====== Poor-grade aneurysmal subarachnoid hemorrhage epidemiology ======

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[[Poor-grade aneurysmal subarachnoid hemorrhage]] accounts for approximately 30% of all [[aneurysmal subarachnoid hemorrhage]], and it is a severe subtype of aSAH. These patients more often present with acute [[hydrocephalus]], severe [[intraventricular hemorrhage]], microcirculatory disturbances, and even multi-organ failure after [[ictus]] 
((Hutchinson PJ, Power DM, Tripathi P, Kirkpatrick PJ. Outcome from poor grade aneurysmal subarachnoid haemorrhage--which poor grade subarachnoid haemorrhage patients benefit from aneurysm clipping? Br J Neurosurg. 2000 Apr;14(2):105-9. doi: 10.1080/02688690050004516. PMID: 10889881.))
((Wartenberg KE, Sheth SJ, Michael Schmidt J, Frontera JA, Rincon F, Ostapkovich N, Fernandez L, Badjatia N, Sander Connolly E, Khandji A, Mayer SA. Acute ischemic injury on diffusion-weighted magnetic resonance imaging after poor grade subarachnoid hemorrhage. Neurocrit Care. 2011 Jun;14(3):407-15. doi: 10.1007/s12028-010-9488-1. PMID: 21174171.)).