Category: Toxicology
Keywords: Salicylate toxicity, cerebral glucopenia, sodium bicarbonate, hemodialysis (PubMed Search)
Posted: 5/6/2026 by Kathy Prybys, MD
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Bottom Line: Multiple modalities of intervention may be needed to combat various aspects of salicylate toxicity. These include gastric decontamination, fluid hydration, dextrose admiinistration, aggressive serum alkalinization, establishment of normokalemia and hemodialysis. Intubation and chemical restraint should be avoided if possible.
Gastric decontamination: is recommended in those with acute toxicity if there are no contraindications (e.g., inability to protect the airway or refractory vomiting) as salicylate GI pill concretions can occur. Activated charcoal, 1 g/kg orally up to 100 g, is recommended. Salicylates can form gastric bezoars and cause delayed peak levels and toxicity.
Fluid resuscitation: should be addressed early in treatment course as patients can be volume depleted from multiple sources of fluid loss as much as 2-4 liters which worsens toxicity. D5W with 3 amps of sodium bicarbonate is the preferred fluid to treat volume depletion, hypoglycemia, and acidosis.
Dextrose: Hyperglycemia may present early due to increased cortisol levels, but hypoglycemia can follow and is common as oxidative phosphorylation is impaired and even with normal serum glucose levels cerebral glucopenia. A trial of IV dextrose bolus (0.5-1 g/kg) and/or infusion is recommended with mild encephalopathy
Aggressive serum alkalinization: is integral to management. This typically includes a bolus of 1-2 mEq/kg of hypertonic sodium bicarbonate followed by an infusion of isotonic sodium bicarbonate (150 mEq added to 1 L of 5% dextrose in water). Serum pH adjustment to a goal of 7.50-7.55 will decrease the volume of distribution of salicylate: salicylate will shift out of the tissues and into the serum. Urinary alkalinization aimed to achieve a urine pH >7.5 is a secondary goal. Frequent serial salicylate levels and blood gas determinations (2-4 hours) are necessary and should be correlated with clinical manifestations.
Normokalemia: is important as urinary alkalinization cannot be achieved if hypokalemia is present. Initial supplementation of potassium (40-60 mEq), addition of potassium (40-60 mEq) to the bicarbonate infusion, and additional administrations in response to therapy and level monitoring is recommended.
Hemodialysis: is necessary and lifesaving in cases with severely high serum salicylate concentrations, refractory acidemia or severe electrolyte disturbance, cerebral edema, altered mental status, renal failure, hypoxia from pulmonary edema, standard therapies not producing an adequate response, and specific serum concentrations. Early consultation with nephrology can expedite treatment.
Intubation or any chemical restraint should be avoided: as sedation and paralysis may result in further decrease in pH, due to hypercarbia from hypoventilation. This results in shifting salicylate to it’s uncharged state which can easily pass into tissues, further worsening toxicity and CNS and myocardial dysfunction. Non-invasive ventilation, such as a high-flow nasal cannula, may reduce the work of breathing. If intubation is necessary hyperventilation to reduce CO2 and bolus of intravenous bicarbonate
Salicylate Toxicity. Palmer B, Clegg D. New Egland Journal of Medicine. 2020;382(26). 2544-2555. DOI: 10.1056/NEJMra2010852
Hospitalizations for acute salicylate intoxication in the United States. Thongprayoon C, Petnak T, Kaewput W, et al. J Clin Med. 2020;9:2638. doi: 10.3390/jcm9082638.
Acute Salicylate Toxicity: A Narrative Review for Emergency Clinicians. Sidlak AM, Spadaro A, et.al, Cureus. 2025 Sep 2;17(9): e91505. doi: 10.7759/cureus.91505
