Big issue i have with this is that there is nothing to compare it too in the room, it is just a image of a light flare, no bed, nothing in this room to compare the image too. I doubt this nurse was just sitting in the dark by her self while this person passed.
Realistically it could be anything..........
I worked in a Hospital for awhile and i can vouch for the fact there is always something lit up in the rooms, whether it be the PC or instruments in the room. That being said there is a distinct possibility it could be the light off a instrument and a non focused camera, or overall bad camera.