[Karev may resort to doing just that but for now he's going to pick up his tools and go at it. Cut away what can't be saved, in terms of flesh and then evaluate how to save what he can. This is the part where he's very aware Aidan's got no idea what he's got left to work with so he's trying to be sympathetic here. While getting sutures ready to stitch.]
I've got good news and bad news. You ready to hear both?