Elicit: Standard of Care in Acute Kidney Injury (public)
Standard of Care in Acute Kidney Injury
What is the standard of care for acute kidney injury?
Acute kidney injury standard care includes delayed rather than preemptive renal replacement therapy initiation, standard dosing targets, modality selection based on patient hemodynamics and resources, and care bundles with early nephrology consultation.
Abstract
Acute kidney injury care relies on initiating renal replacement therapy (RRT) only when conventional indications are present rather than preemptively. Large randomized trials and meta-analyses note that early or accelerated initiation does not reduce 90‐day mortality and may lead to more adverse events, as many patients in delayed arms avoid RRT altogether. Standard dosing targets provide outcomes similar to intensified regimens, and modality choice—whether continuous therapies, intermittent hemodialysis, or peritoneal dialysis—is guided by patient hemodynamic status, local expertise, and resource availability (with peritoneal dialysis endorsed by the International Society for Peritoneal Dialysis). Additionally, care bundles aligned with best practice guidelines and early nephrology involvement improve process measures such as AKI recognition and documentation, with some studies reporting reductions in progression and rehospitalization.
Methods
We analyzed 40 sources from an initial pool of 1000, using 8 screening criteria. Each paper was reviewed for 6 key aspects that mattered most to the research question. More on methods
Screening Criteria
- AKI Population: Studies include patients diagnosed with acute kidney injury (AKI) as defined by established criteria (KDIGO, RIFLE, or AKIN).
- Standard Care Interventions: Studies examine therapeutic interventions, management strategies, or treatment protocols that are standard care for AKI (excluding experimental treatments).
- Clinical Outcomes: Studies report clinical outcomes such as renal recovery, mortality, dialysis requirement, length of stay, or complications.
- Study Design: Studies include randomized controlled trials, observational studies, clinical practice guidelines, systematic reviews, or meta-analyses.
- Population and Setting: Studies include adult patients (≥18 years) in hospitals or clinical settings.
- Treatment Focus: Studies focus on treatment of established AKI rather than solely prevention.
- Primary AKI Focus: Studies focus on AKI management rather than examining AKI as a secondary outcome.
- Human Studies: Only human studies (not in vitro or animal research).
Data Extraction
Study Design
- Example: Randomized controlled trial
Setting and Context
- Location: Multiple countries and continents (as indicated by references).
- Unique Contextual Features: Critically ill patients with AKI.
Participant Population
- Total participants: 4753
- Inclusion criteria for AKI: Critically ill adults with KDIGO stage 2/3 AKI.
Intervention Details
- Standard care: Timing of renal replacement therapy initiation (accelerated vs. standard).
Primary Outcomes
- Mortality rate: Accelerated RRT group: 45.5%, Standard RRT group: 46.6%; p = 0.46.
Risk of Bias Assessment
- Randomization method: Low risk in 80% of trials.
Results
Characteristics of Included Studies
| Study | Population | Intervention/Topic | Key Outcomes measured |
|---|---|---|---|
| Sohaney et al., 2020 | 3019 critically ill adults with KDIGO stage 2/3 | Accelerated vs. standard KRT initiation | 90-day mortality, KRT dependence, adverse events |
| Kolhe et al., 2015 | 2297 patients, 2500 AKI episodes | AKI care bundle with electronic alert | In-hospital case fatality, AKI progression |
| Aitken et al., 2013 | 1577 hospital admissions | Standard care | Mortality, AKI recognition, documentation |
| Landoni et al., 2013 | >300 physicians (survey); literature review | Systematic review and survey | Mortality, intervention-practice gap |
| STARRT-AKI Investigators, 2020 | 3019 ICU patients with KDIGO stage 2/3 | Accelerated vs. standard RRT | 90-day mortality, RRT dependence, adverse events |
| Kolhe et al., 2016 | 3518 patients, 3717 AKI episodes | AKI care bundle (fluid, drugs, nephrotoxins) | In-hospital case fatality, AKI progression |
Summary
The included studies reported that the standard of care for acute kidney injury includes:
- Initiation of renal replacement therapy for conventional indications, not preemptively, in critically ill acute kidney injury.
- Use of standard renal replacement therapy dosing targets; higher intensity did not improve outcomes in the studies reviewed.
- Modality selection based on patient context, with peritoneal dialysis as a viable option according to guidelines.
- Implementation of care bundles and early nephrology involvement improved process measures and may reduce adverse outcomes.
The evidence was strongest for renal replacement therapy timing and dosing, with multiple large randomized controlled trials and meta-analyses.