Which statement regarding atopic dermatitis (eczema) in the infant is most accurate?

Choice A reason: This statement is incorrect, as pedialyte is not the best thing for the child who is refusing to drink it, as it can cause dehydration and electrolyte imbalance. The nurse should not force the child to drink pedialyte, but rather offer alternatives that are more appealing and acceptable to the child.

Choice B reason: This statement is correct, as pedialyte is the best thing for the child who has diarrhea and vomiting, as it can prevent dehydration and electrolyte imbalance. The nurse should encourage the parent to give pedialyte to the child, but also respect the child's preferences and autonomy. The nurse should suggest different ways to make pedialyte more palatable and fun for the child, such as using a spoon, a medicine cup, a syringe, or a popsicle.

Choice C reason: This statement is incorrect, as clear diet soda is not a good option for the child who has diarrhea and vomiting, as it can worsen the dehydration and electrolyte imbalance. The nurse should advise the parent to avoid giving soda to the child, as it contains caffeine, sugar, and carbonation, which can irritate the stomach and intestines, and increase the fluid loss.

Choice D reason: This statement is incorrect, as it does matter what the child drinks, as some fluids can help or harm the child's hydration and electrolyte status. The nurse should educate the parent about the best and worst fluids for the child who has diarrhea and vomiting, and recommend pedialyte as the first choice. The nurse should also instruct the parent to give small and frequent amounts of fluids to the child, and to monitor the urine output, weight, and signs of dehydration.

Choice A reason: Slowing the heart rate does not increase diastolic filling time. Diastolic filling time is the time during which the ventricles are relaxed and filling with blood. Slowing the heart rate would decrease the cardiac output and worsen the heart failure.

Choice B reason: Increasing urine output does decrease pulmonary congestion, but it is not the primary effect of Captopril. Captopril is an angiotensin-converting enzyme (ACE) inhibitor, which blocks the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor. This reduces the blood pressure and the afterload on the heart. Diuretics are the drugs that increase urine output and reduce fluid overload.

Choice C reason: This is the correct choice. Decreasing the afterload means reducing the resistance that the heart has to overcome to pump blood to the body. This lowers the blood pressure and the workload on the heart, which improves the cardiac function and reduces the symptoms of heart failure.

Choice D reason: Increasing serum potassium does not improve cardiac performance. In fact, high levels of potassium can cause cardiac arrhythmias and cardiac arrest. Captopril can cause hyperkalemia (high potassium) as a side effect, which is why patients on this drug need to monitor their potassium levels and avoid potassium supplements or salt substitutes.