Originally posted by: Nova19
Cardiac arrest means the heart stops pumping and everything stops - there is no pulse, no breathing, no anything. Cardiac arrest was the definition of dead for centuries. Because that person would not be breathing, they could not drown. If her family spread the news of cardiac arrest, it wasn't technically a lie, clearly she did have cardiac arrest - her heart stopped beating.
I think you are really wondering about a heart attack, forgive me if I'm wrong. In a heart attack one or more small blood vessels taking blood to the heart muscle gets blocked or constricted and the heart may work less well or stop working altogether (cardiac arrest). If the heart worked less well but kept working, she might have lost consciousness but kept breathing, slid under the water and drowned. The autopsy should show the diseased arteries and damage to her heart muscle if it was the most common type of heart attack. The autopsy would definitely mention it.
We haven't seen the real autopsy report so I don't know what it says, all I have seen is loss of consciousness leading to drowning. There are many things that can cause you to lose consciousness. The fact they didn't say what exactly probably means they aren't sure yet what the causeed her to lose consciousness. I have never seen the amount of alcohol in her blood specified (heard both high and very low) but the toxicology results should show whether drugs or alcohol could have caused it but there are lots of other things that could have made her lose consciousness while bathing.
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