What is the role and typical dosing of intralipid therapy in LAST management?

What is the role and typical dosing of intralipid therapy in LAST management?

• A. Initial 2.0 mL/kg of 20% lipid emulsion, then 0.5 mL/kg/min
• B. Initial 0.5 mL/kg of 20% lipid emulsion, then 0.05 mL/kg/min
• C. Initial 0.1 mL/kg of lipid emulsion, then 0.25 mL/kg/min
• D. Initial 1.5 mL/kg of 20% lipid emulsion, then 0.25 mL/kg/min; repeat boluses up to 2.0 mL/kg as needed

Answer: (D)

Intralipid therapy for local anesthetic systemic toxicity serves as a lipid sink and also provides fatty acids to fuel the heart. The best regimen starts with a rapid bolus of 1.5 mL/kg of 20% lipid emulsion to quickly raise intravascular lipid levels and begin sequestering the lipophilic local anesthetic. This is followed by a continuous infusion at 0.25 mL/kg/min to maintain the lipid reservoir and support circulation while the toxin is cleared. If instability or ongoing toxicity persists, repeat boluses can be given, up to 2.0 mL/kg per bolus as needed, to reinforce the lipid sink. This combination targets rapid reversal of toxicity and stabilization of hemodynamics, which is why it aligns best with current LAST management dosing.

Intralipid therapy for local anesthetic systemic toxicity serves as a lipid sink and also provides fatty acids to fuel the heart. The best regimen starts with a rapid bolus of 1.5 mL/kg of 20% lipid emulsion to quickly raise intravascular lipid levels and begin sequestering the lipophilic local anesthetic. This is followed by a continuous infusion at 0.25 mL/kg/min to maintain the lipid reservoir and support circulation while the toxin is cleared. If instability or ongoing toxicity persists, repeat boluses can be given, up to 2.0 mL/kg per bolus as needed, to reinforce the lipid sink. This combination targets rapid reversal of toxicity and stabilization of hemodynamics, which is why it aligns best with current LAST management dosing.