| Type of surgery | Positive culture (n=80) |
|---|---|
| Intracranial Tumor Operation | 44 |
| Evacuation of Intracranial Haematoma | 6 |
| Repair of Cranial Defect | 6 |
| Ventriculoperitoneal Shunt | 4 |
| Repair of CSF Rhinorrhea | 1 |
| Suboccipital Decompression | 4 |
| Ventriculostomy | 3 |
| Decompression of Trigeminal Neuralgia | 3 |
| Ventricular External Drainage | 3 |
| Aneurysm Plus Ligation | 1 |
| Aneurysm Embolization | 3 |
| Arachnoid Cyst Excision | 1 |
| Posterior Fossa Decompression and Spinal Cavity Shunt | 1 |