Carbon dioxide: Global warning for nephrologists

Figure 5 Performance of “RecirCO₂lation” test to detect vascular access recirculation. Receiver operating curves of pCO₂-increase (solid line) and pCO₂ at 5 min (dotted line) for diagnosis of vascular access recirculation using Glucose Infusion Test (> 0.3%) as reference. Reproduced with permission from Marano et al[32]. AUC: Area under curve; pCO₂: Pressure of carbon dioxide.