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Table 2 The laboratory findings of study population

From: The predictive value of the prognostic nutritional index for postoperative acute kidney injury in patients undergoing on-pump coronary bypass surgery

Variable AKI (−)
(n = 248)
AKI (+)
(n = 88)
P value
BMI ((kg/m2)) 23 ± 3 23 ± 2 0.960
SCra adm (mg/dl) 0.87 (0.77–0.97) 0.95 (0.79–1.10) 0.045
eGFR (mL/minute/1.73 m2) 84.8 ± 18.4 78.4 ± 24.2 0.010
Serum albumin (mg/dl) 3.9 ± 0.4 3.4 ± 0.5 < 0.001
Lymphocyte count (× 103/μL) 2.2 ± 0.6 1.9 ± 0.8 <  0.001
WBC (× 103/μL) 8.61 ± 1.95 8.44 ± 1.89 0.466
Hemoglobin (g/dl) 13.0 ± 1.5 12.1 ± 1.6 < 0.001
LVEF (%) 50 ± 6 49 ± 7 0.283
CRPa(mg/dl) 3 (2–5) 4 (3–7) 0.017
CPB time (min) 60 ± 11 61 ± 11 0.388
X-Clamp time (min) 40 ± 10 41 ± 9 0.538
PNI 50.7 ± 5 43.7 ± 7 <  0.001
  1. Abbreviations: AKIN acute kidney injury, LVEF left ventricular ejection fraction, SCr serum creatinine at admission, eGFR estimated glomerular filtration rate, WBC white blood cell, BMI body mass index, CRP C-reactive protein, PNI prognostic nutritional index, CPB cardiopulmonary bypass
  2. aComparison was made using Mann-Whitney U test at P < 0.05, and these values were described by median with inter-quartile range (25th and 75th percentile)