How can be people still die days and even weeks after being injured?

Question

Often you hear about someone who is injured badly, but received treatment right away by the hospital – How is it possible for him to survive the first few days, and only die later on?

I imagine that he can’t bleed out, since the hospital pumps into him all the blood that he is missing, and if a vital organ he had has gotten damaged, it would cause a death in less than a day

In: 1

Answer 1

What everyone else said, plus infections can occur days or even after the injury, depending on how long the wound takes to heal over.