Study of Demographic Characteristics of Adult Patients with Positive Urine Culture in a General Hospital in Tehran, Iran

Urinary tract infection (UTI) is a common disease in adults that early diagnosis and proper treatment of it has high importance. This study was performed for analysis of type and antibiotics resistance of isolated bacteria from urine of adult in different sex and ages for help in choose of antibiotics in empirical therapy. Data of patients (gender, age, kind of admission and isolated bacteria) with bacterial positive urine culture during three months in 2013 at Pars Hospital, Tehran, Iran, were studied and analyzed by SPSS software. Antimicrobial susceptibility pattern of isolates to cotrimoxazole, ampicillin, ciprofloxacin, gentamicin, amikacin and nitrofurantoin, were also determined by the standard disk diffusion method according to CLSI recommendation. A total of 1123 urine isolates were collected. Studied patients were often female and outpatients (78.3% and 88.7%, respectively). Escherichia coli was the most common isolate (50%), followed by Streptococcus agalactiae (22.9%), Klebsiella spp. (8.5%), Enterococcus spp. (7.6%), Coagulase Negative Staphylococci (3.7%) and Staphylococcus aureus (2%). Statistically significant differences were seen in distribution of some bacteria regarding demographic characteristics of patients. Highest resistance rates have shown to cotrimoxazole and ampicillin (56.9% and 55%, respectively) among isolated bacteria. The results show the relationship between demographic characteristics of Iranian patients and type of isolated bacteria from urine and high resistance to common antimicrobial agents.