术后患者自控镇痛（PCA）的临床应用日益广泛，而镇痛药物单次剂量的选择是PCA治疗成功的关键。我院自1997年开始应用PCA技术，取得一定效果。本研究观察了三种不同单次剂量的呢替院用于PCA治疗的临床效果，报告如下。1资料和方法1．1一般资料选择各种手术患者90例，其中男47例 Postoperative patient controlled analgesia (PCA) clinical application of increasingly widespread, and a single dose of analgesic drugs is the key to the success of PCA treatment. Our hospital since 1997, the application of PCA technology, achieved some results. This study looked at the clinical efficacy of three different single-dose nystatin for PCA treatment, the report is as follows. 1 Materials and Methods 1.1 General Information Select a variety of surgical patients 90 cases, 47 males