The highest risk of seizures is within the first 24 hours of ictus, occurring at presentation in 3-18% of individuals. Long-term seizures occur in 6-15% of survivors - a 20 times greater risk than the general population. Most present within the first 18 months, but 6% develop seizures at more than 2 years following their SAH. Early seizures do not necessarily predict long-term seizures. More recent studies have shown a general decline in the incidence of seizures compared with older series. This may reflect technical advances in neurosurgery and neuroanesthesia aimed at minimizing brain manipulation and optimization of cerebral perfusion and neuronal protection during aneurysm surgery. Risk factors include intra-parenchymal hematoma, vasospasm and ischemia, MCA aneurysms, poor neurological grade, systemic hypertension, perioperative complications, re-bleed, pre-operative seizures, shunt-dependent hydrocephalus, thick cisternal blood and neurological deficit. Up to 30% of individuals with MCA aneurysms develop seizures, which is likely to be due to a higher incidence of parenchymal involvement. Thirty-three percent of patients with a poor grade compared with 2.5% good-grade individuals will suffer seizures, whilst 16% of individuals who suffer infarction following SAH will develop epilepsy.

Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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