Objective To observe the efficacy and safety of ramosetron for preventing nausea and vomiting during postoperative patient controlled intravenous analgesia(PCIA).
目的观察雷莫司琼预防术后患者自控静脉镇痛（PCIA）期间恶心呕吐的防治效果及安全性。
2
Conclusion Propofol administered for general anesthesia is effective in preventing postoperativenausea and vomiting, and can shorten the time of anesthetic recovery markedly.
结论异丙酚行全身麻醉可有效地预防术后恶心、呕吐，并可显著缩短麻醉恢复时间。
3
Objective To investigate the effects of volume expansion before induction of anaesthesia on postoperativenausea and vomiting(PONV) in patients undergoing laparoscopic operations.