Several reports have recently been published regarding dysphagia in very elderly patients, and centenarian dysphagia patients have become more common in Japan. The aim of this study was to assess the prognosis of dysphagia in very elderly patients. Participants were 24 centenarian dysphagia patients. For each patient, we collected information on age, care level, past medical history, and changes in oral intake according to the Functional Oral Intake Scale (FOIS). Patients were divided into two groups based on the mode of food intake at the time of transfer or discharge: the per oral-only group (the PO-only group, i.e., oral intake alone) and the tube feeding-dependent group (the TF-dependent group, i.e., combination of oral intake and tube feeding, or tube feeding alone). In both groups, the FOIS score decreased significantly from pre-hospitalization to the time of transfer or discharge (p=0.006 for both). The FOIS score at initial assessment was higher in the PO-only group with the TF-dependent group (p=0.0004). Furthermore, the frequency of a FOIS score of 4 at initial assessment was significantly higher in the PO-only group, and the frequency of a FOIS score of 1 was significantly higher in the TF-dependent group (p=0.0006). These findings collectively suggest that oral intake can be recovered if the FOIS score is ≥ 4 at initial assessment, is difficult if the score is 1, and may be possible with a FOIS score of 2.
Keywords: 100 Years old; Aging; Dysphagia; Functional Oral Intake Scale; Very elderly.
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