TUBOTYMPANIC TYPE OF CHRONIC OTITIS MEDIA (SAFE TYPE): BACTERIOLOGICAL PROFILE AND ANTIBIOTIC SENSITIVITY PATTERN IN A TERTIARY CARE HOSPITAL

Abstract

AIMS: The aim of this study is to evaluate the bacteriological profile of active tubotympanic chronic otitis media (safe type) and the sensitivity pattern to available antibiotics.
METHODOLOGY: Here we have conducted a prospective study in a tertiary care hospital , Bengaluru. Patients presenting with active tubotympanic COM who did not receive antibiotic  therapy in the last 20 days were included in the study. Discharge from the middle ear was collected under strict aseptic precautions with the ear swabs. The isolates were grown on blood agar and identified according to standard microbiological and biochemical methods. The antibiotic sensitivity profile of the isolates was determined by Kirby–Bauer disc diffusion method on Mueller Hinton agar.
RESULTS: Out of total 160 (100%) samples the commonest micro-organism isolated was Staphylococcus aureus 60 (37.5%) followed by Pseudomonas aeruginosa 30 (18.75%). Staphylococcus aureus was highly sensitive to linezolid and vancomycin followed by ciprofloxacin. Pseudomonas aeruginosa was highly sensitive to polymyxin B followed by meropenem, cefoperazone plus sulbactam, and ciprofloxacin.
CONCLUSION: The present study indicates that due to widespread use of antibiotics there can be a variation in the bacterial aetiologies of COM and their sensitivity pattern. So we have to be careful while conducting periodic evaluation of microbiological pattern and antibiotic sensitivity of COM.