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Influence of Bolus Volume on Hyoid Movements in Normal Individuals and Patients with Parkinson's Disease

Published online by Cambridge University Press:  18 September 2015

Axel R. Wintzen ,
Umesh A. Badrising ,
Raymund A.C. Roos ,
Jan Vielvoye  and
Lishya Liauw
Axel R. Wintzen*
Affiliation:
Department of Neurology, University of Leiden, The Netherlands
Umesh A. Badrising
Affiliation:
Department of Neurology, University of Leiden, The Netherlands
Raymund A.C. Roos
Affiliation:
Department of Neurology, University of Leiden, The Netherlands
Jan Vielvoye
Affiliation:
Department of Neuroradiology, University of Leiden, The Netherlands
Lishya Liauw
Affiliation:
Department of Neuroradiology, University of Leiden, The Netherlands
*
gebouw 20 AZL, Postbus 9600, 2300 RC Leiden, The Netherlands
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Abstract:

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The swallowing movements of 22 ambulant patients with Parkinson's disease were examined by videofluoroscopy, 15 spouses serving as controls. The relation between bolus volume and movement of the hyoid bone was studied in the lateral view to assess the adaptation of the pharynx musculature. Although movement characteristics of the hyoid varied considerably both intra- and interindividually, mean values followed typical patterns. In controls, the position of the hyoid before the start of the swallow tended to be lower as the bolus volume increased, apparently to create space in the oral cavity by lowering the floor of the mouth. This trend was not seen in the group of Parkinson patients. We suppose that this specific lack of adaptation represents hypokinesia. The amplitude of the hyoid movement did not change with increasing bolus volumes, either in patients or in controls. Moreover, Parkinson patients had many more aborted swallowing movements (“hesitations”) than controls, probably representing defective switching from the voluntary phase of swallowing to the involuntary, automatic phase.

Type
Articles
Information
Canadian Journal of Neurological Sciences , Volume 21 , Issue 1 , February 1994 , pp. 57 - 59
Copyright
Copyright © Canadian Neurological Sciences Federation 1994

References

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