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Table 1 Preoperative, perioperative and postoperative patient characteristics ( N = 984) a

From: Albumin administration is associated with acute kidney injury in cardiac surgery: a propensity score analysis

Preoperative characteristics   Perioperative and postoperative characteristics  
Age (yr) 66 ± 10 Use of intra-aortic balloon (%) 6.3
Female (%) 25 Heart valve surgery (%) 23
Caucasian (%) 94 CABG (%) 93
Active smoking status (%) 27 Duration of ECC (hr) (IQR) 1.1 (0.9 to 1.5)
Initial GFR (ml/min/1.73 m2) 72 ± 19 Urgent surgery (%) 14
Comorbidities   Reintervention (%) 4
  Hypertension (%) 72 Postoperative cardiovascular SOFA score ≤2, >2 (%) 51, 49
  Diabetes (%) 31 Perioperative transfusions  
  Hyperlipidemia (%) 69   Red blood cells (0, 1, 2, ≥3 U) (%) 45, 15, 14, 22
 Peripheral vascular disease (%) 8   Platelets (0, ≤10, >10 U) (%) 80, 17, 3
  Stroke (%) 7   Fresh frozen plasma (0, ≤5, >5 U) (%) 80, 16, 4
  MI within the past 7 days (%) 13   
LVEF ≤35%, 36% to 49%, ≥50% (%) 9, 14, 77 AKI (%)  
Drugs used within 5 days prior to surgery     AKIN stage 1 12.0
  Diuretics (%) 34   RIFLE risk 5.3
  RASB (%) 59   RIFLE injury 1.9
  NSAIDs (%) 9   RIFLE failure 0.7
Contrast agent for angiography (%) 26   
Preoperative hemoglobin (g/L) 130 ± 17   
  1. aResults are expressed as mean ± standard deviation, median (interquartile range (IQR)) or percentage as appropriate. AKI, acute kidney injury; AKIN, Acute Kidney Injury Network; CABG, Coronary artery bypass graft; ECC, Extracorporeal circulation; GFR, Glomerular filtration rate; LVEF, Left ventricular ejection fraction; MI, Myocardial infarction; NSAIDs, Nonsteroidal anti-inflammatory drugs; RASB, Renin angiotensin blockade; RIFLE, Risk, injury, failure, loss and end-stage kidney disease; SOFA, Sequential Organ Failure Assessment.