Document Detail

Development of a swallowing frequency meter using a laryngeal microphone.
MedLine Citation:
PMID:  22489845     Owner:  NLM     Status:  Publisher    
Summary  Disuse atrophy of swallowing-related organs is suspected when decreased swallowing frequency is seen in the elderly. However, swallowing frequency has not been examined in elderly people during daily life. We developed a swallowing frequency meter containing a laryngeal microphone that does not restrict the subject's ability to perform daily activities. In this study, the utility of the meter was assessed. Experiment 1: The ability of the meter to detect swallowing was examined. The subject was instructed to swallow saliva or foods at a voluntarily pace. During these procedures, swallowing events were simultaneously recorded by the meter, self-enumeration and videofluorography. As a result, all of the swallowing events identified by the meter coincided with the swallowing events identified by self-enumeration and videofluorography. Experiment 2: Swallowing sounds display various patterns both between and within individuals. Therefore, we examined the concordance rate between the number of swallowing events counted by the meter and that counted by self-enumeration in 15 subjects over a longer period than in experiment 1. The concordance rates calculated by two examiners between the meter and self-enumeration were 96·8 ± 4·5% and 98·9 ± 3·3% at rest and 95·2 ± 4·5% and 96·1 ± 4·1% during meals, respectively. Our findings indicate that this meter is useful for measuring the frequency of swallowing during daily situations.
N Tanaka; K Nohara; K Okuno; Y Kotani; H Okazaki; M Matsumura; T Sakai
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-10
Journal Detail:
Title:  Journal of oral rehabilitation     Volume:  -     ISSN:  1365-2842     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0433604     Medline TA:  J Oral Rehabil     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 Blackwell Publishing Ltd.
Division of Oral and Facial Disorders, Osaka University Dental Hospital, Osaka Division of Dentistry, Shitennoji Yawaragien Hospital Home, Osaka Medical Corporation Miwakai, Heisei Dental Clinic, Osaka Medical Corporation Shinaikai, Tesseikai Neurosurgical Hospital, Osaka Department of Biomedical Engineering, Osaka Electro-Communication University, Osaka Division of Functional Oral Neuroscience, Osaka University, Graduate School of Dentistry, Osaka, Japan.
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