Leonard et al. 2014. Effects of Bolus Rheology on Aspiration in Patients with Dysphagia

The use of thickening agents to alter bolus rheology is particularly commonplace; however, the precise effects of these alterations on swallowing remain uncertain. The aim of this study was to compare the effects of a thin contrast fluid versus a contrast fluid thickened with a xanthan gum-based thickener and a starch-based thickener.