How is SAH diagnosed?

How is a subarachnoid hemorrhage (SAH) diagnosed? Computerized tomography (CT scan) of the brain is a simple, effective way to see a subarachnoid hemorrhage. Another type of CT scan, CT angiography (CTA), visualizes blood vessels using contrast material injected intravenously (through a vein).

When do you suspect SAH?

The diagnosis of SAH should be considered in any patient with a severe and sudden onset or rapidly escalating headache.

What is the most common cause of spontaneous SAH?

Ruptured intracranial aneurysm is the most common cause of spontaneous SAH (around 85\% of cases) [2].

What is Fisher scale?

The Fisher scale is the initial and best known system of classifying the amount of subarachnoid hemorrhage on CT scans, and is useful in predicting the occurrence and severity of cerebral vasospasm, highest in grade 3 2.

What is a Grade 5 SAH?

Abstract. Background: Aneurysmal subarachnoid haemorrhage (SAH) WFNS grade V is commonly known to be associated with high mortality and a very poor prognosis for survivors. Therefore, maximal invasive therapy is frequently delayed until any spontaneous improvement with or without an external ventricular drainage occurs …

How can SAH be prevented?

How can I prevent SAH? The only way to prevent this condition is to identify potential problems within the brain. Early detection and, in some cases, treatment of a brain aneurysm can prevent a subsequent hemorrhage in the subarachnoid space.

Can CT rule out SAH?

Traditionally, a negative CT scan is followed with lumbar puncture (LP). However, noncontrast CT followed by CT angiography (CTA) of the brain can rule out SAH with greater than 99\% sensitivity.

When should oral nimodipine therapy be started?

Nimodipine comes as a capsule and an oral solution (liquid) to take by mouth or be given through a feeding tube. It is usually taken every 4 hours for 21 days in a row. Treatment with nimodipine should be started as soon as possible, no later than 96 hours after a subarachnoid hemorrhage occurs.

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