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Hypoxia may refer to:

Reduced or insufficient oxygen[edit]

  • Hypoxia (environmental), reduced oxygen content of air or a body of water detrimental to aerobic organisms
  • Hypoxia (medical), a pathological condition in which the body or a region of the body is deprived of an adequate oxygen supply
    • Autoerotic hypoxia or erotic asphyxiation, intentional restriction of oxygen to the brain for sexual arousal
    • Cerebral hypoxia or cerebral anoxia, a reduced supply of oxygen to the brain
    • Diffusion hypoxia or Fink effect, a factor that influences the partial pressure of oxygen within the pulmonary alveolus
    • Histotoxic hypoxia, the inability of cells to take up or use oxygen from the bloodstream
    • Hypoxemic hypoxia or hypoxemia, a deficiency of oxygen in arterial blood
    • Hypoxic hypoxia, a result of insufficient oxygen available to the lungs
    • Intrauterine hypoxia, when a fetus is deprived of an adequate supply of oxygen
    • Latent hypoxia or deep water blackout, loss of consciousness on ascending from a deep freedive
    • Pseudohypoxia, increased cytosolic ratio of free NADH to NAD+ in cells
    • Tumor hypoxia, the situation where tumor cells have been deprived of oxygen
  • Hypoxia in fish, responses of fish to hypoxia