This is just an update for anyone in the future who finds this message because they're in the same situation....
We (buckeye girl is my sister) ended up having a j-tube inserted into my father's intestines. We feel it was a life-saving decision and we were happy we opted for the j-tube rather than the TPN. It was very easy to feed him, manipulate the tube, and operate the pump. However, it became clogged frequently....even after flushing with water, coca cola, cranberry juice, etc. I do think plunging with a syringe would have helped!
After surgery, I highly recommend you ask the nurse to instruct you precisely on how to use the tube and pump before you leave the hospital! I have read a few stories where people have been sent home without sufficient discharge instructions! At least, make sure you have a home health nurse visit you to check to make sure you are doing everything correctly.
My father's tube never became infected and didn't really bother him with the exception of the clogging!
Take care!