Table 1 Baseline characteristics for total cohort and patient subgroupsa
Characteristics | Total cohort (N= 1,326) | Inotrope-unexposed (n= 783) | Inotrope-exposed (n= 531) |
|---|---|---|---|
Demographics | Â | Â | Â |
   Mean age (± SD) | 66.1 (11.0) | 64.6 (10.7) | 68.3 (11.0) |
   Age ≥ 80 years, n (%) | 123 (9.3) | 51 (6.5) | 72 (13.6) |
   Females, n (%) | 404 (30.5) | 188 (24.0) | 207 (39.0) |
   Mean Parsonnet score (± SD) | 13.4 (10.6) | 10.5 (8.3) | 17.2 (11.7) |
Medical history | Â | Â | Â |
   Prior cardiac surgery, n (%) | 78 (5.9) | 26 (3.3) | 48 (9.0) |
   Hypertension, n (%) | 904 (68.2) | 534 (68.2) | 362 (68.2) |
   Diabetes, n (%) | 417 (31.5) | 220 (28.1) | 193 (36.4) |
   Atrial fibrillation, n (%) | 135 (10.2) | 53 (6.8) | 80 (15.1) |
   Preoperative CHF, n (%) | 179 (13.5) | 79 (10.1) | 99 (18.6) |
   Preoperative renal dysfunction, n (%) | 94 (7.1) | 31 (4.0) | 61 (11.5) |
   Preoperative dialysis, n (%) | 21 (1.6) | 9 (0.7) | 12 (2.3) |
   Mean LVEF (± SD) | 49.7 (11.8) | 53.3 (11.8) | 44.4 (15.8) |
   LVEF < 30%, n (%) | 241 (18.2) | 74 (9.5) | 162 (30.5) |
Procedure-related variables | Â | Â | Â |
   CABG only, n (%) | 912 (68.8) | 601 (76.8) | 303 (57.1) |
   Other procedure, n (%) | 414 (31.2) | 182 (23.2) | 228 (42.9) |
   Perioperative IABP, n (%) | 132 (10.0) | 30 (3.8) | 96 (18.1) |
   Received inotropes intraoperative, n (%) | 666 (50.7) | 219 (28.0) | 447 (84.2) |
   Emergency operation, n (%) | 132 (10.0) | 58 (7.4) | 74 (13.9) |
   Reoperation, n (%) | 78 (5.9) | 20 (2.6) | 35 (6.6) |
   Mean bypass time, minutes (± SD) | 101.2 (45.7) | 86.8 (32.8) | 120 (52) |
   Severe postoperative bleeding, n (%) | 50 (3.8) | 15 (1.1) | 35 (6.6) |