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Urology, Nephrology and Andrology International

Volume  6, Issue 2, July – December 2021, Pages 39-44
 

Original Article

Spectrum of Organisms and their Antibiotic Sensitivity Studied from Rectal Swabs in the Community

Arjun N1, Ramesh D2

1Assistant Professor, 2Professor, Department of Urology, Ramaiah Medical College, Bangalore 560094, Karnataka, India.

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DOI: http://dx.doi.org/10.21088/unai.2456-5016.6221.4

Abstract

Aim: To study the spectrum of organisms and their antibiotic sensitivity studied from rectal swabs in the community. Methods: A 2 years prospective study in which rectal swabs were collected from patients who fulfilled the inclusion criteria. Baseline information with a detailed written informed consent was taken from each patient. Results were characterized for identification of the organisms and antimicrobial susceptibilities. The data was tabulated for evaluation on a predesigned proforma. Results: Of 373 patients, 290 patients were male and 83 female (Mean age - 62.7 +/- 18 years). The most common organism was Escherichia coli in 76.56% of cases, Klebsiella Sp in 12.5%, Proteus Sp in 1.56% and others including Enterococcus, Pseudomonas, Staphylococcus aureus contributed to 9.37%. In the antibiotic sensitivity pattern, the sensitivity of fluoroquinolones was as low as 48.43%. Nitrofurantoin showed a higher sensitivity of 83.59 % than fluoroquinolones but similar to carbapenems (88.2%) and third generation cephalosporins (78.12%). In our study, 23 patients were planned for a TRUS guided prostate biopsy. The culture positive rate in this group was 43.47 % of which 60% of the organisms grown was Esherichia coli (p = 0.01) on sub group analysis. They showed a quinolone sensitivity of only 40% . Conclusion: With increasing antibiotic resistance and multi drug resistant organisms, we suggest the use of a culture based antibiotic for infections and trans rectal biopsy procedures. There is a change in antibiotic resistance pattern of organisms of the gut flora with rising pattern of fluoroquinolone resistance. Keywords: Antibiotic sensitivity; Biopsy; E-Coli; Prostate biopsy; Rectal swab.


Corresponding Author : Arjun N, Assistant Professor, Department of Urology, Ramaiah Medical College, Bangalore 560094, Karnataka, India.