How long does it take for a ruptured appendix to kill you?

Varies: An abscess forms and will then spread infection through the abdomen. Once this happens, patients who aren't treated will get sicker, dehydrated and shut down their kidney and liver functions leading ultimately to death. Any treatment, even IV fluid may prolong this. The speed at which the multiple organ failure developed is determined by the strength of the patient prior to the appendicitis.

Depends: The overall chance of dying (mortality rate) has been reported at 30% from time periods before surgery was an option. So a ruptured appendix was not usually fatal, although clearly one would be very sick for months or years.. These data are clearly skewed, since one would have to die and then have an autopsy, so the actually mortality rate is lower. If a patient dies, it could take days to months.

Depends. : A free rupture into ones abdomen can cause sepsis and multi organ failure within hours to days. Most ruptures though are contained between loops of intestine or fat and can smolder for days before spreading .