Subarachnoid hemorrhage Questions and Answers Latest Update Graded A+
Causes - Answers 1. most are caused by ruptured saccular aneurysms
2. trauma
3. AVMs/fistulas
4. vasculitides
5. intracranial arterial dissections
6. amyloid angiopathy
7. bleeding diatheses
8. illicit drug use
epidemiology - Answers 1. most aneurysmal SAH occur between 40-60 of age
2. young children and the elderly can be affected as well
3. risk in african americans>caucasian americans
4. women have a slightly higher incidence of aneurysmal SAH, ?d/t hormonal status
risk factors - Answers 1. cigarette smoking
2. HTN
3. genetic risk
4. sympathomimetic (phenylpropanolamine): in appetite suppressants, cold remedies
risk factors - Answers 5. cocaine abuse
6. estrogen deficiency
7. antithrombotic therapy
8. statins and low cholesterol
9. stressful life events NOT convincing risk factors
clinical manifestations - Answers 1. rupture of an aneurysm releases blood directly into the CSF under
arterial pressure
2. the blood spreads quickly w/i the CSF, rapidly increasing ICP
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