Breath-by-breath variation of FRC: effect on VO2 and VCO2 measured at the mouth.

@article{Wessel1979BreathbybreathVO,
  title={Breath-by-breath variation of FRC: effect on VO2 and VCO2 measured at the mouth.},
  author={Hans Wessel and Robert L Stout and C K Bastanier and Milton H. Paul},
  journal={Journal of applied physiology: respiratory, environmental and exercise physiology},
  year={1979},
  volume={46 6},
  pages={1122-6}
}
We examined breath-by-breath (B-B) variations of FRC (delta FRC) and their effect on measured O2 and CO2 gas exchange in 52 2- to 4-min segments of continuous air breathing obtained in 29 patients (age range 6--50 yr). Respiratory frequency ranged from 13 to 43 breaths/min, VE from 6.7 to 22.5 l/min (BTPS), and expired VT from 234 to 1,370 ml (BTPS). Computer analysis was based on the following source data measured at the mouth: inspired (VI) and expired (VE) gas flow, FN2, FO2 and FCO2. The… CONTINUE READING