Table 1.
Preoperative patients' characteristics, operative surgical data, and post-operative outcome data.
| Variable | Total | Transfusion | No Transfusion | P Value | |
| Gender | Male | 97 (92.4%) | 63 (88.7%) | 34 (100%) | 0.1002 |
| Female | 8 (7.6%) | 8 (11.3%) | 0 (0%) | ||
| Age (years) | Mean ± SD | 58.28 ± 10.97 | 60.46 ± 10.69 | 53.73 ± 10.36 | 0.0028 |
| ≤ 65 years | 76 (72.4%) | 47 (66.2%) | 29 (85.3%) | 0.0405 | |
| > 65 years | 29 (27.6%) | 24 (33.8%) | 5 (14.7%) | ||
| Weight (Kg) | Mean ± SD | 72.67 ± 14.81 | 69.76 ± 12.05 | 78.74 ± 18.10 | 0.0032 |
| ≤ 70 | 51 (48.6%) | 43 (60.6%) | 8 (23.5%) | 0.0003 | |
| > 70 | 54 (51.4%) | 28 (39.4%) | 26 (76.5%) | ||
| B.S.A. (Kg/m2) | Mean ± SD | 1.75 ± 0.15 | 1.72 ± 0.15 | 1.79 ± 0.11 | 0.0249 |
| ≤ 1.75 | 55 (52.4%) | 43 (60.6%) | 12 (35.3%) | 0.0152 | |
| > 1.75 | 50 (47.6%) | 28 (32.4%) | 22 (64.7%) | ||
| B.M.I. | Mean ± SD | 27.07 ± 4.18 | 26.39 ± 4.52 | 28.49 ± 2.96 | 0.0155 |
| ≤ 25 | 35 (33.3%) | 31 (43.7%) | 4 (11.8%) | 0.0011 | |
| > 25 | 70 (66.7%) | 40 (56.3%) | 30 (88.2%) | ||
| Hb (gm/dL) | Mean ± SD | 13.59 ± 1.52 | 13.31 ± 1.59 | 14.18 ± 1.18 | 0.0055 |
| ≤ 13 | 39 (37.1%) | 31 (43.7%) | 8 (23.5%) | 0.0457 | |
| > 13 | 66 (62.9%) | 40 (56.3%) | 26 (76.5%) | ||
| Hct (%) | Mean ± SD | 39.18 ± 4.00 | 38.42 ± 4.07 | 40.99 ± 3.21 | 0.0062 |
| ≤ 40 | 52 (49.5%) | 42 (59.2%) | 10 (29.4%) | 0.0043 | |
| > 40 | 53 (50.5%) | 29 (60.8%) | 24 (70.6%) | ||
| Creatinine (μmol/L) | Mean ± SD | 106.79 ± 83.58 | 106.63 ± 53.82 | 107.12 ± 125.98 | 0.9780 |
| ≤ 100 | 74 (70.5%) | 44 (62%) | 30 (88.2%) | 0.0057 | |
| > 100 | 31 (29.5%) | 27 (38%) | 4 (11.8%) | ||
| Type of surgery | On-pump | 48 (45.7%) | 41 (57.7%) | 7 (20.6%) | 0.0003 |
| Off-pump | 57 (54.3%) | 30 (42.3%) | 27 (79.4%) | ||
| Use of RA | 70/105 (66.7%) | 53/71 (74.6%) | 17/34 (50%) | 0.0121 | |
| Number of distal anastmoses | 3.02 ± 0.88 | 3.14 ± 0.88 | 2.76 ± 0.82 | 0.0390 | |
| CPB time (min) | 99.53 ± 24.13 | 104.85 ± 24.88 | 98.60 ± 24.22 | 0.4731 | |
| Ao × time (min) | 62.85 ± 21.06 | 64.74 ± 19.87 | 51.85 ± 25.86 | 0.1347 | |
| Intubation time (hours) | 29.24 ± 78.06 | 37.11 ± 94.28 | 13.03 ± 5.680 | 0.03674 | |
| CSU stay (days) | 7.31 ± 15.40 | 7.54 ± 16.25 | 6.85 ± 13.66 | 0.8227 | |
| Hospital stay (days) | 9.19 ± 6.82 | 9.90 ± 8.08 | 7.67 ± 1.77 | 0.0294 | |
| Postoperative blood loss | |||||
| Mean ± SD | 883.59 ± 632 | 1005 ± 727 | 632 ± 207 | 0.0043 | |
| ≤ 1000 mL | 78 (74.3%) | 46 (64.8%) | 32 (94.1%) | 0.0012 | |
| > 1000 mL | 27 (25.7%) | 25 (35.2%) | 2 (5.9%) | ||
Data are presented as mean ± SD or No. (%).
B.S.A.: Body Service Area. B.M.I.: Body Mass Index.
Hb: Hemoglobin. Hct: Hematocrit.
RA: Radial Artery.
CPB time: Cardiopulmonary Bypass time.
Ao × time: Aortic cross clamp time. CSU: Cardiac Surgery Unit.