I started seeing a new GI that I have never seen before. I'm having what he called a "pouchogram", tomorrow, which I think is just a flex sigmoid. The GI's office called last week to advise that I should drink 4L of colyte today. I questioned this? Seriously, I doubt I have to do the same prep as someone with a colon. But they said yes, so I'm doing as instructed it but seems wrong to me. I'm wondering if this will just make be dehydrated with explosive diahrea?