The demographics – A brutal reality

Subarachnoid hemorrhage (SAH) refers to intracranial bleeding within the subarachnoid space, which lies between the arachnoid and pia mater overlying the brain. The rupture of an intracranial aneurysm is the cause of most cases of spontaneous (nontraumatic) SAH.

SAH*

is the MOST DEVASTATING

TYPE OF STROKE1

Overall incidence of SAH*

9/100 000 person-years2

Brain with a target

SAH*

patients

up to 26% will die before arriving at the hospital3

13% of the patients will die in the hospital3

Aneurysmal rupture

85%

of non traumatic SAH*1
are secondary

to aneurysmal rupture

MOST aSAH**1

  • Occurs between 40 and 60 years of age.
  • Slightly higher in women (60%).

SURVIVORS OF aSAH**4

  • 30% have significant morbidity & need help for daily activities.
  • 50% develop cognitive issues & never fully recovery

The prognosis remains severe : half of all patients do not survive.5

* SAH: Subarachnoid hemorrhage
** aSAH: Aneurysmal subarachnoid hemorrhage
*** DCI: Delayed cerebral ischemia

  1. Ziu E. et al., StatPearls, 2023
  2. Rooij N.K. et al., J Neurol Neurosurg Psychiatry, 78(12):1365-1372, May 2007
  3. Hoh B. et al., AHA/ASA Guideline, 54:314-370, 2023 
  4. Ciurea AV. et al., Journal of Medicine and Life, 6(2):120-125, April-June 2013
  5. Dodd et al. – 2021 – Pathophysiology of Delayed Cerebral Ischemia After Subarachnoid Hemorrhage A Review

Access Professional Resources

Explore Resources