Hypotension by procedural groups
| Procedural group | No of cases of hypotension |
|---|---|
| General surgery | 101 |
| Orthopaedics | 74 |
| Vascular surgery | 43 |
| Urology | 34 |
| Cardiothoracic surgery | 31 |
| Otorhinology | 28 |
| Neurosurgery | 22 |
| Gynaecology | 22 |
| Ophthalmology | 21 |
| Plastic surgery | 18 |
| Obstetrics | 14 |
| Dental surgery | 8 |
| Cardioversion | 3 |
| Diagnostic procedure | 3 |
| Pain management | 3 |
| Electroconvulsive therapy | 1 |
| Other | 2 |
| Not specified | 10 |
| Total | 438 |