Surgical procedure and perioperative risk
| Frequency (%) | |
| Vascular surgery | 531 (25.9) |
| Aorta | 160 (7.8) |
| Suprainguinal vascular | 98 (4.8) |
| Infrainguinal vascular | 158 (7.7) |
| Carotid endarterectomy | 97 (4.7) |
| Other vascular | 18 (0.9) |
| Non-vascular surgery | 1520 (74.4) |
| Thorax | 85 (4.1) |
| Abdomen | 501 (24.4) |
| Head and neck | 178 (8.7) |
| Orthopaedic | 439 (21.4) |
| Prostate | 82 (4.0) |
| Neurosurgery | 55 (2.7) |
| Other surgery | 182 (8.9) |
| General anaesthesia | 1994 (97.1) |
| Urgent surgery | 93 (4.5) |
| RCRI (median, interquartile range) | 1 (0–2) |
| RCRI = 0 | 555 (27.0) |
| RCRI = 1 | 846 (41.2) |
| RCRI = 2 | 579 (28.2) |
| RCRI = 3 | 69 (3.4) |
| RCRI = 4 | 5 (0.2) |
| High risk surgery by RCRI* | 844 (41.1) |
Data are shown as frequency (%).
*Defined by intraperitoneal, intrathoracic or suprainguinal vascular surgery according to RCRI (Revised Cardiac Risk Index modified by Lee).