Table 2 Central venous O2 saturation (ScvO2), hemoglobin (Hb), heart rate (HR) and systolic arterial pressure (SAP) values (median [CI 95%]) in 53 hemodynamically stable postoperative patients who received blood transfusion (BT), divided into two groups according to their ScvO2 before blood transfusion (< or ≥ 70%); and then into four groups according to agreement or not with the SRLF recommendations for transfusion.
From: Venous oxygen saturation as a physiologic transfusion trigger
|  | ScvO2 < 70% | ScvO2 ≥ 70% |  | ||
|---|---|---|---|---|---|
SRLF recommendations | Yes (n = 15) | No (n = 13) | Yes (n = 18) | No (n = 7) | Kruskal-Wallis test (p < .05) |
ScvO2 preBT | 57.4 [48.2-62.0] | 58.0 [55.3-65.0] | 76.9 [72.0-80.8] | 75.7 [75.0-86.4] | p < 0.001 |
ScvO2 postBT | 68.7* [63.0-75.6] | 67.8* [60.7-72.0] | 78.7 [70.0-84.2] | 74,0* [65.0-76.7] | p < 0.01 |
Hb preBT | 7.4 [7.1-7.9] | 7.8 [7.4-8.7] | 7.5 [7.3-8.1] | 8.1 [7.5-8.2] | Ns |
Hb postBT | 9.4** [8.7-9.7] | 10.0** [9.4-10.6] | 10.1** [9.3-10.6] | 9.8* [9.4-10.7] | Ns |
HR preBT | 88 [78-90] | 96 [93-120] | 92 [85-105] | 95 [81-112] | Ns |
HR postBT | 92 [84-97] | 95 [89-100] | 89 [78-104] | 96 [78-100] | Ns |
SAP preBT | 118 [101-141] | 130 [120-150] | 128 [114-150] | 130 [124-151] | Ns |
SAP postBT | 133 [119-140] | 120 [106-140] | 141* [128-161] | 140* [133-175] | p = 0.047 |