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  • Title: [An assessment of dysphagia using videofluorography in Parkinson's disease and progressive supranuclear palsy].
    Author: Ichihara N, Ichihara SI, Fujii S, Touge T, Nishioka M.
    Journal: Rinsho Shinkeigaku; 2000 Nov; 40(11):1076-82. PubMed ID: 11332186.
    Abstract:
    We assessed the oropharyngeal swallowing ability in 8 patients with Parkinson's disease (PD), 8 patients with progressive supranuclear palsy (PSP), and 10 age-matched healthy controls (CTL) using videofluorography (VF). In VF studies, PD and PSP patients demonstrated food pooling on the tongue, difficulty in bolus formation, and bolus falling into pharynx before swallow. PSP patients had a significantly longer delay in the pharyngeal phase and showed food falling into larynx more often than PD patients (p < 0.05). On measurement of swallowing time periods as proposed by Robbins et al., both patient groups showed significantly longer periods during many swallowing phases (P < 0.05) compared to those in the control group, but there were no significant differences between the PD and PSP groups. However, in PSP patients, the time for "transferring the food bolus from the oral cavity to pharynx" which we defined as a distinct stage was significantly longer (p < 0.05) than that in the PD group. We think that the difference in dysphagia characteristics between the two diseases arises from the variations in pathological changes in PSP, including those in the cerebral cortex, cerebellum, pons and medulla tegmentum in addition to the basal ganglia. Dystonia in the neck muscle also plays a role in dysphagia in PSP patients. Levodopa medication, changing the form of foods and training in rehabilitation techniques such as the chin down posture, supraglottic swallowing and ice-massage of the oral region are probably effective for dysphagia in PD patients. In patients with PSP, there are few research reports about the treatment of dysphagia. However, several dysphagia treatments seem to be useful depending on the abnormal patterns in the VF. Further studies are necessary to establish more effective treatments for dysphagia in PD and PSP.
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