Anaesthesia Fastest to slowest route of absorption of local anaesthetic is? A Tracheal >Lumbar epidural > Intercostal block > Subcutaneous. B Tracheal > Intercostal block > Lumbar epidural > Subcutaneous. C Subcutaneous> Intercostal block > Lumbar epidural >Tracheal. D Lumbar epidural > Intercostal block >Tracheal > Subcutaneous. 💡 Explanation Fastest to slowest route of absorption of local anaesthetic is? ✓ Correct Answer: B. Tracheal > Intercostal block > Lumbar epidural > Subcutaneous.