's rubber stopper with an alcohol swab.
- D. Clean the vial's rubber stopper with an alcohol swab, inject air equal to the insulin dose into the vial, and then withdraw the correct dose of insulin.
Correct answer: A
Rationale: The correct sequence for preparing a dose of insulin involves ensuring proper aseptic technique. First, clean the vial's rubber stopper with an alcohol swab to prevent contamination. Second, withdraw the correct dose of insulin to be administered. Lastly, inject air equal to the insulin dose into the vial to maintain proper pressure for withdrawing the medication. This sequence ensures the medication is prepared safely and accurately. Choice A is correct as it follows this sequence. Choices B, C, and D present incorrect sequences that may compromise patient safety by not following the correct aseptic technique. Choice B injects air into the vial before withdrawing insulin, which is incorrect. Choice C reverses the order of withdrawing insulin and injecting air. Choice D withdraws the insulin before injecting air, which can affect the pressure inside the vial and lead to inaccurate dosing.
2. A client who received multiple antihypertensive medications experiences syncope due to a drop in blood pressure to 70/40. What is the rationale for the nurse’s decision to hold the client’s scheduled antihypertensive medication?
- A. Increased urinary clearance of the multiple medications has led to diuresis and lowered the blood pressure.
- B. The antagonistic interaction among the various blood pressure medications has reduced their effectiveness.
- C. The additive effect of multiple medications has caused the blood pressure to drop too low.
- D. The synergistic effect of the multiple medications has resulted in drug toxicity and resulting hypotension.
Correct answer: C
Rationale: The correct answer is C. When a client experiences syncope due to a significant drop in blood pressure after receiving multiple antihypertensive medications, the additive effect of these medications can cause the blood pressure to drop excessively. This additive effect can lead to hypotension, which is why the nurse decided to hold the client's scheduled antihypertensive medication. Choices A, B, and D provide incorrect rationales. Choice A mentions diuresis, which is not directly related to the drop in blood pressure due to additive medication effects. Choice B refers to an antagonistic interaction reducing effectiveness, which is not applicable in this scenario. Choice D talks about a synergistic effect leading to drug toxicity, which is not the cause of the sudden drop in blood pressure observed in the client.
3. After a motor vehicle collision, a client is admitted to the medical unit with acute adrenal insufficiency (Addisonian crisis). Which prescription should the nurse implement?
- A. Determine serum glucose levels
- B. Withhold potassium additives to IV fluids
- C. Give IV corticosteroid replacement
- D. Prepare to initiate IV vasopressors
Correct answer: C
Rationale: In a client with acute adrenal insufficiency (Addisonian crisis) following a motor vehicle collision, the priority intervention is to administer IV corticosteroid replacement. This is crucial to manage the crisis by replacing the deficient cortisol. Determining serum glucose levels (Choice A) may be important but is not the immediate priority in this situation. Withholding potassium additives to IV fluids (Choice B) is not indicated and may exacerbate electrolyte imbalances. Initiating IV vasopressors (Choice D) is not the primary treatment for acute adrenal insufficiency and should be reserved for managing hypotension that is unresponsive to corticosteroid therapy.
4. A client who sustained a pellet gun injury with a resulting comminuted skull fracture is admitted overnight for observation. Which assessment finding obtained two hours after admission necessitates immediate intervention?
- A. The client complains of a throbbing headache rated 10 (on a scale of 1 to 10)
- B. The client repeatedly falls asleep while talking with the nurse
- C. The entry site has a slow trickle of bright red blood
- D. The entry site appears reddened and edematous
Correct answer: B
Rationale: In a client with a pellet gun injury and a comminuted skull fracture, repeatedly falling asleep while talking with the nurse is a concerning sign. It can indicate increased intracranial pressure or a deteriorating condition, requiring immediate intervention. The other options, such as a throbbing headache (choice A), slow trickle of bright red blood at the entry site (choice C), or reddened and edematous entry site (choice D), while important to monitor, do not directly indicate a need for immediate intervention as much as the client falling asleep repeatedly while talking does.
5. A female client is admitted for a diabetic crisis resulting from inadequate dietary practices. After stabilization, the nurse talks to the client about her prescribed diet. What client characteristic is most important for successful adherence to the diabetic diet?
- A. Understands the importance of timing insulin administration 30 minutes before eating
- B. Frequently includes fruits and vegetables in meals and snacks
- C. Has access to someone who can assist with meal preparation and monitoring
- D. Demonstrates willingness to consistently follow the prescribed diet
Correct answer: D
Rationale: The most crucial characteristic for successful adherence to a diabetic diet is the client's willingness to consistently follow the prescribed diet plan. Option A, understanding insulin timing, is important for treatment but not directly related to dietary adherence. Option B, consuming fruits and vegetables, is a healthy practice but does not ensure adherence to a specific diabetic diet. Option C, having assistance with meal preparation, is beneficial but not as essential as the client's personal commitment to adhering to the diet consistently.
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