Nursing Elites

1. Prior to administering warfarin to a client with a history of atrial fibrillation, what lab result should the nurse review?

• A. White blood cell count.
• B. Prothrombin time (PT) and International Normalized Ratio (INR).
• C. Hemoglobin and hematocrit.
• D. Blood urea nitrogen (BUN) and creatinine.

Correct answer: B

Rationale: The correct answer is B: Prothrombin time (PT) and International Normalized Ratio (INR). These lab values are crucial for monitoring the effectiveness of warfarin, an anticoagulant medication. PT measures the time it takes for blood to clot, while INR standardizes these results. Ensuring the client's PT/INR levels are within the therapeutic range is essential to prevent clotting or excessive bleeding. Choices A, C, and D are incorrect as they are not directly related to monitoring warfarin therapy in a client with atrial fibrillation.

2. A client with a history of atrial fibrillation is prescribed warfarin. What is the nurse's priority teaching?

• A. Avoid eating foods high in potassium.
• B. Avoid foods high in vitamin K.
• C. Take the medication on an empty stomach.
• D. Take the medication at bedtime for best results.

Correct answer: B

Rationale: The correct answer is B: 'Avoid foods high in vitamin K.' Warfarin is an anticoagulant medication that works by interfering with vitamin K-dependent clotting factors. Therefore, consuming foods high in vitamin K can affect the medication's effectiveness. Choices A, C, and D are incorrect because: A) Warfarin is not affected by foods high in potassium; C) Warfarin should be taken with food to minimize gastrointestinal side effects; D) There is no specific requirement for taking warfarin at bedtime for best results.

3. What pathophysiological events occur sequentially in the development of atherosclerosis?

• A. Foam cells release growth factors.
• B. Smooth muscle grows over fatty streaks creating fibrous plaques.
• C. Macrophages consume low-density lipoprotein (LDL) and create foam cells.
• D. Arterial endothelium injury causes inflammation.

Correct answer: D

Rationale: The correct sequence of pathophysiological events in the development of atherosclerosis starts with arterial endothelium injury causing inflammation. This inflammation triggers the formation of foam cells by macrophages consuming low-density lipoprotein (LDL). Subsequently, smooth muscle grows over fatty streaks, creating fibrous plaques. Therefore, option D is the correct answer. Choices A, B, and C are incorrect because they do not reflect the accurate chronological order of events in the pathogenesis of atherosclerosis.

4. A client reports that the skin around the edges of a wound is red and swollen. What is the nurse's priority intervention?

• A. Monitor for signs of infection
• B. Reinforce the wound dressing
• C. Contact the healthcare provider
• D. Apply a warm compress to the wound

Correct answer: A

Rationale: The correct answer is to monitor for signs of infection. Redness and swelling around a wound are indicative of a potential infection. The priority intervention for the nurse is to closely monitor the wound for further signs of infection, such as increased drainage or fever. Reinforcing the wound dressing may be necessary, but it is not the priority when infection is suspected. Contacting the healthcare provider is important, but the nurse should first assess and monitor the wound to provide comprehensive information when contacting the provider. Applying a warm compress can potentially worsen the infection by promoting bacterial growth, so it is contraindicated in this situation.

5. A client with atrial fibrillation is prescribed warfarin, and their INR is elevated. What is the nurse's priority action?

• A. Administer a dose of vitamin K to reverse the effects of warfarin.
• B. Monitor the client for signs of bleeding, such as bruising or nosebleeds.
• C. Increase the client’s warfarin dosage to prevent clot formation.
• D. Notify the healthcare provider immediately and hold the next dose of warfarin.

Correct answer: D

Rationale: An elevated INR in clients taking warfarin increases the risk of bleeding, indicating the dose may be too high. The nurse's priority action is to notify the healthcare provider immediately and hold the next dose of warfarin to prevent bleeding complications. Administering vitamin K is not the first-line intervention for an elevated INR. Monitoring for signs of bleeding is important but not the priority over contacting the healthcare provider. Increasing the warfarin dosage can exacerbate the risk of bleeding and is contraindicated.

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