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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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. A male client who fell into the lake while fishing and was submerged for about 3 min was successfully resuscitated by his friends. He was brought to the Emergency Department for evaluation and was admitted for a 24-hour uneventful hospital stay. What follow-up instruction should the nurse give?

Correct answer: B

Rationale: After being submerged in water, the client should be instructed to seek medical care promptly if a fever develops since complications may arise later. Choices A, C, and D are not directly related to the potential complications from submersion in water and are therefore incorrect. Avoiding smoke-filled environments, increasing oral fluids for a productive cough, and scheduling frequent rest periods are not the priority concerns in this scenario.

3. Which behavior is most likely to result in a breach of client confidentiality?

Correct answer: B

Rationale: The correct answer is B. Discussing client information in a public area, such as a cafeteria, may lead to breaches of confidentiality. Choice A involves discussing a client's condition in a professional setting, which is not likely to result in a breach as it is for educational purposes. Choice C involves nursing students discussing their assigned client's conditions, which is common in a learning environment and not necessarily a breach of confidentiality. Choice D involves a private conversation between healthcare professionals, which is less likely to result in a breach compared to discussing in a public area like a cafeteria where non-authorized individuals may overhear the conversation.

4. A 70-year-old client is admitted to the hospital after 24 hours of acute diarrhea. To determine fluid status, which initial data is most important for the nurse to obtain?

Correct answer: A

Rationale: The correct answer is A: Usual and current weight. Weight changes are the most direct indicator of fluid status in a patient with acute diarrhea. Monitoring weight loss or gain can provide crucial information about fluid balance. Option B, color and amount of urine, though important for assessing renal function, is not as direct an indicator of fluid status as weight. Option C, number and frequency of stools, is relevant for assessing the severity of diarrhea but does not provide direct information on fluid status. Option D, intake and output 24 hours prior to admission, does not reflect the current fluid status and may not be accurate in a rapidly changing condition like acute diarrhea.

5. A client is being treated for minor injuries following an automobile accident in which the only other passenger was killed. The client asks the nurse, 'Is my friend who was in the car with me ok?' What response is best for the nurse to provide?

Correct answer: A

Rationale: The correct answer is A: 'I am sorry, but your friend was killed in the accident.' In this situation, honesty and compassion are essential. The nurse should provide the client with truthful information, acknowledging the client's need to know the reality of the situation. Choice B is dismissive and does not address the client's inquiry directly. Choice C is a deflecting question and does not offer the direct information the client is seeking. Choice D provides false reassurance, which is not appropriate in this circumstance where the reality needs to be communicated.

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