Volumes of Discrete Sips From Straws of Varying Internal Diameters Purpose In this study, the authors examined mean volumes of discrete sips performed by healthy adults from straws varying in internal diameter. Method Forty healthy adults sipped water from each of 7 straws varying in internal diameter (0.65–5.00 mm). Bolus volumes associated with 3 discrete sips were recorded ... Research Note
Research Note  |   February 01, 2014
Volumes of Discrete Sips From Straws of Varying Internal Diameters
 
Author Affiliations & Notes
  • Heather M. Clark
    Mayo Clinic, Rochester, MN
  • Caroline C. Anderson
    Ty Cobb Healthcare System, Royston, GA
  • Fletcher Hietpas
    EBS Healthcare, Jamaica Plain, MA
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication.×
  • Correspondence to Heather M. Clark: clark.heather1@mayo.edu
  • Editor: Carol Scheffner Hammer
    Editor: Carol Scheffner Hammer×
  • Associate Editor: Jane Mertz Garcia
    Associate Editor: Jane Mertz Garcia×
Article Information
Swallowing, Dysphagia & Feeding Disorders / Research Note
Research Note   |   February 01, 2014
Volumes of Discrete Sips From Straws of Varying Internal Diameters
American Journal of Speech-Language Pathology, February 2014, Vol. 23, 84-89. doi:10.1044/1058-0360(2013/13-0032)
History: Received March 22, 2013 , Revised June 3, 2013 , Accepted July 28, 2013
 
American Journal of Speech-Language Pathology, February 2014, Vol. 23, 84-89. doi:10.1044/1058-0360(2013/13-0032)
History: Received March 22, 2013; Revised June 3, 2013; Accepted July 28, 2013
Web of Science® Times Cited: 1

Purpose In this study, the authors examined mean volumes of discrete sips performed by healthy adults from straws varying in internal diameter.

Method Forty healthy adults sipped water from each of 7 straws varying in internal diameter (0.65–5.00 mm). Bolus volumes associated with 3 discrete sips were recorded under each sip condition.

Results Straw diameter had a significant effect on bolus size, with the smallest diameter straws eliciting the smallest bolus volumes. Bolus volumes did not vary according to age or sex. Considerable intersubject variation was observed, particularly for the straws with the largest diameters. Intrasubject variability across 3 trials was minimal.

Conclusions The findings support the hypothesis that narrower straw diameters are associated with smaller bolus volumes in healthy adults. Additional study is needed to determine whether individuals with dysphagia demonstrate similar patterns of bolus size associated with straws varying in internal diameter and whether such variations have clinical benefit.

Acknowledgment
This work was supported by the Appalachian State University Research Council and the Cratis D. Williams Graduate School and was completed at Appalachian State University, Boone, NC. Speech and NeuroRehab donated the therapeutic straws.
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