Structural displacements in normal swallowing:: A videofluoroscopic study
Structural displacements in normal swallowing:: A videofluoroscopic study
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DOI:
10.1007/s004550010017
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发表时间:
2000-06-01
期刊:
影响因子:
2.6
通讯作者:
Walker, A
中科院分区:
文献类型:
--
作者:
Leonard, RJ;Kendall, KA;Walker, A
Dynamic videofluoroscopic swallow studies were performed on 60 normal adult volunteers to establish normative data for displacement of upper aerodigestive tract structures during deglutition. Variables evaluated included hyoid bone displacement, larynx-to-hyoid bone approximation, pharyngeal constriction, and the extent of pharyngoesophageal sphincter (PES) opening during liquid swallows of 1, 3, and 20 cc. Results showed direct relationships between bolus size and hyoid displacement, between bolus size and PES opening, and between bolus size and pharyngeal constriction. Only hyoid-to-larynx approximation remained unchanged across bolus sizes. Sex differences were noted for all variables except PES opening. Reliability for most measurement variables was excellent. To our knowledge, normative data for pharyngeal constriction and larynx-to-hyoid approximation have not previously been described.