Escape though the private exit

You carefully escape through the private exit, and when the doctor notices your absence it's too late.
You hold your ass, it's permanently open and you are leaking your own fluids, but you arrive at the parking, and it's nighttime.

You don't notice any movement, just a bunch of cars and the iron fence.

-You can hide between the cars and check carefully for any guards or nurses patrolling the area.
-You can run to the fence and climb.
-Or you can stay in the tunnel, and try to check from there without exposing yourself.

Every option has its risks, you have to make a bet.