When should lipid emulsion therapy be started in LAST management?

When should lipid emulsion therapy be started in LAST management?

• A. After stopping injection and ensuring airway; start lipid emulsion per protocol
• B. Before stopping injection
• C. Only if seizures persist after benzodiazepines
• D. Never used

Answer: (A)

In LAST management, lipid emulsion therapy is started as part of the resuscitation once LAST is suspected, but only after you have stopped the local anesthetic administration and secured the airway. Stopping the injection prevents ongoing systemic exposure to the toxin, and airway control ensures the patient can be ventilated and oxygenated while the lipid therapy works. Lipid emulsion acts as a “lipid sink,” helping to sequester the lipophilic local anesthetic and support cardiac and cerebral function, so it’s important to initiate it promptly and according to the established protocol rather than delaying it. Starting lipid emulsion therapy before stopping the injection would allow continued absorption of the toxin, worsening toxicity. Waiting to treat only if seizures persist would delay a critical, life-saving intervention, and saying it is never used is incorrect because lipid emulsion is a recognized rescue therapy for LAST.

In LAST management, lipid emulsion therapy is started as part of the resuscitation once LAST is suspected, but only after you have stopped the local anesthetic administration and secured the airway. Stopping the injection prevents ongoing systemic exposure to the toxin, and airway control ensures the patient can be ventilated and oxygenated while the lipid therapy works. Lipid emulsion acts as a “lipid sink,” helping to sequester the lipophilic local anesthetic and support cardiac and cerebral function, so it’s important to initiate it promptly and according to the established protocol rather than delaying it.

Starting lipid emulsion therapy before stopping the injection would allow continued absorption of the toxin, worsening toxicity. Waiting to treat only if seizures persist would delay a critical, life-saving intervention, and saying it is never used is incorrect because lipid emulsion is a recognized rescue therapy for LAST.