Table 1

Engel’s classification of postoperative outcome*

ClassCharacteristic
Class IFree of disabling seizures
A: Completely seizure-free since surgery
B: None disabling; simple partial seizures only since surgery
C: Some disabling seizures after surgery, but free of disabling seizures for at least 2 years
D: Generalized convulsions with AED discontinuation only
Class IIRare disabling seizures (“almost seizure free”)
A: Initially free of disabling seizures but rare seizures now
B: Rare disabling seizures since surgery
C: More than rare disabling seizures since surgery, but rare seizures for the last 2 years
D: Nocturnal seizures only
Class IIIWorthwhile improvement
A: Worthwhile seizure reduction
B: Prolonged seizure-free intervals mounting to greater than half the followed up., But not<2 years
Class IVNo worthwhile improvement
A: Significant seizure-free reduction
B: No appreciable change
C: Seizures worse
ClassCharacteristic
Class IFree of disabling seizures
A: Completely seizure-free since surgery
B: None disabling; simple partial seizures only since surgery
C: Some disabling seizures after surgery, but free of disabling seizures for at least 2 years
D: Generalized convulsions with AED discontinuation only
Class IIRare disabling seizures (“almost seizure free”)
A: Initially free of disabling seizures but rare seizures now
B: Rare disabling seizures since surgery
C: More than rare disabling seizures since surgery, but rare seizures for the last 2 years
D: Nocturnal seizures only
Class IIIWorthwhile improvement
A: Worthwhile seizure reduction
B: Prolonged seizure-free intervals mounting to greater than half the followed up., But not<2 years
Class IVNo worthwhile improvement
A: Significant seizure-free reduction
B: No appreciable change
C: Seizures worse

*Used with permission (Ref. 20)

Table 1

Engel’s classification of postoperative outcome*

ClassCharacteristic
Class IFree of disabling seizures
A: Completely seizure-free since surgery
B: None disabling; simple partial seizures only since surgery
C: Some disabling seizures after surgery, but free of disabling seizures for at least 2 years
D: Generalized convulsions with AED discontinuation only
Class IIRare disabling seizures (“almost seizure free”)
A: Initially free of disabling seizures but rare seizures now
B: Rare disabling seizures since surgery
C: More than rare disabling seizures since surgery, but rare seizures for the last 2 years
D: Nocturnal seizures only
Class IIIWorthwhile improvement
A: Worthwhile seizure reduction
B: Prolonged seizure-free intervals mounting to greater than half the followed up., But not<2 years
Class IVNo worthwhile improvement
A: Significant seizure-free reduction
B: No appreciable change
C: Seizures worse
ClassCharacteristic
Class IFree of disabling seizures
A: Completely seizure-free since surgery
B: None disabling; simple partial seizures only since surgery
C: Some disabling seizures after surgery, but free of disabling seizures for at least 2 years
D: Generalized convulsions with AED discontinuation only
Class IIRare disabling seizures (“almost seizure free”)
A: Initially free of disabling seizures but rare seizures now
B: Rare disabling seizures since surgery
C: More than rare disabling seizures since surgery, but rare seizures for the last 2 years
D: Nocturnal seizures only
Class IIIWorthwhile improvement
A: Worthwhile seizure reduction
B: Prolonged seizure-free intervals mounting to greater than half the followed up., But not<2 years
Class IVNo worthwhile improvement
A: Significant seizure-free reduction
B: No appreciable change
C: Seizures worse

*Used with permission (Ref. 20)

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