RESUMO
Objective To analyze distribution and drug resistance of pathogenic bacteria isolated from blood specimens of inpa-tients,so as to guiding the principle of clinical use of antibacterials and improve clinical efficacy.Methods The results of bacterial culture and drug sensitivity test of 2 125 blood specimens,from November 2012 to November 2014,in the Rizhao Hospital of Tradi-tional Chinese Medicine were retrospectively analyzed.Results A total of 233 strains of pathogens were isolated(the positive rate was 10.96%),including 57 strains of gram-positive coccus(accounted for 24.46%)and 1 74 strains of gram-negative bacilli(accoun-ted for 74.68%).The coagulase-negative staphylococci and Staphylococcus aureus were most common in gram-positive coccus,the detection rate of methicillin-resistant coagulase-negative staphylococci (MRCNS)and methicillin-resistant Staphylococcus aureus (MRSA)were 84.2% and 40.0%,respectively.The rate of drug resistance of coagulase-negative staphylococci and Staphylococcus aureus to penicillin,erythromycin and clindamycin were no less than 80.0%.The Escherichia coli,Klebsiella pneumoniae and Pseud-omonas aeruginosa were most common in gram-negative bacilli,the detection rate of extended spectrum beta-lactamases(ESBLs) producing Escherichia coli and Klebsiella pneumoniae were 35.85% and 28.13%,respectively.The sensitive rate of Escherichia coli and Klebsiella pneumoniae to imipenem were both 100.0%.Conclusion Gram-negative bacilli is the most common pathogen in this hospital and multidrug resistance is observed.Therefore,cultures of blood specimen should be timely submitted in order to guiding the rational antimicrobial application in clinic.
RESUMO
OBJECTIVE To discuss the constitution and drug sensitivity of pathogens that cause pulmonary infection in NICU. METHODS Sputa were collected from patients hospitalized in NICU from Mar 2006 to Mar 2007 and analyzed for distribution and drug sensitivity of pathogenic bacteria. RESULTS All 555 strains of pathogenic bacteria were isolated. The most common pathogens were Pseudomonas aeruginosa(183 strains,33.0%),Staphylococcus aureus(114 strains,20.5%) and Klebsiella pneumoniae(56 strains,10.1%). Nearly most pathogenic bacteria were multi-resistant to commonly used antibiotics. Meticillin resistant strains of S. aureus accounted for 97.4%. The percentange of fungi strains was increasing in NICU. The main isolated strains were Candida tropicalis(5.9%),C. albicans(3.8%)and C. glabrata(3.6%). And all of the fungi were sensitive to amphotericin B. fluconazole. and ketoconazole. CONCLUSIONS Pulmonary infections in NICU are mainly caused by Gram-negative bacteria with high rate of drug resistance. It can be of great importance to make drug sensitivity tests at regular intervals to guide the use of antibiotics.