Study of Bacterial Isolates and their Susceptibility Pattern in Chronic Suppurative Otitis Media

Chronic Suppurative Otitis Media (CSOM) is one of the common ear diseases which can cause many complications if not treated properly . This study was done to determine isolates causing CSOM and their antibiotic susceptibility pattern. The study was carried out from November 2014 to April 2015. Ear swabs were collected & cultured from one hundred and twenty patients with CSOM attending the ENT Out Patient Clinic in Al- Hillah Teaching hospital. The specimens were cultured The isolated organisms were identified by standard microbiological methods. The antibiotic susceptibility testing of the isolates was done using the Kirby-Bauer disc diffusion method.CSOM was less common among elderly and women. Pseudomonas aeruginosa was the most common isolated bacteria (37.5%) followed by Staphylococcus aureus (20.83%), and Streptococcus pneumoniae (16.67%).The most effective antibiotics in this study were ciprofloxacin and ceftazidime , whereas the highest resistance levels were observed for trimethoprim, carbenicillin, lincomycin and erythromycin.