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Visualizing the Consistency of Thickened Liquids With Simple Tools: Implications for Clinical Practice

Visualizing the Consistency of Thickened Liquids With Simple Tools: Implications for Clinical Practice

Jane Mertz Garcia, Edgar Chambers 4th, Kelsey Cook

Am J Speech Lang Pathol. 2018 Feb 6;27(1):270-277.

PMID: 29255849

Abstract:

Purpose:
Accurate texture modifications to thin liquids are a critical aspect of patients' nutritional health and well-being. This study explored the use of 3 tools (2 distance- and 1 time-measuring devices) to characterize texture-modified liquids. The objectives were to use the tools to measure modified liquids, to determine if measurements differentiated nectar and honey levels of modification, and to compare measurements with other published reports.
Method:
We measured the flow distance of 33 prethickened water samples in centimeters (cm) using a line spread apparatus and a Bostwick Consistometer (Christison Particle Technologies). We selected a Zahn viscosity cup to measure the stream time of each prethickened liquid in seconds.
Results:
The 2 distance-measuring devices (line spread and Bostwick Consistometer) showed that thinner (nectar-thick) modifications spread or flowed a farther distance in comparison to thicker (honey-like) modifications. Testing with the line spread indicated that an average spread distance of 4.5 cm differentiated nectar-thick and honey-like consistencies. A flow distance of greater than 15 cm differentiated nectar from honey consistency measured with a Bostwick Consistometer. We were not successful in using the Zahn viscosity cup to determine the stream time of modified liquids.
Conclusions:
Two of the tools provided objective information about levels of liquid modification, which has implications for day-to-day preparation. Measurement tools that are accurate and easy to use have the potential to provide quick and dependable feedback to verify a prescribed level of liquid modification. Further efforts are needed to standardize the application of simple measurement tools in the management of patients who consume thickened liquids.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AS212978	Flow Cup Viscosity Standard			Price

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