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Table 2 Biochemical criterion during hospitalization

From: The death risk factors of patients undergoing re-exploration for bleeding or tamponade after isolated off-pump coronary artery bypass grafting: a case–control study

  Overall patients Matched population
Survival group (N = 42) Death group (N = 16) P value Survival group (N = 15) Death group (N = 15) P value
Before OPCABG
cTnT, ug/L 0.019(0.02) 0.073(0.68) 0.028 0.016(0.02) 0.079(0.61) 0.110
PCO2, mmHG 39.14 ± 4.71 38.41 ± 5.70 0.648 39.10 ± 3.98 38.84 ± 5.05 0.878
PO2, mmHG 83(51) 96.4(55) 0.804 84.2(50) 96.85(53) 0.803
Lactic acid, mmol/L 1.48 ± 0.62 1.38 ± 0.78 0.621 1.37 ± 0.51 1.23 ± 0.59 0.477
Before re-exploration
ALT, U/L 31(30.5) 21(25) 0.432 30(23.48) 23(29) 0.604
Creatinine, μmoI/L 89(46.5) 97.5(56.5) 0.170 96(38.2) 98(50) 0.494
cTnT, ug/L 0.11(2.04)C 0.54(7.42)A 0.069 0.279(1.77)A 0.539(8.19)A 0.062
PCO2, mmHG 47.39 ± 11.97 44.16 ± 10.08 0.343 45.95 ± 12.42 44.57 ± 10.29 0.743
PO2, mmHG 67.9(39.9) 59.35(12.13) 0.689 53.22 ± 30.98 50.9 ± 14.20 0.821
Lactic acid, mmol/L 3(5.75) 9.2(11.93) 0.011 5.05 ± 3.00 8.38 ± 7.69 0.028
After re-exploration
ALT,U/L 89(391) 554(3717) 0.063 85(306) 582(3656) 0.052
Creatinine, μmoI/L 124(117) 217.5(161) 0.008 119.87 ± 94.15 233.59 ± 118.56 0.002
cTnT, ug/L 0.17(1.92)B 2.44(7.79)A 0.124 0.407(0.83) 3.457(5.59)A 0.017
PCO2, mmHG 43.3(15.6) 45.55(22.55) 0.021 42(13.7) 47(24) 0.101
PO2, mmHG 54.8(21.05) 59.7(34.87) 0.465 65.6(14.2) 63.1(36.90) 0.724
Lactic acid, mmol/L 2.9(2.5) 10.45(14.38)  < 0.001 2.6(1.9) 11.4(11.8)  < 0.001
  1. cTnT, cardiac troponin T; PCO2, partial pressure of carbon dioxide; PO2, partial pressure of oxygen; ALT, alanine transaminase; The index is the maximum value in 24 h; Missing data: Aout of 3 patients; Bout of 4 patients; Cout of 8 patients; The “after-exploration” values were taken the peak value within 24 h after return re-exploration