Isolation Rate and Susceptibility of Staphylococcus aureus:Analysis of Its Alteration During Five Years / 中华医院感染学杂志

ABSTRACT

OBJECTIVE To assay retrospectively the isolation rate and susceptibility of Staphylococcus aureus(SAU) in our hospital during five years.METHODS Qualified sputa had been collected by the clinical(microbiological)(laboratory) and cultured to identify the SAU,then evaluated its susceptibility to some commonly used antibiotics in clinic.At the same time,the ratio of SAU to all the other isolated pathogenic bacteria and to the Gram-positive bacteria was calculated.The standard criteria were based on 2000 National Committee for Clinical(Laboratory) Standards of the USA.RESULTS The ratio of SAU to all isolated bacteria was 16%,and to Gram-positive ones was more than 70%.There was no obvious difference among every two isolation rate per year.The(resistance) rate to the most of commonly used antibiotics was higher than 50%,while the resistance rate to(imipenem),amikacin,and netilmicin was very low.And the vancomycin-resistant SAU was not isolated.(CONCLUSIONS) The resistance of SAU is still a serious problem and in our lab there is no vancomycin-resistant strain.