What happens to transit time after ileocecal valve resection?

What happens to transit time after ileocecal valve resection?

• A. Increased transit time
• B. Decreased transit time
• C. No change
• D. Transit time becomes zero

Answer: (B)

The ileocecal valve regulates flow between the ileum and the colon and slows passage to allow more time for digestion and absorption. When it’s removed, that regulatory brake is gone, so chyme moves more quickly from the small intestine into the colon. As a result, overall intestinal transit time decreases. The other possibilities don’t fit because removing the valve does not speed up flow to the point of zero transit, nor does it have no effect; it actually reduces the time material spends in the small intestine by removing the time-slowing valve.

The ileocecal valve regulates flow between the ileum and the colon and slows passage to allow more time for digestion and absorption. When it’s removed, that regulatory brake is gone, so chyme moves more quickly from the small intestine into the colon. As a result, overall intestinal transit time decreases.

The other possibilities don’t fit because removing the valve does not speed up flow to the point of zero transit, nor does it have no effect; it actually reduces the time material spends in the small intestine by removing the time-slowing valve.