<prompt> Longest acting local anaesthetic is: March 2013 e, hProcaineLignocaineBupivacaineAll of the above  <response>: Ans. C i.e. Bupivacaine Bupivacaine Amide with duration of action more than 2 hours, CI for: Biers blockIntravenous regional anaesthesiaIVRA It is highly cardiotoxic Cardiotoxicity is not easily reversible, Levo-bupivacaine is used by epiduralintrathecal route 