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 3-year-old boy is brought to the emergency center with dysphagia, drooling, a fever of 102°F, and stridor. Which intervention should the nurse implement first?

Correct answer: A

Rationale: In a 3-year-old boy presenting with dysphagia, drooling, fever, and stridor, the priority intervention should be to place the child in a mist tent. This intervention helps alleviate respiratory distress, providing immediate relief. Options B, C, and D are not as urgent as ensuring the child's airway is managed effectively. Obtaining a sputum culture, preparing for a tracheostomy, and examining the oropharynx can be done after stabilizing the child's respiratory status.

3. The nurse is assessing a client who has a new cast on the left arm. Which finding should the nurse report to the healthcare provider immediately?

Correct answer: C

Rationale: Swelling of the fingers can indicate compromised circulation, which is a serious concern in a client with a new cast. It could suggest the development of compartment syndrome, a condition where increased pressure within the muscles can lead to impaired blood flow. This can result in tissue damage and should be addressed promptly. Itching under the cast, pain at the cast site, and warmth over the casted area are common findings after cast application and may not necessarily indicate an urgent issue requiring immediate reporting to the healthcare provider.

4. When caring for a laboring client whose contractions are occurring every 2-3 minutes, the nurse should document that the pump is infusing how many ml/hour?

Correct answer: A

Rationale: The correct calculation for infusion based on the given data is 5 ml/hr. To calculate the infusion rate per hour, you need to determine the number of contractions per hour. If contractions are occurring every 2-3 minutes, this would mean approximately 20-30 contractions per hour. Therefore, if the pump is infusing 5 ml per contraction, the total infusion rate per hour would be 5 ml x 20 contractions = 100 ml/hr. This makes choice A the correct answer. Choices B, C, and D are incorrect as they do not align with the calculation based on the given data.

5. 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.

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