CONTRAST OBSERVATION ON 24h AEEG AND ROUTINE EEG

Objective: To observe the value of 24h ambulatory electroencephalography (EEG) and routine EEG in diagnosis and differential diagnosis of epilepsy. Methods: Routine EEG were performed 1~2 times in 195 patients, then followed by 24h AEEG. The provocative test such as visual response and hyperventilating were also performed at the same time. The results were classified as normal, boundary, mild abnormal, moderate abnormal and marked abnormal EEG. Two doctors reported all results respectively; the epileptiform discharge was also noted. At last, the reports were analyzed. Results: Abnormal discharge was found in 37 (35.2%) of 105 epileptic patients' routine EEG, but 56(53.33%) patients were abmormal in 24h aEEG. In the 50 dubious epileptic patients, 20 (40%) patients' routine EEG and 33 (66%) patients' 24h AEEG showed abnormal discharge. In the other 40 syncopic patients, abnormal discharge was 10(25%) case in routine EEG and 15(37.5%) case in 24h AEEG .Conclusions: In founding the abnormal discharge, 24h AEEG was easier than routine EEG. The 24h AEEG was important valuable in diagnosis and differentiation diagnosis of epilepsy.