NDE

I remember that they called for some sort of code. I remember wondering whether the code was for me. I also remember convulsing, and feeling a hand on my shaking leg and a voice saying, “It’s okay.” The next thing I remember was a near death experience, and then waking up to a dark room, puzzled.
According to Cindy, there was a crash cart. How did she know? Was bringing one standard when they called for a code? Did they use it?