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 diagnosed with a deep vein thrombus (DVT) followed by a diagnosis of pulmonary embolism (PE) is receiving heparin via an infusion pump at a rate of 1400 u/hour. The client tells the nurse, 'I wish this medicine would hurry up and dissolve this clot in my lung so that I can go home'. What response is best for the nurse to provide?

Correct answer: A

Rationale: Choice A is the best response because it educates the client about the role of heparin in preventing future clot formation rather than dissolving the existing clot. This helps the client understand the medication's function and the importance of closely monitoring for signs of bleeding, a common side effect of heparin therapy. Choice B acknowledges the client's concern but does not provide accurate information about heparin's mechanism of action. Choice C is premature as it suggests transitioning to home therapy without addressing the client's concerns or explaining heparin's purpose. Choice D does not address the client's statement and instead questions their desire to leave the hospital.

3. The nurse is preparing to administer an IM injection to a 6-month-old child. Which injection site is best for the nurse to use?

Correct answer: A

Rationale: The vastus lateralis is the preferred site for IM injections in infants due to muscle development. In infants under 1 year old, the vastus lateralis muscle in the thigh is often used for IM injections due to its size and development. The deltoid muscle is typically used for adults, and the ventrogluteal and dorsogluteal sites are more commonly used for older children and adults. Therefore, the best choice for administering an IM injection to a 6-month-old child is the vastus lateralis.

4. A client with a history of heart failure is admitted to the hospital with worsening dyspnea. The nurse notes that the client has a productive cough with pink, frothy sputum. What action should the nurse take first?

Correct answer: A

Rationale: In a client with heart failure presenting with worsening dyspnea and pink, frothy sputum (indicating pulmonary edema), the priority action for the nurse is to administer oxygen. Oxygen therapy helps improve oxygenation and alleviate dyspnea by increasing the oxygen supply to the lungs. Performing chest physiotherapy, elevating the head of the bed, or obtaining a sputum specimen are not the initial actions indicated in this situation and may delay addressing the client's immediate need for improved oxygenation.

5. A nurse is preparing to insert an indwelling urinary catheter in a female client. Which action should the nurse take to maintain sterile technique?

Correct answer: B

Rationale: Using sterile gloves to insert the catheter is crucial to maintaining sterile technique. Sterile gloves help prevent the introduction of microorganisms during the insertion process. Applying sterile gloves before cleansing the perineal area (Choice A) is important but not specific to maintaining sterility during catheter insertion. Cleaning the urinary meatus with an antiseptic solution (Choice C) is a step in the catheterization process but does not solely ensure sterile technique. Placing the drainage bag above the level of the bladder (Choice D) is incorrect; the bag should be placed below the level of the bladder to facilitate urine drainage.

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