My father was discharged today with 2 nephrostomy drainage bags. My mother and I were not able to change the small size ones with the larger ones which could be used for night because they were never used at the hospital and we were not shown how they are to be attached. Question 1: how long will the smaller size bags, on average, be fine without draining? 3 hours, 4 hours? Do I need to worry if they are not changed in the middle of the night? Question 2: are the larger bags meant to be attached to a bed? Can they be used if they are simply resting on top of the bed? Question 3: what is the most comfortable way to hook them up at night? At the hospital, my father was wearing a gown and they were pinned to the gown, but at home, if he wears underwear or pajama bottoms, how should we secure the bags? Outside of the pants? NOTE: we tried the elastic bands around the leg, but they bother him. Question 4: I am worried that he will sleep on them and block the flow of the urine. Any suggestions? NOTE: we are trying to see if my father can continue to sleep with my mother on their queen size bed since he can get up (even if slowly), so he is sleeping on a regular bed. Thank you so much, Ida