Final answer:
The preop treatment for pyloric stenosis involves NPO and antibiotics, while the post-op treatment involves resuming feedings. The outcome is improved gastric emptying.
Step-by-step explanation:
The preoperative (preop) and postoperative (post-op) treatments for pyloric stenosis involve different interventions. For preop treatment, NPO (nothing by mouth) is usually recommended to minimize the risk of aspiration during surgery. Antibiotics may also be given to reduce the risk of infection. On the other hand, post-op treatment involves resuming feedings once the patient's condition allows. The outcome of the treatment is improved gastric emptying, leading to relief of symptoms associated with pyloric stenosis.