Final answer:
After surgery for pyloric stenosis, the infant will typically remain NPO for 24 to 48 hours. After stabilization, clear liquids may be introduced within 6 hours and formula feeding within 4 hours.
Step-by-step explanation:
After surgery for pyloric stenosis, the infant will typically remain NPO (nothing by mouth) for 24 to 48 hours. This is to allow the gastrointestinal tract to heal and recover from the procedure. Nasogastric suction may also be used to alleviate any potential complications caused by fluid build-up in the stomach. Once the infant's condition has stabilized, clear liquids may be introduced within 6 hours, followed by formula feeding within 4 hours.