Engel classification

To classify postoperative outcomes for epilepsy surgery, Jerome Engel proposed the following scheme,[1] the Engel Epilepsy Surgery Outcome Scale, which has become the de facto standard when reporting results in the medical literature:[2]

  • Class I: Free of disabling seizures
  • Class II: Rare disabling seizures ("almost seizure-free")
  • Class III: Worthwhile improvement
  • Class IV: No worthwhile improvement
  1. ^ Engel, Jerome (1993). Surgical Treatment of the Epilepsies. Lippincott Williams & Wilkins. ISBN 0-88167-988-7.
  2. ^ Tonini C, Beghi E, Berg AT, Bogliun G, Giordano L, Newton RW, Tetto A, Vitelli E, Vitezic D, Wiebe S (2004). "Predictors of epilepsy surgery outcome: a meta-analysis". Epilepsy Research. 62 (1): 75–87. doi:10.1016/j.eplepsyres.2004.08.006. PMID 15519134. S2CID 40141302.