This article offers a nice overview of anticoagulation in CRRT:
Jamshid Amanzadeh and Robert F. Reilly, Jr. Anticoagulation and Continuous Renal Replacement Therapy Seminars in Dialysis—Vol 19, No 4 (July–August) 2006 pp. 311–316
For a definitive treatment of all of this, you ought to pay homage to the gigantic and all-encompassing "Critical Care Nephrology" by Ronco Bellomo and Kellum (2009).
Finally, the Gambro and Fresenius websites have been an excellent source of information.
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