Note: an injury of the small bowel… not a small injury of the bowel.
A man was involved in a head-on collision between his car and an on-coming lorry at 6 pm. His abdomen struck the steering wheel. He had received outpatient treatment and went home. He came to hospital the next morning with severe abdominal pain. Examination revealed a septic, dehydrated man with signs of peritonitis. He was given lots of fluids and a laparotomy was performed.
These were what I found:

1. A hole in the intestine.

2. A hole in the “mesentery”, that layer of membrane and fat attached to the intestine.
Bad news: multiple bowel injuries. I wonder which injury will be more likely to give me sleepless nights post-op.
The hole in the intestine (number 1) was pouring intestinal contents into the peritoneal cavity. That’s bad. It’s very contaminated. That causes a life-threatening infection in the abdomen. The hole was repaired with stitches. Ok… looks good. There’s a risk of stitches breaking down and spilling the intestinal contents again but small bowel heals fairly well compared to large bowel.
Now, the hole in the mesentery (number 2) is a bigger problem… the mesentery carries the blood supply to the particular segment of intestine it’s attached to. If there’s a big tear like this one, the bowel’s blood supply is cut of. That’s bad too. Soon, that segment of bowel will die and an even bigger source of infection will open up. The dying segment was removed (segmental resection), the open ends were brought together, and joined with stitiches (primary anastomosis). This is going to be the bigger headache… because the risk of it leaking is higher than no. 1.
When will he pass wind? The longer he takes, the more anxious we’ll be getting.