Hello everyone! I am a new student nurse on my first medsurg rotation. I have a patient who has a peg tube, cont. feeding at 70 ml/hr. I know I have to check residual Q4hrs and have read about it in my text book...but can someone pleeease tell me what it's suppose to look like? From my understanding residual is left over "feeding". If i put the syringe on the lopez valve and pull back, do I just keep pulling until....?(please fill in the blanks and describe what I should see...when do i know to stop?) Thank you so much.