Methods: the general situation of PIVAS of the First Peoples Hospital of Shanghai was introduced, and some problems and faults in medical orders were investigated.
方法：介绍上海交通大学附属第一人民医院静脉药物配置中心的工作概况，分析不合理的处方和工作中遇到的问题。
The judgment of faults in the medical activity depends upon the correct acknowledgement of faults in the medical activity.
医疗行为过错的判定依赖于对医疗行为过错的正确认识。
This paper introduces the principle and usual faults of PTSI medical oxygen generator with the block diagram.
结合方框图介绍了PTSI型制氧机原理及常见故障。
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