Escala de Spetzler-Ponce

AVM grading and treatment (2010)

Class A

Spetzler-Martin AVM grading system 1 or 2 Microsurgical resection is preferred treatment. 8% chance on postoperative deficit (95% CI = 6-10)

Class B

Spetzler-Martin AVM grading system 3 Multimodality treatment 18% chance on postoperative deficit (95% CI = 15-22)

Class C

Spetzler-Martin AVM grading system 4-5 No treatment, with exception of recurrent hemorrhages, progressive neurological deficits, steal-related symptoms, and AVM-related aneurysms. 32% chance on postoperative deficit (95% CI = 27-38) 1). 1) Spetzler and Ponce. A 3-tier classification of cerebral arteriovenous malformations. Journal of neurosurgery (2010) [Epub ahead of print]