Correct Answer: C

Rationale: The correct answer is to monitor digoxin levels in a patient on digoxin. Digoxin is a medication commonly used to treat heart conditions, and monitoring its levels in the blood is crucial to ensure that the patient is within the therapeutic range and to prevent toxicity. Monitoring potassium levels (Choice A) is important due to the potential of digoxin-induced hypokalemia, but the primary focus should be on monitoring digoxin levels. Monitoring calcium levels (Choice B) and sodium levels (Choice D) are not directly related to digoxin therapy and are not the primary lab values of concern when administering digoxin.

Correct Answer: D

Rationale: The correct answer is D. Clients with diabetes should eat a snack if their blood glucose level is below 70 mg/dL, not 200 mg/dL. Option A is incorrect because checking blood glucose levels once a week may not provide adequate monitoring for someone with diabetes. Option B is incorrect as a strict limit of 50 grams of carbohydrates per day may not be suitable for everyone and can vary based on individual needs. Option C is incorrect as it is important for clients with diabetes to have a balanced diet that includes protein in moderation.

Correct Answer: C

Rationale: Auscultating crackles in the lung bases indicates fluid in the lungs, which can be a sign of aspiration pneumonia or pulmonary edema and requires immediate intervention to prevent respiratory distress. Aspirating 100 mL of gastric residual is within the acceptable range and does not require immediate intervention. A gastric pH of 4 is normal for gastric contents. Checking residual every 6 hours is a routine nursing intervention and does not indicate an urgent issue like pulmonary complications.

Correct Answer: A

Rationale: The correct answer is to administer epinephrine. Epinephrine is the first-line treatment for anaphylactic shock as it helps reverse the severe allergic reaction by constricting blood vessels, increasing heart rate, and opening airways for improved breathing. Oxygen (Choice B) can be administered after epinephrine to support oxygenation. Corticosteroids (Choice C) may be used to prevent a biphasic reaction but are not the initial intervention. Antihistamines (Choice D) can help with itching and hives but do not address the life-threatening symptoms of anaphylaxis.

Correct Answer: A

Rationale: The correct answer is to administer oxygen. Post-surgery, confusion in a patient could be due to hypoxia, a condition where the body is deprived of an adequate oxygen supply. Administering oxygen helps address hypoxia promptly, improving oxygen levels in the body and potentially resolving the confusion. Repositioning the patient, checking oxygen saturation, and performing a neurological exam may be important interventions but addressing hypoxia with oxygen administration takes precedence as the priority action.