<prompt> Which of the following concentration of lignocaine is used in epidural anaesthesia?50.5024  <response>: 1-2 lignocaine with or without adrenaline is used in epidural anaesthesia. Lignocaine in the concentration of 0.5 - 1 is used for local infiltration anaesthesia. For surface application 4 lignocaine is used as a liquid or 5 as a gel. Reference: Textbook of Anaesthesia for Post Graduates By T.K Agasti, page 337 