Flow test by the International Dysphagia Diet Standardization Initiative reveals distinct viscosity parameters of three thickening agents

Vergara, José; Teixeira, Heloisa Sant’Ana; Souza, Cinthia Madeira de; Ataide, Janaína Artem; Ferraz, Felipe de Souza; Mazzola, Priscila Gava; Mourão, Lúcia Figueiredo

doi:10.1007/s13197-022-05369-5

Cited by 4 publications

(2 citation statements)

References 36 publications

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Section: Iddsi Flow Testsupporting

confidence: 93%

“…The results demonstrated that liquid consistency based on IDDSI notation, that is, the amount of remaining liquid, increased with increasing powder concentration. At similar IDDSI level, the concentration required for each thickening powder was varied, depending on the type of thickeners and other compositions used within their formulation (Gamonpilas et al, 2023; Vergara et al, 2022). For non‐barium stimuli, samples prepared with modified starch‐based thickener, that is, TU powder, generally required the highest concentration to achieve the same consistency compared to other thickening powders used in this study.…”

Section: Resultsmentioning

confidence: 99%

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Effects of barium sulfate on rheological properties and IDDSI flow consistency of liquid stimuli prepared using commercial thickening powders

Kongjaroen

Methacanon

Gamonpilas

2023

Journal of Texture Studies

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During videofluoroscopic swallowing study (VFSS), barium sulfate (BaSO4) is commonly added into food samples as a radiopaque contrast media for bolus visualization and examination. Accordingly, the consistency and flow behavior of barium stimuli can differ significantly from their non‐barium counterparts. Such differences may have a subsequent impact on the validity of VFSS. Therefore, in this study, effects of barium sulfate on the shear and extensional rheological properties and IDDSI (International Dysphagia Diet Standardization Initiative) flow consistency of liquids prepared using various commercial thickening powders were investigated. Results showed that all barium stimuli exhibited shear thinning behavior but with significantly higher shear viscosity compared to the non‐barium counterparts. A shift factor of viscosity at shear rate 50 s−1 with values in range of 1.21–1.73 could be used to describe the increase in the viscosity for samples thickened with gum‐based thickeners. However, the change in the viscosity was not invariant for the stimuli prepared starch‐based thickener. The addition of BaSO4 had a negative impact on extensional properties of samples by demonstrating a faster filament rupture. The extent of impact on the decrease in filament breakup time was more pronounced in xanthan > guar gum ≈ tara gum‐based thickeners. Based on the IDDSI flow test, no significant effect of BaSO4 was found on the gum‐based thickeners, whereas there was a marked effect in the starch‐based sample. These results can be used beneficially to assist clinicians in the dysphagia diagnosis for matching rheological properties of the barium stimuli to enhance effectiveness dysphagia interventions.

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Section: Iddsi Flow Testsupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Effects of barium sulfate on rheological properties and IDDSI flow consistency of liquid stimuli prepared using commercial thickening powders

Kongjaroen

Methacanon

Gamonpilas

2023

Journal of Texture Studies

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Contribution of Wireless Wi-Fi Intraoral Cameras to the Assessment of Swallowing Safety and Efficiency

Vergara,

Miles,

Lopes de Moraes

et al. 2024

J Speech Lang Hear Res

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Background: Clinical evaluation of swallowing provides important clinical information but is limited in detecting penetration, aspiration, and pharyngeal residue in patients with suspected dysphagia. Although this is an old problem, there remains limited access to low-cost methods to evaluate swallowing safety and efficiency. Purpose: The purpose of this technical report is to describe the experience of a single center that recently began using a wireless Wi-Fi intraoral camera for transoral endoscopic procedures as an adjunct to clinical swallowing evaluation. We describe the theoretical structure of this new clinical evaluation proposal. We present descriptive findings on its diagnostic performance in relation to videofluoroscopic swallowing study as the gold standard in a cohort of seven patients with dysphagia following head and neck cancer. We provide quantitative data on intra- and interrater reliability. Furthermore, this report discusses how this technology can be applied in the clinical practice of professionals who treat patients with dysphagia and provides directions for future research. Conclusions: This preliminary retrospective study suggests that intraoral cameras can reveal the accumulated oropharyngeal secretions and postswallow pharyngolaryngeal residue in patients with suspected dysphagia. Future large-scale studies focusing on validating and exploring this contemporary low-cost technology as part of a clinical swallowing evaluation are warranted.

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The influence of temperature variation on the levels of the International Dysphagia Diet Standardization Initiative

Santo,

Ponsoni,

Souza

et al. 2024

CoDAS

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Purpose To analyze the influence of temperature on the flow/texture of different foods, immediately after preparation and after one hour, and 2) To compare the influence of varying the cook in food preparation, in relation to food flow. Methods This is a quantitative and experimental study. The IDDSI standardized flow test was used to evaluate the remaining volume in the syringe and the levels of foods (porridge, smoothie, liquid soup, and pureed light soup) prepared by different cooks, in triplicate, at time zero (T0) and after one hour (T1). Results Differences in temperature were observed in all foods at T0 and T1 (p < 0.05). The IDDSI level changed only in porridge, from level 3 to 4 (p = 0.043). Modifications were observed in the preparation by different cooks for smoothie, on the 2nd and 3rd day (p = 0.049), from level 3 to 4 of IDDSI. In porridge, on the 1st and 3rd day (p = 0.048) and 2nd and 3rd day (p = 0.048), with a change from level 4 to 3 of IDDSI. Conclusion The temperature of all foods differed within the one-hour interval, with modifications in the flow test and in the IDDSI levels, from level 3 to 4, only for porridge. Different cooks prepared the smoothie and porridge with different characteristics, resulting in changes from level 3 to 4 in both foods.

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Flow test by the International Dysphagia Diet Standardization Initiative reveals distinct viscosity parameters of three thickening agents

Cited by 4 publications

References 36 publications

Effects of barium sulfate on rheological properties and IDDSI flow consistency of liquid stimuli prepared using commercial thickening powders

Effects of barium sulfate on rheological properties and IDDSI flow consistency of liquid stimuli prepared using commercial thickening powders

Contribution of Wireless Wi-Fi Intraoral Cameras to the Assessment of Swallowing Safety and Efficiency

The influence of temperature variation on the levels of the International Dysphagia Diet Standardization Initiative

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