A Simple Technique for Determining Velopharyngeal Status during Speech Production
13 April 2011 (online)
Clinical evaluation of velopharyngeal function relies heavily on auditory perceptual judgments that can be supported by instrumental examination of the velopharyngeal valve. Many of the current instrumental techniques are difficult to interpret, expensive, and/or unavailable to clinicians. Proposed in this report is a minimally invasive and inexpensive approach to evaluating velopharyngeal function that has been used successfully in our laboratory for several potentially difficult-to-test clients. The technique is an aeromechanical approach that involves the sensing of nasal ram pressure (N-RamP), a local pressure sensed at the anterior nares, using a two-pronged nasal cannula. By monitoring the N-RamP signal, it is possible to determine the status of the velopharyngeal port (open or closed) during speech production. Four case examples are presented to support its clinical value.
Velopharynx - evaluation
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1 The rainbow passage has been shown to contain a mixture of oral and nasal consonants equivalent to that found in conversational speech, and normative data are available.
2 The Rainbow passage has been shown to contain a mixture of oral and nasal consonants equivalent to that found in conversational speech and normative data are available.
Kate Bunton, Ph.D.
1131 E. 2nd Street, P.O. Box 210071
Tucson, AZ 85721-0071