Postoperative pain was assessed using @ - @ scale at @ , @ , @ , @ and @ 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 @ hours .