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Endoscopic and observational findings of swallowing of traditional and molded puree in healthy individuals

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Abstract

Puree is commonly prescribed for patients with mastication and bolus formation difficulties, but its appearance might negatively impact appetite and intake. Molded puree is marketed to be an alternative to traditional puree, but the process of molding puree could alter the properties of the food significantly and lead to different swallowing physiology as compared to puree. The current study investigated the differences between traditional and molded puree in terms of swallowing physiology and perception in healthy individuals. Thirty two participants were included. Two outcomes were used to quantify the oral preparatory and oral phase. Fibreoptic endoscopic evaluation of swallowing was used to assess the pharyngeal phase as it could retain the purees in their original form. Six outcomes were collected. Perceptual rating of the purees were provided by participants in six domains. Molded puree required significantly more masticatory cycles (p < 0.001) and longer time for ingestion (p < 0.001). Molded puree had longer swallow reaction time (p = 0.001) and more inferior site of swallow initiation (p = 0.007) compared with traditional puree. Participants’ satisfaction with the appearance, texture and overall of molded puree was significantly greater. Molded puree was perceived to be more difficult to chew and swallow. This study established that the two types of puree were different in various aspects. The study also provided important clinical implications regarding the use of molded puree as a form of texture modified diet (TMD) in patients with dysphagia. The results could serve as the foundation of larger cohort studies on the effect of various TMDs on patients with dysphagia.

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Acknowledgements

The authors would like to thank all participants and helpers who assisted with participant recruitment.

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Authors and Affiliations

  1. Department of Otorhinolaryngology, Head and Neck Surgery, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China

    Meko Ka Lam Wong, Peter Ka Ming Ku, Michael Chi Fai Tong, Kathy Yuet Sheung Lee & Raymond Fong

  2. Institute of Human Communicative Research, The Chinese University of Hong Kong, Hong Kong, China

    Michael Chi Fai Tong, Kathy Yuet Sheung Lee & Raymond Fong

  3. Department of Ear, Nose & Throat, United Christian Hospital, Hong Kong, China

    Peter Ka Ming Ku

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Correspondence to Raymond Fong.

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Wong, M.K.L., Ku, P.K.M., Tong, M.C.F. et al. Endoscopic and observational findings of swallowing of traditional and molded puree in healthy individuals. Dysphagia 38, 1363–1370 (2023). https://doi.org/10.1007/s00455-023-10565-2

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