Not painful: A thin catheter will be inserted into the anus, and pressure readings will be taken. The catheter takes pressure readings at different levels in the anal canal and low rectum to evaluate what the muscles are capable of doing. You may have a small balloon placed into the rectum and be asked to push it out as well. Don't be frightened. They are trying to figure out what the problem is.
Answered 1/29/2015
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