Fisher Scale CT Blood Vasospasm Risk Calculator

Predict cerebral vasospasm risk from SAH CT using Fisher scale (1-4). Grade 3 (thick clot) has highest vasospasm and DCI risk.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
Advertisement

How It Works

Predict cerebral vasospasm risk from SAH CT using Fisher scale (1-4). Grade 3 (thick clot) has highest vasospasm and DCI risk

Each component has a specific meaning:

  • SAH CT — The sah ct recorded for the scenario being assessed.

Note: Interpret the fisher scale result against the thresholds and context described above.

How to Use

Enter the SAH CT for the scenario you are assessing. Predict cerebral vasospasm risk from SAH CT using Fisher scale (1-4). Grade 3 (thick clot) has highest vasospasm and DCI risk. Use the fisher scale result to inform your calculation.

Related Calculators

Hunt-Hess Grade

Medical Ultra-depth

PHASES Score

Medical Ultra-depth

Frequently Asked Questions