Spetzler-Martin grade for brain AVM
Surgical risk grade for arteriovenous malformations.
Inputs
0 of 1Nidus size
Eloquent adjacent brain
Deep venous drainage
When to use
- Brain AVM treatment planning.
Pearls and pitfalls
- Grades I–II: low surgical risk; IV–V: usually observation or multimodal therapy.
Why use
The standard AVM grade.
| Criterion | Points |
|---|---|
| Nidus size: Small (under 3 cm) | +1 |
| Medium (3–6 cm) | +2 |
| Large (over 6 cm) | +3 |
| Eloquent adjacent brain | +1 |
| Deep venous drainage | +1 |