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Subarachnoid Haemorrhage (Risk Factors (Alcohol misuse, Bleeding disorders…
Subarachnoid Haemorrhage
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Epidemiology
Incidence is 9 per 100,000 per year
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Signs
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Retinal, subhyaloid and vitreous bleeds
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Investigations
Lumbar puncture if CT negative - CSF becomes yellow after some hours due to bilirubin and this confirms diagnosis
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Treatment
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Maintain cerebral perfusion - hydrate, aim for systolic BP of 160
Complications
Cerebral ischaemia - due to vasospasm, can cause permanent CNS deficit
Hydrocephalus - due to blockage of arachnoid granulations, requires ventricular or lumbar drain
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