Bolus Location Associated With Videofluoroscopic and Respirodeglutometric Events The purpose of the present investigation was to determine the relation between specific events observed with simultaneous videofluoroscopy and respirodeglutometry. The order of occurrence was determined for each of 31 events (18 videofluoroscopic, 13 respirodeglutometric). Using 1 video frame (33.3 ms) as the maximum distance allowed between the average times ... Research Article
Research Article  |   February 01, 2005
Bolus Location Associated With Videofluoroscopic and Respirodeglutometric Events
 
Author Affiliations & Notes
  • Adrienne L. Perlman
    University of Illinois at Urbana-Champaign
  • Xuming He
    University of Illinois at Urbana-Champaign
  • Joseph Barkmeier
    Carle Clinic, Urbana, IL
  • Eva Van Leer
    St. Joseph's Hospital, Atlanta, GA
  • Contact author: Adrienne L. Perlman, PhD, Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, 901 South Sixth Street, Champaign, IL 61820.
    Contact author: Adrienne L. Perlman, PhD, Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, 901 South Sixth Street, Champaign, IL 61820.×
  • Corresponding author: E-mail: aperlman@uiuc.edu
Article Information
Swallowing, Dysphagia & Feeding Disorders / Speech / Research Articles
Research Article   |   February 01, 2005
Bolus Location Associated With Videofluoroscopic and Respirodeglutometric Events
Journal of Speech, Language, and Hearing Research, February 2005, Vol. 48, 21-33. doi:10.1044/1092-4388(2005/003)
History: Received August 20, 2003 , Revised February 5, 2004 , Accepted June 1, 2004
 
Journal of Speech, Language, and Hearing Research, February 2005, Vol. 48, 21-33. doi:10.1044/1092-4388(2005/003)
History: Received August 20, 2003; Revised February 5, 2004; Accepted June 1, 2004
Web of Science® Times Cited: 24

The purpose of the present investigation was to determine the relation between specific events observed with simultaneous videofluoroscopy and respirodeglutometry. The order of occurrence was determined for each of 31 events (18 videofluoroscopic, 13 respirodeglutometric). Using 1 video frame (33.3 ms) as the maximum distance allowed between the average times of 2 events in the same cluster, 8 potential clusters were identified, 3 of which were statistically confirmed based on 90% confidence intervals on the mean time distances between events. Confirmed clusters included the time of (a) complete velar descent and the onset of the small noninspiratory flow (SNIF), (b) full separation of the base of the tongue from the pharyngeal wall and SNIF nadir, complete upper esophageal sphincter closure, and SNIF nadir, and (c) onset of epiglottic return and apnea offset. The onset of respiratory flow occurred within 13 ms after the onset of epiglottic return. Additionally, the percentage of swallows during which the bolus head or tail was located at each of 6 locations was determined for 20 of these events (10 videofluoroscopic, 10 respirodeglutometric). The 6 locations of interest included the oral cavity, base of tongue, valleculae, pyriform sinuses, upper esophageal sphincter, and the esophagus. Lastly, of the 72 swallows performed by these healthy, young adults, 65 (90.3%) were preceded by expiration, and all (100%) were followed by expiration.

Acknowledgments
This work was supported by Grant PHS 1 R01 DC3378 from the National Institute on Deafness and Other Communication Disorders (NIDCD). The authors would like to thank Rachel Caldwell, Elizabeth Shearin, and Ying Wei for their assistance in data collection and/or analysis. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the NIDCD.
Order a Subscription
Pay Per View
Entire Journal of Speech, Language, and Hearing Research content & archive
24-hour access
This Article
24-hour access