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The therapeutic value of inhaling pure oxygen for long periods of time has not been investigated. Considerable research has been done on therapy with 40-60 per cent oxygen, but the range of 60-100 per cent has been avoided because of the fear of producing harmful results. Medicinal and commercial oxygen is about 99.5 per cent pure. This is what is meant when the terms "pure" or "100 per cent oxygen" are used. Evans endeavours to establish that pure oxygen can be safely administered by means of the face mask or nasal inhaler in cyanotic patients continually, as long as the
The Inhalation of Pure Oxygen in the Treatment of Disease.. Ann Intern Med. 1930;3:1166. doi: https://doi.org/10.7326/0003-4819-3-11-1166
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Published: Ann Intern Med. 1930;3(11):1166.
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