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 nurse is caring for a client with a new colostomy. Which instruction should the nurse include in the client's teaching plan?

Correct answer: B

Rationale: The correct instruction the nurse should include in the client's teaching plan is to empty the ostomy pouch when it is one-third full. This practice helps prevent leakage and skin irritation by maintaining an appropriate pouching system. Changing the ostomy appliance daily (Choice A) is not necessary unless leakage or other issues occur. Rinsing the ostomy pouch with warm water (Choice C) is not a recommended practice as it may cause damage to the pouch. Applying a skin barrier to the peristomal skin (Choice D) is important but not the most crucial instruction in this scenario.

3. The mother of a 6-year-old anemic boy is taught by the nurse to give iron supplements. Which statement indicates that the mother understands the proper administration of iron?

Correct answer: A

Rationale: The correct answer is A because iron supplements are best absorbed on an empty stomach, which maximizes their effectiveness. Giving iron tablets with milk or calcium-rich foods, as mentioned in choice B, should be avoided as they can decrease iron absorption. Choice C is incorrect because iron preparations should not be taken with antibiotics due to potential interactions. Choice D is also incorrect as iron tablets do not cause an increased risk of sunburn, so sunscreen is not necessary specifically due to iron supplementation.

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. A client who is bleeding after a vaginal delivery receives a prescription for methylergonovine (Methergine) 0.4 mg IM every 2 hours, not to exceed 5 doses. The medication is available in ampules containing 0.2 mg/ml. What is the maximum dosage in mg that the nurse should administer to this client?

Correct answer: D

Rationale: The maximum dosage the nurse should administer is 2 mg. This is calculated based on the prescription of 0.4 mg IM every 2 hours, not to exceed 5 doses. Since the medication is available in ampules containing 0.2 mg/ml, the nurse should administer 2 ml (0.2 mg/ml x 10 ml) for each dose, not exceeding 5 doses. Therefore, the nurse should limit the client's oral intake to 900 to 1,000 ml, to avoid exceeding the maximum dosage of 2 mg.

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