[[From
here]]
After escaping to what was hopefully the relative safety of an unoccupied room, Wesker spent only a moment looking around to make sure there were no immediate threats. After quickly scanning the room he moved over to crouch behind a table.
Even with his accelerated healing, he needed to stop the bleeding quickly. The coat was easy enough to remove, but the material of the shirt would make a much better bandage. Once he managed to pull it off, Wesker gripped the shirt with his teeth, using one of the knives to cut the shirt down the front.
Actually wrapping it around the bleeding stump where his left hand had once been was by far the most difficult part. Unable to make any sort of tie with just the one hand he settled for wrapping it repeatedly around the bleeding wound and holding it in place with his remaining hand.