Warning leaks before actual rupture often produce severe headaches, photophobia and stiff neck. Injection of blood into subarachnoid space increased ICP and distortion of intracranial structrues. Result is increased cerebral ischemia and possibly infarction due to significant reduction in cerebral blood flow. Vasoplasm - managed by maintaining a balance between the administration of hypertensive agents, volume expanders, maintenance of optimal cerebral perfusion and blood pressure. Another serious consequence of initial rupture is rebleeding.
Strategy clip the aneurysm before hemorrhage recurs.
Patients also at risk for hydrocephalus from clogging and obstruction of CSF flow through ventricular system. Patients with subarachnoid hemorrhage as a consequence of cerebral aneurysm - monitor patient for signs of cerebral vasoplasm and hydrocephalus. Keep blood volume and pressure at normal to high levels. Arteriovenous malformation abnormal communication between an artery and a vein resulting in a tangle of vessels within the vasculature of the brain. Second most common cause of subarachnoid hemorrhage.