Correct Answer: B

Rationale: The correct answer is Hypokalemia. Hypokalemia is the most concerning electrolyte imbalance for a patient receiving digoxin because it can increase the risk of digoxin toxicity. Low potassium levels can potentiate the effects of digoxin on the heart, leading to serious cardiac arrhythmias. Hyperkalemia (Choice A) is not typically associated with digoxin use. Hyponatremia (Choice C) and Hypercalcemia (Choice D) are not directly related to digoxin therapy and do not pose the same risk of toxicity.

Correct Answer: B

Rationale: The correct answer is to move the probe site every 3 hours. This action helps prevent skin breakdown and ensures accurate readings. Placing the infant under a radiant warmer (Choice A) is not necessary for pulse oximetry monitoring. Heating the skin before placing the probe (Choice C) can potentially cause burns in infants. Placing a sensor on the index finger (Choice D) is not the standard practice for continuous pulse oximetry in infants.

Correct Answer: D

Rationale: The correct answer is D. A client presenting with symptoms of a stroke, such as slurred speech, disorientation, and headache, requires immediate attention due to the possibility of a neurological emergency. Choices A, B, and C, although concerning, do not present with symptoms as urgent as those of a potential stroke. Dislocated shoulder, sickle cell disease with joint pain, and confusion with febrile illness can be addressed after ensuring the client with stroke-like symptoms receives prompt evaluation and intervention.

Correct Answer: B

Rationale: Administering lorazepam is the appropriate intervention for a client experiencing acute alcohol withdrawal. Lorazepam helps reduce agitation and prevent complications during this withdrawal phase. Choice A, providing a low-sodium diet, is not directly related to managing alcohol withdrawal symptoms. Choice C, keeping the client in a supine position, is not necessary and may not address the client's withdrawal symptoms. Choice D, placing the client in restraints, should only be considered if the client is at risk of harming themselves or others, but it is not the primary intervention for managing alcohol withdrawal.

Correct Answer: A

Rationale: Administering aspirin is the correct initial action when a patient experiences chest pain. Aspirin helps reduce the risk of clot formation and is a standard first-line treatment for chest pain related to possible cardiac issues. Administering nitroglycerin may be appropriate based on the underlying cause of chest pain, but aspirin is typically administered first. Repositioning the patient is not the primary intervention for chest pain, and preparing for surgery is not the immediate action required unless indicated by a healthcare provider after assessment.