Aerodynamic Characteristics of Tracheostomy Speaking Valves Pressure-flow characteristics were determined for four different one-way valves used for speech production in the patient who has had a tracheotomy. Each valve was tested at steady-state flow rates of 150, 250, 350, and 450 ml/sec in isolation and attached to a tracheostomy tube. Results indicated significant differences in resistance ... Research Note
Research Note  |   June 01, 1993
Aerodynamic Characteristics of Tracheostomy Speaking Valves
 
Author Affiliations & Notes
  • Lisa Fornataro-Clerici
    The Medical Center Beaver, PA
  • David J. Zajac
    University of Pittsburgh Pittsburgh, PA
  • Contact author: Lisa Fornataro-Clerici; The Medical Center, 1000 Dutch Ridge Road, Beaver, PA 15009.
Article Information
Swallowing, Dysphagia & Feeding Disorders / Speech / Research Note
Research Note   |   June 01, 1993
Aerodynamic Characteristics of Tracheostomy Speaking Valves
Journal of Speech, Language, and Hearing Research, June 1993, Vol. 36, 529-532. doi:10.1044/jshr.3603.529
History: Received June 17, 1992 , Accepted January 19, 1993
 
Journal of Speech, Language, and Hearing Research, June 1993, Vol. 36, 529-532. doi:10.1044/jshr.3603.529
History: Received June 17, 1992; Accepted January 19, 1993

Pressure-flow characteristics were determined for four different one-way valves used for speech production in the patient who has had a tracheotomy. Each valve was tested at steady-state flow rates of 150, 250, 350, and 450 ml/sec in isolation and attached to a tracheostomy tube. Results indicated significant differences in resistance among the valves. The resistance of one valve was substantially greater than that of the normal upper airways. It is suggested that future research determine the clinical significance, if any, of these differences relative to speech and respiratory behaviors in tracheostomized patients.

Acknowledgments
We would like to thank the valve manufacturers for their assistance in providing us with valves for testing purposes. We need to note, however, that neither author is affiliated with any of the valve manufacturers. We would also like to thank Cam Yates for his technical advice relative to the testing procedures. Portions of this research were presented at the Annual Convention of the American Speech-Language-Hearing Association, November 1991, Atlanta.
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