The nurse is developing a plan of care for an infant after surgical intervention for imperforate anus. The nurse should include in the plan that which position is the most appropriate one for the infant in the postoperative period?

The most appropriate position for an infant after surgical intervention for imperforate anus is the prone position. Placing the infant in a prone position helps keep the hips elevated, reducing edema and pressure on the surgical site. This position promotes optimal healing and comfort for the infant. Option B, supine with no head elevation, does not provide the necessary elevation to reduce pressure on the surgical site. Option C, side-lying with the legs extended, does not offer the same benefits as the prone position in terms of reducing pressure on the surgical site. Option D, supine with the head elevated 45 degrees, does not specifically address the need for hip elevation to prevent pressure on the surgical site. Therefore, the correct choice is the prone position for this postoperative care scenario.