The nurse is providing postoperative teaching to a client on ways to prevent constipation. Which information should the nurse include?

Choice A reason: Drinking 800 to 1,000 mL of fluid daily is insufficient for preventing constipation. Adults typically require 2,000 to 3,000 mL of fluid daily to maintain hydration and promote bowel regularity. Limiting fluid intake to less than 1 liter may worsen constipation. Choice B reason: Ambulating early and frequently is the best intervention to prevent constipation postoperatively. Physical activity stimulates peristalsis, enhances bowel motility, and reduces the risk of ileus. Early mobilization is a cornerstone of postoperative care and directly addresses constipation prevention. Choice C reason: Adding fat-containing foods does not effectively prevent constipation. Dietary fiber, not fat, is essential for stool bulk and regularity. High-fat foods may actually slow gastric emptying and worsen constipation. Choice D reason: Taking oxycodone as scheduled is inappropriate because opioids are known to cause constipation by slowing gastrointestinal motility. Instead of preventing painful bowel movements, oxycodone would exacerbate constipation risk.