| Parameters | Patients | controls |
| Age |
|
|
| Mean age (year) ± SD | 38.1 ± 16.0 | 37.5 ± 15.3 |
| Pre operative (mmHg) MAP | 92.4 ± 11.4 | 90.4 ± 10.6 |
| Indications for surgery (n/%) | 73.6 ± 11.6 | 72.5 ± 10.1 |
| Inguinal hernias | 29 (72.5) | sNT |
| Inguino scrotal hernia | 11 (27.5) | sNT |
| Duration of surgery (in min) ± SD | 48 ± 2001 | sNT |
| Arterial hypotension (n/%) |
|
|
| Yes | 33 (82.5) | sNT |
| No | 7 (17.5) | sNT |