What percentage of patients with AAA rupture die before reaching the hospital?

In the case of an abdominal aortic aneurysm (AAA) rupture, a significant concern is the high mortality rate associated with the event. Research indicates that approximately 30-50% of patients experiencing a rupture will die before reaching the hospital. This figure reflects the critical nature of such ruptures, where rapid blood loss can lead to shock and death within a short time frame.

Factors contributing to this high mortality rate include the sudden onset of symptoms, often leading to delayed recognition and treatment. The vast majority of patients with a ruptured AAA experience severe pain and can quickly deteriorate, necessitating immediate medical intervention. Unfortunately, by the time they seek help, if the bleeding is extensive, it can often result in fatality before proper medical aid can be rendered. Thus, the 30-50% range accurately captures the serious life-threatening risks posed by a ruptured AAA.