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International Dysphagia Diet Standardisation Initiative(IDDSI)は,とろみ水の簡易な粘度測定法としてシリンジ法を考案し,とろみ水やバリウムとろみ水の粘度基準値を提唱している.日本摂食嚥下リハビリテーション学会は,シリンジ法を用いたとろみ水の粘度基準値を提唱しているが,バリウムとろみ水への応用は検討されていない.本研究では日本で流通しているテルモシリンジを用いて,バリウムとろみ水の粘度計測が可能か検証した.併せて,シリンジ法の再現性についても検討した.テルモシリンジを用いたシリンジ法のICC値は0.99(95%信頼区間:0.99〜1.00)を示した.また,テルモシリンジとBD-Slipの間で単回帰分析を行った結果,決定係数は0.99,回帰式はy=1.0392x-0.4039を示した.以上より,シリンジ法によるバリウムとろみ水の粘度計測は,テルモシリンジを用いて代用可能であることが示唆された.ただし,バリウムの物性特性が影響し,通常のとろみ水に比べ,粘度が薄く算出される可能性があることに注意が必要である.
The International Dysphagia Diet Standardisation Initiative (IDDSI) has developed the flow test as a simple viscosity measurement technique for thickened liquids and proposed viscosity standard values for thickened liquids and thickened barium liquids. The Japanese Society of Dysphagia Rehabilitation has proposed viscosity standard values for thickened liquids using the flow test, but its application to thickened barium liquids has not been examined. Additionally, the syringe recommended by IDDSI, the BD-Slip, is not available in Japan. Therefore, this study aimed to verify the feasibility of measuring the viscosity of thickened barium liquids using the “Terumo Syringe,” which is available in Japan. The reproducibility of the flow test was also examined. The Intraclass Correlation Coefficient for the syringe method using the Terumo Syringe was 0.99 (95% Confidence Interval:0.99-1.00). Furthermore, a simple linear regression analysis between the Terumo Syringe and BD-Slip showed a coefficient of determination of 0.99, with the regression equation being y = 1.0392x - 0.4039. These results suggest that the BD-Slip for the flow test for measuring the viscosity of thickened barium liquids can be substituted with the Terumo Syringe. However, it is important to note that the physical properties of barium may affect the measurement, potentially resulting in lower viscosity values compared to those for standard thickened liquids.

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