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Objective To analyze the epidemiological status and drug resistance to common antibiotics of non-fermentative bacilli in our hospital,in order to provide the guideline for reasonable use of antibiotics.Methods A total of 825 strains of non-fermentative bacilli from various clinical specimen were analyzed retrospectively.Results A total of 825 strains of non repetitive non-fermentative bacilli were isolated.The first of the three vibrionaceae were 301 strains Pseudomonas Aeruginosa accounted for 36.48％,279 strains of Acinetobacter baumannii accounted for 33.81％,a few malt raise form afterbirth fungus 245 plants accounted for 26.69％.Strains isolated from phlegm,urine and pharynx swab were 580(70.30％),105(12.73％) and 68(8.24％) respectively.Infections with non-fermentative bacilli occurred in the department of respiratory medicine,surgery and ICU were 290 (35.15％),212 (25.70％) and 125 (15.03％) respectively.The susceptibility results of antibiotics showed that the resistant rate of bactrim,Cefotaxime,and Ceftriaxone was beyond 85.00％ with Pseudomonas Aeruginosa.Acinetobacter baumannii strains of Amikacin,Aztreonam,cefotaxime resistance rate was beyond 36.00％,while beyond 95.00％strains of Pseudomonas Aeruginosa and Acinetobacter baumannii were sensitive with Imipenem and Meropenem.The resistant rate of Cefepime,Imipene,m,Meropenem,Cefotaxim-c,Aztreonam was beyond 100.00％ with Stenotrophomonas maltophilia,while which were sensitive with Minocycline.Conclusion Non-fermentative Bacilli hospital infection is the main pathogenic bacteria,and existence multiple drug resistance to antimicrobial agents.
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Objective To evaluate the in vitro antimicrobial activity of piperacillin-sulbactam against clinical isolates of non-fermentative bacilli isolated from common infections. Methods Microdilution was employed to study the antimicrobial resistance. Results A total of 770 strains were collected from 6 hospitals in Guangzhou, including Pseudomonas aeruginosa, Acinetobacter baumannii, Stenotrophomonas maltophilia , Burkholderia cepacia , Flavobacterium , and Alcaligenes. Compared with other β-lactams,piperacillin-sulbactam displayed the highest activity against all the isolates of P. aeruginosa, especially for imipenem non-sensitive isolates, with the susceptibility of 71.9% and 55.8%, respectively. Piperacillinsulbactam and cefoperazone-sulbactam kept good activity against imipenem sensitive isolates of A. baumannii,with the susceptibility of 71.0% and 73. 0%, respectively. For the strains of Burkholderia cepacia, 69% strains exhibited minimal inhibitory concentration (MIC) of ≤ 16 mg/L for piperacillin-sulbactam. For the strains of Flavobacterium, and Alcaligenes, piperacillin-sulbactam also had excellent activity, with the susceptibility of 70. 2% and 94. 4%, respectively. Conclusion Piperacillin-sulbactam exhibits good activity again non-fermentative bacilli, especial for imipenem non-sensitive isolates of P. aeruginosa.
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OBJECTIVE To investigate the clinical distribution and drug resistance of non-fermentative bacilli isolated from department of surgery so as to guide the rational use of antibiotics.METHODS VITEK-60 AMS system and Kirby-Bauer method were used to identify the pathogenic bacilli and examine the antibiotic resistance.RESULTS A total of 463 strains of nonfermentative bacteria were isolated from Jan 2002 to Dec 2004,the most common pathogen was Pseudomonas aeruginosa(55.07%),the next were Acinetobacter baumannii(20.52%) and Stenotrophomonas maltophilia(11.88%).The samples were mainly sputum(31.97%),drainage(13.39%),and wound secretion(12.31%).Isolation rate from SICU,departments of organ transplantation and burn were 28.08%,17.28% and 12.10%,respectively.P.aeruginosa,A.baumannii and S.maltophilia had high and multi-drug resistance.CONCLUSIONS Infections of respiratory tract and wound caused by non-fermentative bacilli are common in surgical department,and drug resistance is serious.The drugs should be chosen according to the results of the antimicrobial susceptibility tests.