About 25 years ago when I was still in college I thought it would be cool to get a motorcycle. I rode it around for about a year with no problems until one day I was riding down this mountain road near where I lived and a deer ran out in front of my bike and I swerved to avoid it, I flew off my bike and into a ditch on the side of the road and was knocked out, my bike fell off the other side of the road and down a sheer cliff face. It was not obvious anyone has ever been there or that there was an accident. I laid there for almost a two days until people started looking for me after missing work. When I came to my legs were messed up, I had broken an ankle, elbow and wrist and couldn’t move. I sat there for hours convinced I was going to die. I was pretty upset about it but after a while the anxiety washed away and I just went completely numb. My next memory was waking up in a hospital.
Thank god I was wearing a helmet.
How about you?
Cardiac arrest is heart stop beating (e.g. damar Hamlin? The Bills dude the other year). This is when you see a flatline.
Heart attack or myocardial infarction means the arteries that keep your heart oxygenated get blocked, cardiac tissue after the blockage of that then starts dying. The heart is still beating (or trying to beat).