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Table 1 Dysphagia Severity Rating Scale (adapted by Gates et al.[23])

From: Improvement of dysphagia in a child affected by Pompe disease treated with enzyme replacement therapy

0 Normal swallowing  
1 Minimal dysphagia VFFS shows a slight deviation from a normal swallow; impairment limited to oral stage
2 Mild dysphagia swallowing suggestion Presence of oro-pharyngeal dysphagia; can be treated by means of specific swallowing suggestion
3 Mild to moderate dysphagia Presence of oro-pharyngeal dysphagia potential for aspiration exists but can be diminished by specific swallowing techniques
4 Moderate dysphagia Presence of oro-pharyngeal dysphagia; potential for aspiration exists: trace aspiration can be seen at VFSS
5 Severe dysphagia Presence of aspiration; nothing by mouth is recommended