Optimizing renal replacement therapy in the ICU

Acute kidney injury (AKI) in the intensive care unit requires a strategic approach to renal replacement therapy (RRT) that balances the kidney’s functional capacity against systemic metabolic demands. Dr. Michael Connor, an intensivist and nephrologist, emphasizes that timing for RRT initiation remains nuanced, with the furosemide stress test serving as a highly predictive tool for identifying patients at high risk of needing dialysis. Effective management relies on a six-step framework: fostering interdisciplinary collaboration, establishing clear daily goals, maintaining circuit patency through appropriate vascular access and anticoagulation, optimizing medication dosing, ensuring adequate nutrition, and proactively mitigating complications like hypophosphatemia and intradialytic hypotension. Rather than viewing intermittent hemodialysis and continuous renal replacement therapy as competing modalities, clinicians should select the approach that best aligns with the patient's immediate hemodynamic status and the specific goal of the intervention.