This event hit very close to home for me as my father died from complications from sudden cardiac arrest over a decade ago. He was exercising in a gym at a private club with no AED device available and one other person present when he had his "massive heart attack", which is how sudden cardiac arrest is often described. Paramedics did not arrive on the scene for 20+ minutes, at which point they were able to resuscitate him. He was in the ICU for almost 4 days and underwent many, if not all of the procedures, discussed in this thread. There was a period where we just had to wait for his heart and body to unwind from the trauma it had experienced before the various tests could be administered and the results reviewed by the medical team. We ultimately made the decision to remove him from life support as the doctors determined his brain had been deprived of oxygen for too long to function.
My father was a very religious/spiritual man who was described by the pastor of his church as the closest person to God he had ever met. I'm not particularly religious (spiritual, yes) and don't pray often but asked my dad tonight to help Damar get through this. I look forward to getting some positive news tomorrow.