Subarachnoid hemorrhage is often caused by brain aneurysms, which are anomalies in the arteries of brain the most common being berry aneurysm.
Aneurysms swell up and weaken the wall of artery overtime.
Some of the other causes of subarachnoid hemorrhage include:
bleeding from arteriovenous malformations,
use of blood thinner medications.
A serious injury that can occur in car crash or during slip and fall occasions in old people can also be a cause of subarachnoid hemorrhage.
4 Making a Diagnosis
Often diagnosed during a physical examination subarachnoid hemorrhages cause stiff neck, and vision problems. This combination is critical for diagnosis of subarachnoid hemorrhage.
More tests are required to confirm the diagnosis and to note severity of condition.
Imaging tests include:
CT (computed tomography) scan- it includes layers of x ray to provide a detailed image of skull and helpful in locating the hemorrhage.
MRI (magnetic resonance imaging)- it uses electromagnetic waves to determine and predict the picture of brain and also helpful in checking the electrical activity of brain.
Cerebral angiography- it includes injection of a radioactive dye intravenously and x ray is used to check if there is any rupture in the blood vessels or not.
Transcranial ultrasound- this helps to detect the blood flow in brain.
Rapid treatment for subarachnoid hemorrhage is required to save patient’s life and reduce the damage to brain. Surgery is performed to close the aneurysm and stop future bleeding.
Craniotomy is performed and aneurysm is closed. Craniotomy includes opening of skull to expose the area of involvement. A technique called endovascular coiling can also be used to stop further bleeding.
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