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Table 2 Surgical procedures and performance

From: A perioperative infusion of sodium bicarbonate does not improve renal function in cardiac surgery patients: a prospective observational cohort study

  Total cohort Control - no bicarbonate Intervention - bicarbonate Significance, P-value
Number 584 304 (52.1%) 280 (47.9%)  
Type of procedure     
CABG 222 (38.1) 110 (36.3%) 112 (40.0%) 0.160
Valve surgery +/- varia 176 (30.1%) 93 (30.7%) 82 (28.9%)  
CABG +/- valve +/- varia 120 (20.6%) 71 (23.4%) 49 (17.5%)  
Aortic surgery +/- valve +/- varia 54 (9.3%) 21 (6.9%) 33 (11.8%)  
Various procedures 10 (1.7%) 8 (2.6%) 3 (1.1%)  
Aortic surgery +/- CABG 2 (0.3%) 1 (0.3%) 1 (0.4%)  
Duration of surgery, minutes 254 (247, 261) 249 (242, 260) 258 (250, 268) 0.406
Duration of CPB, minutes 115 (110, 119) 115 9 (107, 122) 115 (109, 120) 0.756
Crossclamp time, minutes 89.5 (84, 93) 88.5 (82, 93) 90 (83, 96) 0.539
ECLS 7 (1.2%) 3 (1.0%) 4 (1.4%) 0.913
IABP     
   No IABP 556 (95.2%) 289 (95.1%) 267 (95.4%) 0.445
   IABP before CPB 6 (1.0%) 2 (0.7%) 4 (1.4%)  
   IABP during CPB 8 (1.4%) 6 (2.0%) 2 (0.7%)  
   IABP after CPB 8 (1.4%) 3 (1.0%) 5 (1.8%)  
   IABP on ICU 6 (1.0%) 4 (1.3%) 2 (0.7%)  
Circulatory arrest 21 (3.6%) 13 (4.3%) 8 (2.9%) 0.485
Lowest body temperature, °C 32 (32, 32) 32 (32, 32) 32 (32, 32) 0.615
  1. Surgical procedures and surgical core data are shown for patients undergoing elective on-pump cardiac surgery with or without a perioperative infusion of bicarbonate. CABG: coronary artery bypass grafting; CPB: cardiopulmonary bypass; ECLS: extracorporeal life support; IABP: intra-aortic balloon pump. Data are given as absolute numbers (percentage) for nominal variables and as median (95% confidence interval).