More and more patients survive aneurysmal subarachnoid haemorrhage (aSAH), with case fatality decreasing by 17% in absolute terms over the past three decades and incidence remaining relatively stable at nine per 100?000 patient-years. The mean age at which aSAH occurs is reasonably young at 55 years, and people of this age in the general population have a good life expectancy. However, there are few data for life expectancy after aSAH, and the risks of late recurrent aSAH and other vascular diseases are unclear.
http://www.thelancet.com/journals/laneur/article/PIIS1474-4422(11)70017-5/abstract?rss=yes
