Had a 22 y/o female pt in sickle cell crisis w/ lymphoma who gave me problems from the first minute I had her. She was allegedly smoking in the bathroom in the am. Insisted she go off the floor 'to walk around' . The MD came to the unit and was looking for her while she was off the floor. Senior nurse was so embarrassed that I (we) did not know where the pt was exactly. Senior nurse was almost screaming at me for letting the pt go off the floor, saying that everything that happens to that pt is my responsibility. I understand that the pt is my responsibility but if the woman wants to leave the floor with no intentions of leaving the hospital, is it my duty to forbid that person to do so? I asked the pt why she wanted to get off the unit and I had asked her to not leave the hospital and that I wanted her back in the unit at a certain time. I didnt tell her that she cant leave the floor for fear of getting accused of harassment. Senior nurse told me that I should have forbid to pt to leave the floor, if she still insisted to leave then I would call security. Would that be the prudent thing to do in this situation? Seems like its too harsh, treating my pt like a prisoner. What do you think?