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Passy-Muir valve |
Also found in: Acronyms | 0.01 sec. |
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Passy-Muir valve,
a one-way speaking valve for use with tracheostomy tubes. Its normal position at rest is closed, so that it is open only during inhalation and closes during exhalation, allowing air to pass through the vocal folds for phonation. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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