HESI LPN
HESI CAT Exam
1. A client admitted to the intensive care unit with syndrome of inappropriate antidiuretic hormone (SIADH) has developed osmotic demyelination. Which intervention should the nurse implement first?
- A. Patch one eye.
- B. Reorient often.
- C. Range of motion.
- D. Evaluate swallow
Correct answer: B
Rationale: Frequent reorientation is crucial for clients with neurological impairments from osmotic demyelination to prevent confusion and assist with orientation. It helps maintain a proper sense of time, place, and person, reducing disorientation. Patching one eye (Choice A) is not a priority intervention for osmotic demyelination and does not address the immediate need for reorientation. Range of motion exercises (Choice C) may be important for overall care, but reorientation takes precedence due to its impact on neurological functioning. Evaluating swallow (Choice D) is not the primary intervention needed for osmotic demyelination; it is essential but not the first priority.
2. A heparin infusion is prescribed for a client who weighs 220 pounds. After administering a bolus dose of 80 units/kg, the nurse calculates the infusion rate for the heparin sodium at 18 units/kg/hour. The available solution is Heparin Sodium 25,000 units in 5% Dextrose Injection 250 ml. The nurse should program the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: B
Rationale: To calculate the infusion rate, first, find the total dose required per hour, which is the patient's weight (220 pounds) multiplied by the prescribed rate (18 units/kg/hour). This equals 3960 units/hour. Next, determine how many ml of the solution contain 25,000 units; this is 250 ml. Divide the total dose required per hour (3960 units) by the units per ml (25,000 units/250 ml) to find how many ml are needed per hour. This results in 27 ml/hour. Therefore, the nurse should program the infusion pump to deliver 27 ml/hour. Choice A (18) is incorrect as it does not account for the concentration of the heparin solution. Choices C (36) and D (45) are incorrect as they do not reflect the accurate calculations based on the patient's weight and the heparin concentration in the solution.
3. Based on the information provided in this client’s medical record during labor, which intervention should the nurse implement?
- A. Apply oxygen at 10 L per minute via mask
- B. Stop the oxytocin infusion
- C. Turn the client to the right lateral position
- D. Continue monitoring the progress of labor
Correct answer: C
Rationale: Turning the client to the right lateral position is essential as it can improve fetal oxygenation and uterine blood flow, promoting better labor outcomes. This intervention helps relieve pressure on blood vessels, enhancing blood flow to the placenta and improving oxygen supply to the fetus. Applying oxygen at a specific rate may not address the underlying issue of compromised blood flow and oxygenation. Stopping the oxytocin infusion is not the priority unless medically indicated as it can affect labor progression. While monitoring the progress of labor is important, actively addressing the compromised fetal oxygenation and uterine blood flow by changing the client's position takes precedence in this scenario.
4. A client with major depression who is taking fluoxetine calls the psychiatric clinic reporting being more agitated, irritable, and anxious than usual. Which intervention should the nurse implement?
- A. Tell the client to have a complete blood count (CBC) drawn
- B. Instruct the client to seek medical attention immediately
- C. Encourage them to take the medication at night with a snack
- D. Explain that these are common side effects of the medication
Correct answer: B
Rationale: Increased agitation, irritability, and anxiety can be signs of serotonin syndrome or other serious side effects, not common side effects of fluoxetine. Instructing the client to seek medical attention immediately is crucial to address any potential serious adverse reactions. Option A is unnecessary as a CBC would not address the symptoms described. Option C is not the priority when serious side effects are suspected. Option D is incorrect as these symptoms should not be dismissed as common side effects.
5. A client who is bleeding after a vaginal delivery receives a prescription for methylergonovine (Methergine) 0.4 mg IM every 2 hours, not to exceed 5 doses. The medication is available in ampules containing 0.2 mg/ml. What is the maximum dosage in mg that the nurse should administer to this client? (Enter numeric value only)
- A. 2
- B. 3
- C. 4
- D. 5
Correct answer: A
Rationale: To calculate the maximum dosage in mg that the nurse should administer, multiply the dose per administration (0.4 mg) by the maximum number of doses allowed (5 doses): 0.4 mg/dose * 5 doses = 2 mg. Therefore, the nurse should administer a maximum dosage of 2 mg to the client. Choices B, C, and D are incorrect as they do not reflect the correct calculation based on the provided information.
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