Spetzler-Martin AVM Grade — free guideline decision tool
Grade a brain arteriovenous malformation (AVM) for surgical risk with the Spetzler-Martin scale (grade 1–5).
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Common questions
What does Spetzler-Martin AVM Grade do?
Estimate microsurgical morbidity/mortality risk and support treatment selection.
How is the result calculated?
Grade = size (1–3) + eloquence (0–1) + deep venous drainage (0–1). I–II low surgical risk, III intermediate, IV–V high risk.
Is this a substitute for clinical judgement?
No. All results are decision-support only, for licensed clinicians. They must be individualized to the whole patient and the latest guideline version.
Run Spetzler-Martin AVM Grade now
Grade a brain arteriovenous malformation (AVM) for surgical risk with the Spetzler-Martin scale (grade 1–5).
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.