subarachnoid haemorrhage


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subarachnoid haemorrhage

A severe intracerebral haemorrhage in the subarachnoid space, often due to a ruptured intracranial aneurysm.
 
Clinical
Abrupt severe headache, loss of consciousness, vomiting.
 
Aetiology
Ruptured cerebral aneurysm, AV malformation, traumatic cerebral arterial dissection, extension of an intracerebral haemorrhage into the subarachnoid space, idiopathic.
 
Risk factors
Aneurysms, polycystic kidney disease, fibromuscular dysplasia, hypertension.
 
Management
Ventilation, oxygenation, fluid, tissue dehydration (e.g., mannitol, surgical evacuation), bed rest, sedation, analgesia, anti-seizure drugs.

sub·a·rach·noid hem·or·rhage

(sŭb'ă-rak'noyd hem'ŏr-ăj)
Bleeding between the middle membrane covering of the brain and the brain itself; 5-10% of strokes are caused by subarachnoid hemorrhage. Most common in people 20-60 years old; female predilection.
Synonym(s): subarachnoid bleed, subarachnoid haemorrhage.

subarachnoid haemorrhage

Bleeding over and into the substance of the brain from a ruptured artery lying under the arachnoid layer of the MENINGES. The commonest cause is rupture of a pre-existing berry-like swelling (ANEURYSM) on one of the arteries or bleeding from a tumour-like malformation on an artery. Subarachnoid haemorrhage is the main cause of spontaneous STROKE in young people. There is a sudden severe headache followed by loss of consciousness or other signs of neurological damage. The death rate is high. Treatment is directed to keeping the blood pressure reasonably low, preventing blood vessels from going into spasm and preventing blood clot in an aneurysm from dissolving. Surgery is sometimes appropriate.

sub·a·rach·noid hem·or·rhage

(sŭb'ă-rak'noyd hem'ŏr-ăj)
Extravasation of blood into subarachnoid space.
Synonym(s): subarachnoid haemmorhage.
References in periodicals archive ?
Long-term functional effects of anuerysmal subarachnoid haemorrhage with special emphasis on the patient's view.
Conclusion: The rate of neurological complications was higher in patients with subarachnoid haemorrhage.
During his trial at Newcastle Crown Court, Home Office pathologist Dr Nigel Cooper told jurors Mr Howard died as a result of a traumatic subarachnoid haemorrhage, which was 'most likely' caused by a punch to the left side of his face.
They occurred more frequently in patients with cerebral haemorrhage and subarachnoid haemorrhage (18% and 33%, respectively).
The product is intended for the treatment of subarachnoid haemorrhage (SAH).
Murray, "Simvastatin in aneurysmal subarachnoid haemorrhage (STASH): a multicentre randomised phase 3 trial," The Lancet Neurology, vol.
The Saltburn 35-yearold was given slim odds of survival when she suffered a burst brain aneurysm and subarachnoid haemorrhage two years ago today.
Doctors call it a subarachnoid haemorrhage, and it is usually caused by a weak point in a blood vessel bulging and then bursting.
Changes in case fatality of aneurysmal subarachnoid haemorrhage over time, according to age, sex, and region: a meta-analysis.
Experts from Durham University have worked in collaboration with the University of Liverpool and the University of Erlangen-Nurnberg, in Germany, to assess those that have had a subarachnoid haemorrhage (SAH).
High risk clinical characteristics for subarachnoid haemorrhage in patients with acute headache: Prospective cohort study.