a heparin infusion is prescribed for a client who weighs 220 pounds after administering a bolus dose of 80 unitskg the nurse calculates the infusion r
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Nursing Elites

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?

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. To evaluate the client's therapeutic response to lactulose for signs of hepatic encephalopathy, which assessment should the nurse obtain?

Correct answer: A

Rationale: The correct answer is A: Level of consciousness. Monitoring the client's level of consciousness is essential in evaluating the effectiveness of lactulose in treating hepatic encephalopathy. Lactulose helps reduce blood ammonia levels by promoting the excretion of ammonia in the stool, thereby improving the client's mental status. Assessing the client's level of consciousness helps determine if the medication is effectively managing hepatic encephalopathy symptoms. Choices B, percussion of the abdomen, and D, blood glucose, are not directly related to evaluating the therapeutic response to lactulose for hepatic encephalopathy. Choice C, serum electrolytes, while important in overall patient care, is not the primary assessment to determine lactulose's effectiveness in treating hepatic encephalopathy.

3. 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?

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.

4. What information should the nurse include in the discharge teaching plan of a client with low back pain who is taking cyclobenzaprine to control muscle spasms?

Correct answer: C

Rationale: The correct answer is C: 'Use cold and allergy medications only as directed by a healthcare provider.' It is essential to inform the client not to self-medicate with cold and allergy medications or make changes without consulting a healthcare provider to prevent potential drug interactions or adverse effects. Choice A is incorrect because cyclobenzaprine can be taken with or without food, so there is no specific requirement to take it on an empty stomach. Choice B is incorrect because using heat or ice on injured muscles while taking cyclobenzaprine is generally safe and can help with symptom management. Choice D is also incorrect because discontinuing nonsteroidal anti-inflammatory medications should be done under the guidance of a healthcare provider, but it is not a direct concern related to taking cyclobenzaprine for muscle spasms.

5. The nurse is performing a peritoneal dialysis exchange on a client with chronic kidney disease (CKD). Which assessment finding should the nurse report to the healthcare provider?

Correct answer: A

Rationale: Cloudy dialysate fluid can indicate peritonitis, a serious complication of peritoneal dialysis. Peritonitis is an urgent condition that requires immediate evaluation and treatment. Reporting this finding promptly is crucial to prevent further complications. Choices B, C, and D are not indicative of peritonitis and do not require immediate reporting to the healthcare provider. Complaining of slight shortness of breath, having a greater return volume, and experiencing abdominal fullness and cramping are common occurrences during peritoneal dialysis and do not necessarily indicate an emergent issue.

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