Examples of 2 of the 9 sets of curves. On the left the ECMO pump (E) was set at 1 l/min and the shunt pump (S) was set at 0.5l/min, giving a 50% shunt. On the right the shunt pump flow has been rerduced to give a 12% shunt. In each panel the red line shows the curve recorded from the sensor in the patient circuit and the blue line shows the curve recorded from the sensor in the ECMO circuit.