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要旨:目的は健常者と要介護高齢者の嚥下時間間隔を調べることである.本研究では,先行研究により開発した無意識・無拘束の嚥下回数自動検出システムを用いた.介護老人保健施設入所者等91名に頸部装着の咽喉マイクロフォンで嚥下音を検知し嚥下時間間隔を計測した.年齢と嚥下時間間隔の関係について,健常者群,部分介護者群,全介護者群で調べた結果,健常者群と全介護者群では相関が認められなかったものの,部分介護者群で相関係数0.50(p<0.05)の関係を示した.次に3群間で嚥下時間間隔を比較した結果,健常者群に比べ要介護高齢者群の嚥下時間間隔が延長し,要介護度の高い被験者ほど嚥下時間間隔が延長することが示唆された.
The purpose of this study was to compare swallowing frequency between healthy individuals and the elderly requiring care. We measured swallowing frequency using a non-restrictive, unconscious method based on previous research. Swallowing frequency was detected by monitoring swallowing sounds in 91 subjects, mainly comprised of elderly individuals in nursing institutions, using a throat microphone attached to the neck. Swallowing frequency was lower in elderly individuals requiring care than in healthy individuals. Moreover, the higher the care requirement of the individual, the longer the interval between swallows. We also examined the efficiency of this monitoring system and possible clinical applications.
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