<prompt> Fastest to slowest route of absorption of local anaesthetic is?Tracheal Lumbar epidural Intercostal block Subcutaneous.Tracheal Intercostal block Lumbar epidural Subcutaneous.Subcutaneous Intercostal block Lumbar epidural Tracheal.Lumbar epidural Intercostal block Tracheal Subcutaneous.  <response>: According, the rate of systemic absorption is greatest with intercostal nerve blocks followed by caudal, lumbar epidural, brachial plexus block femoral and sciatic nerve blocks. Sequence of systemic absorption IV Tracheal Intercostal block Para cervical block Caudal Lumbar epidural Brachial Plexus Sciatic Subcutaneous. 