Optimized Calcium Supplementation Approach for Regional Citrate Anticoagulation
Wenyan Yu1, Feng Zhuang1, Shuai Ma1
1Division of Nephrology and Critical Care Nephrology Unit, Shanghai Ninth People's Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai, China.
Nephron
|November 19, 2018
Summary
This study optimizes calcium supplementation for regional citrate anticoagulation (RCA), simplifying monitoring and enhancing widespread use. A new approach precisely estimates extracorporeal calcium removal, improving RCA safety and efficacy.
Area of Science:
- Nephrology
- Critical Care Medicine
- Biomedical Engineering
Background:
- Regional citrate anticoagulation (RCA) is effective for extracorporeal circuits.
- Current calcium supplementation for RCA is imprecise, hindering its broader application.
- Intensive calcium monitoring limits the widespread adoption of RCA.
Purpose of the Study:
- To optimize the calcium supplementation strategy for regional citrate anticoagulation (RCA).
- To develop a more precise and practical method for estimating extracorporeal calcium removal during RCA.
Main Methods:
- Patients undergoing RCA were monitored for ionized calcium levels.
- Linear regression analyzed the relationship between non-protein bound calcium (n-Ca) clearance and effluent rate.
- The ratio of n-Ca to total calcium (fa) was calculated to develop a simplified calcium supplementation approach.
Main Results:
- Significant positive correlations were observed between n-Ca clearance and effluent rate in both CVVHD and CVVH.
- The fa values were constant post-citrate infusion but varied between CVVHD (0.93) and CVVH (0.80).
- A simplified equation was derived to quantify extracorporeal calcium removal based on n-Ca characteristics.
Conclusions:
- The optimized calcium supplementation approach offers a precise and practical method for managing RCA.
- This method accurately estimates extracorporeal calcium removal across different RCA modalities and dosages.
- The findings support the wider implementation of RCA by addressing current limitations in calcium management.
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