胃肠道恶性肿瘤患者手术前、后化疗引起的恶心呕吐是治疗中最为常见的并发症，对此处理的好坏直接影响化疗的顺利进行。我科于1997年1月～1999年7月，应用西南合成制药总厂生产的盐酸恩丹西酮针剂治疗化疗中出现的恶心、呕吐等临床表现，观察结果如下。1材料与方法1．1临床资料 Gastrointestinal cancer patients before and after chemotherapy-induced nausea and vomiting is the most common complication of treatment, the quality of this treatment directly affects the smooth progress of chemotherapy. Our department from January 1997 to July 1999, application Southwest Synthetic Pharmaceutical Factory production of ondansetron hydrochloride injection in the treatment of nausea, vomiting and other clinical manifestations, the observations are as follows. 1 Materials and Methods 1.1 Clinical data