肾病综合征患者极易合并感染 ,特别在医院这种特定环境中 ,医院感染的发生率更高 ,既加重了患者的病情 ,又增加患者住院时间及经济负担。因此 ,早期预防、早期治疗能改善预后 ,减轻患者经济负担 ,有着良好的社会和经济效益。因此 ,我们采用病例对照研究方法 ,同时做非条件ｌｏ Patients with nephrotic syndrome are extremely susceptible to co-infection, especially in a particular setting such as a hospital, where the incidence of nosocomial infections is higher, which aggravates the patient’s condition and increases patient stay and financial burden. Therefore, early prevention, early treatment can improve the prognosis and reduce the financial burden on patients, has a good social and economic benefits. Therefore, we use a case-control study and do an unconditional lo at the same time