Abstract:

Objective To explore the distribution and drug resistance of pathogen in hospitalized tumor patients and to provide reference for the clinical reasonable use of antibiotics and strengthening   the hospital infection control. Methods 6 500 clinical speciments were tested in hospitalized tumor patients from January  to December,2013. The drug susceptibilities were tested by automated microbiology system or Kirby-Bauer disk dilution method.  Drug susceptibility tests were evaluated according to CLSI standard 2012. WHONET5.6 software data were used to analyze the data. The clinical distribution and the resistance results of bacterial were analyzed retrospectively. Results A total of 2 093 strains of pathogens were isolated from 6 500 clinical speciments,among these strains，the gram-negative bacteria accounted for 55.23%,the gram-positive bacteria accounted for 11.08%,and the fungi accounted for 33.68%.  Klebsiella pneumoniae，Escherichia coli，Pseudomonas aeruginosa ranked the top three species of pathogens,accounting for 16.63%,9.60%,and 7.98%, respectively. Staphylococcus aureus,Candida albicans  ranked the first place of gram-positive bacteria and fungi, respectively.The antibiotic resistance of Escherichia coli was strong in Enterobacteriaceae,and its resistance rates to penicillins, cephalosporins,and  quinolones were more than 60%.Of the Staphylococcus,the methicillin-resistant Staphylococcus aureus(MRSA) accounted for 10.00% and the coagulase-negative Staphylococcus (MRCNS) accounted for 87.10%. There was no vancomycin resistant Staphylococcus aureus and coagulase-negative Staphylococcus detected.Enterobacteriaceae strains were found most sensitive to imipenem;gram-positive bacteria were found most sensitive to vancomycin.Conclusion The hospitalized tumor patients are susceptible to pathogens,and the  gram-negative bacteria are the predominant isolated pathogen. Etiology inspection and monitoring of antibiotics sensitivity provide experimental basis for clinical infection control and prevention.

Key words:  , neoplasms, hospitalized patients, pathogen, antibioterial drugs, resistance rates