- Comparative baseline characteristics of the patients.
| Parameters | n (%) |
|---|---|
| Age (years), median (min-max) | 75 (53-94) |
| Gender | |
| Female | 27 (50.9) |
| Male | 26 (49.1) |
| Cigarette smoking | 32 (60.4) |
| Major comorbidities | |
| Coronary artery disease | 22 (41.5) |
| Hypertension | 36 (67.9) |
| Diabetes mellitus | 39 (75.6) |
| COPD | 28 (52.8) |
| Heart failure | 18 (34.0) |
| ASA score | |
| ASA 3 | 33 (62.3) |
| ASA 4 | 20 (37.7) |
| Preoperative stage | |
| I | 3 (5.7) |
| II | 19 (35.8) |
| III | 26 (49.0) |
| IV | 5 (9.4) |
| Operations | |
| Right hemicolectomy | 9 (17.0) |
| Extended right hemicolectomy | 5 (9.4) |
| Left hemicolectomy | 5 (9.4) |
| Extended left hemicolectomy | 1 (1.9) |
| Low anterior resection | 22 (41.5) |
| Abdominoperineal resection | 4 (7.5) |
| Total colectomy | 7 (13.2) |
Values are presented as numbers and percentages (%), COPD: chronic obstructive pulmanary disease, ASA: America Association of Anesthesiology