How much of small bowel is usually bypassed?

I know that varies according to surgeon and procedure but I have seen 100 cm mentioned frequently. I am having an open RNY on 12/31 (great way to start New Year). My surgeon said he bypasses 150 cm.

We greatly appreciate your interest in helping us build our Q&A database. To discourage vandals from posting garbage, however, we require people to register before posting.