Correct Answer: A

Rationale: Hypokalemia is managed by administering potassium supplements to correct the low potassium levels in the body. Monitoring the ECG is essential because low potassium levels can lead to cardiac arrhythmias. Choice B is incorrect as restricting fluid intake and providing a high-sodium diet are not appropriate for managing hypokalemia. Choice C is incorrect because hypokalemia involves low potassium levels, not sodium levels, and insulin therapy does not directly address this issue. Choice D is incorrect as calcium supplements are not indicated for hypokalemia, and monitoring for hyperkalemia is not relevant in this case.

Correct Answer: A

Rationale: The correct answer is A: Hypokalemia. Hypokalemia is an adverse effect of digoxin. Digoxin can cause hypokalemia, which increases the risk of toxicity. Monitoring potassium levels is crucial when a client is taking digoxin. Choices B, C, and D are incorrect as hypernatremia, hypertension, and tachycardia are not directly associated with digoxin use.

Correct Answer: D

Rationale: In the management of sepsis, prompt intervention is crucial. Administering IV antibiotics is essential to target the underlying infection. Monitoring blood pressure helps assess the patient's hemodynamic status. Administering fluids is vital to maintain adequate perfusion. Therefore, all the options are integral components of the initial management of sepsis, making 'All of the above' the correct answer. Choosing any single intervention over the others may delay optimal care and compromise patient outcomes.

Correct Answer: C

Rationale: The correct answer is to hold your breath for 5-10 seconds after inhaling when using a metered-dose inhaler (MDI) for asthma management. This action ensures proper medication absorption in the lungs. Inhaling rapidly (choice A) may cause the medication to impact the mouth/throat rather than the lungs. Exhaling completely before inhalation (choice B) does not optimize medication delivery. Inhaling slowly (choice D) may not allow the medication to reach the lungs effectively.

Correct Answer: D

Rationale: The correct answer is to investigate for signs of infection when caring for a client diagnosed with delirium. Infections can frequently cause or worsen delirium. While investigating medication history, sensory deficits, and cognitive functioning may be important in the overall care of the client, when prioritizing, the nurse should first rule out or address potential infections due to their significant impact on delirium.