[Drew68]

Are her heart and lungs functioning without machines?

Jahi is on a ventilator (aka life support machine) that is mechanically pumping oxygen into her lungs. Unplug that machine and respiration will cease immediately followed by circulation within minutes.

[MHGinTN]

If 0₂ is withheld from you, you too would cease to function in a few minutes. We could pump some Pavulon into you, then hook you up to a ventilator for a while, then stop the machine, and you would eventually expire. That is not what this is about.

I would just like to know if her heart will beat, unassisted, so long as oxygen is pumped into her lungs. If so, she is circulating her own blood thus her brain --right down to the stem-- is not yet 'dead'. She is not yet a cadaver if her heart will beat on its own so long as 0₂ level is maintained by machinery if needed.

[fortheDeclaration]

Alright, then she is dead.

That is what I was asking about.