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  • Poster presentation
  • Open Access

Hypercalcemia during renal replacement therapy after liver transplantation

  • 1,
  • 1 and
  • 1
Critical Care201115 (Suppl 1) :P113

  • Published:


  • Bilirubin
  • Liver Transplantation
  • Renal Replacement Therapy
  • Total Bilirubin
  • Acute Kidney Injury


Patients who suffer from acute kidney injury (AKI) show electrolyte abnormalities that can be corrected using renal replacement therapy (RRT). But some reports showed hypercalcemia during RRT and they reasoned this as the effect of citrate used for anticoagulant. We report eight post-liver transplantation (LT) recipients who suffered from AKI requiring RRT without citrate, but showed abnormal increase of ionized calcium (iCa) levels.


We retrospectively identified the recipients who suffered from AKI requiring CRRT after LT. Then we picked up those who had increased iCa over 1.25 mmol/l as hypercalcemia (group H). We compared these recipients with those who matched in graft-recipient weight ratio (G/R) and intraoperative transfusion (units/kg) as controls (group N). Data were expressed as means with standard deviations. Analyses were made using Student's t test. We considered P < 0.05 statistically significant.


Among 250 recipients who had undergone LT in our hospital, 12 recipients received RRT. All RRT patients received nafamostat mesilate for anticoagulation. Eight patients had increased iCa (group H). All recipients in group H died during their index hospitalization. Compared with group N, group H had a higher iCa (1.3 ± 0.1 vs. 1.1 ± 0.0 mmol/l) and total bilirubin (T.Bil; 17 ± 9 vs. 4 ± 0 mg/dl). See Table 1.
Table 1



Group H

Group N

P value


0.9 ± 0.4

0.9 ± 0.3



0.3 ± 0.3

0.3 ± 0.4



0.8 ± 0.7

0.6 ± 0.5



0.2 ± 0.3

0.3 ± 0.3



1.3 ± 0.1

1.1 ± 0.0

< 0.01


17 ± 9

4 ± 0

< 0.01


We reported eight LT recipients who suffered from AKI and required RRT and had abnormally increased iCa levels without using citrate as anticoagulant. Only T.Bil was higher in the hypercalcemic group compared with the matched control. Because all of the eight hypercalcemic patients with CRRT died, this abnormality would be important for patient outcome.

Authors’ Affiliations

Okayama University Hospital, Okayama, Japan


© Matsumi et al. 2011

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.