Computational analysis of swallowing mechanics underlying impaired epiglottic inversion.

Objectives/hypothesis: Determine swallowing mechanics associated with the first and second epiglottic movements, that is, movement to horizontal and full inversion, respectively, to provide a clinical interpretation of impaired epiglottic function.

Study Design: Retrospective cohort study.

Methods: A heterogeneous cohort of patients with swallowing difficulties was identified (n = 92).

Coordinate mapping of hyolaryngeal mechanics in swallowing.

Characterizing hyolaryngeal movement is important to dysphagia research. Prior methods require multiple measurements to obtain one kinematic measurement whereas coordinate mapping of hyolaryngeal mechanics using Modified Barium Swallow (MBS) uses one set of coordinates to calculate multiple variables of interest. For demonstration purposes, ten kinematic measurements were generated from one set of coordinates to determine differences in swallowing two different bolus types.