a client who has a new prescription for warfarin coumadin asks the nurse how the medication works what explanation should the nurse provide
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Nursing Elites

HESI RN

HESI RN CAT Exit Exam

1. A client who has a new prescription for warfarin (Coumadin) asks the nurse how the medication works. What explanation should the nurse provide?

Correct answer: B

Rationale: The correct answer is B: 'It prevents the blood from clotting.' Warfarin works by inhibiting the synthesis of vitamin K-dependent clotting factors in the liver, thereby preventing the formation of blood clots. Choice A is incorrect because warfarin does not dissolve existing blood clots but prevents new ones from forming. Choice C is partially correct but not as specific as choice B in explaining how warfarin works. Choice D is unrelated to the mechanism of action of warfarin and is incorrect.

2. A client with a small bowel obstruction is experiencing frequent vomiting. Which instructions are most important for the nurse to provide to the unlicensed assistive personnel (UAP) who is completing morning care for this client?

Correct answer: D

Rationale: The correct answer is D, 'Measure all emesis accurately.' When a client with a small bowel obstruction is experiencing frequent vomiting, measuring emesis accurately is crucial for monitoring fluid balance and preventing dehydration. Choice A, 'Maintain a quiet environment,' while important for patient comfort, is not as critical as accurately measuring emesis. Choices B and C, 'Ensure the linens are clean and dry' and 'Place an air deodorizer in the room,' focus on environmental factors that, although helpful, are not as essential as monitoring the client's fluid balance in this situation.

3. A 9-year-old boy with tetralogy of Fallot is being discharged following a cardiac catheterization. Which discharge instruction should the nurse provide the parents?

Correct answer: B

Rationale: The correct answer is to notify the healthcare provider if there is any drainage at the catheterization site. Drainage at the site can be a sign of infection, which needs prompt evaluation and treatment. Choices A, C, and D are not as crucial as identifying and reporting any drainage, which is more directly related to potential complications post-cardiac catheterization.

4. A nurse is planning care for a client who is at risk for developing deep vein thrombosis (DVT). Which intervention should the nurse include in this client's plan of care?

Correct answer: C

Rationale: The correct intervention for a client at risk for developing deep vein thrombosis (DVT) is to encourage early ambulation. Early ambulation helps prevent DVT by promoting circulation, reducing stasis, and preventing blood clot formation. Maintaining the client on bed rest (Choice A) would increase the risk of DVT due to decreased mobility. Applying warm, moist compresses to the legs (Choice B) can be beneficial for other conditions but does not directly prevent DVT. Massaging the legs daily (Choice D) can dislodge a blood clot, leading to serious complications in a client at risk for DVT.

5. Which instruction should the nurse provide to an elderly client who is taking an ACE inhibitor and a calcium channel blocker?

Correct answer: D

Rationale: The correct instruction for an elderly client taking both an ACE inhibitor and a calcium channel blocker is to change positions slowly. Both medications can lead to orthostatic hypotension, a sudden drop in blood pressure when changing positions, which can increase the risk of falls. Instructing the client to change positions slowly helps prevent falls. Wearing long-sleeved clothing when outdoors does not directly relate to the medication combination. Reporting the onset of a sore throat is important for monitoring potential side effects but is not specific to these medications. While potassium levels should be monitored with ACE inhibitors, eating plenty of potassium-rich foods without guidance can lead to hyperkalemia, a potential side effect of ACE inhibitors.

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