Ruptured abdominal aortic aneurysm


Key learning points:

  • 80% rupture into the retroperitoneum and 20% rupture into the peritoneal cavity as well as into the retroperitoneum
  • the classical clinical triad (hypotension, pain and pulsatile mass) is only present in 25-50% of patients with a ruptured AAA
  • there are many indicators of increased AAA rupture risk including size >7cm; increasing size >1cm per year; discontinuity of calcification and hyperattenuating crescent sign
  • very high mortality of >90%