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 is leaving the hospital against medical advice (AMA) and voluntarily signs the AMA form. Which nursing action is essential prior to the client leaving?

Correct answer: A

Rationale: Removing the client's peripheral IV access is essential before the client leaves against medical advice to prevent complications such as infection, thrombosis, or bleeding. Administering pain relief medication (choice B) can be important but not essential at this point. Obtaining neurological vital signs (choice C) is not specifically required before the client leaves. Providing the client with the hospital's phone number (choice D) may be helpful but is not as essential as ensuring the safe removal of IV access.

3. A client with an electrical burn on the forearm asks the nurse why there is no feeling of pain from the burn. During the dressing change, the nurse determines that the burn is dry, waxy, and white. What information should the nurse provide this client?

Correct answer: C

Rationale: The correct answer is C: 'The full thickness burn has destroyed the nerves.' In full thickness burns, also known as third-degree burns, the nerve endings are destroyed, leading to a lack of pain sensation at the site of the burn. The description of the burn as dry, waxy, and white indicates a full thickness burn. Choices A, B, and D are incorrect because they do not explain the absence of pain in full thickness burns. Choice A is incorrect as a full-thickness burn involves significant tissue destruction. Choice B is incorrect because nerve compression would not explain the lack of pain in this context. Choice D is incorrect because second-degree burns, unlike full-thickness burns, are painful due to nerve endings being intact.

4. The nurse is caring for a client who has a chest tube in place following a pneumothorax. The nurse notes that there is continuous bubbling in the water seal chamber of the chest tube drainage system. What action should the nurse take?

Correct answer: B

Rationale: The correct action for the nurse to take when observing continuous bubbling in the water seal chamber of the chest tube drainage system is to notify the healthcare provider. Continuous bubbling indicates a possible air leak, and the healthcare provider needs to be informed to assess the situation and take appropriate actions. Checking for kinks in the tubing (Choice A) may be done initially but is not the priority when continuous bubbling is present. Replacing the chest tube drainage system (Choice C) and reinforcing the chest tube dressing (Choice D) are not immediate actions needed in response to continuous bubbling in the water seal chamber.

5. The nurse is caring for a client with a diagnosis of pneumonia who has been febrile for 24 hours. Which data is most important for the nurse to obtain in determining the client's fluid status?

Correct answer: C

Rationale: Daily weight is the most important data for the nurse to obtain in determining the client's fluid status in this scenario. During febrile episodes, assessing daily weight is crucial as it can indicate fluid retention or loss. While monitoring intake and output is important for assessing fluid balance, daily weight provides a more comprehensive picture of fluid status over time. Skin turgor is more indicative of hydration status than overall fluid status, and vital signs, although essential, do not directly assess fluid status as effectively as daily weight.

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