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Lipid rescue

Lipid rescue is a term that has been coined to describe the use of intravenous lipid emulsion to treat severe local anaesthetic toxicity.

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To date, Intralipid, a commonly available intravenous lipid emulsion is the only such emulsion to be shown to be effective in this way.

This is supported by animal evidence^[1]^[2] and human case reports of successful use in this way.^[3]^[4] In the UK, efforts have been made to publicise this use more widely^[5] and lipid rescue has now been officially promoted as a treatment by the Association of Anaesthetists of Great Britain and Ireland.^[6] There is now one published case report of successful treatment of refractory cardiac arrest in bupropion and lamotrigine overdose using lipid emulsion.^[7]

References

^ Weinberg GL, VadeBoncouer T, Ramaraju GA, Garcia-Amaro MF, Cwik MJ. Pretreatment or resuscitation with a lipid infusion shifts the dose-response to bupivacaine-induced asystole in rats. Anesthesiology 1998; 88: 1071-5.
^ Weinberg G, Ripper R, Feinstein DL, Hoffman W. Lipid emulsion infusion rescues dogs from bupivacaine-induced cardiac toxicity. Regional Anesthesia and Pain Medicine 2003; 28: 198-202..
^ Rosenblatt MA, Abel M, Fischer GW, Itzkovich CJ, Eisenkraft JB. Successful Use of a 20% lipid emulsion to resuscitate a patient after a presumed bupivacaine-related cardiac arrest. Anesthesiology 2006;105:217-8. PMID 16810015
^ Litz, RJ, Popp M, Stehr S N, Koch T. Successful resuscitation of a patient with ropivacaine-induced asystole after axillary plexus block using lipid infusion. Anaesthesia 2006;61:800-1.
^ Picard J, Meek T. Lipid emulsion to treat overdose of local anaesthetic: the gift of the glob. Anaesthesia 2006;61:107-9. PMID 16430560
^ http://www.aagbi.org/publications/guidelines/docs/latoxicity07.pdf
^ Sirianni AJ, Osterhoudt KC, Calello DP, et al. Use of lipid emulsion in the resuscitation of a patient with prolonged cardiovascular collapse after overdose of bupropion and lamotrigine. Ann Emerg Med 2007. doi:10.1016/j.annemergmed.2007.06.004. PMID 17766009.