Mojtaba Kamaliaghdam - Dept. of Pediatrics, Ayatollah Moussavi Hospital, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
Mansour Sadeghzadeh - Dept. of Pediatrics, Ayatollah Moussavi Hospital, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
Ahmad Jalilvand - Dept. of Pathology, Ayatollah Moussavi Hospital, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
Kambiz Eftekhari - Dept. of Pediatrics, School of Medicine, Bahrami Hospital, Tehran University of Medical Sciences, Tehran, Iran
Zahra Rezaei - Dept. of Pediatrics, Ayatollah Moussavi Hospital, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran

Background & Objective: Escherichia coli (E. coli) is considered to be the most common cause of urinary tract infections (UTIs) worldwide. Due to the recent rise in bacterial resistance to antibiotics and the appearance of multidrug-resistant E. coli, treatment options have been significantly limited, thus increasing the cost of treatment as well as morbidity and mortality rates, especially in developing countries. This study aimed to identify the antibiotic susceptibility patterns of E. coli for use in early empirical treatments and cultures of negative UTIs caused by previous antibiotic usage. Materials & Methods: In the present study, ۷۰۴ urine samples with a positive culture of E. coli were evaluated in terms of susceptibility to gentamycin, nitrofurantoin, ceftazidime, cefixime, meropenem, cefepime, azithromycin, ceftriaxone and ciprofloxacin using the Kirby-Bauer disc diffusion method. Data were collected based on age, sex, and hospitalization or ambulatory patient status. Data were analyzed using SPSS ۲۲.۰. Results: E. coli showed the lowest resistance to nitrofurantoin (۴.۵%) and the highest resistance to cefixime (۳۴.۹). There was a statistically significant relationship between antibiotic resistance and age, gender, and hospitalization status Conclusion: Because of the high resistance rate of E. coli to cefixime, precautions should be taken before using cefixime to treat UTIs.

Antibiotic sensitivity, Escherichia coli, Resistance, Urinary tract infections