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References

Cho Lieu, J. E., Muntz, H. R., Prater, D., & Blunt Stahl, M (1999). Passy-Muir valve in children with tracheotomy. International journal of pediatric otorhinolaryngology, 50197-203. doi: 10.1016/S0165-5876(99)00245-1

Mehrhoff, J., (2017). Week 10 pulmonary functions and the medical SLP [PowerPoint slides]. Retrieved from MSUM D2L. ​

Passy-Muir. (2017). What is a Passy-Muir Valve?. Retrieved from http://www.passy-muir.com/what_is

Passy-Muir Inc. (2008). Passy-Muir tracheostomy and ventilator swallowing and speaking valves: Patient education handbook. Irvine, CA: Author.

Quick info: Tracheostomy, or Trach

  • Tracheostomy is a procedure that is done for individuals with respiratory failure, airway obstructions, paralysis, neurological conditions, or need long-term use of a ventilator, and more
  • Allows for air to pass if the normal airway is impaired or obstructed
  • Trachs can be permanent or removed after treatment

placement of trach

components

What is the PMV?

Mehrhoff, 2017

  • The PMV is a one-way speaking valve that is attached to an individual's tracheostomy (trach) tube
  • When the valve is attached, it offers many clinical benefits
  • improved speech and voice functions
  • improved smell and taste
  • improved swallow (reduced aspiration risk)
  • managed secretions

David A. Muir

Inventor of the Passy-Muir Tracheostomy & Venatilator Swallowing and Speaking Valves

Passy-Muir Valve

(PMV)

How does the PMV work?

Andi Elvert and Allie Heisler

SLHS 421-02

Applied Project

passy-muir.com

youtube.com/watch?v=9yn5ekGJ0Qw

Communication Outcomes

with PMV

PMV Design Benefits

  • Prelingual children with a trach or ventilator are able to practice typical motor speech patterns with the PMV
  • Adults can regain access to verbal communication
  • Provides a complete seal
  • Membrane prevents air leaks
  • Hands-free device
  • Guides air into the oral cavity and upper airway system
  • this provides a more natural flow of air through speech mechanisms

Connections to Speech Science

  • PMV directs airflow to provide a source for speech
  • subglottal pressure allows the vocal folds to vibrate (myoelastic aerodynamic theory of phonation)
  • Without the valve, air would flow out of the trach, not through the vocal folds and oral cavity
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