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.