Development of a Novel Viscometer Easily Used at Caregiving Sites

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  • 臨床現場で実用可能なマドラー型粘度測定機器の開発
  • リンショウ ゲンバ デ ジツヨウ カノウ ナ マドラーカタ ネンド ソクテイ キキ ノ カイハツ

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Abstract

<p>Objective:　Thickened liquid is a worldwide intervention approach for dysphagia. The widespread use of thickened liquid has created a need to establish clear terminology to describe the proper consistency that is recommended for patients with dysphagia. The Japanese Dysphagia Diet 2013 (JDD2013) classified thickened liquid into three levels of thickness, and explained not only the subjective assessment but also the viscosity ranges measured by a cone and plate type viscometer. However, the high price, complex operation and time taken to operate the viscometer discouraged its use in the clinical setting.</p><p>Therefore, the viscosity of thickened liquid should be quantified with an objective device. We developed a new device, TOROMADORA®, for evaluating the viscosity of thickened liquid. In this study, we investigated the applicability of TOROMADORA®.</p><p>Methods:　Verification test no. 1: We prepared six samples which were commercially available seasonings. Each sample was adjusted to 20, 30, 40℃, making 18 samples in total. The 18 samples were measured by TOROMADORA®, and the measurements were compared with the viscosity measured by a cone and plate type viscometer. Verification test no. 2: We prepared commercially available orange juice and water thickened by three thickening agents containing xanthan gum. The thickness levels of the samples were controlled according to JDD2013 for thickened liquid. The samples were measured by TOROMADORA® and the cone and plate type viscometer.</p><p>Results:　Verification result no. 1: At 20℃ and 40℃, there was a correlation between the measurements by the cone and plate type viscometer and the measurements by TOROMADORA®. Verification result no. 2: The thickness of the samples with various thickening agents in the different solvents measured by TOROMADORA® was closely correlated with those measured by the viscometer.</p><p>Conclusion:　This study suggested that TOROMADORA® can measure the viscosity of thickened liquid.</p>

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