膀胱镜检前预防性应用抗生素的多中心临床研究

目的:探讨膀胱镜检查前预防性应用抗生素的临床价值。方法:采用多中心前瞻性临床研究的方法,选取2012年9月~2013年10月中段尿标本培养阴性的患者357例,随机分为两组。A组177例,为预防性应用抗生素组,检查前30~60分钟口服左氧氟沙星500mg;B组180例,为对照组,检查前30~60分钟口服安慰剂。比较膀胱镜检查后两组患者尿路感染的发生率。结果:A组患者尿路感染发生率为1.1%;B组患者尿路感染发生率为3.9%,两组比较差异无统计学意义(P=0.096)。结论:无高危因素存在时,预防性应用抗生素并不能降低膀胱镜检查后尿路感染的发生率。

Multi-center clinical trial of antibiotic prophylaxis for patients before cystoscopy

Objective：To investigate the clinical values of antibiotic prophylaxis for patients before cystoscopy. Method： A prospective multi-center clinical trial was taken in 357 patients whose results of mid-stream urine cul- ture were negative from September 2012 to October 2013. The enrolled patients were randomly divided into two groups including group A （177 cases） who received oral antibiotic prophylaxis with a single 500 mg dose of levo- floxacin 30-60 minutes before cystoscopy and group B （180 cases） who were given placebo 30--60 minutes before cystoscopy. The statistical analysis was performed using a Chi-Square test in order to evaluate the differences be- tween two groups in the incidence of urinary tract infection （UTI）. Result：The incidence of UTI in group A was 1.1% while 3.9% was in group B. No statistically significant difference （P=0. 096） was shown between these two groups. Conclusion： Administration of antibiotics before cystoscopy is not the key to preventing the occurrence of UTI if there is no risk factors.