Acute Kidney Injury Management and Clinical Outcomes

Acute kidney injury (AKI) is a rapid decline in renal function affecting millions worldwide and remains a leading contributor to morbidity and mortality in hospitalised patients. The pathophysiology encompasses a spectrum of insults—such as ischaemia–reperfusion, sepsis, nephrotoxins and haemodynamic instability—that precipitate structural and functional damage to renal tubular cells. Clinicians rely on measures of serum creatinine and urine output to diagnose and stage AKI, yet these markers often lag behind actual injury. Early recognition through emerging biomarkers and risk-stratification tools is critical for guiding interventions. Management strategies focus on optimisation of renal perfusion, careful fluid balance, avoidance of nephrotoxins and appropriate timing of renal replacement therapies such as continuous renal replacement therapy (CRRT) in critically ill cohorts. Recent advances have refined anticoagulation protocols for extracorporeal support and explored novel preventive measures in diverse settings. Despite progress, even mild AKI episodes portend long-term sequelae including progression to chronic kidney disease, emphasising the value of prompt diagnosis, tailored therapy and post-AKI surveillance to improve clinical outcomes globally.

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Acute Kidney Injury Management and Clinical Outcomes publication trend

The graph below shows the total number of articles in acute kidney injury management and clinical outcomes across all publications each year (not limited to Nature Index journals).

Technical terms

Acute Kidney Injury (AKI): A rapid decline in kidney function marked by rising serum creatinine and/or reduced urine output, occurring over hours to days.

Continuous Renal Replacement Therapy (CRRT): A form of dialysis that continuously removes solutes and fluid in critically ill patients with severe AKI.

Regional Citrate Anticoagulation (RCA): An anticoagulation technique for extracorporeal circuits using citrate infusion to chelate calcium and prevent clot formation.

Electronic alert (e-alert) system: A digital notification tool that identifies potential AKI events by monitoring clinical data in real time.

Machine learning algorithms: Computational models that analyse complex datasets to predict outcomes such as postoperative AKI risk based on multiple variables.

References

1. Management of regional citrate anticoagulation for continuous renal replacement therapy: guideline recommendations from Chinese emergency medical doctor consensus. Military Medical Research (2023).
2. Ambient heat and acute kidney injury: case-crossover analysis of 1 354 675 automated e-alert episodes linked to high-resolution climate data. The Lancet Planetary Health (2024).
3. Diagnosis, evaluation, and management of acute kidney injury: a KDIGO summary (Part 1). Critical Care (2013).
4. Prediction of the development of acute kidney injury following cardiac surgery by machine learning. Critical Care (2020).