SAH-STATISTICS

SUMMARY

1. The peak age for aneurysmal SAH is 55-60 yrs

2. 30% of aneurysmal SAH occurs during sleep

3. 50% of aneurysmal SAH have warning symptoms 6-20 days before the event

4. Headache is lateralized in 30% of cases, usually to the side of the aneurysm

5. SAH is complicated by intracerebral haemorrhage in 20-40%, intraventricular haemorrhage in 13-28% and subdural blood in 2-5%

6. Patients > 70yrs have more severe SAH

Reference(s)

Greenberg, M., 1997. Handbook Of Neurosurgery. 7th ed. Lakeland, Fla.: Greenberg Graphics
Quiñones-HinojosaA. (2012). Schmidek and Sweet: Operative Neurosurgical Techniques: Indications, Methods and Results. 6th ed. Saunders.
Rhoton, A.L. and Congress Of Neurological Surgeons (2003). Rhoton cranial anatomy and surgical approaches. Philadelphia: Lippincott Williams & Wilkins.