Recommended Dose of Intravenous Sodium Bicarbonate Push in Adults
For adults requiring an intravenous bicarbonate push, administer 1-2 mEq/kg (typically 50-100 mEq or one to two 50 mL vials) given slowly. 1, 2
Dosing Algorithm
Initial Bolus Dose
- Standard dose: 1-2 mEq/kg IV/IO given slowly 1
- Practical equivalent: 50-100 mEq (one to two 50 mL vials of 8.4% solution) 2
- Cardiac arrest: May give rapidly initially, then 50 mEq every 5-10 minutes as needed 2
Administration Rate
- Non-emergent: Give slowly over several minutes to avoid complications
- Cardiac arrest: Rapid bolus acceptable initially, though caution advised with very rapid infusion of large quantities 2
Specific Clinical Scenarios
Sodium Channel Blocker Poisoning (e.g., TCA overdose)
- Initial bolus: 50-150 mEq (1-3 mEq/kg) 3, 4
- Target pH: 7.45-7.55 5, 3
- May follow with continuous infusion of 150 mEq/L solution 5
Hyperkalemia
- 50-100 mEq IV push to drive potassium intracellularly 6
Metabolic Acidosis (Non-arrest)
- 2-5 mEq/kg over 4-8 hours, not as rapid push 2
- Titrate based on arterial blood gas results
Critical Safety Parameters
Target Endpoints (Do NOT Exceed)
- Serum pH: Do not exceed 7.55 3, 4
- Serum sodium: Do not exceed 155 mEq/L 3
- Avoid complete correction of base deficit in first 24 hours 2
Important Caveats
- Routine use NOT recommended in cardiac arrest (Class III) unless specific indications present 1
- Effective ventilation must be established first—bicarbonate produces CO2 that requires elimination 5, 1
- Do not mix with vasoactive amines or calcium 5
- Monitor for hypernatremia, alkalosis, hypokalemia, and hyperosmolarity 3, 4, 2
Specific Indications for Use
Bicarbonate is beneficial in:
- Preexisting metabolic acidosis 1
- Hyperkalemia 5, 1
- Sodium channel blocker overdose (TCA, cocaine) 1, 3, 4
The evidence strongly supports that bicarbonate therapy should be guided by arterial blood gas measurements whenever possible rather than empiric dosing 1, 2, and providers should monitor pH and sodium levels closely to avoid iatrogenic alkalosis and hypernatremia.