Do we know the mechanism of intravenous lipid emulsion (ILE) therapy for high blood levels of local anesthetics?

Abstract

A 60-year-old man presented for arthroscopic shoulder surgery for a torn rotator cuff. His medical history was significant for coronary artery disease and hypertension. He had a myocardial infarct 8 years prior to admission followed by percutaneous transluminal coronary angioplasty. His medications included metoprolol and aspirin. His preoperative electrocardiogram (EKG) revealed a right bundle branch block and changes associated with an old anterior wall myocardial infarct. He agreed to regional anesthesia with sedation, and an interscalene block was planned.