Correct Answer: D

Rationale: A low serum potassium level increases the risk of digoxin toxicity. Digoxin toxicity is more likely to occur in individuals with low potassium levels because potassium is crucial for proper heart function. A heart rate of 60 beats per minute, blood pressure of 120/80 mm Hg, and respiratory rate of 18 breaths per minute are within normal ranges and do not directly indicate an increased risk of digoxin toxicity.

Correct Answer: C

Rationale: The correct action for the nurse to take first in this situation is to stop the feeding infusion. Coughing in a client with a nasogastric tube can indicate aspiration, which can be a serious complication. By stopping the feeding infusion immediately, the nurse can prevent further aspiration and related complications. Auscultating breath sounds or turning the client to the side may be necessary actions but addressing the feeding infusion is the priority. Notifying the healthcare provider can be done after the immediate issue of potential aspiration is managed.

Correct Answer: A

Rationale: The correct action for the nurse to implement in this situation is to advise the client to come to the clinic for an evaluation. Given the client's HIV-positive status and medication, it is crucial to assess the cough and fever promptly to identify the underlying cause. Increasing fluid intake (choice B) may be beneficial but does not address the need for evaluation. Taking an over-the-counter cough suppressant (choice C) may not be appropriate without knowing the cause of the symptoms. Advising the client to rest and call if the fever persists (choice D) delays the necessary evaluation and treatment.

Correct Answer: B

Rationale: The correct answer is B. Monthly breast self-exams are essential for early detection of breast cancer. While annual clinical breast exams and mammograms are important, monthly self-exams enhance early detection by helping women become familiar with their breasts and notice any changes. Choice A is incorrect as it does not address the importance of self-exams. Choice C is incorrect as it prematurely commends without ensuring the woman is conducting self-exams. Choice D is incorrect as it provides inaccurate information about the frequency of mammograms needed.

Correct Answer: B

Rationale: The correct answer is to ask the girl if she will be eating her breakfast this morning. This is important to determine if the child will be consuming food, which is crucial information before administering insulin. If the child does not plan to eat, administering the full dose of insulin may lead to hypoglycemia. Choice A is incorrect as administering the insulin without knowing if the child will eat can be dangerous. Choice C is not the first intervention because the immediate concern is the child's meal intake. Choice D, while important, is not the first step in this situation.