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Aetiology of hypoxaemia

Authoring team

Possible causes of hypoxaemia include:

  • cardio-respiratory disorders
    • hypoventilation
    • a mismatch of ventilation-perfusion
    • venous to arterial shunt
    • diffusion impairment

  • low inspired O2 e.g. high altitude

  • a pathological desaturation of venous blood e.g. may rarely be caused by carboxyhaemoglobin

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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