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Table 1 Demographic and clinical characteristics between ALI and non-ALI patients

From: Plasma level of advanced oxidation protein products as a novel biomarker of acute lung injury following cardiac surgery

  ALL (n = 70) ALI (n = 18) Non-ALI (n = 52) P value
Basic parameters
 Male (n) 37 12 25 <0.001
 Age (years) 47.9 ± 11.3 57.7 ± 11.6 46.6 ± 11.4 0.105
 Body mass index 21.6 ± 3.60 22.9 ± 2.90 21.1 ± 3.8 0.081
 Smoking (n) 15 6 9 0.153
 COPD (n) 7 5 2 0.01
 Hypertension (n) 9 6 3 0.007
 Diabetes mellitus (n) 4 3 1 0.05
 Cardiothoracic ratio 0.61 ± 0.09 0.63 ± 0.08 0.61 ± 0.1 0.415
 LVEF(%) 59.9 ± 7.0 57.9 ± 6.5 60.6 ± 7.1 0.154
Intraoperative parameters
 Type of surgery     0.223
  Coronary artery disease (%) 11 (15.7 %) 5 (27.8 %) 6 (11.5 %)  
  Valve heart disease (%) 52 (74.3 %) 12 (66.7 %) 40 (77.0 %)  
  Congenital heart disease (%) 7 (10 %) 1 (5.5 %) 6 (11.5 %)  
 CPB time (min) 106.4 ± 37.8 116.3 ± 31.5 102.9 ± 39.4 0.198
 Clamp time (min) 68.5 ± 30.8 73.3 ± 24 66.9 ± 32.9 0.452
Peri-operative risk factors
 Preoperative AOPPs (μmol/L) 46.0 ± 10.5 47.1 ± 7.9 44.8 ± 10.8 0.394
 SICU stay (days) 3 (2, 5) 7.3 ± 4.4 3 (2, 3) <0.001
 Hospital stay (days) 17.3 ± 5.9 24.4 ± 5.8 14.8 ± 3.4 <0.001
  1. Data are presented as number of patients (%), mean ± SD, or counts, as appropriate
  2. ALI acute lung injury, COPD chronic obstructive pulmonary disease, LVEF left ventricular ejection fraction, CPB cardiopulmonary bypass, SICU surgery intensive care unit