A Nurse that was NOT you was in the room when it happened and you had already given report, correct? So you were at a computer completing your documenting. That occurrence in THAT room with THAT pt has NOTHING at all to do with you what so ever. Sounds like your new unit has some big issues. Don't sign a thing because you did not do a thing wrong. Good luck! And these two events happening to you so close together might be a sign...thing happen for a reason.