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4.8 - Renal Replacement Therapy in Critical Care

from Section 4 - Therapeutic Interventions and Organ Support

Published online by Cambridge University Press:  27 July 2023

Ned Gilbert-Kawai
Affiliation:
The Royal Liverpool Hospital
Debashish Dutta
Affiliation:
Princess Alexandra Hospital NHS Trust, Harlow
Carl Waldmann
Affiliation:
Royal Berkshire Hospital, Reading
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Summary

Key Learning Points

  1. 1. Conventional indications for renal replacement therapy (RRT) are refractory hyperkalaemia, refractory metabolic acidosis, pulmonary oedema, uraemia and sustained oliguria or anuria with fluid overload.

  2. 2. Two major principles of RRT are diffusion and convection.

  3. 3. Intermittent haemodialysis (IHD), prolonged intermittent renal replacement therapy (PIRRT) and continuous renal replacement therapy (CRRT) are commonly used in intensive care units. These modalities differ in regard to the duration of therapy and blood flow rate, hence the rapidity of solute and fluid removal. They are used to supplement one another according to each patient’s status and clinical settings.

  4. 4. When prescribing CRRT, the modality, vascular access, blood flow rate, dose, anticoagulation, target fluid balance and fluid composition should be considered.

  5. 5. RRT-related complications, such as vascular access complications, hypotension and electrolyte imbalances, should be frequently monitored, prevented and appropriately managed.

Type
Chapter
Information
Intensive Care Medicine
The Essential Guide
, pp. 500 - 509
Publisher: Cambridge University Press
Print publication year: 2021

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References

References and Further Reading

Barbar, SD, Clere-Jehl, R, Bourredjem, A, et al. Timing of renal replacement therapy in patients with acute kidney injury and sepsis. N Engl J Med 2018;379:1431.CrossRefGoogle ScholarPubMed
Bellomo, R, Ronco, C, Mehta, RL, et al. Acute kidney injury in the intensive care unit: from injury to recovery: reports from the 5th Paris International Conference. Ann Intensive Care 2017;7:49.CrossRefGoogle ScholarPubMed
Gaudry, S, Hajage, D, Schortgen, F, et al. Initiation strategies for renal replacement therapy in intensive care units. N Engl J Med 2016;375:122–33.CrossRefGoogle Scholar
RENAL Replacement Therapy Study Investigators; Bellomo, R, Cass, A, Cole, L, et al. Intensity of continuous renal-replacement therapy in critically ill patients. N Engl J Med 2009;361:1627–38.Google ScholarPubMed
VA/NIH Acute Renal Failure Trial Network. Intensity of renal support in critically ill patients with acute kidney injury. N Engl J Med 2008;359:720.CrossRefGoogle Scholar
Zarbock, A, Kellum, JA, Schmidt, C, et al. Effect of early vs delayed initiation of renal replacement therapy on mortality in critically ill patients with acute kidney injury: the ELAIN Randomized Clinical Trial. JAMA 2016;315:2190–9.CrossRefGoogle ScholarPubMed

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