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Original Article

J Liaquat Uni Med Health Sci. 2014; 13(3): 116-119

Microbiological Spectrum in Tubotympanic Type of Chronic Suppurative Otitis Media

Arsalan Ahmed Shaikh, Muhammad Rafique, Farhan Ahmed Shaikh.

OBJECTIVE: The objective of this study was to determine the local pattern of bacterial involvement
in tubotympanic type of Chronic Suppurative Otitis Media.
STUDY DESIGN: Descriptive, Cross sectional study.
SETTING & DURATION: Department of ENT, Liaquat University Hospital Hyderabad. Two years
from January 2012 to December 2013.
METHODOLOGY: A total of 150 cases presenting with ear discharge for last six months were
included in this study, irrespective of age and gender. Operated cases and disease of external
ear were excluded from this study. Ear discharge sample (Pus Swab) was taken from deeper
part of external auditory canal with sterile cotton swab on stick and sent for bacterial culture
and sensitivity to the diagnostic & research laboratory. Statistical analysis carried out using
SPSS 16.
RESULTS: This study includes 150 patients of Chronic Suppurative otitis media. Males outnumbered
females (M: F = 1.4:1). Result of swab sensitivity for aerobic organism showed
growth of single organism in 65%; while 25% showed mixed growth and 10% did not grow any
organism. Pseudomonas aeruginosa(42%) was the commonest organism isolated, followed by
staphylococcus aureus(24%), less common organism isolated includes Proteus mirabilis 8.7%,
Klebsiella pneumonia 6.7%, E. Coli 5.3% and Coagulase negative Staphylococci 3.3%.Sensitivity
of P. aeruginosa was good to Imipenem (97%), followed by ceftazidime (95%), ciprofloxacin
(90%) and tobramycin (90%).
CONCLUSION: It is concluded that gram negative aerobic bacteria especially pseudomonas
aeruginosa is the most common isolate organism significantly associated with tubotympanic
type of CSOM followed by Staphylococcus aureus. Periodic monitoring of the microbiological
profile along with their sensitivity pattern is essential for formulating an effective antibiotic policy
for CSOM.

Key words: CSOM, Antimicrobial, Tubotympanic, Pseudomonasaeruginosa

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