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Brain Aneurysm

Statistics for Brain Aneurysm

While medicine has complied significant statistics on brain aneurysms, each individual experiences the condition differently.

Some Facts on Brain Aneurysm

  • Saccular (berry) aneurysms account for about 90% of all cases
  • About 90% of all brain aneurysms produce no symptoms
  • Ruptured secular aneurysms account for 80% of all non traumatic subarachnoid hemorrhages (SAH)
  • Hemorrhagic bleeding causes about 20% of all strokes
  • Aneurysms smaller than 3mm diameter are less likely to rupture
  • Aneurysms larger that 10mm have a greater risk of rupturing
  • Ruptures occur to about 27,000 people each year – about 10 in 100,000 individuals
  • Ruptures most often affect people between the ages of 30 and 60
  • 40% of people with ruptured aneurysms die within 24 hours
  • 25% of people with ruptures die within 6 months from complications
  • 1 in 4 survivors of a rupture experience some permanent disability

Locations for Brain Aneurysm