| Clinical signs | Effective | Percentage |
| Abdominal pain | 38 | 90.4 |
| Stopping materials and gases | 5 | 12.0 |
| Vomiting | 17 | 40.7 |
| Low blood pressure | 3 | 7.3 |
| Conjunctival pallor | 4 | 9.4 |
| Abdominal contracture | 26 | 61.9 |
| Disappearance of pre-hepatic dullness | 23 | 54.7 |
| Douglas bulge and pain | 21 | 51.2 |