The dynamic response of the cardiopulmonary parameters to passive head-up tilt.

@article{Miyamoto1982TheDR,
  title={The dynamic response of the cardiopulmonary parameters to passive head-up tilt.},
  author={Yoshimi Miyamoto and Toshiyo Tamura and Tsuyoshi Hiura and Toshikazu Nakamura and Junko Higuchi and Taisei Mikami},
  journal={The Japanese journal of physiology},
  year={1982},
  volume={32 2},
  pages={245-58}
}
Transitional changes in stroke volume, heart rate, and cardiac output resulting from head-up tilt were measured in healthy male subjects, using impedance cardiography. Respiratory frequency, tidal volume, ventilation rate, end-tidal O2 and Co2 tensions, O2 uptake, CO2 output, and exchange ratio were also determined breath-by-breath. When the subject was tilted upward from a supine to an upright position, the stroke volume was decreased while the heart rate was increased. The time required to… CONTINUE READING

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