Acoustic and perceptual profiles of swallowing sounds in preterm neonates: normative data from a cross-sectional study cohort

Tracks
4
Dysphagia
Feeding
Infant feeding
Neonatal care
Paediatric/Infant
Research
Swallowing
Friday, June 13, 2025
10:30 AM - 10:40 AM

Overview

Assoc Professor Thuy Frakking


Details

⏫ Research insights
⏲️ 10.30am - 10.50am
⌛ 20-minutes
📚 Assumed knowledge of attendees: Intermediate (Some previous learning/working knowledge of topic e.g. treated a few cases)


Presenter

Agenda Item Image
Assoc Professor Thuy Frakking
Gold Coast University Hospital | Caboolture Hospital

Acoustic and perceptual profiles of swallowing sounds in preterm neonates: normative data from a cross-sectional study cohort

10:30 AM - 10:50 AM

Presentation summary

The use of cervical auscultation is popular among speech-language pathologists across Australia, United Kingdom and Ireland. There is normative data on swallowing sounds in adults and children; however, none exist for pre-term neonates. This study aims to establish normative reference values across acoustic and perceptual parameters of swallowing sounds in pre-term neonates on thin fluids. Swallowing sounds were recorded from a digital microphone during oral feeding observations. Acoustic parameters of duration, peak frequency, peak power and peak intensity were determined. Perceptual parameters heard pre, during and post-swallows were rated (‘present’, ‘absent’, ‘cannot be determined’). 80 pre-term neonates (43 males; mean age=33.4 weeks [SD 2.6]) demonstrated mean swallow durations of <1 second. Number of medical co-morbidities correlated to peak amplitude (r=0.26; 95%CI 0.05,0.48). A majority of pre-term neonates have coordinated swallows that are quick and completed in <1 second. The perceptual parameters of a bolus transit sound and glottal release sound were present in all pre-term neonates. One in five pre-term neonates have an uncoordinated swallow where wheeze, stridor and wet breath sounds were present post-swallow. This study provides clinicians with reference values when using cervical auscultation in the newborn care setting.

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Adj Assoc Prof Frakking is an Advanced Speech Pathologist (Paediatrics) and Clinician Research Fellow at Gold Coast University Hospital and Acting Research Director at Caboolture Hospital. She is the top-most prolific author in Australia and ranked 8th internationally in the field of cervical auscultation. Her work on cervical auscultation has been cited in guidelines by 58 institutions nationally and internationally; and includes a position statement for the Latin America Dysphagia Society for the management of oropharyngeal and esophageal dysphagia during the COVID-19 pandemic. She has attracted >$2 million in research funding, including a MRFF grant focussing on the application of machine learning techniques with cervical auscultation to improve the accurate detection of aspiration in neonates and children. She supervises research higher degree students and provides mentoring and clinical supervision to practising speech pathology clinicians and students in the field of paediatric feeding disorders.

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