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Table 1 Preoperative patient characteristics

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
Sex, male 36(85.71%) 12(75%) 0.564 14(93.33%) 11(73.33%) 0.330
Age, years 64.67 ± 8.02 63.75 ± 10.10 0.719 63.13 ± 6.90 63.533 ± 10.41 0.902
BMI, kg/m2 24.02 ± 3.23 26.24 ± 3.52A 0.030 24.53 ± 3.22 26.24 ± 3.52 0.062
Hypertension 25(59.52%) 11(68.75%) 0.517 6(40%) 11(73.33%) 0.139
Diabetes 17(40.48%) 7(43.75%) 0.821 4(26.67%) 6(40%) 0.700
Carotid artery stenosis 17(47.22%)D 9(69.23%)C 0.173 8(53.33%) 9(69.23%)B 0.560
Cerebral infarction 8(19.05%) 5(31.25%) 0.520 4(26.67%) 5(33.33%) 1.000
Heart insufficiency 10(23.81%) 10(66.67%)A 0.003 4(26.67%) 10(66.67%) 0.066
Respiratory insufficiency 17(47.22%)D 6(42.86%)B 0.781 4(26.67%) 5(33.33%)B 1.000
Hepatic insufficiency 11(27.5%)B 4(26.67%)A 1.000 4(26.67%) 4(26.67%) 1.000
Renal insufficiency 7(17.5%)B 2(13.33%)A 0.895 0(0%) 2(13.33%) 0.483
Time between myocardial infarction and surgery, days, (Q1–Q3) 14(10–16) 11.50(7.25–17.75) 0.239 15.67 ± 7.05 13.6 ± 7.64 0.239
  1. BMI, body mass index; carotid artery stenosis was diagnosed by Doppler ultrasonography; Heart insufficiency, LVEF < 50%; Respiratory insufficiency, PO2 < 83 mmHg; Hepatic insufficiency, ALT > 50 U/L; Renal insufficiency, creatinine > 132μmoI/L; Missing data: Aout of 1 patient; Bout of 2 patients; Cout of 3 patients; Dout of 6 patients