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Table 2 Patient characteristics, comorbidities, and procedure-related variables

From: Different duration strategies of perioperative antibiotic prophylaxis in adult patients undergoing cardiac surgery: an observational study

  All Group I Group II p-value
n = 615 n = 283 n = 332
Sex     0,85
  • Men; n (%) 464 (75,4) 215 (75,9) 249 (75)  
  • Female; n (%) 151 (24,6) 68 (24,1) 83 (25)  
Age (years) 68,7 ± 9,8 69,2 ± 9,7 68,3 ± 9,9 0,27
BMI (kg/m2) 28,3 ± 4,2 28,3 ± 4,0 28,3 ± 4,4 0,80
Diabetes mellitus; n (%) 181 (29,4) 88 (31) 93 (28) 0,89
COPD; n (%) 82 (13,3) 34 (12) 48 (14,4) 0,22
PAOD; n (%) 61 (9,9) 23 (8,1) 38 (11,4) 0,18
Creatinine (mg/dL) 1,0 ± 0,3 1,0 ± 0,2 1,0 ± 0,3 0,44
Dialyse; n (%) 13 (2,1) 7 (2,4) 6 (1,8) 0,59
EF < 30%; n (%) 53 (8,6) 23 (8,1) 30 (9,0) 0,93
Resucitation     0,60
  • No; n (%) 592 (96,2) 275 (97,1) 317 (95,4)  
  • <48 h 13 (2,1) 4 (1,4) 9 (2,7)  
  • <21 days 9 (1,4) 4 (1,4) 5 (1,5)  
  • >21 days 1 (0,1) 0 (0) 0 (0)  
PMV; n (%) 10 (1,6) 5 (1,7) 5 (1,5) 1,00
IABP preoperative; n (%) 111 (18) 46 (16,2) 65 (19,5) 0,30
State of operation; n (%)     0,79
  • Elective 416 (67,6) 197 (69,6) 219 (65,9)  
  • Urgent 138 (22,4) 59 (20,8) 79 (23,7)  
  • Emergency 53 (8,6) 23 (8,1) 30 (9,0)  
  • Resuscitation 8 (1,3) 4 (1,4) 4 (1,2)  
Type of procedure; n (%)     0,30
  • isolated CABG 550 (89,4) 249 (87,9) 301 (90,6)  
  • CABG ± valve surgery 65 (10,6) 34 (12,1) 31 (9,4)  
Procedure related variables     
  • Operating time (min) 218 ± 55 219 ± 58 218 ± 53 0,88
  • Bypass time (min) 95 ± 32 97 ± 34 94 ± 30 0,49
  • Clamping time (min) 69 ± 25 70 ± 26 68 ± 24 0,38
OPCAB; n (%) 36 (5,8) 18 (6,3) 18 (5,4) 0,41
ICU duration (days) 2,9 ± 2,6 2,9 ± 2,5 3,0 ± 2,6 0,66
Mobilisation; n (%)     0,44
  1. pod 116 (18,8) 51 (18,0) 65 (19,5)  
  2. pod 255 (41,4) 130 (45,9) 125 (37,6)  
  3. pod 178 (28,9) 79 (27,9) 99 (29,8)  
  Not mobilized 30 (10,9) 13 (8,2) 17 (12,9)  
Transfusion of RBC (n) 1,5 ± 3,3 1,5 ± 3,1 1,5 ± 3,6 0,87
Resuscitation; n (%) 21 (3,4) 10 (3,5) 11 (3,3) 1,00
Reintubation; n (%) 32 (5,2) 16 (5,6) 16 (4,8) 0,70
  • Tracheotomy 5 (0,8) 2 (0,7) 3 (0,9)  
TPS; n (%) 26 (4,2) 13 (4,5) 13 (3,9) 0,92
Revision; n (%) 38 (6,1) 21 (7,4) 17 (5,1) 0,18
Periop. MI; n (%) 5 (0,8) 1 (0,3) 4 (1,2) 0,38
  1. BMI Body Mass Index, COPD chronic obstructive pulmonary disease, PAOD peripheral arterial obstructive disease, EF ejection fraction, PMV preoperative mechanical ventilation, IABP intraaortic balloon pulsation, CABG coronary artery bypass grafting, OPCAB off-pump coronary artery bypass, ICU intensive care unit, pod postoperative day, RBC red blood concentrate, TPS transitory psychotic syndrome, Periop. MI perioperative myocardial infarction.