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Clinical impact of regional citrate anticoagulation in continuous renal replacement therapy in critically ill patients

Abstract

Background

Regional citrate anticoagulation (RCA) is being used increasingly in continuous renal replacement therapy (CRRT) as a safer alternative to heparin. However, complex metabolic control to avoid side effects have generated discrepancies about its introduction into everyday practice. We aimed to compare both anticoagulation techniques in terms of efficacy, safety and feasibility.

Methods

Observational retrospective study performed in 3 specialized ICUs in patients receiving CVVHDF with RCA between January 2013 and May 2016. Heparin-treated patients matched by age, sex and disease severity treated in the preceding year were selected as historic controls. Filter lifetime, number of filters used, haemorrhagic complications and metabolic complications were recorded.

Results

54 patients (27 treated with RCA and 27 with heparin) were included in the study. Filter lifetimes in the first 72 hours were 55.1 ± 21.8 hours in the RCA group compared to 38.8 ± 24.8 hours in the heparin group, (p = 0.004). In addition, the number of filters used in the first 72 hours was significantly higher in the heparin group (2.4 ± 1.3 vs. 1.5 ± 0.7; p = 0.004). There was a trend toward a lower incidence of bleeding in the RCA group, with a significantly lower red blood cell transfusion rate (p = 0.027) in the citrate group. No clinically significant metabolic disturbances were observed in the RCA group. Regarding outcomes, there were no significant differences between groups.

Conclusions

These results suggest that the implementation of CVVHDF with RCA using concentrated citrate solutions prolongs filter lifetime, achieves a longer effective hemodiafiltration time and is a safe and feasible method.

Post author correction

Article Type: ORIGINAL RESEARCH ARTICLE

DOI:10.5301/ijao.5000633

Authors

Maria Huguet, Lida Rodas, Miquel Blasco, Luis F. Quintana, Jordi Mercadal, Jose T. Ortiz-Pérez, Irene Rovira, Esteban Poch

Article History

Disclosures

Financial support: No grants or funding have been received for this study.
Conflict of interest: None of the authors has financial interest related to this study to disclose.

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Authors

Affiliations

  • Nephrology Department, Hospital Clinic, IDIBAPS, University of Barcelona, Barcelona - Spain
  • Anaesthesiology Department, Hospital Clinic, IDIBAPS, University of Barcelona, Barcelona - Spain
  • Cardiology Department, Hospital Clinic, IDIBAPS, University of Barcelona, Barcelona - Spain
  • Cardiac Surgery Department, Hospital Clinic, IDIBAPS, University of Barcelona, Barcelona - Spain
  •   Maria Huguet and Lida Rodas contributed equally to this study and are listed in alphabetical order.

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