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Abstract

Background: Chronic rhinosinusitis is defined as the inflammation of mucosa of nose and paranasal sinus for at least 12 consecutive weeks of duration. Being one of the most common health problems worldwide, its pathogenesis is not well defined and there may be multiple aetiologic factors. Bacteria, fungi or viruses may be involved in some cases but there may be cases with no identifiable pathogenic organisms. As there is emerging drug resistance management of patients is also getting troublesome. Objectives: To find out the bacteria and fungi responsible for chronic rhinosinusitis and the antimicrobial susceptibility of the isolates. Conclusion: Common organism causing chronic rhinosinusitis is Staphylococcus aureus followed by Pseudomonas aeruginosa and most sensitive antibiotics were cefixime and ciprofloxacin. Commonly used antibiotics like amoxicillin-clavulonic acid is losing effectiveness due to the emerging drug resistant bacterial strains.