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To classify postoperative outcomes for epilepsy surgery, Jerome Engel proposed the following scheme, the Engel Epilepsy Surgery Outcome Scale, which has become the ''de facto'' standard when reporting results in the medical literature: * Class I: Free of disabling seizures * Class II: Rare disabling seizures ("almost seizure-free") * Class III: Worthwhile improvement * Class IV: No worthwhile improvement ==History== Surgery for epilepsy patients has been used for over a century, but due to technological restrictions and insufficient knowledge of brain surgery, this treatment approach was relatively rare until the 1980s and 90s. Prior to the 1980s, no classification system existed due to the lack of operations performed up until the time. As surgery as a treatment grew more prevalent, a classification system became a necessity. The appropriate evaluation of patients following epilepsy surgery is extremely important, as medical professionals must know the appropriate course of action to follow in order to achieve seizure freedom for patients.〔 Accordingly, the Engel classification guidelines were devised by UCLA neurologist Jerome Engel Jr. in 1987 and made public at the 1992 Palm Desert Conference on Epilepsy Surgery. The Engel classification system has since become the standard in reporting postoperative outcomes of epilepsy surgery.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Engel classification」の詳細全文を読む スポンサード リンク
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