Hyperbilirubinemia after extracorporeal circulation surgery: A recent and prospective study

Table 3 Analysis of possible risk factors for the postoperative hyperbilirubinemia (mean ±  SD)

Possible risk factors	HB group	NHB group	P
Age (yr)	47 ± 1.16	46. ± 1.02	> 0.25
Body surface area (m2)	1.66 ± 0.01	1.63 ± 0.03	> 0.10
Preoperative TB (μmol/L)	26.8 ± 2.6	14.5 ± 2.3	< 0.01
Preoperative CB (μmol/L)	16.7 ± 1.4	8.4 ± 1.5	< 0.01
Preoperative TB/CB	1.69 ± 0.01	1.71 ± 0.02	> 0.30
Preoperative ALT (IU/L)	40.6 ± 3.9	28.5 ± 2.6	< 0.05
Preoperative AST (IU/L)	40.5 ± 3.6	42.6 ± 3.3	> 0.10
Right atrial pressure (mmHg)	9.5 ± 0.6	4.9 ± 0.5	< 0.01
Pulmonary artery pressure (mmHg)	35.5 ± 1.5	23.5 ± 1.3	< 0.01
Blood transfusion requirement (u)	3.56 ± 0.02	2.15 ± 0.03	< 0.01
Operation time (min)	220.5 ± 6.0	205.5 ± 5.3	> 0.15
CPB time (min)	130.3 ± 4.2	112.2 ± 3.1	< 0.01
Aortic crossclamp time (min)	76.6 ± 3.1	68.6 ± 2.3	< 0.01
Lowest nasopharyngeal temperature (°C)	26.7 ± 0.4	26.3 ± 0.3	> 0.25
Lowest MAP (mmHg)	68.6 ± 1.3	65.9 ± 1.5	> 0.15
Lowest PO2 (mmHg)	66.6 ± 1.4	68.7 ± 1.5	> 0.20