Question

How can a person still be alive if there is no pulse, blood pressure or signs of brain activity?

Answer 1

Answer:

With just a ventilator, some biological processes — including kidney and gastric functions — can continue for about a week, Greene-Chandos said. ... Normal blood pressure, which is also critical for bodily functions, often cannot be maintained without blood-pressure medications in a brain-dead person, Greene-Chandos said.