G/J tube

I need HELP!!!! Came to work this weekend on my rehab unit. Haven't been there in a week. New pt. with a G/J tube. The J part is attached to straight drainage. No one knew what to do with this thing! No Dr orders, nothing on the TAR, nothing in her hospital records ( except for her tube feeding orders). Instructions on her arm were to " leave the clamp open at all times". The 11- 7 nurse said that she had 25cc output. She couldn't tell me anything, and the other nurse I was working with could tell me nothing. My supervisor knew nothing. The covering Dr knew nothing,We called the regular day nurse at home. All SHE knew was to keep the clamp open at all times! The resident rightfully was a little concerned that noone knew what to do with this. I had a few concerns, she had an output of 150cc, but I was expecting bile, it was a pale " cream of chicken soup" color ( sorry). I am thinking that she is loosing her feeding through this tube. I go back to work on Wed. and would like some knowledge about these things. I left a big note for my RCC and the Dr asking them to clarify WHAT has to be done with it.Come to find out, this lady has been on the unit for 5 days already!
Any one know anything about theses tubes? Wouls really appreciate some input!
Thanks!