Patients with continuous insulin infusion had lower peak inotropic score during the first postoperative 24 hours and peak level of blood glucose ( 5.8 2.2 vs 8.2 3.1 g/kg/min ; P < 0.0001 ; 131.9 23.8 vs 191.1 38.5 mg/dL ; P < 0.001 , respectively ) , shorter duration of mechanical ventilation and intensive care unit stay and hospital stay compared with the control group ( 11.6 2.9 hours vs 14.8 3.5 hours ; P = 0.0002 ; 28.4 7.2 hours vs 36.5 7.8 hours ; P < 0.0001 ; 9.4 3.3 days vs 11.5 4.2 days ; P = 0.0283 , respectively ) .