What is the typical initial ileostomy output in the first 12-24 hours post-op?

• A. Usually 12-24 hrs post-op, dark green, viscous, odorless (bile)
• B. Usually 24-48 hrs post-op, yellow and watery
• C. Immediately post-op there is no output
• D. Only after 72 hrs

Answer: (A)

Early after an ileostomy is created, the output you see comes from sterile small-bowel secretions and bile, not from stool that has spent time in the colon. In the first 12-24 hours, the stoma usually produces a dark green, viscous fluid with little odor. The green color comes from bile pigments, the thickness from mucus produced by the ileal mucosa, and the odor is minimal because colonic bacteria haven’t mixed with the effluent yet. As healing progresses over the next day or two, the output often shifts toward yellow and becomes more watery as digestion continues and the intestinal contents dilute and transit through the ileum. Immediate absence of output is not typical, and very delayed or absent output would warrant evaluation.