Well first of all they don't need to do that. And The second thing is CPR has to be started within the first 5 minutes or an AED(diffibulator). But the CPR has to be done correctly. Thats just the first thing that has to occur immediately. The next thing is to get them to the hospital so they can start IV fluids to flush out the alcohol and liquid charcoal
to reverse the effects of the cocaine OD. Its very very dangerous and the best thing to do is just not do it. Drinking is one thing but Cocaine is another its very bad. The chance for a person to die taking cocaine and alcohol is very surreal and medical attention is going to be needed immediately!!!!