Table 1.
General characteristics of epilepsy surgical patients in both centers (n = 148)
| Saskatoon, Canada n = 72 | Mexico City, México n = 76 | p | |
|---|---|---|---|
| Age (± SD) | 36.7 (± 13.2) | 37.4 (± 9.03) | 0.70 |
| Sex (%) | |||
| Male | 38 (53%) | 34 (49%) | 0.41 |
| Female | 34 (47%) | 42 (51%) | |
| Years of evolution of epilepsy mean (± SD) | 20.2 (± 13.6) | 27.38 ± 10 | 0.0004 |
| Epileptic syndromes (%) | |||
| Structural‐metabolic | 57 (80%) | 73 (96%) | 0.006 |
| Unknown | 14 (19%) | 3 (4%) | |
| Genetic | 1 (1%) | 0 (0%) | |
| VEEG localization | |||
| Right | 31 (43%) | 37 (49%) | 0.0007 |
| Left | 37 (51%) | 22 (29%) | |
| No clear localization | 0 | 11 (14%) | |
| Multifocal | 2 (3%) | 6 (8%) | |
| Generalized | 2 (3%) | 0 | |
| MRI findings | |||
| MTS | 35 (48%) | 59 (78%) | <0.001 |
| Cortical dysplasia | 3 (4%) | 6 (8%) | |
| Stroke | 2 (3%) | 4 (5%) | |
| Cyst | 0 | 2 (3%) | |
| Cerebral neoplasm | 4 (6%) | 0 (0%) | |
| AVM | 1 (1%) | 0 (0%) | |
| Normal | 20 (28%) | 0 (0%) | |
| Encephalomalacia | 7 (10%) | 1 (1%) | |
| Others | 0 | 2 (3%) | |
| Not done | 0 | 1 (1%) | |
| Seizures per month (group) | |||
| 1 to 3 | 37 (51%) | 14 (18%) | 0.0001 |
| 4 to 6 | 11 (15%) | 15 (20%) | |
| 7 or more | 24 (33%) | 47 (62%) | |
| Number of AEDs (group) | |||
| 0 | 0 | 2 (3%) | 0.06 |
| 1 | 8 (11%) | 3 (4%) | |
| 2 | 33 (46%) | 31 (41%) | |
| 3 | 25 (35%) | 28 (37%) | |
| 4 or more | 6 (8%) | 12 (15%) | |
| Type of epilepsy surgery | |||
| Standard temporal lobectomy | 54 (75%) | 46 (61%) | 0.0004 |
| Selective hippocampectomy | 3 (4%) | 19 (25%) | |
| Extratemporal resection | 6 (8%) | 0 (0%) | |
| Lesionectomy | 2 (3%) | 5 (6%) | |
| Callosotomy | 3 (4%) | 6 (8%) | |
| Frontotemporal resection | 3 (4%) | 0 | |
| VNS | 1 (1%) | 0 | |
| Engel classification at last follow‐up Engel | |||
| I | 50 (69%) | 54 (71%) | 0.06 |
| II | 12 (17%) | 6 (8%) | |
| III | 5 (7%) | 6 (8%) | |
| IV | 5 (7%) | 10 (13%) |
Data are presented % = percentage; AED, antiepileptic drugs; AVM, arteriovenous malformation; MRI, magnetic resonance imaging; MTS, mesial temporal sclerosis; SD, standard deviation; VEED, video electroencephalography; VNS, vagus nerve estimulation.