Planned ROT and UROT related to SAE and disease natural history: examples
| Implantation of deep brain electrodes (first surgery) following by implantation of a pulse generator (second surgery) for chronic stimulation in case of Parkinson's disease | Planned ROT |
| Decompressive craniectomy for uncontrolled intracranial hyperpressure following external ventricular drainage | UROT related to disease natural history |
| Internal shunt following external ventricular shunt | UROT related to disease natural history |
| Intervention for wound infection following a subdural haematoma evacuation | Infectious AE-UROT |
| Two surgical treatments for chronic subdural haematoma recurrence | Haemorrhagic AE-UROT |
| Internal shunt revision following early ventricular catheter disconnection in case of ventriculo-peritoneal shunt | Other AE-UROT |
| Microsurgical treatment of an intracranial aneurysm following the unsuccessful endovascular approach by detachable coils | Other AE-UROT |
AE-UROT, adverse event-associated UROT; ROT, return to operating theatre; SAE, Surgical adverse events; UROT, unplanned return to the operating theatre.