What risk factors are associated with aneurysmal subarachnoid hemorrhage?
Risk factors associated with aneurysmal subarachnoid hemorrhage (aSAH) include low body mass index, smoking, high alcohol consumption, hypertension, and hyperlipidemia. Additionally, significant life events such as financial or legal problems with the past month may increase the risk of aSAH. Aneurysm size 7 mm has also been shown to be a risk factor for rupture. Inflammation appears to play an important role in the pathogenesis and growth of intracranial aneurysms, and 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (statin) and calcium channel blockers may retard aneurysm formation through the inhibition of NF-B and other pathways. However, the incidence of aSAH has not changed appreciably in 30 years. It is possible that diet increases the risk of stroke in general and aSAH in particular. 