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Blom speech cannula. Blom speech cannula. Inspiratory pressure opens the flap valve and closes (expands) the bubble valve, sealing the fenestration so.

Published byIrén Kerekesné Modified over 4 years ago

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Presentation on theme: "Blom speech cannula. Blom speech cannula. Inspiratory pressure opens the flap valve and closes (expands) the bubble valve, sealing the fenestration so."— Presentation transcript:

1 Blom speech cannula. Blom speech cannula. Inspiratory pressure opens the flap valve and closes (expands) the bubble valve, sealing the fenestration so that all of the tidal volume goes to the lungs. As inspiration ends, the flap valve closes. Expiratory pressure collapses the bubble valve, which unblocks the fenestration and directs all of the exhaled air to the upper airway to allow phonation. From Reference 45. Dean R Hess, and Neila P Altobelli Respir Care 2014;59: (c) 2012 by Daedalus Enterprises, Inc.

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