Which description characterizes initial ileostomy output in the first 12–24 hours post-op?

• A. Immediately watery and foul-smelling
• B. Colorless and thin with strong odor
• C. Bright red and sticky
• D. Usually 12-24 hrs postop: very dark green, viscous, odorless

Answer: (D)

In the immediate postoperative period, the ileostomy is draining concentrated, ileal effluent rather than a fully formed stool. The main idea being tested is what early ileostomy output typically looks like in the first day or so. During the 12–24 hour window, the output is usually very dark green and viscous because bile pigments and mucus dominate and the liquid is still relatively concentrated. It tends to have little odor at first since bacterial fermentation is not yet pronounced right after surgery. This combination—very dark green, thick, and relatively odorless—best fits the early post-op pattern. The other descriptions describe characteristics that aren’t typical of initial ileostomy drainage (watery and foul-smelling, colorless and thin with strong odor, or bright red and sticky), so they don’t match the expected early appearance.