results in general 438 urine isolates were obtained. e. coli was the most frequently occurring pathogen (54.80%), followed by klebsiella pneumoniae (16.0%), coagulase negative staphylococci (11.2%), enterobacter spp. (9.6%), proteus spp. 1.4% and p. aeruginosa (1.4%). resistance rates of e. coli isolates were 85.9% to co-trimoxazole, 80.0% to penicillin, 77.0% to ampicillin, 68.0% to chloramphe...

to prevent post cholecystectomy infection, the most common microorganisms causing it and their antibacterial susceptibility pattern should be determined. therefore, the aim of the present study was to determine the exact incidence and nature of the microbial flora in the bile of the patients with cholelithiasis and chronic cholecystitis as well as their antibiotic sensitivity pattern. in this s...

background bloodstream infection (bsi) is an important cause of mortality and morbidity and among the most common health-care associated infections. in this study we described the frequency of occurrence and antimicrobial susceptibility patterns of nosocomial and community-acquired bsi isolates from a teaching hospital in tehran, iran. patients and methods this cross-sectional study was conduct...

background ventilator- associated pneumonia (vap) continues to complicate the course of 8-28 % patients receiving mechanical ventilation. the mortality rate for vap is high, ranges from 24-50% and can reach 76% in some specific settings or when lung infection is caused by high risk pathogens. the etiologic agents widely differ according to the population of patients in an intensive care unit, d...

background and objectives: methicillin resistant staphylococcus aureus (mrsa) is a major nosocomial pathogen causing significant morbidity and mortality. the aim of this study was to evaluate in vitro activities of different antibiotics against methicillin resistant staphylococcus aureus. materials and method: the study was conducted over a period of one year (january 2009 - december 2009) in t...

background nosocomial infections are generally occurring 72 hours after admittance and are not present or incubating prior to admittance. the most common nosocomial infection is urinary tract infection (uti). scanty data are available regarding the nosocomial infections in iranian teaching hospitals. the aim of the present study was to determine the frequency of symptomatic nosocomial uti, iden...

tigecycline is a new glycylcycline antibiotic structurally similar to minocycline antibiotic. it has broad spectrum activity, including staphylococcus aureus infections. this is the first study that evaluated the activity of tigecycline against staphylococcus aureus isolated from biological samples in iran. in vitro activity of tigecycline against 160 staphylococcus aureus including 99 methicil...

background diarrhea is the most frequent health problem among children in developing countries. defining the etiology of acute diarrhea is critical to disease therapy and prevention. some anaerobic bacteria such as enterotoxigenic bacteroides fragilis (etbf) strains cause diarrheal disease by production of enterotoxin in children less than 5 years old. objectives this study aimed to evaluate th...

materials and methods one hundred ssis specimens were obtained by needle aspiration from purulent material in depth of infected site. these specimens were cultured and incubated in both aerobic and anaerobic condition. for detection of antibiotic susceptibility pattern in aerobic and anaerobic bacteria, we used disk diffusion, agar dilution, and e-test methods. results a total of 194 bacterial ...