Management of Oliguric Acute Kidney Injury

Immediate Initial Actions

The American Journal of Kidney Diseases recommends immediate discontinuation of nephrotoxic agents, aggressive search for infection, fluid resuscitation with isotonic crystalloids to achieve euvolemia, and avoidance of diuretics for the purpose of treating oliguria itself 1, 2, 3
Conduct a rigorous search for infection in all patients, including obtaining blood cultures, urine cultures, chest radiograph, and performing diagnostic paracentesis if ascites is present to evaluate for spontaneous bacterial peritonitis, as suggested by Clinical Gastroenterology and Hepatology 4, 3
Discontinue all nephrotoxic medications immediately unless they are absolutely essential, including NSAIDs, aminoglycosides, and ACE inhibitors/ARBs, according to the American Journal of Kidney Diseases 1, 2, 3
Hold diuretics and nonselective beta-blockers when AKI is diagnosed, as these can worsen renal perfusion, as recommended by Clinical Gastroenterology and Hepatology 4, 3
Start broad-spectrum antibiotics if infection is strongly suspected, but avoid routine prophylactic antibiotics, as suggested by Clinical Gastroenterology and Hepatology 4

Use isotonic crystalloids, such as normal saline or balanced crystalloids, as the initial fluid for volume expansion, and avoid colloids including hydroxyethyl starches, which are associated with increased AKI incidence and mortality, according to the American Journal of Kidney Diseases 1, 2, 3
Target euvolemia through careful clinical assessment, monitoring urine output, vital signs, and fluid balance daily, as recommended by Praxis Medical Insights 3
Administer albumin 1 g/kg/day for 2 consecutive days if serum creatinine shows doubling from baseline despite initial crystalloid resuscitation, as suggested by Clinical Gastroenterology and Hepatology and Praxis Medical Insights 4, 3

Do not use diuretics to treat oliguria or prevent AKI progression, despite common practice, particularly in surgical patients, as they are ineffective for treating AKI and should only be considered for managing severe fluid overload, according to the American Journal of Kidney Diseases 1, 2, 3
Avoid the following interventions as they are proven ineffective: dopamine for AKI prevention or treatment, N-acetylcysteine, and recombinant human insulin-like growth factor 1, as recommended by Kidney International and Praxis Medical Insights 6, 3

Use vasopressors in conjunction with fluids if the patient has vasomotor shock or sepsis, with norepinephrine typically being first-line, though vasopressin may be added in septic shock, as suggested by Kidney International 6
Implement protocol-based hemodynamic management in high-risk perioperative patients or those with septic shock, targeting tissue oxygenation parameters, according to Kidney International 6

Measure serum creatinine, urea, and electrolytes at least every 48 hours or more frequently in high-risk patients, as recommended by Praxis Medical Insights 3
Monitor urine output hourly and assess fluid balance meticulously to avoid both hypovolemia and fluid overload, as suggested by Clinical Gastroenterology and Hepatology 4

If serum creatinine remains >2× baseline despite volume repletion with crystalloids and albumin, initiate treatment for HRS-AKI with albumin 1 g/kg IV on day 1, then 20-40 g daily, plus vasoactive agents, as recommended by Clinical Gastroenterology and Hepatology and Praxis Medical Insights 4, 3
Consider terlipressin, if available, starting at 1 mg IV every 4-6 hours, increasing to 2 mg every 4-6 hours if creatinine doesn't decrease by ≥25% at day 3, as suggested by Clinical Gastroenterology and Hepatology 4

Initiate RRT for severe complications, including life-threatening hyperkalemia, severe metabolic acidosis, uremic complications, or refractory fluid overload, as recommended by Praxis Medical Insights 3
Continuous RRT (CRRT) is preferred in hemodynamically unstable patients and those with acute brain injury, according to Praxis Medical Insights 3

Provide 20-30 kcal/kg/day total energy intake, as recommended by Kidney International and Praxis Medical Insights 6, 3
Protein intake should be 0.8-1.0 g/kg/day in non-catabolic patients not on dialysis, increasing to 1.0-1.5 g/kg/day if on RRT, according to Kidney International and Praxis Medical Insights 6, 3
Administer nutrition preferentially via the enteral route, as suggested by Kidney International 6
Target plasma glucose 110-149 mg/dL (6.1-8.3 mmol/L) with insulin therapy in critically ill patients, as recommended by Kidney International 6