During quad bypass surgery, my heart was stopped for 5 minutes - does that mean I was dead for 5 minutes?

No.... During bypass surgery, the bypass machine takes over the work of the heart so even though the heart is stopped, the bypass machine continues to circulate the oxygenated blood throughout your body and this is what keeps you alive during the surgery.
No. One is not dead until the brain is dead. In addition we say you're not dead until you are warm and dead. During heart surgery the heart is stopped and the patient is cooled, after being placed on the heart lung machine. While on the bypass machine blood is circulated through the body without the heart pumping.

Related Questions

What to do if I am due to have minimally invasive heart bypass surgery soon and wondered if anyone else has had it?

Nothing. You don't need to do anything other than keeping healthy and not smoke. It will help your progress overall. There are a few types of minimally invasive heart surgery procedures, but overall your progress tends to be a bit faster. Read more...
Guided imagery CD. It wouldn't hurt to listen to a pre-surgery guided imagery cd (ex, healthjourneys.Com). Many have found them useful. Read more...