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

Table 2 The laboratory findings of study population

Variable	AKI (−) (n = 248)	AKI (+) (n = 88)	P value
BMI ((kg/m²))	23 ± 3	23 ± 2	0.960
SCr^a _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
CRP^a(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

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
^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)

ISSN: 1749-8090