The study will evaluate the duration of filter patency using fondaparinux as an anticoagulant in haemofiltration and compare this to the current standard haemofilter anticoagulant, enoxaparin. Duration of the haemofilter life [clinicaltrials_resource:ae2ea385bcc41c68d3264af56f450d9d]

Enoxaparin Sodium (Clexane ) is to be used in the control arm of the study

The study will evaluate the duration of filter patency using fondaparinux as an anticoagulant in haemofiltration and compare this to the current standard haemofilter anticoagulant, enoxaparin. Duration of the haemofilter life [clinicaltrials_resource:ae2ea385bcc41c68d3264af56f450d9d]

Enoxaparin Sodium (Clexane ) is to be used in the control arm of the study