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3.2.1 - Acute Kidney Injury

from Section 3.2 - Acute Renal Failure

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. Acute kidney injury (AKI) is characterised by an acute decline in glomerular filtration rate, defined by an increase in serum creatinine and/or fall in urine output, according to the Kidney Disease: Improving Global Outcomes (KDIGO) criteria.

  2. 2. Clinical risk scores, biomarkers and stress tests have been developed for prediction and risk stratification in AKI. Combining risk scores with biomarkers or stress tests can increase accuracy in AKI prediction and prognostication.

  3. 3. Common causes of AKI in critically ill patients are hypovolaemia, sepsis, nephrotoxin exposure and haemodynamic instability, often in combination. Each cause has distinct and complex pathogenesis.

  4. 4. General principles of AKI management are optimisation of haemodynamic and fluid status with appropriate monitoring, serial measurement of creatinine and electrolytes, urine output monitoring, glucose control, avoidance of nephrotoxic drugs, treatment of the underlying cause, management of potential AKI-related complications and renal replacement therapy if indicated.

  5. 5. AKI is associated with short- and long-term complications, premature chronic kidney disease and end-stage renal disease and death. Monitoring of AKI survivors is essential.

Type
Chapter
Information
Intensive Care Medicine
The Essential Guide
, pp. 141 - 156
Publisher: Cambridge University Press
Print publication year: 2021

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References

References and Further Reading

Griffin, BR, Liu, KD, Teixeira, JP. Critical care nephrology: core curriculum 2020. Am J Kidney Dis 2020;75:435–52.CrossRefGoogle ScholarPubMed
Khwaja, A. KDIGO clinical practice guidelines for acute kidney injury. Nephron Clin Pract 2012;120:c179–84.CrossRefGoogle ScholarPubMed
Koyner, JL, Thakar, CV. Acute kidney injury and critical care nephrology. Nephrology Self-Assessment Program 2017;16(2).Google Scholar
Moore, PK, Hsu, RK, Liu, KD. Management of acute kidney injury: core curriculum 2018. Am J Kidney Dis 2018;72:136–48.Google ScholarPubMed
Ostermann, N, Joannidis, M. Acute kidney injury 2016: diagnosis and diagnostic workup. Crit Care 2016;20:299.CrossRefGoogle ScholarPubMed
Ronco, C, Bellomo, R, Kellum, JA. Acute kidney injury. Lancet 2019;394:1949–64.CrossRefGoogle ScholarPubMed

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