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one-way speaking valve |
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one-way speaking valve, a valve, placed on the end of a tracheostomy tube, that opens during inhalation and closes during exhalation, so that the exhaled air is directed through the vocal cords and out the mouth and nose, allowing a person who has had a tracheostomy to speak. See also Passy-Muir valve. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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