HESI LPN
CAT Exam Practice Test
1. 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.
2. A client who is scheduled to have surgery in two hours tells the nurse, 'My doctor was here and used a lot of big words about the surgery, then asked me to sign a paper.' What action should the nurse take?
- A. Reassure the client that pre-surgery anxiety is a normal experience
- B. Explain the surgery in clear terms that the client can understand
- C. Call the surgeon back to clarify the information with the client
- D. Redirect the client’s thoughts by teaching relaxation techniques
Correct answer: B
Rationale: The correct action for the nurse to take in this situation is to explain the surgery to the client in clear terms that they can understand. This will help alleviate the client's anxiety and ensure they are well-informed about the procedure they are about to undergo. Choice A is incorrect because while reassurance is important, it does not address the client's specific concern about understanding the surgery. Choice C is not the initial step; the nurse should first attempt to clarify the information themselves. Choice D is not the priority when the client is seeking clarification about the surgery.
3. What nursing intervention is particularly indicated for the second stage of labor?
- A. Providing pain medication to increase the client’s tolerance of labor
- B. Assessing the fetal heart rate and pattern for signs of fetal distress
- C. Monitoring effects of oxytocin administration to help achieve cervical dilation
- D. Assisting the client to push effectively so that the expulsion of the fetus can be achieved
Correct answer: D
Rationale: During the second stage of labor, assisting the client to push effectively is crucial for the delivery of the fetus. This action helps to facilitate the expulsion of the fetus from the uterus. Providing pain medication (Choice A) is not typically done during the second stage of labor as the focus shifts to pushing and delivery. Assessing the fetal heart rate (Choice B) is important but is more relevant throughout labor, not specifically for the second stage. Monitoring the effects of oxytocin administration (Choice C) is more associated with the first stage of labor to help with uterine contractions and cervical dilation.
4. When administering ceftriaxone sodium intravenously to a client before surgery, which assessment finding requires the most immediate intervention by the nurse?
- A. Headache
- B. Pruritus
- C. Nausea
- D. Stridor
Correct answer: D
Rationale: Stridor is a high-pitched, noisy breathing sound that can indicate a serious condition like airway obstruction or a severe allergic reaction, necessitating immediate intervention to maintain the client's airway and prevent further complications. While headache, pruritus, and nausea are important to assess and manage, they are not as immediately life-threatening as stridor, which requires prompt attention to prevent respiratory compromise.
5. A young adult who is hit with a baseball bat on the temporal area of the left skull is conscious when admitted to the ED and is transferred to the Neurological Unit to be monitored for signs of closed head injury. Which assessment finding is indicative of a developing epidural hematoma?
- A. Altered consciousness within the first 24 hours after injury
- B. Confusion immediately following the injury
- C. Headache that resolves quickly
- D. Brief loss of consciousness with a lucid interval
Correct answer: A
Rationale: The correct answer is A. Epidural hematoma often presents with a brief loss of consciousness followed by a lucid interval and then a rapid decline in consciousness. Therefore, altered consciousness within the first 24 hours after the injury is indicative of a developing epidural hematoma. Choices B, C, and D are incorrect because confusion immediately following the injury, headache that resolves quickly, and brief loss of consciousness with a lucid interval are not specific signs of epidural hematoma.
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