one-way speaking valve

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.
References in periodicals archive ?
Reductions in the amount of oropharyngeal secretions and possible improvement in swallowing ability are two of the reported secondary benefits of occluding a tracheotomy tube and using a one-way speaking valve.
Lichtman et al studied the effects of a one-way speaking valve on secretion accumulation by measuring the amount of content that was suctioned from the oral cavity and tracheotomy tube over a 24-hour period.
Some investigators (7-9) have found that occlusion and the use of a one-way speaking valve reduce or eliminate aspiration, while others (13-15) have reported no effect; still others (5,6) have reported that some patients benefit and some do not.
Tubes were occluded in one of three ways: by a cap, by a one-way speaking valve, or by a finger.
One-way speaking valves can be easily placed on the end of any tracheostomy tube.