Dysphagia

, Volume 15, Issue 2, pp 89–94

Respiratory and Acoustic Signals Associated with Bolus Passage during Swallowing

  • Adrienne L.  Perlman
  • Sandra L.  Ettema
  • Joseph  Barkmeier
Article

DOI: 10.1007/s004550010006

Cite this article as:
Perlman, A., Ettema, S. & Barkmeier, J. Dysphagia (2000) 15: 89. doi:10.1007/s004550010006

Abstract

In order to advance our understanding of the relation between respiration and deglutition, simultaneous videofluoroscopy and respirodeglutometry was performed. Fifteen normal, healthy, young adults (20–29 years of age) were connected to a respirodeglutometer and positioned for simultaneous videofluoroscopic assessment in the lateral plane. Subjects performed three swallows each of a 5-ml and a 10-ml bolus of liquid barium and a 5-ml bolus of paste barium, for a total of nine swallows per subject. Location of the bolus head as identified with videofluoroscopy was associated with eight respirodeglutometric variables. In addition, temporal relations for seven respirodeglutometric variables were calculated as a function of bolus volume and viscosity. Significant temporal differences were found for five of the variables by volume. No significant temporal differences were noted by viscosity. Expiration occurred before 79% and after 96% of the swallows. The number of inspirations preceding a swallow suggested a possible effect resulting from the need to hold a bolus in the mouth before receiving instructions to swallow during videofluoroscopic assessment. This effect may be important during patient evaluation. For a significant number of swallows, respiratory flow ceased before the velum was fully elevated.

Key words: Respiration — Acoustics respirodeglutometer — Timing — Videofluorography — Deglutition — Deglutition disorders.

Copyright information

© Springer-Verlag New York Inc. 2000

Authors and Affiliations

  • Adrienne L.  Perlman
    • 1
  • Sandra L.  Ettema
    • 1
  • Joseph  Barkmeier
    • 2
  1. 1.Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign, IllinoisUS
  2. 2.Department of Radiology, Carle Clinic Association, Urbana, Illinois, USAUS