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Table 2 Baseline procedural characteristics of group I and group II

From: Application of bilateral internal mammary artery with different configurations in coronary artery bypass grafting

Items Group I(n = 20) Group II(n = 54) P
Operation time(h) 5.2 ± 1.2 5.5 ± 1.2 0.457
Heparin protamine time (min) 138.9 ± 41.0 173.4 ± 58.9 0.019
Off-pump 13 (65.0%) 36 (66.7%) 0.893
Number of anastomosis 3.2 ± 0.9 3.3 ± 0.8 0.621
Perioperative MI 1 (5.0) 2 (3.7%) 1.000
CRRT (n, %) 1 (5.0%) 7 (13.0%) 0.435
Volume of blood (ml) 760.0 ± 373.3 772.2 ± 516.1 0.923
RBC transfusion(U) 2.1 ± 2.4 2.4 ± 4.2 0.738
Re- thoracotomy 0 (0) 2 (3.7%) 1.000
Sternal complication 1 (5.0%) 1 (1.9%) 0.470
Ventilator time(h) 17.1 ± 17.2 22.8 ± 42.4 0.567
ICU stay time(h) 43.9 ± 39.5 46.7 ± 54.6 0.835
Post-operative stay time(d) 10.7 ± 5.0 11.1 ± 7.5 0.827
  1. CRRT continuous renal replacement therapy, RBC red blood cell, ICU intensive care unit