Correct Answer: B

Rationale: In the scenario presented, the patient has a low serum potassium level, which can predispose the patient to digoxin toxicity. It is essential for the nurse to hold the digoxin dose and promptly notify the healthcare provider of the abnormal lab values. Option A is incorrect because administering digoxin without addressing the low potassium level can potentiate toxicity. Option C is inappropriate as potassium should not be given as an IV bolus, especially in the case of hypokalemia. Option D is incorrect because oral potassium supplements may not be sufficient for rapidly correcting severe hypokalemia in an acute care setting.

Correct Answer: C

Rationale: When a patient is taking furosemide and a steroid medication, there is an increased risk of potassium loss due to the interaction between the two drugs. Consuming licorice should be avoided as it can worsen potassium loss. Reporting a urine output less than 600 mL/24 hours is not directly related to the drug interaction and may not be necessary. Taking furosemide at bedtime is not the primary concern when a patient is concurrently on a steroid medication and furosemide. Therefore, obtaining an order for a potassium supplement is the most appropriate recommendation to counteract the potential potassium loss.

Correct Answer: C

Rationale: Pulse oximetry is a noninvasive method of continuously monitoring the oxygen saturation of hemoglobin (SaO2). In the absence of underlying respiratory disease, the expected oxygen saturation level is at least 95%. Oxygen saturation levels below 95% may indicate hypoxemia, which can compromise tissue perfusion and oxygen delivery to vital organs. Therefore, maintaining oxygen saturation above 95% is crucial to ensure adequate oxygenation post-surgery. Choices A, B, and D are incorrect as they represent oxygen saturation levels that are below the expected value for a client without a history of respiratory disease, which should be at least 95%.

Correct Answer: B

Rationale: Choice B is incorrect because the client should not restrict fluids during the day due to increased urination at night. Clients with renal disease may be prescribed fluid restrictions, and they should be thoroughly assessed for potential dehydration. To decrease increased nocturnal voiding, clients should consume fluids earlier in the day. Choices A, C, and D are correct statements. Managing blood pressure is crucial to slow the progression of renal dysfunction. Limiting protein intake is important in renal disease management, and clients should be referred to a dietitian as needed. Taking antihypertensive medications as directed is essential for blood pressure control.

Correct Answer: A

Rationale: The correct answer is A: 'The tube is patent.' When the fluid in the water seal chamber rises and falls during inspiration and expiration, it indicates that the chest tube is patent, allowing for proper drainage. Choice B is incorrect because a kink in the tubing would obstruct the flow of fluid, leading to abnormal fluctuations in the water seal chamber. Choice C is incorrect as adding suction to the system is not indicated based on the described finding. Choice D is incorrect as the rising and falling of fluid in the water seal chamber is not indicative of the client retaining airway secretions.