Effect of Renal Replacement Therapy on Acid–Base Homeostasis

2005 ◽  
pp. 719-738 ◽  
Keyword(s):  
Renal Replacement Therapy ◽  
Replacement Therapy ◽  
Acid Base

scholarly journals Complications of Regional Citrate Anticoagulation for Continuous Renal Replacement Therapy: An Observational Study

2020 ◽  
Vol 49 (5) ◽  
pp. 567-575 ◽  
Author(s):  
Nathan Axel Bianchi ◽  
Marco Altarelli ◽  
Philippe Eckert ◽  
Antoine Guillaume Schneider
Keyword(s):  
Renal Replacement Therapy ◽  
Continuous Renal Replacement Therapy ◽  
Replacement Therapy ◽  
Real Life ◽  
Regional Citrate Anticoagulation ◽  
Acid Base ◽  
Metabolic Complications ◽  
Citrate Anticoagulation ◽  
Randomized Controlled ◽  
Heparin Anticoagulation

Introduction: Regional citrate anticoagulation (RCA) is the recommended anticoagulation modality for continuous renal replacement therapy (CRRT). RCA was associated with a low rate of complications in randomized controlled trials. However, little is known about the type and rate of complications in real life. We sought to describe complications associated with RCA in comparison with those associated with heparin anticoagulation. Methods: In our institution, RCA has been the default anticoagulation modality for CRRT in all patients without contraindications since 2013. We have retrospectively reviewed all consecutive patients who received CRRT between January and December 2016 in our institution. For each CRRT session, we have assessed circuit duration, administered dose, as well as therapy-associated complications. Those parameters were compared according to whether the circuit was run in continuous veno-venous hemodialysis (CVVHD) mode with RCA or continuous veno-venous hemofiltration (CVVH) mode with heparin anticoagulation. Results: We analyzed 691 CRRT sessions in 121 patients. Of those 400 (57.9%) were performed in CVVHD-RCA mode and 291 (42.1%) in CVVH-Heparin Mode. Compared with ­CVVH-Heparin mode, CVVHD-RCA mode was associated with a longer circuit lifespan (median duration 54.9 interquartile range [IQR 44.6] vs. 15.3 h [IQR 22.4], p < 0.0001). It was associated with a higher rate of metabolic acidosis 77 (20.2%) vs. 18 (7.2%), (p < 0.0001), alkalosis 186 (48.7%) vs. 43 (17.1%), (p= 0.0001), and hypocalcemia 96 (25.07%) vs. 26 events (10.79%), p < 0.0001. However, the majority of these alterations were of benign or moderate severity. Only one possible citrate intoxication was observed. Conclusions: CVVHD-RCA was associated with a much longer circuit life but an increased rate of minor metabolic complications, in particular acid-base derangements. Some of these complications might have been prevented by therapy adaptation. Medical and nursing staff education is of major importance in the implementation of an RCA protocol.

scholarly journals Precision Fluid Management in Continuous Renal Replacement Therapy

2016 ◽  
Vol 42 (3) ◽  
pp. 266-278 ◽  
Author(s):  
Raghavan Murugan ◽  
Eric Hoste ◽  
Ravindra L. Mehta ◽  
Sara Samoni ◽  
Xiaoqiang Ding ◽  
...  
Keyword(s):  
Renal Replacement Therapy ◽  
Continuous Renal Replacement Therapy ◽  
Replacement Therapy ◽  
Fluid Balance ◽  
Fluid Management ◽  
Standards Of Care ◽  
Future Research ◽  
Acid Base ◽  
Plasma Electrolyte ◽  
The Individual

Fluid management during continuous renal replacement therapy (CRRT) in critically ill patients is a dynamic process that encompasses 3 inter-related goals: maintenance of the patency of the CRRT circuit, maintenance of plasma electrolyte and acid-base homeostasis and regulation of patient fluid balance. In this article, we report the consensus recommendations of the 2016 Acute Disease Quality Initiative XVII conference on ‘Precision Fluid Management in CRRT'. We discuss the principles of fluid management, describe various prescription methods to achieve circuit integrity and introduce the concept of integrated fluid balance for tailoring fluid balance to the needs of the individual patient. We suggest that these recommendations could serve to develop the best clinical practice and standards of care for fluid management in patients undergoing CRRT. Finally, we identify and highlight areas of uncertainty in fluid management and set an agenda for future research.

Continuous veno-venous hemofiltration with regional citrate anticoagulation: A four-year single-center experience

2008 ◽  
Vol 31 (11) ◽  
pp. 937-943 ◽  
Author(s):  
T. Cassina ◽  
R. Mauri ◽  
A. Engeler ◽  
O. Giannini
Keyword(s):  
Clinical Practice ◽  
Renal Replacement Therapy ◽  
Life Span ◽  
Replacement Therapy ◽  
Ionized Calcium ◽  
Buffer Effect ◽  
Acid Base ◽  
Replacement Solution ◽  
Citrate Accumulation ◽  
Regional Anticoagulation

Background Hemofiltration protocols using a citrate-buffered replacement solution offer the advantage of regional anticoagulation and a buffer effect. The role played by such fluids in clinical practice is not yet well established. The risk of electrolytic disorders, acid-base imbalance, or citrate accumulation should be clarified. We report on a renal therapy protocol based on a citrate isonatremic replacement solution. Method We considered all patients needing renal replacement therapy admitted to our cardiovascular intensive care unit between January 2003 and June 2007. A citrate-buffered fluid was delivered in pre-dilution mode to a post-filter ionized calcium target ≤0.25 mmol/L. Extracorporeal blood flow was set at a constant of 140±10 ml/min. Blood calcemia was maintained by a 5% calcium-chloride solution infused into the patient. We recorded the patients' acid-base variables, ionized calcium, daily electrolytes, albumin, urea and filter life-span. Results We observed 101 consecutive patients out of 2,523; incidence 4%, overall mortality was 57% at ICU discharge. Mean replacement rate was 2,554±475 ml/h corresponding to 34±5 ml/kg/h. Mean patient ionized calcium level was 1.07±0.04 mmo/L, maintained by 13±2 ml/h of infused calcium-chloride. All other electrolytes remained in the normal range. The Stewart biophysical approach confirmed a strong anion gap of 3.1± 3 meq/L. Acid-base balance showed a buffer effect. Mean filter life-span was 52±11 h. Conclusion Renal replacement therapy based on citrate-buffered fluid may be useful in clinical practice. This methodology presented an adequate metabolic control and allowed regional anticoagulation. A sufficient calcium supply was mandatory to avoid hypocalcemia. The small strong ion gap suggested a modest citrate accumulation.

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