Table 1.
Univariate analysis of preoperative characteristics of patients with or without PPCs
| Characteristics | none-PPCs group n = 157, (%) |
PPCs group n = 148, (%) |
P-value |
|---|---|---|---|
| Age, years (median, IQR) | 69 (66,72) | 70 (67,73) | 0.016 |
| Sex | 0.330 | ||
| female | 49 (31.2) | 54 (36.5) | |
| male | 108 (68.8) | 94 (63.5) | |
| BMI | 25.7 (24.0, 27.9) | 25.4 (23.4, 27.6) | 0.355 |
| ASA classification | 0.037 | ||
| < IV | 131 (83.4) | 109 (73.6) | |
| ≥IV | 26 (16.6) | 39 (26.4) | |
| NYHA classification | 0.002 | ||
| < III | 90 (57.3) | 58 (39.2) | |
| ≥III | 67 (42.7) | 90 (60.8) | |
| Hb (g/L) | 132.8 ± 18.0 | 131.7 ± 16.2 | 0.550 |
| Hct (%) | 39.9 ± 4.5 | 39.3 ± 4.8 | 0.310 |
| Smoking | 50 (31.8) | 60 (40.5) | 0.114 |
| Drinking | 46 (29.3) | 34 (23.0) | 0.209 |
| Hypertension | 116 (73.9) | 120 (81.8) | 0.133 |
| Diabetes mellitus | 65 (41.4) | 73 (49.3) | 0.165 |
| Hyperlipidemia | 65 (41.4) | 71 (48.0) | 0.249 |
| Myocardial infarction | 61 (38.9) | 47 (31.8) | 0.195 |
| Preoperative atrial fibrillation | 15 (9.6) | 17 (11.5) | 0.582 |
| Pulmonary hypertension | 2 (1.3) | 6 (4.1) | 0.246 |
| PCI | 27 (17.2) | 28 (18.9) | 0.696 |
| LVEF | 62.0 (54.0, 67.5) | 62.0 (56.0, 67.0) | 0.830 |
| Cerebral infarction | 45 (28.7) | 48 (32.4) | 0.475 |
| Cerebrovascular stenosis | 37 (23.6) | 38 (25.7) | 0.669 |
| Renal insufficiency | 6 (3.8) | 10 (6.8) | 0.251 |
| Hepatic insufficiency | 1 (0.6) | 7 (4.7) | 0.061 |
| Preoperative P/F ratio (mmHg) | 0.005 | ||
| ≥ 350 | 121 (77.1) | 92 (62.2) | |
| < 350 | 36 (22.9) | 56 (37.8) | |
| Chronic bronchitis | 13 (8.3) | 21 (14.2) | 0.101 |
| COPD | 3 (1.9) | 10 (6.8) | 0.036 |
Note: PPCs, postoperative pulmonary complications; BMI, body mass index; ASA, American Society of Anesthesiologists; NYHA, New York Heart Association; Hb, hemoglobin; Hct, hematocrit; PCI, Percutaneous Coronary Intervention; LVEF, Left ventricular ejection fraction; P/F ratio, PaO2/FiO2 ratio; COPD, chronic obstructive pulmonary disease