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KMID : 1022420140060030003
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Phonetics and Speech Sciences
2014 Volume.6 No. 3 p.3 ~ p.12
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Dysphagia Handicap Index and Swallowing Characteristics based on Laryngeal Functions in Korean Elderly
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Kim Geun-Hee
Choi Seong-Hee
Lee Kyung-Jae
Choi Chul-Hee
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Abstract
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Larynx plays an important role in phonation and protection of the respiratory tract during swallowing. The reducedanatomical and physiological function in elevation of larynx and glottis closure can cause problems in voice and swallowing. The present study investigated the Korean version of handicap index of dysphagia in elderly Koreans. Therefore, 60 normalelderly Koreans ranged from 65 to 95 and 20 normal Korean young adults aged from 20 to 25 were participated in thisstudy to compare total (T), physical (P), functional (F), and emotional (E) index scores between two groups as well as amongsub groups (60s, 70s, 80s) in elderly. For swallowing, total and sub dysphagia handicap index (DHI) scores, voice qualityduring /a/phonation following swallowing (saliva and water), intensity of coughing, and L-DDK were measured. The results showed that functional (P), physical (P), emotional (E) scores as well as total (T) score were significantlydifferent between young adults and old adults in DHI(p<.05). Additionally, there was a negative correlation between totalDHI score and intensity of coughing (r=-.51) as well as L-DDK (r=-.70). These findings suggest that a slow rate in vocalfold adduction and reduced intensity of coughing in the elderly affect swallowing function. Thus, recently translated Koreanversion of DHI may be useful as supplement in evaluating the swallowing problems in elderly people.
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KEYWORD
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Dysphagia handicap index (DHI), coughing, laryngeal diadochokinesis (L-DDK), elderly
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