In the ultrasound-guided TAP-Block with Dexamethasone group, dexamethasone is added to Levobupivacaine in Ultrasound-guided Tranversus Abdominis Plain Block after Laparoscopic Cholecystectomy. In the ultrasound-guided TAP-Block with saline group, saline is added to Levobupivacaine in Ultrasound-guided Tranversus Abdominis Plain Block , after Laparoscopic Cholecystectomy. In the ultrasound-guided TAP-Block with intravenously dexamethasone group, dexamethasone is intravenously injected , after Laparoscopic Cholecystectomy. After surgery the extension of postoperative analgesia, incident and rest pain were evaluate in each group.