Postoperative pain was assessed using 0 - 10 scale at 0 , 1 , 2 , 3 and 4 postoperative hours , also the intraoperative fentanyl requirements , time to first postoperative analgesia , the total number of paracetamol doses and any extra analgesic requirements were recorded , side effects like respiratory depression , vomiting , itching , inguinal hematoma and lower limb weakness were assessed during the first 24 hours .