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A pressure measurement was taken to study how your small intestine is working.

The large intestine (colon) is like an upside down U in the abdomen. The first part lies in the lower right corner of the abdomen. Then it continues upwards and runs across from right to left. Then it descends again. There then follows an S-shaped part located on the bottom left side of the abdomen, which then merges into the rectum. The rectum is the last section of the large intestine (colon). There are various muscles in the wall of the intestine. These muscles move the stool towards the anus.

To measure the pressure in the large intestine, a thin tube is pushed through the anus into the large intestine. A balloon at the end of the tube can be expanded. The balloon can be used to change the pressure situation in the intestine. This enables the movements of the intestine to be studied.