Has anyone ever had a patient with a peg tube feeding that had no residual during one shift and the next shift they had a lot of residual? I had a patient with peg. I checked residual in the morning, lunch time, supper time, always before administering feed and medications. There were about 20 ml of residual in the beginning of shift and none after that for the remainder of the shift. During the night she was having high residuals, so feeding was held. Next shift patient had large amounts of residual. I'm talking 2000 and higher. How can that happen?