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Elmer L. Kenyon, A.B., M.D.
JAMA. 1914;LXII(18):1398. doi:10.1001/jama.1914.25610430001015.
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The danger inherent in the commercially advertised douches is so evident as to warrant their general condemnation. The objection to them lies in the turned-back position of the head required in their use, since that position encourages entrance of infective fluids not only into the eustachian tubes but also into the sphenoidal, and to a lesser extent, into the anterior ethmoidal, frontal and antral sinuses. Not only that, but the flooding of the nasal cavity and the nasopharyngeal space by the sudden pouring in of a large amount of fluid makes the flow of some of this liquid into these sinuses almost inevitable. And even more, the influx of a large amount of fluid into the nasopharynx almost inevitably sets up a coughing and hawking and swallowing which is likely to throw the eustachian tube open just at the dangerous moment. Nasal douches requiring the tipping back of the head,


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