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IPS in healthy adults (Bhutada et al., 2020)

posted on 2020-08-07, 20:54 authored by Ankita M. Bhutada, Rajarshi Dey, Bonnie Martin-Harris, Kendrea L. (Focht) Garand
Purpose: The purpose of this study was to investigate factors influencing the initiation of pharyngeal swallow (IPS) in healthy, nondysphagic adults.
Method: A total of 195 healthy participants ranging in age from 21 to 89 years participated in a modified barium swallow study. IPS was quantified using the Modified Barium Swallow Impairment Profile standardized scoring system across nine swallowing tasks observed in the lateral viewing plane for each participant.
Results: Large variability for bolus head location at time of hyoid burst (IPS) was observed within this healthy cohort, ranging from the ramus of the mandible to the pyriform sinuses. Significant effects of bolus volume, viscosity, sex, and race were also observed.
Conclusion: Study findings indicate that IPS is variable in healthy adults and influenced by volume, viscosity, sex, and race. Thus, variability in IPS may be considered typical in otherwise nondysphagic adults. The clinical significance of high Modified Barium Swallow Impairment Profile IPS scores in dysphagic patients, therefore, must be considered within the context of other swallowing impairments.

Supplemental Material S1. Summary of regression analysis for variables predicting IPS scores across swallow tasks for age category, sex and race (Caucasian; African American).

Supplemental Material S2. Odds ratios (95% confidence interval [lower bound, upper bound]) of IPS scores across swallow tasks for age category, sex and race (Caucasian; African American).

Bhutada, A. M., Dey, R., Martin-Harris, B., & Garand, K. L. (2020). Factors influencing initiation of pharyngeal swallow in healthy adults. American Journal of Speech-Language Pathology. Advance online publication.


This work was partially supported by the Veterans Affairs CDA-1 (RR&D1IK1RX001628-01A1 to Kendrea Garand), the National Institute on Deafness and Other Communication Disorders (K24DC12801 to Bonnie-Martin Harris), the South Carolina Clinical & Translational Research Institute, with an academic home at the Medical University of South Carolina, National Center for Advancing Translational Sciences (TL1 TR000061 to Kathleen Brady, Project PI: Kendrea Garand), and the American Speech- Language-Hearing Foundation to Kendrea Garand.