Table 4.
Surgical technique (29 studies)
| Closure of perforation | 66% omental patch | 24% mixed techniques | 10% sutures only | |
| Pneumoperitoneum | 26% Hassan trocar | 47% Veress needle | 26% mixed | |
| Pneumoperitoneum | 75% 12 mmHg | 25% 11 or 14 mmHg | ||
| Camera position | 35% supraumbilical | 35% umbilical | 30% infraumbilical | |
| Number of trocars used | 60% four trocars | 40% three trocars | ||
| Surgeon position | 44% between legs | 33% left side patient | 16% between or left side | 6% right side |
| Irrigation fluid | 45% generous | 55% between 2 and 6 L | ||
| Camera | 80% 30° | 10% 40° | 10% 0° | |
| Nasogastric tubing | 94% yes | 6% no | ||
| Abdominal drains | 79% yes | 21% no | ||
| Suture material | 64% resorbable | 38% nonresorbable | ||
| Knotting technique | 64% intracorporeal | 14% extracorporeal | 14% mix | |