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Table 2 Physiologic and near-infrared spectroscopy-derived variables before and 1 hour after red blood cell transfusion

From: The effect of red blood cell transfusion on tissue oxygenation and microcirculation in severe septic patients

  Full Sample Subgroup
   Baseline After Transfusion   Baseline After Transfusion
  n Mean (SD) Mean (SD) p n Mean (SD) Mean (SD) p
Hemoglobin (g/dl) 21 7.2 (0.8) 8.7 (1.1) 0.00 11 7.5 (0.8) 8.9 (1.1) 0.00
Heart Rate (beats/min) 21 91
(15)
91 (15) 0.34 11 91 (18) 89 (18) 0.14
Temperature (°F) 21 97.8 (1.2) 97.7 (1.2) 0.65 11 98.1 (1.2) 98.1 (1.2) 0.96
Mean arterial pressure (mmHg) 21 69.6 (8.7) 73.5 (11.1) 0.08 11 67.3 (7.9) 73.2 (12.1) 0.02
Central venous pressure (mmHg) 12 16 (5.7) 16.2 (4.3) 0.79 7 15.2 (4.3) 16.1 (5) 0.34
Lactate (mmol/l) 12 4.1 (3.5) 3.9 (3.4) 0.47 6 3.7 (2.1) 3.8 (2.4) 0.73
Arterial partial pressure of oxygen (mmHg) 6 124.6 (97.6) 95.2 (29.2) 0.49 3 164 (137.1) 101 (38) 0.5
pH 6 7.3(0.1) 7.3 (0.1) 0.62 3 7.3(0.1) 7.3(0.1) 0.24
Central venous oxygen saturation (%) 10 59.1 (9.2) 63.8 (8.8) 0.11 6 62.3 (9.2) 64.6 (8.9) 0.48
SaO2/FiO2 21 264.1 (114.8) 270.9 (97.2) 0.46 11 249.5 (105.9) 259.1 (91.5) 0.19
Thenar tissue oxygen saturation (%) 21 76.2 (9.3) 75.8 (8.1) 0.80 11 76.8 (8.4) 75.8 (8.8) 0.69
Tissue hemoglobin index (arbitrary units) 21 10.7 (3.4) 12.2 (3.5) 0.01 11 10.9 (3.1) 12.2 (4.1) 0.07
Thenar tissue oxygen saturation upslope of the reperfusion phase (%/second) 21 2.5 (1.3) 2.6 (1.5) 0.39 11 2.2 (1) 2.1 (1.1) 0.78
Muscle oxygen consumption (arbitrary units) 21 113.6 (56.43) 124.1 (43.6) 0.26 11 104.4 (41.1) 112.5 (40.3) 0.5