The clinical distribution ,drug resistance and genotyping of bloodstream infection Staphylococcus aureus in a hospital
10.3969/j.issn.1673-4130.2017.19.014
- VernacularTitle:某院血流感染金黄色葡萄球菌临床分布特点、耐药性及基因分型研究
- Author:
Jinpei LU
1
;
Hairen CHEN
;
Yan ZHANG
;
Li ZHENG
;
Chunrong PAN
;
Yingping ZHANG
Author Information
1. 珠海市平沙医院检验科
- Keywords:
Staphylococcus aureus;
bloodstream infection;
drug resistance;
genotyping
- From:
International Journal of Laboratory Medicine
2017;38(19):2694-2696,2699
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the clinical distribution ,drug resistance and genotyping of bloodstream infection Staphylococ-cus aureus in our hospital .Methods Bacteria identification and drug sensitivity test were performed in 102 strains of Staphylococ-cus aureus isolated by automatic bacteria identification system in our hospital during January 2010 to January 2017 ,and the geno-types were determined by polymerase chain reaction (PCR) .Results Staphylococcus aureus bloodstream infection was the most common in people aged 70- <80 years old (29 .41% ) ,followed by the age of 50- <60 years old (15 .69% ) .The disease was the most common in the intensive care unit (ICU) (29 .41% ) ,followed by hemodialysis room (21 .57% ) .The drug resistance rate to penicillin was the highest (94 .12% ) ,followed by clindamycin (66 .67% ) ,and it was sensitive to vancomycin ,tigecycline ,teicoplanin and linezolid (100 .00% ) .The drug resistance rates of Methicillin-resistant Staphylococcus aureus (MRSA) to penicillin ,clindamy-cin ,erythromycin ,gentamicin ,levofloxacin ,tetracycline ,rifampicin ,ciprofloxacin and ampicillin/sulbactam were significantly higher than those of Methicillin-sensitive Staphylococcus aureus (MSSA) (P<0 .05) .The erm gene carrying rate was 100 .00% .Among MRSA ,there were 12 strains carrying ermA gene and 28 strains carrying ermA+ermC gene .Among MSSA ,there were 38 strains carrying ermB gene and 24 strains carrying ermC gene .The ermC gene accounted for 77 .27% in induced drug-resistant strains .Con-clusion Staphylococcus aureus bloodstream infection is more common in the elderly ,especially in the advanced age ,and it is more common in ICU .The detection rate of MRSA is relatively higher ,and the erm gene carrying rate of Staphylococcus aureus is high . ermA gene is common in MRSA while ermB gene is common in MSSA .MRSA is resistant to several antibiotics .It is recommended to choose vancomycin and tigecycline for antibiotic treatment .
