How long after surgery may bowel sounds take to return?

• A. Return in 6-12 hours
• B. May not return for 24-72 hours post-op
• C. Return in 12-24 hours
• D. Never return

Answer: (B)

The key idea is that after abdominal surgery, the bowel often slows down temporarily—a postoperative ileus. This slowdown is influenced by anesthesia, pain medications (especially opioids), and tissue handling during the operation. Because of this, bowel sounds may be absent or very faint for a day or two. It’s common for bowel sounds to reappear only after about 24 to 72 hours post-op. Some patients may recover sooner or later, but the 24–72 hour window reflects typical variability in the normal healing process. If bowel sounds do not return after several days, or if there are signs like increasing abdominal distension, persistent vomiting, or severe pain, that could indicate a complication and warrants evaluation.