Summary of failed animal experiments
| Operation time | Cause of death | Necropsy | |
| 0414 | 10 hrs | immature intracorporeal sutures improper double-J stenting | Nil |
| 0428 | ? | Severe preperitoneal emphysema Overinflation of CO2 (20 mmHg) Expired, few(?) days after operation | Nil |
| 0505 | 10.5 hrs | Difficult to find ileocecal junction poor handling of instrument Expired, few(?) days after operation | Nil |
| 0514 | 10.5 hrs | Intestine injury Difficult to find ileocecal junction Sudden death, 20 days later | Severe bowel adhesion; hydronephrosis; no obvious urine leakage |
| 0616 | 9 hrs | Successful operation but sudden death on the next day after operation (?) | Nil |
| 0623 | 10 hrs | Intestine injury Expired, 3 days after operaton | Poor nipple making |
| 0901 | 7.5 hrs | Hypovolemic shock Expired immediately after finishing of operation | Superficial liver tearing by suture needle with oozing (without repair) |