肠外瘘并发腹腔感染的致病菌谱与耐药性分析

目的 研究肠外瘘并发腹腔感染的主要致病菌谱及致病菌对常用抗生素的耐药特点.方法 取226例肠外瘘并发腹腔感染患者的腹腔脓液进行细菌培养和抗生素药物敏感试验.结果 获取菌株520株,其中革兰阴性菌333株,革兰阳性菌180株,真菌7株.前10位的为大肠埃希菌131株,金黄色葡萄球菌62株,肠球菌59株,铜绿假单胞菌50株,肺炎克雷伯杆菌23株,鲍曼不动杆菌18株,阴沟肠杆菌17株,奇异变形杆菌15株,摩氏摩根菌15株,粪肠球菌12株.大肠埃希菌和肺炎克雷伯杆菌中表达超广谱13内酰胺酶阳性菌株分别为102株和17株.甲氧两林耐药金黄色葡萄球菌60株.结论 肠外瘘并发腹腔感染的致病菌谱以革兰阴性菌为主,超广谱β内酰胺酶阳性率较高;金黄色葡萄球菌则基本对甲氧西林耐药.

Analysis of pathogen spectra and their drug resistance in patients with enterocutaneous fistula complicated with abdominal infection

Objective To study the pathogen spectra in patients with enterocutaneous fistula complicated with abdominal infection and their resistance to antibiotics. Methods The abdominal pus was collected from 226 patients with enterocutaneous fistula complicated with abdominal infection for bacterial culture and antibiotic susceptibility test. Results A total of 520 bacterial strains were harvested, including 333 strains of gram-negative bacteria, I 80 strains of gram-positive bacteria and 7 strains of fungi. The top 10 bacteria cultured were Escherichia coli (131 strains), Staphylococcus aureus (62 strains), Enterococcus (59 strains), Pseudomonas aeruginosa (50 strains), Klebsiella pneumoniae (23 strains), Acinetobacter baumannii (18 strains), Enterobacter cloacae (17 strains), Proteus mirabilis (15 strains), Morganella morganii (15 strains) and Enterococcus faecalis (12 strains). The extended spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae were 102 and 17 strains, respectively. Methicillin-resistant Staphylococcus aureus were 60 strains. Conclusions Gram-negative bacteria were the main pathogens in patients with enterocutaneous fistula complicated with abdominal infection. The positive rate of the extended spectrum beta-lactamase is high. Most of the Staphylococcus aureus were resistant to Methicillin.