End tidal-to-arterial CO2 and O2 gas gradients at low- and high-altitude during dynamic end-tidal forcing.

@article{Tymko2015EndTC,
  title={End tidal-to-arterial CO2 and O2 gas gradients at low- and high-altitude during dynamic end-tidal forcing.},
  author={Michael M Tymko and Philip N. Ainslie and David B MacLeod and Chris K. Willie and Glen E Foster},
  journal={American journal of physiology. Regulatory, integrative and comparative physiology},
  year={2015},
  volume={308 11},
  pages={R895-906}
}
We sought to characterize and quantify the performance of a portable dynamic end-tidal forcing (DEF) system in controlling the partial pressure of arterial CO2 (Pa(CO2)) and O2 (Pa(O2)) at low (LA; 344 m) and high altitude (HA; 5,050 m) during an isooxic CO2 test and an isocapnic O2 test, which is commonly used to measure ventilatory and vascular reactivity in humans (n = 9). The isooxic CO2 tests involved step changes in the partial pressure of end-tidal CO2 (PET(CO2)) of -10, -5, 0, +5, and… CONTINUE READING
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