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Jung Geun Park1*, Eun Kyu Ji1, Hae Hyun Wang1, Sung June Jung1, Joon Sung Kim1, Bo Young Hong1, Kyoung Bo Lee1, Seong Hoon Lim1† |
Purpose: Dysphagia is an important causative factor of aspiration pneumonia for elderly, especially in patients with dementia. However, the relation of cognitive function for swallowing function was not well uncovered. Thus, we investigated the effect of cognition on swallowing function in patients with dementia.
Methods: Twenty subjects with dementia were recruited. The swallowing function of all subjects were evaluated by videofluoroscopic swallowing study (VFSS) with dysphagia outcome and severity scale (DOSS), modified of Mann assessment of swallowing ability (mMASA), muscle activity with surface EMG on suprahyoid and infrahyoid muscles, the strength of lip and tongue with the Iowa Oral Performance Instrument® (IOPI) system. The cognitive function was evaluated by mini–mental state examination (MMSE), Montreal cognitive assessment (MoCA), global deterioration scale (GDS), and clinical dementia rating (CDR). Logistic regression test were performed among swallowing function and cognition.
Results: The values of mMASA were correlated with the score of MMSE, MoCA, GDS and CDR (all P<0.05). The values of DOSS were correlated with the score of GDS and CDR (P<0.05). The values for muscle activity of suprahyoid and infrahyoid muscles, the strength of lip and tongue with IOPI did not correlate with the score of MMSE, MoCA, GDS and CDR.
Conclusion: The assessment with mMASA for dysphagia may be reflected with the cognitive function and swallowing function rather than DOSS of VFSS. Other parameters for muscle strength did not correlated with level of cognition in patients with dementia. These results may be useful for planning rehabilitation strategies for dysphagia in patients with dementia.
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