I am an ICU nurse and 3 weeks after my accident, i attempted to return to my 12 hour night shift and i had a major set back which immediately put me back out for 2 more months. Im about 11 weeks out from my accident and definetly making great progress and gradually increasing my activity to prepare for returning to work august 1st. I am pretty sure i will have a return of some symptoms like i did the first time i tried to go back, however, i know i have to at least try and attempt it. 12 hours against your sleep wake cycle and having to try and actively critically think and save someone (or two) life is quite the stressful, overwhelming environment....if i have any luck, i will let you know. Best thing is to at least try and if you cant handle it, at least you know you attempted it. Of course, this is hoping you are at least a few months out of your injury...if its fairly recent, i would suggest holding off. good luck