HESI LPN
CAT Exam Practice Test
1. A client is admitted to the hospital with a serum sodium level of 128 mEq/L, distended neck veins, and lung crackles. What intervention should the nurse implement?
- A. Increase the intake of salty foods
- B. Administer NaCl supplements
- C. Restrict oral fluid intake
- D. Hold the client's loop diuretic
Correct answer: C
Rationale: In the scenario described, the client presents with signs of fluid overload and hyponatremia. Restricting oral fluid intake is the appropriate intervention to manage fluid overload and correct hyponatremia. Increasing the intake of salty foods (Choice A) and administering NaCl supplements (Choice B) would exacerbate the sodium imbalance. Holding the client's loop diuretic (Choice D) is not directly related to addressing the fluid overload and hyponatremia.
2. A client is receiving lidocaine IV at 3 mg/minute. The pharmacy dispenses a 500 ml IV solution of normal saline (NS) with 2 grams of lidocaine. The nurse should regulate the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: D
Rationale: The infusion rate is calculated based on the concentration of lidocaine and the prescribed rate of infusion. First, convert lidocaine's weight to milligrams (2 grams = 2000 mg). Then, use the formula: (Total volume in ml * dose in mg) / 60 minutes. For this case, (500 ml * 2000 mg) / 60 minutes = 45 ml/hour. Therefore, the correct answer is D. Choices A, B, and C are incorrect as they do not reflect the accurate calculation based on the provided concentration and infusion rate.
3. The nurse assesses a 5-year-old child who has been experiencing frequent headaches and vomiting. The nurse notices that the child is lethargic and has a positive Brudzinski sign. Which action should the nurse implement first?
- A. Perform a complete neurological examination
- B. Measure the child’s head circumference
- C. Check the child’s blood glucose level
- D. Notify the healthcare provider immediately
Correct answer: D
Rationale: The correct action for the nurse to implement first is to notify the healthcare provider immediately. The presence of lethargy and a positive Brudzinski sign in a child experiencing frequent headaches and vomiting may indicate a serious condition like meningitis. Prompt notification of the healthcare provider is crucial for timely evaluation and initiation of appropriate treatment. Choice A is incorrect because while a neurological examination may be necessary, it is not the priority when a potentially serious condition like meningitis is suspected. Choice B is incorrect as measuring the child's head circumference is not the most immediate action to take in this situation. Choice C is also incorrect as checking the child's blood glucose level, although important in some cases, is not the priority when a child presents with symptoms suggestive of meningitis.
4. The nurse is caring for a laboring 22-year-old primigravida following administration of regional anesthesia. In planning care for this client, what nursing intervention has the highest priority?
- A. Raising the side rails and placing the call bell within reach
- B. Teaching the client how to push to decrease the length of the second stage of labor
- C. Timing and recording uterine contractions
- D. Positioning the client for proper distribution of anesthesia
Correct answer: D
Rationale: The highest priority nursing intervention for a laboring client following administration of regional anesthesia is to position the client for proper distribution of anesthesia. Proper positioning ensures effective pain management during labor, optimizing the effects of the regional anesthesia. While raising the side rails and placing the call bell within reach (choice A) is important for safety, teaching the client how to push (choice B) and timing and recording uterine contractions (choice C) are vital aspects of care but are not the highest priority immediately after administering regional anesthesia.
5. A client with leukemia who is receiving myelosuppressive chemotherapy has a platelet count of 25,000/mm3. Which intervention is most important for the nurse to include in this client’s plan of care?
- A. Monitor for signs of activity intolerance
- B. Require visitors to wear respiratory masks
- C. Assess urine and stool for occult blood
- D. Obtain client’s temperature q4 hours
Correct answer: C
Rationale: The correct answer is to assess urine and stool for occult blood. With a low platelet count, there is an increased risk of bleeding. Monitoring for occult blood is essential to detect any signs of internal bleeding. Choices A, B, and D are not the priority interventions in this situation. While monitoring for signs of activity intolerance, requiring visitors to wear respiratory masks, and obtaining the client's temperature are important aspects of care, they are not as critical as assessing for occult blood in a client with a low platelet count.
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