Influence of plasticised poly (vinyl chloride) on platelet adhesion and platelet aggregates
Jones, C.; Courtney, J.M.; Robertson, L.M.; Biggs, M.S.; Lowe, G.D.
International Journal of Artificial Organs 12(7): 466-470
1989
ISSN/ISBN: 0391-3988 PMID: 2767792 Document Number: 332779
The most widely used plasticiser for poly(vinyl chloride) (PVC) is di-(2-ethyl-hexyl) phthalate (DEHP), which is extracted in contact with blood. One approach to reducing plasticiser extraction is to incorporate the higher molecular weight plasticisers trioctyl trimelitate (TOTM) and polymeric adipate (PA). This investigation has compared the influence of these plasticisers with that of DEHP on platelet adhesion and platelet aggregate formation. PVC tubing was tested in the absence of anticoagulants and in the presence of heparin. Our results demonstrate that influence of plasticisers on platelet response and support the view that evaluation of such plasticisers should be extended from an examination of toxicological properties to a comprehensive blood compatibility assessment.