Tariq Zahid, Zeba Ahmed, Zehra Aqeel.
Microbiology of chronic suppurative otitis media (CSOM) in tertiary care setup, Civil Hospital Karachi, Pakistan.
Pak J Surg Jan ;32(3):176-80.

Objective: the aim of this study is to identify the most common bacterial isolates causing CSOM in our setup to help guide the effective management of the disease. Background: Chronic Suppurative Otitis Media is one of the most common infection and a major health problem in developing countries like Pakistan which leads to serious complications if not treated properly. Its poor response to routine treatment and emergence of resistance strains were the factors responsible for undertaking this study. Materials and Methods: Total 100 patients were included in the study with unilateral or bilateral discharge for more than 3 months attending ENT out patient department, civil hospital Karachi from December 2015 to May 2016. Samples were taken by using sterile swabs and were cultured on aerobic media and their drug susceptibility was tested according to the standard protocol by using Kirby bauer disc diffusion method. Results:Overall microbiology of 100 samples was studied. Mono microbial growth was present in all 95 samples and five were sterile. Pseudomonas aeruginosa (38%) was the most common bacterial isolate, followed by staphylococcus (28%), Proteus mirabilis (21%), E coli, (3%), Klebsiella (3%) and Candida (2%). Among Staphylococcus aureus, 12 cases were Methicillin resistant (MRSA). Conclusion: Knowledge of the local micro organism patt ern and their antibiotic sensitivity is essential for the early, effective and cost saving treatment of CSOM and to prevent the complications and development of antibiotic resistance.

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