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A Clinical Method for the Detection and Quantification of Quick Respiratory Hyperkinesia

Contact author: Thomas J. Hixon, Department of Speech, Language, and Hearing Sciences, Institute for Neurogenic Communication Disorders, University of Arizona, P.O. Box 210071, Tucson, AZ 85721. Email: hixon{at}u.arizona.edu

PURPOSE: Quick respiratory hyperkinesia can be difficult to detect with the naked eye. A clinical method is described for the detection and quantification of quick respiratory hyperkinesia.

METHOD: Flow at the airway opening is sensed during spontaneous apnea (rest), voluntary breath holding (postural fixation), and voluntary volume displacement (intentional movement). The method is designed to reveal quick respiratory hyperkinesia independent of the function of the larynx and/or upper airway. Theory underlying the method is discussed, and a protocol is offered for clinical use.

CONCLUSIONS: This method may be useful to neurologists, pulmonologists, and speech-language pathologists. Because it depends on nonspeech observations, its application to speech and/or voice production must be inferred.

Key Words: tics, chorea, myoclonus, tremor, neuromotor speech and/or voice disorders