When they say “He/She has 3 days to live” how do they know?

Question

When they say “He/She has 3 days to live” how do they know?

In: Biology

Answer 1

It’s much more predictable when it is a disease like cancer, diabetes or Alzheimer’s wherein the body starts shutting down organs to try to survive. Cancer is remarkably predictable, and some hospice nurses can predict the time of death within an hour even 3 days ahead. There are signs like “the death rattle”, in which breathing becomes very labored when you only have a few hours left.