Concentrations of lidocaine and monoethylglycylxylidide (MEGX) in lidocaine associated deaths.
Concentrations of lidocaine and MEGX were determined in a variety of tissues and other samples collected at autopsy. In 13 of the cases examined in which lidocaine was associated with death, tissue concentrations were greater than 15 mg/kg. Tissue concentrations in other patients treated with lidocaine were significantly lower.