Agreed, it's a tautology I'll admit but if they can bring you back, you're not dead. Just like we used to be able to say no heard beat meant you were dead, and now we don't.
If I detect breathing or a heart beat, I am required to tap you a couple times and ask if it's ok for me to assist you. If you can't respond, consent is still implied. If you respond with anything suggesting "no", then I am to leave you alone and notify emergency personnel that you declined help.
If I am permitted to help, (you give consent or can not respond), then I must only do things that are within my training. If I step outside the line, such as administering a miracle pill (from Miracle Max), then I am liable for resulting damages. If I stay within my training, then I am protected legally.