Increased viscosity of milk during infant feeding improves swallow safety through modifying sucking in an animal model.

Title

Increased viscosity of milk during infant feeding improves swallow safety through modifying sucking in an animal model.

Creator

Mayerl CJ; Edmonds CE; Gould FDH; German RZ

Publisher

Journal Of Texture Studies

Date

2021
2021-03-30

Description

Infants experiencing frequent aspiration, the entry of milk into the airway, are often prescribed thickened fluids to improve swallow safety. However, research on the outcomes of thickened milk on infant feeding have been limited to documenting rates of aspiration and the rheologic properties of milk following thickening. As a result, we have little insight into the physiologic and behavioral mechanisms driving differences in performance during feeding on high viscosity milk. Understanding the physiologic and behavioral mechanisms driving variation in performance at different viscosities is especially critical, because the structures involved in feeding respond differently to sensory stimulation. We used infant pigs, a validated animal model for infant feeding, to test how the tongue, soft palate, and hyoid respond to changes in viscosity during sucking and swallowing, in addition to measuring swallow safety and bolus size. We found that the tongue exhibited substantive changes in its movements associated with thickened fluids during sucking and swallowing, but that pharyngeal transit time as well as hyoid and soft palate movements during swallowing were unaffected. This work demonstrates the integrated nature of infant feeding and that behaviors associated with sucking are more sensitive to sensorimotor feedback associated with changes in milk viscosity than those associated with the pharyngeal swallow, likely due to its reflexive nature.

Subject

physiology; dysphagia; infant; animal model; suckling; viscosity

Identifier

Rights

Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).

Format

journalArticle

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ISSN

1745-4603 0022-4901

NEOMED College

NEOMED College of Medicine

NEOMED Department

Department of Anatomy & Neurobiology
NEOMED Postdoc Publications

Update Year & Number

April 2021 List

Citation

Mayerl CJ; Edmonds CE; Gould FDH; German RZ, “Increased viscosity of milk during infant feeding improves swallow safety through modifying sucking in an animal model.,” NEOMED Bibliography Database, accessed May 22, 2022, https://neomed.omeka.net/items/show/11623.

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