Table 1. Patients’ characteristics and details of surgery (N=78).
| Parameter | Value (%) |
|---|---|
| Male (n) | 57 (73.1) |
| Age [years] | 61.5 [33-78]* |
| Body mass index (kg/m2) | 23.6±3.2 |
| Body mass index ≥25 (n) | 23 (29.5) |
| Positive smoking history (n) | 43 (55.1) |
| Smoking index ≥400 cigarette-years (n) | 35 (44.9) |
| COPD (n) | 17 (21.8) |
| Hypertension (n) | 21 (26.9) |
| Diabetes mellitus (n) | 7 (9.0) |
| Preoperative laboratory test | |
| Hemoglobin (g/L) | 131.2±14.6 |
| White blood cell count (×109/L) | 6.2±1.4 |
| Albumin (g/L) | 41.2±4.8 |
| Pulmonary function test | |
| % pre, FEV1 | 84.8±17.2 |
| ≥80% pre (n) | 45 (57.7) |
| 70-80% pre (n) | 16 (20.5) |
| <70% pre (n) | 17 (21.8) |
| % pre, MVV | 93.5±23.3 |
| % pre, DLco | 90.7±23.3 |
| ≥70% pre (n) | 62 (79.5) |
| <70% pre (n) | 16 (20.5) |
| Surgical procedure | |
| Open lobectomy (n) | 57 (73.1) |
| Duration of operation (min) | 192.6±52.5 |
| Duration of operation ≤3 hrs (n) | 39 (50.0) |
| Volume of blood loss (mL) | 100 [20-1,500]* |
| Volume of blood loss ≤300 mL (n) | 70 (89.7) |
| ICU | |
| Mechanical ventilation (hours) | 3.7±2.4 |
| PaO2 (mmHg) | 143.0±56.8 |
| PaCO2 (mmHg) | 41.3±5.4 |
| Histology | |
| Squamous cell carcinoma (n) | 27 (34.6) |
| Adenocarcinoma (n) | 34 (43.6) |
| Adenosquamous carcinoma (n) | 13 (16.7) |
| Others (n) | 4 (5.1) |
Data are presented as mean ± SD or n (%) unless otherwise stated. *, these data are described with median and range; COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in one second; MVV, maximum ventilatory volume; DLco, diffusion capacity of the lung for carbon monoxide; ICU, intensive care unit.