A nurse is admitting a 6-month-old infant who has dehydration. Which of the following amounts of urinary output should indicate to the nurse that the treatment has corrected the fluid imbalance?

Choice A reason: This statement is correct because patent ductus arteriosus is a condition where the ductus arteriosus, a fetal blood vessel that connects the pulmonary artery and the aorta, fails to close after birth. This allows blood to flow from the aorta to the pulmonary artery, increasing the blood flow to the lungs and causing pulmonary hypertension.

Choice B reason: This statement is incorrect because coarctation of the aorta is a condition where the aorta, the main artery that carries blood from the heart to the body, is narrowed. This causes increased pressure in the upper body and decreased pressure in the lower body, reducing the blood flow to the kidneys and other organs.

Choice C reason: This statement is incorrect because tricuspid atresia is a condition where the tricuspid valve, which separates the right atrium and the right ventricle, is missing or abnormally developed. This prevents blood from flowing from the right atrium to the right ventricle, decreasing the blood flow to the lungs and causing cyanosis.

Choice D reason: This statement is incorrect because tetralogy of Fallot is a condition that involves four defects: a large ventricular septal defect, pulmonary stenosis, overriding aorta, and right ventricular hypertrophy. These defects cause blood to bypass the lungs and mix with oxygen-poor blood in the aorta, decreasing the blood flow to the lungs and causing cyanosis.

Choice A reason: A child with Hirschsprung disease may require a temporary or permanent ostomy, depending on the extent of the bowel affected. The parent should be prepared for either outcome and not assume that the ostomy is only temporary.

Choice B reason: A child with Hirschsprung disease will not have normal bowel movements immediately after the surgery, as the bowel needs time to heal and adapt. The parent should be aware of the possible complications and follow-up care that the child will need.

Choice C reason: A child with Hirschsprung disease may need a feeding tube after the surgery to provide adequate nutrition and hydration while the bowel recovers. The parent should express interest in learning how to use and care for the feeding tube, as this indicates an understanding of the teaching.

Choice D reason: A child with Hirschsprung disease will not need a urinary catheter after the surgery, unless there is a specific indication for it. The parent should not confuse the feeding tube with the urinary catheter, as this indicates a lack of understanding of the teaching.