Don’t bring a knife to a gunfight. Do bring a gun to knife fight. No matter what happens, you still have to deal with the one rule of a knife fight: you’re going to get cut. And here’s the thing: you stand a pretty good chance of after-the-fact exsanguination. Thanks to the psychological effects of adrenalin, you could suffer a lethal injury and be bleeding to death without feeling a thing. Until you don’t feel a thing ever again. We’re not talking about arterial spray. We’re talking about invisible internal bleeding which can take 20 minutes or longer to kill you dead. In fact, after any defensive gun use . . .
have someone else check you for injuries, from head to toe, looking for bruises, knife wounds and/or bullet holes. The best person to do that: a medical professional. In most situations, calling an ambulance is the fastest way to get access to competent medical attention. Of course, it’s not either or. Have someone else check you out for injuries AND call an ambulance.
Bonus! Medical attention gives you a chance to take a break from police attention/interrogation. [NB: Assert your right to silence and STFU.] Being passive in front of medical personnel also promotes the idea amongst law enforcement officers that you’re a victim of violence, rather than an instigator.
In short, you can win a fight and lose your life. Don’t be that guy.