Table 1 Multicenter observational studies of transfusion in general ICU patients
From: Red blood cell transfusion in the critically ill patient
Author | Year study was conducted | Country/region | No. of patients and number of ICUs | Percentage transfused in ICU | Pretransfusion hemoglobin level | Mean no. of units transfused in ICU | Mean age of blood (days) |
|---|---|---|---|---|---|---|---|
Hebert et al. [9] | 1993 | Canada | 5,298 patients in 6 ICUs | 25.0 | Mean: 8.6 ± 1.3 g/dl | NS | NS |
Vincent et al. [3] | 1999 | Western Europe | 3,534 patients in 146 ICUs | 37.0 | Mean: 8.4 ± 1.3 g/dl | 4.8 ± 5.2 | 16.2 ± 6.7 |
Rao et al. [6] | 1999 | UK | 1,247 patients in 9 ICUs | 53.0 | Median: 8.5 (IQR: 7.9-9) g/dl | 6.75 (hemorrhage) and 4.25 (anemia) | NS |
Corwin et al. [5] | 2000 - 2001 | USA | 4,892 patients in 284 ICUs | 44.0 | Mean: 8.6 ± 1.7 g/dl | 4.6 ± 4.9 | 21 ± 11.4 |
Walsh et al. [7] | 2001 | UK (Scotland) | 1,023 patients in 10 ICUs | 39.5 | Median: 7.8 (7.3-8.5) g/dl | Mean: 1.87 unit/ICU admission | NS |
French et al. [10] | 2001 | Australia and New Zealand | 1,808 patients in 18 ICUs | 19.8 | Median: 8.2 (range: 4.4-18.7) g/dl | Mean: 4.18 | NS |
Vincent et al. [34] | 2002 | Western and Eastern Europe | 3,147 patients in 198 ICUs | 33.0 | Median: 8.2 g/dl | 5.0 ± 5.8 | NS |
Westbrook et al. [8] | 2008 | Australia and New Zealand | 5,128 patients in 47 ICUs | 14.7 | Mean: 7.7 g/dl | Median: 2 (IQR: 1-4) | Median: 14 (IQR: 9.5-21.5) |