Table 3 Univariate analysis in postoperative hypoxemia
From: Risk factors for postoperative hypoxemia in patients undergoing Stanford A aortic dissection surgery
Characteristics | Hypoxemia group | Non-hypoxemia group | P value |
|---|---|---|---|
Age (years), mean (sd) | 51.70 (9.16) | 51.15 (8.74) | NS |
Gender (male) (%) | 50 | 50 | NS |
Height (cm), mean (sd) | 168.26 (8.48) | 170.11 (9.10) | NS |
Weight (cm), mean (sd) | 72.48 (15.16) | 69.44 (15.22) | NS |
BMI (kg/m2), mean (sd) | 25.55 (4.69) | 23.83 (4.12) | P=0.008 |
History of smoking (%) | 57.4 | 42.6 | NS |
Acute onset (%) | 56.2 | 43.8 | P=0.000 |
Preoperative hypoxemia (%) | 76.1 | 23.9 | P=0.000 |
History of previous cardiac operation (%) | 25 | 75 | NS |
Preoperative LVEF (%), mean (sd) | 56.50 (5.55) | 54.60 (8.94) | NS |
Hypertension (%) | 53.3 | 46.7 | NS |
Diabetes mellitus (%) | 80 | 20 | NS |
CPB time (min), mean (sd) | 185.50 (37.61) | 184.21 (36.24) | NS |
AO time (min), mean (sd) | 94.86 (33.97) | 93.35 (35.33) | NS |
CA time (min), mean (sd) | 29.29 (10.29) | 23.17 (8.54) | P=0.000 |
Postoperative LVEF<40% (%) | 66.7 | 33.3 | NS |
mechanical ventilation duration (hour), mean (sd) | 79.22 (62.31) | 41.45 (5.54) | NS |
Postoperative transfusion ≥3000 ml (%) | 76.1 | 23.9 | P=0.000 |