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Background and Objective: Nausea and vomiting are common complications after surgery which creates spasm, hypoxia and pulmonary aspiration. This study was done to determine the effect of ondansetrone, metoclopramide associated with dexamethasone on postoperative nausea and vomiting in cholecystectomy surgery using Laparoscopic method. Methods: In this double blind clinical trial study, 100 patients with ASA class I and II undergoing laparoscopic cholecystectomy divided randomly into two groups. The patients in the first group were received metoclopramide (10mg/kg/bw) with dexamethasone (8mg/kg/bw) and the second group were received ondansetron (4mg/kg/bw) with dexamethasone (8mg/kg/bw) intravenously 5 min before the final stage of surgery. Premedication and induction of anesthesia in patients were equal 5 minutes to 4 hours after surgery, postoperative nausea and vomiting were recorded for each patient. Results: The rate of nausea in the first and the second groups were recorded 38% and 28%, respectively. The rate of vomiting in the first and the second groups were recorded 30% and 16%, respectively. These values were not significant. Conclusion: Ondansetron with dexamethasone non significantly reduced postoperative nausea and vomiting after laparoscopic cholecystectomy in comparison with metoclopramide with dexamethasone.

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Background and Objective: Control of postoperative pain is one of the most important stages in the recovery of patients after surgery. This study was done to compare the effectiveness of combined Ondansetron and Apotel on the post-operative pain after surgery of upper limb fractures.
Methods: This double blind clinical trial study was done on 50 individual (41 male and 9 female) with upper limb fractures referring to 5 Azar hospital in Gorgan northern Iran during 2017. Patients were assigned (block randomization) into control and intervention groups. After the end of operation in the recovery phase, both groups received pain PCA (Patient Controlled Analgesia). In control group, the pain pump consisted of 2 grams of Apotel and in the intervention group; the pain pump consisted of 2 grams Apotel and 8 mg of ondansetron. Visual Analogue Score (VAS) was evaluated in both groups after surgery for 24 hours. Pain score of patients compared in the 2 groups during the 3 time intervals after surgery.
Results: 4 hours after upper limb fracture surgery, the mean pain was significantly decreased in the intervention group (3.20±0.707) compared to control group (3.64±0.569) (P<0.05). 12 hours after upper limb fracture surgery The Mean pain, in the intervention group (1.88±0.927) was significantly reduced in compare to control group (2.64±1.186) (P<0.05). 24 hours after upper limb fracture surgery, The Mean pain was significantly reduced in the intervention group (1.40±0.645) in compare to control group (2.08±0.997) (P<0.05).
Conclusion: This study showed that administration of compination of Apotele and Ondansetron in post-operative pain of upper limb fractures is effective than apotele alone.