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. When a UAP reports to the charge nurse that a client has a weak pulse with a rate of 44 beats per minute, what action should the charge nurse implement?
- A. Instruct the UAP to count the client's apical pulse rate for sixty seconds.
- B. Determine if the UAP also measured the client's capillary refill time.
- C. Assign a practical nurse (LPN) to determine if an apical radial pulse deficit is present.
- D. Notify the health care provider of the abnormal pulse rate and pulse volume.
Correct answer: D
Rationale: The correct action for the charge nurse to implement is to notify the health care provider of the abnormal pulse rate and pulse volume. A weak pulse with bradycardia (pulse rate of 44 beats per minute) requires immediate follow-up to investigate potential underlying issues. In this situation, it is crucial to involve the healthcare provider for further assessment and intervention. Instructing the UAP to count the client's apical pulse rate for sixty seconds (Choice A) may delay necessary actions. Determining capillary refill time (Choice B) is not directly related to addressing a weak pulse, and assigning an LPN to assess an apical radial pulse deficit (Choice C) is not as urgent as involving the healthcare provider.
3. Which instruction is most important for the client who receives a new prescription for risedronate sodium to treat osteoporosis?
- A. Remain upright for 30 minutes after taking the medication
- B. Increase intake of foods rich in vitamin D
- C. Begin a low-impact exercise routine
- D. Take the medication with a full glass of water
Correct answer: A
Rationale: The most important instruction for a client receiving risedronate sodium to treat osteoporosis is to remain upright for 30 minutes after taking the medication. Risedronate sodium can cause esophageal irritation, and staying upright helps prevent this side effect. While increasing vitamin D intake, starting a low-impact exercise routine, and taking the medication with a full glass of water are all beneficial for managing osteoporosis, the immediate need is to prevent esophageal irritation caused by risedronate sodium.
4. 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.
5. After medicating the client for pain and collecting granules and stones from strained urine, which action is most important for the nurse to implement next?
- A. Send the calculi for laboratory analysis of stone composition.
- B. Evaluate the client for persistent pain.
- C. Assess the clarity of urine.
- D. Encourage high fluid intake to produce urine output of 2L/day.
Correct answer: A
Rationale: Sending the calculi for analysis is crucial in determining the type of stone present. Identifying the stone composition helps in developing an effective treatment plan and preventive measures to avoid future episodes of urolithiasis. This step is essential in providing targeted care for the client. Options B, C, and D are not the most important actions at this point. While evaluating for persistent pain is essential, determining the stone composition takes precedence to guide appropriate interventions.
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