Management of Salicylate Overdose

Indications for Hemodialysis

• Hemodialysis should be initiated immediately in salicylate overdose when serum levels exceed 100 mg/dL, when there is altered mental status, or when acute respiratory distress syndrome requiring supplemental oxygen develops, regardless of salicylate concentration, as recommended by the American College of Emergency Physicians 1
• Serum salicylate concentration >100 mg/dL, regardless of symptoms, is an indication for hemodialysis, according to the American College of Emergency Physicians 1
• Altered mental status of any degree is an indication for hemodialysis, as per the American College of Emergency Physicians 1
• New hypoxemia requiring supplemental oxygen, evidence of acute respiratory distress syndrome, is an indication for hemodialysis, as recommended by the American College of Emergency Physicians 1
• Failure of standard therapy, including supportive measures and bicarbonate, is an indication for hemodialysis, according to the American College of Emergency Physicians 1
• Severe salicylate poisoning with clinical deterioration is an indication for hemodialysis, as per the American College of Emergency Physicians 1
• Serum salicylate concentration >90 mg/dL with impaired kidney function is a suggested indication for hemodialysis, according to the American College of Emergency Physicians 1
• Serum salicylate concentration >80 mg/dL with impaired kidney function is a suggested indication for hemodialysis, as recommended by the American College of Emergency Physicians 1
• Blood pH ≤7.20 is a suggested indication for hemodialysis, according to the American College of Emergency Physicians 1

Hemodialysis Modality and Settings

• Intermittent hemodialysis is the preferred modality due to its superior efficiency and ability to correct acid-base disturbances simultaneously, as recommended by the American College of Emergency Physicians 1
• High-efficiency hemodialysis with high blood flow rates (200 mL/min or higher) is recommended, according to the American College of Emergency Physicians 1
• High surface area dialyzers should be used to maximize clearance, as per the American College of Emergency Physicians 1

Alternative Therapies

• Hemoperfusion is an acceptable alternative with similar clearance rates, as recommended by the American College of Emergency Physicians 1
• Continuous renal replacement therapy is less efficient but better than no extracorporeal treatment, according to the American College of Emergency Physicians 1
• Exchange transfusion is specifically recommended for neonates, as per the American College of Emergency Physicians 1

Monitoring and Duration of Hemodialysis

• Hemodialysis should be continued until salicylate levels decrease significantly below toxic thresholds, as recommended by the American College of Emergency Physicians 1
• Reliance on standard therapy alone, including urinary alkalinization and supportive care, may be insufficient in severe cases, and delaying hemodialysis can lead to poor outcomes, according to the American College of Emergency Physicians 1