Fig. 2

Time course of absolute ΔPCO2 to ΔCCO2 differences. |ΔPCO2| denotes the absolute arithmetic value of venous-to-arterial carbon dioxide partial pressures. |ΔCCO2| denotes the absolute arithmetic value of venous-to-arterial carbon dioxide contents. |ΔPCO2 – ΔPCO2| denotes the difference of absolute values of ΔPCO2 and ΔPCO2 (i.e., the absolute arithmetic distance between values)