Q. All are true regarding AVM grading system (proposed by Spetzler and
Martin)
a. higher grades lesions indicate that lesions are more surgically difficult
b. evaluates the size of the nidus, the location of the nidus, and the arterial feeders
c.“eloquent” areas AVMs is is given score of 1
d. large or diffuse AVMs encompassing the entirety of critical structures are classified as grade VI
e. large AVMs with eloquent cortex involvement , deep drainage belongs to grade V
ANS ---b
Spetzler and Martin grading of AVMs involves evaluation of three features: the size of the nidus, the location of the nidus, and the venous drainage pattern.
a. higher grades lesions indicate that lesions are more surgically difficult
b. evaluates the size of the nidus, the location of the nidus, and the arterial feeders
c.“eloquent” areas AVMs is is given score of 1
d. large or diffuse AVMs encompassing the entirety of critical structures are classified as grade VI
e. large AVMs with eloquent cortex involvement , deep drainage belongs to grade V
ANS ---b
Spetzler and Martin grading of AVMs involves evaluation of three features: the size of the nidus, the location of the nidus, and the venous drainage pattern.
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