DinCH and ESBO actual migration from PVC infusion tubings used in an oncopediatric unit

摘要

Plasticizer leaching from poly(vinyl chloride) (PVC) tubing is a well-studied phenomenon and is a real issue in medical care today. The present study focuses on the release of two plasticizers 1,2-cyclohexane dicarboxylic acid diisononyl ester (DINCH) (primary) and epoxidized soy bean oil (ESBO) (secondary) from PVC extension tubings used in an oncopediatric unit. The release of plasticizers is calculated by comparison to unused tubings with the same batch number. Both the DINCH and ESBO ratio diminishes in used versus new extension tubings. The loss of plasticizers has not been related to the presence of a specific drug. Our results confirm the leaching of classic plasticizers like the DINCH and of secondary plasticizers like the ESBO from tubings in real life. It confirms too the existence of a complex phenomenon in which exchanges between drugs, lipids, PVC matrices, and the administration sequences can change the global release of plasticizers. Considering all the variables involved in real-life data, the in vitro testing appears to be the most efficient way to confirm these observations. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46649.