 One medication used to thin the blood in the dialysis machine is citrate. Citrate has the advantage of having its blood-thinning properties quickly reversed by calcium in the patients blood. As a consequence, only the blood in the machine is thinned, greatly reducing the risk of bleeding when dialysis is carried out using other blood thinners. Until now, most patients who received citrate for dialysis were administered the citrate in a separate infusion through an IV pump into the dialysis machine. This method requires complex monitoring and calculations. This study is about Prismocitrate which is a dialysis fluid very similar to the regular dialysis fluid that is used in this intensive care unit, except that this fluid already contains exactly the correct amount of citrate. Thus, this method does not require a separate pump for citrate and calculations to pump the citrate into the blood as it goes through the kidney machine. Having the citrate already contained in the dialysis fluid simplifies the procedure and reduces the possibility of calculation errors. 