Evaluation of three different methods to prevent dialyzer clotting without causing systemic anticoagulation effect

Artificial Organs
Pavlina RichtrovaTomas Reischig

Abstract

Thrombogenicity is one of the most important biocompatibility markers of artificial material. Anticoagulation is commonly used to reduce thrombogenicity of the extracorporeal circuit (ECC) during intermittent hemodialysis (IHD). In some situations, systemic anticoagulants are contraindicated. The aim of our study was to compare thrombogenicity parameters during IHD with three different methods without a systemic anticoagulation effect. In a prospective, randomized, and crossover study, we examined 10 stable patients during IHD with (i) regular saline flushes of ECC; (ii) regional citrate anticoagulation (RCA); and (iii) AN69 ST membrane after ECC priming according to the manufacturer's recommendations. Before IHD and after 10, 60, 120, and 240 min, we measured the platelet count and the plasma concentrations of platelet factor 4 (PF4) and thrombin/antithrombin complexes (TAT). All 10 procedures with RCA were successfully completed after 4 h, whereas 6/10 procedures with saline flushes and 5/10 procedures with AN69 ST were finished prematurely because of clotting (P < 0.05). The TAT production was significantly increased during saline flushes and AN69 ST compared with RCA (P < 0.05). Platelet activation demonstrated by rising PF...Continue Reading

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Citations

Mar 8, 2012·Artificial Organs·Paul S Malchesky
May 23, 2014·Medizinische Klinik, Intensivmedizin und Notfallmedizin·R D Frank
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Nov 2, 2014·The International Journal of Artificial Organs·Tobias KyrkBernd Stegmayr
Aug 5, 2021·Clinical Kidney Journal·Ines VandenboschBjörn Meijers

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