My graduation paper is “ the application of sufentanil on patient controlled analgesia and the clinical study of prophylaxic effects of tropisetron on nausea and vomiting with patient controlled analgesia ” 毕业课题为“舒芬太尼在病人自控镇痛技术中的应用和托烷司琼预防病人自控镇痛技术相关恶心呕吐的临床研究” 。