Correct Answer: A

Rationale: The correct answer is to monitor potassium levels in a patient receiving digoxin. Hypokalemia can potentiate the toxic effects of digoxin, leading to serious cardiac arrhythmias. Monitoring potassium levels helps prevent toxicity. Monitoring sodium levels (Choice B), calcium levels (Choice C), and magnesium levels (Choice D) are also important aspects of patient care, but potassium levels are most critical in patients on digoxin therapy.

Correct Answer: A

Rationale: The correct answer is A: Monitor daily weight. Daily weight monitoring is the most accurate method to assess fluid overload in patients with heart failure. Changes in weight can indicate fluid retention before visible signs like jugular vein distention or pitting edema appear. Checking for jugular vein distention (choice B) is helpful but may not be as sensitive as daily weight monitoring. Pitting edema (choice C) and fluid retention (choice D) are signs of fluid overload, but daily weight monitoring is a more proactive approach to detect changes early.

Correct Answer: C

Rationale: The correct answer is C: 'Use a blood pressure cuff that fits snugly around the arm.' Using a properly fitting cuff is essential for accurate blood pressure measurements. Choice A is incorrect because the timing of medication administration should be individualized and not specified in the question. Choice B is incorrect as checking blood pressure once a week may not provide sufficient monitoring for a client with hypertension. Choice D is incorrect because stopping medication abruptly once blood pressure is normal can lead to rebound hypertension and complications.

Correct Answer: C

Rationale: To prevent aspiration in clients receiving continuous enteral feedings, the nurse should elevate the head of the bed to 45 degrees. This position helps reduce the risk of regurgitation and aspiration. Flushing the tube with water every 4 hours (Choice A) is important for maintaining tube patency but does not directly prevent aspiration. Positioning the client on the left side during feedings (Choice B) is not specifically related to preventing aspiration in this context. Checking gastric residual every 2 hours (Choice D) is important to assess feeding tolerance but does not directly prevent aspiration.

Correct Answer: C

Rationale: An INR of 3.0 is elevated, indicating impaired blood clotting function, which poses a significant risk of bleeding in clients with cirrhosis. This finding should be promptly reported to the provider for further evaluation and management. Choice A (Albumin 3.5 g/dL) is within the normal range and indicates adequate liver synthetic function, so it does not require immediate reporting. Choice B (Bilirubin 1.0 mg/dL) is also within the normal range and typically seen in clients without significant liver dysfunction, so it does not need urgent attention. Choice D (Ammonia 80 mcg/dL) is elevated, but it is not the priority finding in cirrhosis; elevated ammonia levels are associated with hepatic encephalopathy rather than increased bleeding risk.