A mother brings her 4-month-old son to the clinic with a quarter taped over his umbilicus, and tells the nurse the quarter is supposed to fix her child's hernia. Which explanation should the nurse provide?

Choice A reason: Increasing oral fluids may help with hydration, but it will not reduce skin flushing caused by lisinopril. Lisinopril is an angiotensin-converting enzyme (ACE) inhibitor that dilates blood vessels and lowers blood pressure. Flushing occurs due to increased blood flow to the skin.

Choice B reason: Nitroglycerin is a vasodilator that relaxes smooth muscle in blood vessels and reduces chest pain caused by angina. It is not indicated for skin flushing caused by lisinopril. Moreover, nitroglycerin can lower blood pressure further and cause hypotension, headache, dizziness, and fainting.

Choice C reason: Going to an emergency department is not necessary for skin flushing caused by lisinopril. Flushing is not a sign of an allergic reaction or anaphylaxis, which would require immediate medical attention. Flushing is also not a symptom of a heart attack or stroke, which would present with other signs such as chest pain, shortness of breath, arm numbness, or slurred speech.

Choice D reason: Reassuring the client that facial flushing is a common side effect of lisinopril is the best action for the nurse to take. Flushing is not harmful or dangerous, and it usually subsides within a few hours. The nurse should explain the mechanism of action of lisinopril and its benefits for lowering blood pressure and preventing angina. The nurse should also advise the client to monitor his blood pressure regularly and report any signs of hypotension, such as dizziness, lightheadedness, or fainting.

Choice A reason: Yellow-tinged sputum is not a critical finding for the nurse to report, as this is a common sign of pneumonia and does not indicate an adverse reaction to meropenem. This is a distractor choice.

Choice B reason: Nausea and headache are not urgent findings for the nurse to report, as these are mild side effects of meropenem and can be managed with supportive measures. This is another distractor choice.

Choice C reason: Watery diarrhea is an important finding for the nurse to report, as this can indicate a serious complication of meropenem, such as Clostridioides difficile infection, which can cause severe dehydration, electrolyte imbalance, and sepsis. Therefore, this is the correct choice.

Choice D reason: Increased fatigue is not a significant finding for the nurse to report, as this can be related to the client's underlying condition and does not suggest a problem with meropenem. This is another distractor choice.