Engel used a classification scheme to describe the outcome following brain surgery performed to control seizures.
Main classes for post-operative status:
(1) seizure free, excluding first few weeks after surgery (Class I)
(2) rare seizures (Class II)
(3) worthwhile improvement from surgery (Class III)
(4) no worthwhile improvement from surgery (Class IV)
|
Seizure Free (Class I) |
Features |
|
IA |
completely free |
|
IB |
aura only since surgery |
|
IC |
some seizures after surgery but none now for >= 2 years |
|
ID |
atypical generalized convulsion only if try to stop antiepileptic drug |
|
Rare Seizure (Class II) |
Features |
|
IIA |
initially seizure free, now rare seizures |
|
IIB |
rare seizures since surgery |
|
IIC |
some seizures after surgery, but rare now for >= 2 years |
|
IID |
nocturnal seizures only, not associated with disability |
|
Worthwhile Improvement (Class III) |
Features |
|
IIIA |
worthwhile reduction not otherwise specified |
|
IIIB |
prolonged seizure free interval, >= 2 years and > 50% of followup interval |
|
No Worthwhile Improvement (Class IV) |
Features |
|
IVA |
significant seizure reduction |
|
IVB |
no appreciable change |
|
IVC |
seizures worse |
Purpose: To determine the outcome of brain surgery to control seizures using the classification proposed by Engel.
Specialty: Neurology
Objective: response to therapy, surgery
ICD-10: G40,
