Quantitative analysis of hyoid/laryngeal movement velocity while swallowing: Effect of peak velocity on the severity of swallowing disorders Yuta Nakao 1 , Tatsuyuki Fukuoka 2 , Osamu Shiromoto 3 , Norihiko Kodama 4 , Kazuhisa Domen 5 1Department of Physical Medicine and Rehabilitation, Hyogo College of Medicine Hospital 2Department of Rehabilitation, Hiroshima International University 3Program in Health and Welfare, Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima 4Department of Rehabilitation Medicine, Hyogo College of Medicine 5Department of Physical Medicine and Rehabilitation, Hyogo College of Medicine Keyword: 嚥下造影検査 , 舌骨ピーク速度 , 喉頭ピーク速度 , 嚥下障害重症度 , VFSS , hyoid peak velocity , laryngeal peak velocity , swallowing disability pp.11-18
Published Date 2018/3/15
DOI https://doi.org/10.11477/mf.6001200158
  • Abstract
  • Look Inside
  • Reference

 The aim of this study was to evaluate the effect of hyoid/laryngeal peak velocity on patients with swallowing disorders. Videofluoroscopic study of swallowing (VFSS) was used to classify 28 patients with dysphagia into three groups:(1) without penetration (n=11), (2) with penetration・without aspiration (n=11) and (3) with aspiration (n=6) based on the penetration-aspiration scale (PA scale). Hyoid/laryngeal peak velocities were analyzed while swallowing 5 ml thin-liquid boluses using ImageJ software. We also evaluated hyoid/laryngeal mean velocity, duration of hyoid/laryngeal elevation, maximum hyoid/laryngeal distance, and the anterior and superior hyoid/laryngeal distance. The increase in laryngeal peak velocity significantly correlated with a decrease in the PA scale (r=−0.55, p=0.002). However, hyoid peak velocity had no significant correlation with PA scale (r=−0.35, p=0.068). This indicates that hyoid/laryngeal peak velocity might be an important factor associated with the severity of dysphagia.

Copyright © 2018, Japanese Association of Speech-Language-Hearing Therapists. All rights reserved.


電子版ISSN 印刷版ISSN 1349-5828 日本言語聴覚士協会