Table 2.
Perioperative variables of patients with or without PPCs
| Variables | Overall (n = 584) | With PPCs (n = 91) | Without PPCs (n = 493) | P value |
|---|---|---|---|---|
| Age (y) | 45.5 (31–55) | 51 (36–62) | 44 (30–54) | < 0.001 |
| Gender, male (%) | 307 (52.6%) | 43 (47.3%) | 264 (53.6%) | 0.269 |
| BMI | 23.0 (20.3–25.3) | 23.0 (20.0–25.7) | 22.9 (20.4–25.1) | 0.775 |
| ASA grade | 0.001 | |||
| Grade I (%) | 158 (27.1%) | 15 (16.5%) | 143 (29.0%) | |
| Grade II (%) | 388 (66.4%) | 63 (69.2%) | 325 (65.9%) | |
| Grade III (%) | 38 (6.5%) | 13 (14.3%) | 25 (5.1%) | |
| Pulmonary co-morbidities (%) | 63 (10.8%) | 12 (13.2%) | 51 (10.3%) | 0.422 |
| Current smoker (%) | 64 (11.0%) | 14 (15.4%) | 50 (10.1%) | 0.141 |
| Preoperative Albumin (g/L) | 41.3 (38.8–44) | 40.7 (37.1–43.3) | 41.4 (39.0–44.1) | 0.066 |
| Preoperative Hemoglobin (g/L) | 130 (118–142) | 128 (113–142) | 130 (119–142) | 0.307 |
| Estimated blood loss (L) | 1.5 (0.8–2.5) | 2.15 (1.0–3.9) | 1.5 (0.8–2.2) | < 0.001 |
| Duration of surgery (h) | 4.1 (3.2–5.6) | 5.2 (3.5–7.1) | 4.0 (3.1–5.3) | < 0.001 |
| Accumulative occlusion time (min) occlusion time (min) | 80 (58–104.5) | 91 (66–129) | 77 (57–102) | < 0.001 |
| ≥ 119 min (%) | 85 (14.6%) | 29 (31.9%) | 56 (11.4%) | < 0.001 |
| Length of stay (d) | 22 (18–28) | 27 (20–36) | 22 (18–27) | < 0.001 |
The data are presented as the median (25–75% interquartile range) or number (percentage)
Abbreviation: PPCs postoperative pulmonary complications, BMI body mass index, ASA American Society of Anesthesiologists