Contribution of gas exchange to slope of phase III of the single-breath nitrogen test.

@article{Cormier1981ContributionOG,
  title={Contribution of gas exchange to slope of phase III of the single-breath nitrogen test.},
  author={Yvon Cormier and Jacques B{\'e}langer},
  journal={Journal of applied physiology: respiratory, environmental and exercise physiology},
  year={1981},
  volume={50 6},
  pages={
          1156-60
        }
}
To study the influence of gas exchanges on the slope of phase III, single-breath nitrogen tests (SB-N2) and reversed tests (SB-R) were performed with 10 normal volunteers at expiratory flows of 100 ml.s-1, 500 ml.s-1,11.s-1, and 21.s-1. During the prolonged expiration required for the SB-N2 test, more O2 is consumed that CO2 eliminated. This factor could contribute to the rising slope of phase III. However, if one obtains a reversed slope of phase III (by having O2 as the residual gas and room… CONTINUE READING
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