Table 7. Level of risk and type of surgery and anesthesia by group.
| Descriptor | Epidural Group (n = 49) | IV Group (n = 49) |
| Risk scores | ||
| ASA physical status, n (%) | ||
| Class I | 0 (0.0) | 0 (0.0) |
| Class II | 16 (32.6) | 13 (26.5) |
| Class III | 28 (57.1) | 30 (61.2) |
| Class IV | 4 (8.2) | 5 (10.2) |
| RCRI score, n (%) | ||
| 0 risk factor | 3 (6.1) | 3 (6.1) |
| 1 risk factor | 23 (46.9) | 25 (51.0) |
| 2 risk factors | 20 (40.8) | 15 (30.6) |
| ≥3 risk factors | 3 (6.1) | 6 (12.2) |
| PPRI score, n (%) | ||
| Class 1 (0–15 points) | 5 (10.2) | 4 (8.2) |
| Class 2 (16–25 points) | 19 (38.8) | 18 (36.7) |
| Class 3 (26–40 points) | 22 (44.9) | 25 (51.0) |
| Class 4 (41–55 points) | 2 (4.1) | 1 (2.0) |
| Class 5 (>55 points) | 0 (0.0) | 0 (0.0) |
| Type of surgery, n (%) | ||
| Intra-abdominal | 28 (57.1) | 26 (53.1) |
| Gynecological | 3 (6.1) | 6 (12.2) |
| Urological | 6 (12.2) | 7 (14.3) |
| Vascular | 13 (26.5) | 11 (22.4) |
| Type of anesthesia | ||
| General anesthesia only | 6 (12.2) | 44 (89.8) |
| GA+neuraxial blockade | ||
| GA+thoracic epidural | 32 (65.3) | 3 (6.1) |
| GA+lumbar epidural | 5 (10.2) | 1 (2.0) |
| GA+spinal | 1 (2.0) | 0 (0.0) |
| GA+combined spinal-epidural | 0 (0.0) | 0 (0.0) |
| Neuraxial anesthesia only | ||
| Thoracic epidural | 1 (2.0) | 1 (2.0) |
| Lumbar epidural | 4 (8.2) | 0 (0.0) |
| Spinal | 0 (0.0) | 0 (0.0) |
| Combined spinal-epidural | 0 (0.0) | 0 (0.0) |
Abbreviation: ASA, American Society of Anesthesiologists; GA, general anesthesia; PPRI, Postoperative Pneumonia Risk Index; RCRI, Revised Cardiac Risk Index.