Postoperative pain is an important problem, especially for day case surgeries. It has negative effects on patient's hemodynamics and can cause delayed ambulation resulting in prolonged duration of hospital stay and poor patient satisfaction. Multiple analgesic strategies have been proposed including NSAID, opioids, epidural analgesia. Each of them has its limitations. In this study the investigators will compare between the effect of preemptive use of paracetamol plus tramadol versus preemptive intravenous fentanyl in controlling postoperative pain
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postoperative analgesia
Timeframe: immediately postoperative (0 hour), 1 hour, 2 hours , 4 hours, 6 hours and 12 hours