著者

田中 睦子 河野 健治 花輪 剛久 鈴木 正彦 中島 新一郎

出版者

一般社団法人日本医療薬学会

雑誌

医療薬学 (ISSN:1346342X)

巻号頁・発行日

vol.28, no.2, pp.152-156, 2002-04-10 (Released:2011-03-04)

参考文献数

12

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Di-2-ethylhexyl Phthalate (DEHP) was reported to dissolve from a polyvinyl chloride (PVC) administration tube during the infusion of an injection fluid containing a solvilizing agent, soybean oil or lecithin, etc. This paper describes the behavior of DEHP dissolution from PVC tubes during enteral tube feeding. The DEHP concentration was determined using HPLC. After the passage the ENSURE LIQUID® (EL) solution through the PVC tube, DEHP was dissolved in the EL solution. The EL solution is one type of enteral nutrition. This dissolution pattern was similar to that of injection fluid containing a solvilizing agent, in which the DEHP concentration in the EL solution increased linearly over time at first and thereafter reached a plateau. 170 μg of the DEHP was dissolved after 200mL of the EL solution had passed through the PVC administration set (the drip conditions were 25°C, 100mL/hr, tube length 115cm and inner diameter 0.3cm). The amount of DEHP which dissolved into the solution depended on the temperature (25-40°C), and no clear difference was observed between the PVC tubes (administration tube, feeding tube). In addition, the amount of DEHP that dissolved into the solution varied depending on the type of enteral nutrition.