Impact of locking solutions on conditioning biofilm formation in tunnelled haemodialysis catheters and inflammatory response activation.

The Journal of Vascular Access
Mario Jiménez HernándezNéstor Fontsere

Abstract

The surface of tunnelled cuffed catheters provides an optimal environment for the development of biofilms, which have recently been described as conditioning films because of the presence of adherent biological materials. These biofilms are associated with infection and thrombosis and potentially increase patients' inflammatory response. These complications could be reduced by the use of locking solutions. To analyse biofilm formation, using confocal and electron microscopy, in tunnelled cuffed catheters locked with three different solutions and to determine the relationship between these solutions and inflammatory response. This prospective study included 35 haemodialysis patients with tunnelled cuffed catheter removal for non-infection-related reasons. The participants were divided into three groups according to the lock solution used: (1) heparin 1: 5000 IU; (2) citrate 4%; and (3) taurolidine 1.35%, citrate 4% and heparin 500 IU (taurolock); in the latter group, 25,000 IU taurolidine-urokinase was used in the last weekly session. All tunnelled cuffed catheters were cultured, and the inner surface was evaluated with confocal and electron microscopy. The inflammatory profile of included patients was determined at tunnelled cu...Continue Reading

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Citations

Jun 3, 2021·Journal of Clinical Medicine·Joanna SzymańskaTomasz Hryszko
May 27, 2021·Nefrología : publicación oficial de la Sociedad Española Nefrologia·Néstor FontseréFrancisco Maduell
Sep 25, 2021·The Journal of Vascular Access·Julia Bodega-AzuaraJavier Reque-Santivañez

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