Fig. 5

a–d Neuro-ventilatory efficiency (NVE) and minute ventilation in groups of successful and unsuccessful vv-ECCO₂R weaning readiness test. From left to right, values obtained during first baseline (blood flow = 1000 mL/min and sweep gas flow = 10 L/min) and at blood flow to 750 mL/min and 500 mL/min with maintained sweep gas flow, followed by turning off sweep gas flow with 1000 mL/min blood flow and a second repeated baseline. For detailed description, see the main text. *Difference compared to baseline (*P < 0.05, **P < 0.01, ***P < 0.001)