delta vi/delta pco2 increased ( 0.94 +/- 0.18 to 1.29 +/- 0.24 l . min-1 . torr-1 ) at 70 % bbf if arterial co2 tension were used to represent the co2 stimulus but was unchanged if venous co2 tension were used .
C0006104
bbf
C0233494
tension