Inclusion Criteria:  age 2-12 years Elective congenital inguinal hernia repair operation under general anaesthesia. Physical Status: ASA I and II Patients after taking written and informed consent from the parents or care giver.  Exclusion Criteria:  Refusal of procedure or participation in the study by parents. Physical status: ASA III or above. Children undergoing bilateral lower abdominal surgeries. Infection at site of injection. Congenital anomaly of the spine. History of developmental delay, neurological disease, skeletal deformities. History or evidence of coagulopathy. Allergies to drugs used (Bupivacaine 0.5%)( dexmedetomidine/prcedex)