Fisher scale
Dr Avni K P Skandhan◉ and A.Prof Frank Gaillard◉◈ et al.
The Fisher scale is the initial and best known system of classifying the amount of subarachnoid haemorrhage on CT scans, and is useful in predicting the occurrence and severity of cerebral vasospasm, highest in grade 3 2.
Numerous other scales have been proposed, incorporating various parameters, and aimed at predicting mortality, morbidity and/or vasospasm.
Nonetheless, the Fisher scale and more recently the Modified Fisher scale are still widely used, the latter preferred by many over the original grading system, as the risk of symptomatic vasospasm in the original description was highest in grade 3 and lower in grade 4.
Scale
• grade 1
o no subarachnoid (SAH) or intraventricular haemorrhage (IVH) detected
o incidence of symptomatic vasospasm: 21% 3
• grade 2
o diffuse thin (<1 mm) SAH
o no clots
o incidence of symptomatic vasospasm: 25%
• grade 3
o localised clots and/or layers of blood >1 mm in thickness
o no IVH
o incidence of symptomatic vasospasm: 37%
• grade 4
o diffuse or no SAH
o ICH or IVH present
o incidence of symptomatic vasospasm: 31%


https://en.wikipedia.org › wiki › Lacunar_stroke

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Lacunar stroke or lacunar infarct (LACI) is the most common type of ischaemic stroke, and ... Much of the current knowledge of lacunar strokes comes from C. Miller Fisher's cadaver dissections of post-mortem stroke patients. He observed ...


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ROLE OF METABOLIC FACTORS IN LACUNAR INFARCT. ... Keywords: lacunar stroke, diabetes mellitus, ... Fisher és mtsai vizsgálatai szerint a szimptómás ...




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Note added at 5 days (2019-08-26 16:51:28 GMT)
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www.azidegsebesz.hu › pdf
27 Nov 2008 - lacunaris infarctusok, atrophia és vascularis dementiák szerteágazó, igen színes ... alapján a definitív infarctus kiterjedését, amely persze az időben változik ...... asszociált cerebellaris degenerációt, Miller–Fisher-szind- rómát ...