Sustained Moderate Hyperoxia Augments the Acute Hypdxic Response in a Wake Goats

  • Jay K. Herman
  • Ken D O’Halloran
  • Gerald E. Bisgard
Chapter
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 499)

Abstract

Sustained exposure to low oxygen induces a time-dependent increase in pulmonary ventilation that is termed ventilatory acclimatization to hypoxia (VAH). The time it takes for this increase in ventilation to reach a stable plateau varies greatly across species but in the goat it occurs in about 4-6 h1. Previous reports in the goat have indicated that this process is not only dependent on intact carotid bodies (CB)2, but also on the progressive increase in CB output that occurs with prolonged hypoxic but not hypercapnic stimulation3,4. It is unclear, however, whether or not acclimatization occurs over an oxygen continuum or whether it is strictly a function of a hypoxic stimulus.

Keywords

Toxicity Attenuation Carbon Monoxide Cyanide Methysergide 

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Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Jay K. Herman
    • 1
  • Ken D O’Halloran
    • 2
  • Gerald E. Bisgard
    • 1
  1. 1.Department of Comparative BiosciencesUniversity of WisconsinMadisonUSA
  2. 2.Department of PhysiologyUniversity CollegeDublin, Dublin2Ireland

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