Acoustic Characteristics Associated with Liquid Swallowing Sounds of Different Bolus Consistencies in Young Healthy Adults

Autor/inn/en	Ng, Manwa L.; Ki, Anthony
Titel	Acoustic Characteristics Associated with Liquid Swallowing Sounds of Different Bolus Consistencies in Young Healthy Adults
Quelle	In: International Journal of Language & Communication Disorders, 57 (2022) 3, S.552-564 (13 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Ng, Manwa L.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1368-2822
DOI	10.1111/1460-6984.12706
Schlagwörter	Acoustics; Motor Reactions; Young Adults; Gender Differences; Evaluation Methods + Suchen Sie Ihr Suchwort? Akustik; Young adult; Junger Erwachsener; Geschlechterkonflikt
Abstract	Background: Cervical auscultation has been used clinically as an augmentative procedure for swallow examination. Despite its frequent use for screening and preliminary assessment of swallowing, the usefulness of cervical auscultation is controversial due to a lack of sufficient research, particularly in quantifying swallowing sounds. Aims: To document the acoustic characteristics of normal swallowing sound associated with swallowing bolus of different consistencies among younger healthy adults. Methods & Procedures: A total of 30 healthy young adult participants swallowed 5 ml thickened liquids of four different consistencies (slightly thick, mildly thick, moderately thick and extremely thick) prepared using a starch-based commercial thickener, and the corresponding swallowing sounds were recorded using a wireless accelerometric stethoscope. An array of acoustic measures including duration of swallowing sound (DSS), duration to peak intensity (DPI), frequency at peak intensity (FPI), peak intensity (PI), average intensity (AI), and difference between peak and average intensity (DPAI) values associated with the swallowing signals were obtained. Outcomes & Results: In general, increased durational measures of the swallowing sounds were associated with an increase in bolus consistency. Intensity measures including PI, AI and DPAI were found to be stable across different consistencies. The change in FPI did not appear to be particularly meaningful due to its high variability. In addition, no significant differences were observed between men and women. Conclusions & Implications: Swallow sounds associated with different bolus consistencies could be quantified and used to differentiate consistencies. The present findings could serve as a reference for future swallowing research of normal and dysphagic population. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01