4018份血培养中厌氧血培养的价值分析

Value of anaerobic blood culture in 4018 blood cultures samples

目的了解送检厌氧血培养瓶对病原菌检出率及阳性结果报告时间的影响。方法对2011年1月-2012年3月送检的4018份疑似血流感染患者的血培养结果进行统计学分析。结果同时送检需氧瓶和厌氧瓶的检出率达14.11%,高于仅送检需氧瓶的9.26%,差异有统计学意义(P<0.05);厌氧瓶中大肠埃希菌和肠球菌属的阳性结果报告时间(306、630min)明显短于需氧瓶(612、810min)(P<0.05);同时送检需氧瓶和厌氧瓶的病份中,厌氧瓶阳性而需氧瓶阴性者占2.42%,厌氧瓶培养可增加血流感染病原菌检出率达17.11%。结论增加厌氧瓶培养可以提高阳性率并缩短阳性结果报告时间,临床上要加强厌氧血培养瓶的送检。

OBJECTIVE To evaluate the clinical significance of anaerobic blood culture bottles in the detection rate of the pathogens and the time of positive reports.METHODS The blood culture was statistically analyzed for 4018 patients with suspected blood stream infections submitted from Jan 21011 to Mar 2012.RESULTS The detection rate of the aerobic bottles and anaerobic bottles submitted at the same period was 14.11%,only higher than 9.26% of the aerobic bottles,the difference was statistically significant（P〈0.05）;on detecting Escherichia coli and Enterococcus,anaerobic blood cultures bottles（306,630 min）needed significantly shorter time than did the aerobic blood bottles（612,810 min）,（P〈0.05）;2.42% of the cases only were determined positive in anaerobic blood cultures bottles while both aerobic and anaerobic bottles were obtained,the anaerobic blood cultures could increase 17.11% of the isolation rate of the pathogens causing blood stream infections.CONCLUSION To increase the anaerobic bottle blood cultures may significantly increase the isolation rate and shorten the report time,it is necessary for the hospital to intensify the submission of the anaerobic blood culture bottles.