Table 2.
Transfusion related data from each institution, APACHE II groups, and age ranges among patients who received and did not receive red cell transfusions
| Institution | ||||||||
| Variable | 1 | 2 | 3 | 4 | 5 | 6 | Overall | |
| Number of patients | 1355 | 916 | 672 | 851 | 708 | 796 | 5298 | |
| No. of transfusions (%) | ||||||||
| Not transfused | 88 | 70 | 68 | 65 | 65 | 82 | 75 | |
| 1-3 units | 7 | 19 | 17 | 16 | 16 | 9 | 13 | |
| 4-6 units | 3 | 6 | 8 | 9 | 8 | 5 | 6 | |
| 160; 7-9 units | 1 | 2 | 3 | 4 | 3 | 1 | 2 | |
| ≥ 10 units | 1 | 3 | 4 | 6 | 8 | 3 | 4 | |
| No. of units/patient-days | 0.82 ± 1.68 | 0.88 ± 1.12 | 0.94± 1.58 | 1.08 ± 1.27 | 0.96 ± 1.54 | 1.04± 1.06 | 0.95 ± 1.39 | |
| Haemoglobin concentrations (g/l)*† | ||||||||
| Transfusion episodes | 85 ± 14.0 | 88 ± 13.8 | 81 ± 10.7 | 87 ± 13.8 | 90 ± 11.6 | 80 ± 14.7 | 86 ± 13.3 | |
| (n =2758) | ||||||||
| APACHE II | ||||||||
| ≥ 15 (n =2126) | 83 ± 14.4 | 87 ± 14.1 | 81 ± 11.5 | 85 ± 13.1 | 90 ± 11.7 | 80 ± 14.5 | 86 ± 13.4 | |
| < 15 (n = 632) | 88 ± 12.3 | 89 ± 12.5 | 81 ± 9.7 | 95 ± 15.8 | 87 ± 9.6 | 79 ± 14.9 | 85 ± 13.0 | |
| Diagnostic categories | ||||||||
| Trauma (n =405) | 88 ± 18.0 | 82 ± 11.2 | 83 ± 10.0 | 90 ± 17.5 | 89 ± 14.8 | 80 ± 8.2 | 88 ± 13.6 | |
| Respiratory (n = 525) | 87 ± 14.2 | 83 ± 17.7 | 78 ± 7.7 | 90 ± 13.7 | 86 ± 11.6 | 86 ± 11.8 | 86 ± 11.8 | |
| Cardiovascular (n = 317) | 82 ± 9.7 | 82 ± 19.1 | 73 ± 20.7 | 75 ± 17.6 | 85 ± 10.6 | 72 ± 16.3 | 80 ± 21.8 | |
| Postoperative (n =230) | 85 ± 12.5 | 87 ± 13.4 | 79 ± 11.9 | 89 ± 18.4 | 95 ± 13.2 | 86 ± 14.3 | 87 ± 14.1 | |
| No transfusion episodes | 119 ± 21.0 | 111 ± 21.0 | 101 ± 16.0 | 109 ± 16.0 | 114 ± 22.0 | 108 ± 22.0 | 112 ± 21.8 | |
| (n =2971) | ||||||||
| APACHE II | ||||||||
| ≥ 15 (n =1251) | 107 ± 21.9 | 110 ± 22.6 | 95 ± 19.2 | 107 ± 23.9 | 111 ± 22.0 | 104 ± 22.3 | 107 ± 23.7 | |
| < 15 (n = 1720) | 123 ± 19.7 | 111 ± 19.3 | 102 ± 14.5 | 114 ± 18.7 | 124 ± 19.5 | 110 ± 22.0 | 115 ± 13.0 | |
| Diagnostic categories | ||||||||
| Trauma (n = 247) | 109 ± 19.9 | 109 ± 21.8 | 115 ± 23.3 | 100 ± 25.3 | 120 ± 26.1 | 108 ± 24.1 | 110 ± 24.2 | |
| Respiratory (n = 469) | 115 ± 21.7 | 115 ± 24.2 | 102 ± 21.0 | 107 ± 23.1 | 109 ± 19.1 | 108 ± 24.1 | 110 ± 22.2 | |
| Cardiovascular | ||||||||
| (n =731) | 124 ± 20.9 | 106 ± 22.7 | 102 ± 16.2 | 112 ± 20.6 | 116 ± 25.1 | 105 ± 20.5 | 119 ± 16.7 | |
| Postoperative | ||||||||
| (n = 309) | 108 ± 13.7 | 99 ± 15.9 | 103 ± 14.7 | 77 ± 4.2 | 105 ± 13.8 | 98 ± 17.8 | 102 ± 15.6 | |
| Overall (n = 5729) | 106 ± 25.2 | 99 ± 21.4 | 91 ± 16.6 | 98 ± 21.8 | 98 ± 19.6 | 99 ± 23.9 | 99 ± 22.3 | |
*5% of the 5298 patients did not have information related to their transfusion status. Variables reported as means ± SD unless otherwise stated. †Haemoglobin values in this table represent the pre-transfusion values in patients receiving red cells and minimum haemoglobin values during the ICU stay in non-transfused patients. More than one value may be reported for a patient.