Bacteriological pattern of urinary tract infection in men with symptomatic benign prostatic hyperplasia at a tertiary hospital in Nigeria

Abstract

Introduction/Background: Benign Prostatic Hyperplasia (BPH) is characterized by narrowing of the prostatic urethra with resultant difficulty in passing urine, stasis, and a predisposition to urinary tract infection. The objective of this study is to identify the prevalence of urinary tract infections, common organisms isolated, their antimicrobial sensitivity pattern, and the relationship of co-morbidities with urinary tract infection in this population. Materials and methods: All patients who presented to our urology team with bladder outlet obstruction secondary to benign prostatic hyperplasia between January 2020 and January 2021 were included. Information on age, occupation, co-morbid conditions, urine microscopy, culture, and sensitivity patterns were obtained and analyzed using SPSS version 25. Midstream urine samples were collected from 172 BPH patients. Microscopy, culture, and antibiotic susceptibility tests were carried out. Results: From our study, the prevalence of bacteriuria was 67.9% with the 65-74 and 45-54 age groups having the highest and the least prevalence of bacteriuria (88.9% and 33.3% respectively). The most common organisms cultured from their urine were Pseudomonas (17.9%), E. coli (14.3%), Coliforms (10.7%), and Klebsiella (10.7%). Sensitivity patterns of these microorganisms revealed the highest sensitivity to the fluoroquinolones (25.9%) followed by Nitrofurantoin (14.8%) and Ceftriaxone and Cefoxitin (7.4%). The least sensitivity was to Augmentin and Gentamycin. Conclusion: Bacteriuria is common in patients with BPH. Pseudomonas spp was the commonest isolated organism in our study and most isolated organisms were susceptible to the fluoroquinolones.