Bacteriological assessment of resistant effusional otitis media discharge among the 2-16 year-old children admitted to Matini hospital in Kashan, 2011-2013

Effusional otitis media (EOM) is a common childhood disease, which can affect the hearing development. Considering the numerous theories on the involvement of bacterial factors and the contradictory data on the prevalence of the culture-positive EOM, this study aimed to evaluate the bacteriological examination of the discharge in resistant EOM in patients (age: 2-16 years) and to study the type of probable pathogens and the rate of their resistance to antibiotics. This cross-sectional study was performed on 90 patients with resistant EOM admitted to Matini hospital, Kashan, for ventilation tube insertion. After identification of the samples, the antibiogram test (according to CLSI standards) was performed. The bacteriological assessment of 90 patients, using the disk diffusion method, indicated that 52.2% of isolates were positive and 47.8% negative. Streptococcus pneumoniae had the highest sensitivity to ciprofloxacin (100%) followed by Erythromycine (66.7%). All isolates were resistant to Cotrimoxazole (100%). Moreover, the highest antibiotic resistance in patients with EOM was seen against the ampicillin (82.98%) followed by amoxicillin (78.72%). The most sensitive antibiotics in the antibiogram test were ciprofloxacin with 63.83%, and vancomycin with 51.09% susceptibility. Results of the study reveal the important role of bacteria in EOM and also the antibiotic resistance in these patients. Therefore, we recommend the annual examination of the status of antibiotic resistance in patient with EOM to prevent the antibiotic resistance.