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The correct and incorrect positions of vascular accesses of continuous kidney replacement therapy (CKRT). (A) For case A, we placed one 8-Fr Hemocath 
via the umbilical vein, and the location of the catheter tip was appropriated. (B) We also tried to establish vascular access via the umbilical vein for case B. The catheter tip was at the portal vein and could not provide satisfactory duration for dialysis.
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F1
Therefore, when guiding the wire, we changed the vascular access to a larger 8-Fr Hemocath (MedCOMP  Medical Components, Inc., Harleysville, PA, USA) that was placed in the umbilical vein (Figure 1A). We tried to establish vascular access via the umbilical vein with a 7-Fr CVC (ARROW ) catheter; however, this failed was due to the tip of the catheter being located in the portal vein (Figure 1B).
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