Fig. 4
a An average of 0.4 units of whole blood was administered in the conventional group per patient. No blood was administered in the pressure field group. b Change in haemoglobin concentration was positively correlated with blood transfused in the conventional treatment group (∆[Hb] = 5.1 × units of blood-54 g/L, R2 = 0.134, p < 0.001). c There was no correlation between intravenous fluid administered in the pressure field management group and change in haemoglobin concentration. Fluid load data unavailable for the conventional treatment group