2025年3月20日 · The modified Fisher scale is a method for radiological grading subarachnoid hemorrhage (SAH) secondary to intracranial aneurysm rupture, assessed on the first non-contrast CT. It was modified from the original Fisher scale in 2006 1 to account for patients with thick cisternal blood and concomitant intraventricular hemorrhage .

2023年6月1日 · A subarachnoid hemorrhage (SAH) is defined as the accumulation of blood in the space between the arachnoid membrane and the pia mater around the brain referred to as the subarachnoid space. The etiology of SAH can be either nontraumatic (about 85% are secondary to aneurysm rupture) or traumatic in nature.[2]

2024年7月7日 · Subarachnoid Haemorrhage (SAH) potentially fatal bleeding into the subarachnoid space, usually due to a ruptured cerebral aneurysm

2024年1月23日 · The WFNS subarachnoid hemorrhage grading system, proposed in 1988 by the World Federation of Neurosurgical Societies uses the Glasgow Coma Scale and the presence of focal neurological deficits to grade the clinical severity of subarachnoid hemorrhage 1.. In 2016 a modified grading system was proposed to address inter-rater variability in determining what signs and symptoms constitute a focal ...

2024年7月7日 · predicts risk of delayed cerebral ischemia, combines additive risk from SAH and IVH. Ogilvy and Carter (1998) combines clinical and radiological findings; combination of age, Hunt-Hess grade, Fisher grade, and aneurysm size and age; studies of this are flawed; minimal inter-observer variability; References and Links

Thin SAH is classified as < 1mm in depth. Thick SAH is classified as ≥ 1mm in depth. Clinician must be able to identify subarachnoid hemorrhage (SAH) and major neuroanatomical landmarks on head CT.

The cause of SAH is a ruptured aneurysm in 85% of cases, non-aneurysmal perimesencephalic haemorrhage (with excellent prognosis) in 10%, and a variety of rare conditions in 5%. Catheter angiography for detecting aneurysms is gradually being replaced by CT angiography.

2024年7月7日 · Important complications of SAH include: Neurological deterioration; Seizures; Hyponatremia; Cardiac complications; Re-bleeding; Vasospasm; Oli Flower discusses complications of aneurysmal SAH in this PK SMACC talk:

This article examines the diagnosis of subarachnoid haemorrhage (SAH), a rare but serious cause of headache in general practice. On occasion, the diagnosis of SAH is missed or delayed, usually because the condition was not considered in the differential diagnosis.

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