(SAH)
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(SAH)
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Definition: Blood escaping (extravasating) from an artery on the surface of the brain can fill the subarachnoid space and cause serious neurologic deficits due to mass effect, vasospasm, seizures, etc.
Release of atrial natriuretic factor can lead to hyponatremia.
Subarachnoid hemorrhages can be classified as those resulting from:
1. spontaneous rupture of a cerebral or spinal vascular malformation in continuity with the subarachnoid space
2. traumatic rupture of cerebral or spinal vascular malformation in continuity with the subarachnoid space
When cerebral aneurysms rupture blood fills the subarachnoid space that surrounds the brain. The blood around the brain can be very irritating to the brain surface (cortex) which can cause seizures. However, after a few days to weeks the blood breaks down and dissolves and the irritation of the brain surface resolves. Vasospasm is a common complication of subarachnoid bleeding that can cause a stroke. Areas of stroke can be prone to seizures. Unless there has been permanent injury to the brain surface (a stroke) the risk of future seizures long term following subarachnoid hemorrhage is low.
compare Intraventricular hemorrhage compare Intracerebral hemorrhage
Spontaneous subarachnoid hemorrhage
Spontaneous subarachnoid hemorrhage -- pathophysiology
Spontaneous subarachnoid hemorrhage - presentation
Spontaneous subarachnoid hemorrhage - workup
Clipping of cerebral aneurysm - procedure
Clipping of cerebral aneurysm - risks and complications
Stroke and Cerebrovascular Specialty Center
Traumatic subarachnoid hemorrhage
Traumatic subarachnoid hemorrhage -- pathophysiology
Traumatic intracranial hematoma
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