ID 109865
Title Alternative
超音波検査を用いた嚥下音産生機序の解明
Author
Honda, Tsuyoshi Department of Oral and Maxillofacial Prosthodontics, Institute of Health Biosciences, The University of Tokushima Graduate School KAKEN Search Researchers
Baba, Takuro Department of Oral and Maxillofacial Prosthodontics, Institute of Health Biosciences, The University of Tokushima Graduate School
Fujimoto, Keiko Department of Oral and Maxillofacial Prosthodontics, Institute of Health Biosciences, The University of Tokushima Graduate School
Nagao, Kan Department of Oral and Maxillofacial Prosthodontics, Institute of Health Biosciences, The University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Takahashi, Akira Department of Oral Surgery, Institute of Health Biosciences, The University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Ichikawa, Tetsuo Department of Oral and Maxillofacial Prosthodontics, Institute of Health Biosciences, The University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Keywords
Dysphagia
Swallowing sound
Ultrasonography
Content Type
Thesis or Dissertation
Description
Background: Cervical auscultation is a technique frequently used for the screening of dysphagia. However, this method is difficult to evaluate objectively and it is unclear how sound is generated during the swallowing process. The aim of this study was to analyze the waveform of swallowing sound and clarify the sound production process using recordings of swallowing sounds and ultrasound images (USI), performed simultaneously.
Materials and Methods: Commercial natural spring water and natural carbonated water were used in experiments 1 and 2, respectively. In experiment 1, a microphone was attached to the skin of the neck of 20 young participants and swallowing sounds were recorded and analyzed. In experiment 2, swallowing processes in three participants were recorded by a medical ultrasonography apparatus. The ultrasonic probe was placed on the skin over one of the thyroid cartilages or the thyroid gland.
Results: The swallowing sound wave (SSW) was divided into three sectional periods. The mean duration of the first, second, and third SSW was 210 ± 147 ms, 458 ± 113 ms, and 91 ± 61 ms, respectively. The mean intensity ratio of the first, second, and third SSW was 7.8 ± 5.2, 29.2 ± 16.5, and 5.8 ± 5.1, respectively. When the ultrasonic probe was placed on the skin over one of the thyroid cartilages, in the phase between the production of the second SSW and the silent period, the USI revealed an accumulation of swallowed material around the valleculae and oropharynx. In the silent period of the second SSW, the swallowed material accumulated around the hypopharynx. When the ultrasonic probe was placed on the skin over the thyroid gland, in the silent period of the second SSW, the USI revealed that the swallowed material had passed through esophagus.
Conclusion: Waveform and USI findings from this study suggest that swallowing sound can be divided into three sectional periods: an oral phase, a pharyngeal phase, and a repositioning phase.
Journal Title
Journal of Oral Health and Biosciences
ISSN
21887888
NCID
AA12713630
Publisher
四国歯学会
Volume
28
Issue
1
Start Page
21
End Page
27
Sort Key
21
Published Date
2015-07-10
Remark
内容要旨・審査要旨・論文本文の公開:
内容要旨 : LID201505281001.pdf
審査要旨 : LID201505281002.pdf
論文本文 : LID201509041001.pdf
本論文は,著者Tsuyoshi Hondaの学位論文として提出され,学位審査・授与の対象となっている。
EDB ID
FullText File
language
eng
TextVersion
ETD
MEXT report number
甲第2812号
Diploma Number
甲口第394号
Granted Date
2015-03-23
Degree Name
Doctor of Dental Science
Grantor
Tokushima University
departments
University Hospital
Oral Sciences