Prevailing Antibiotic Resistance Patterns in Hospitalized Patients with Urinary Tract Infections in a Vietnamese Teaching Hospital (2014 – 2021)
Abstract
Purpose In a Vietnamese teaching hospital, this study examined the prevalence and patterns of antimicrobial resistance (AMR) of common bacteria isolated from hospitalized patients with urinary tract infections (UTIs) between 2014 and 2021. Methods From 4060 urine samples collected, common pathogens were isolated using quantitative culture on brilliance UTI Clarity agar and blood agar. Bacterial identification, antimicrobial susceptibility testing, and multidrug resistance (MDR) classification followed standardized techniques. Bacteria with a frequency of less than 2% were excluded. Statistical analysis was performed using R software, with the chi-square test applied and significance set at p < 0.05. Results Of 4060 urine samples collected, 892 (22.0%) had positive results for common infections. Gram-negative bacteria predominated (591/892; 66.3%), with Escherichia coli being the most prevalent (336/892; 37.7%). Enterococcus spp. (152/892; 17.0%) was the leading Gram-positive pathogen. Some antibiotics had significant resistance rates, especially in Gram-negative bacteria, with ampicillin having the greatest resistance rate (92.8%). Carbapenems and nitrofurantoin remained generally effective. Among Gram-positive bacteria, high resistance was seen for macrolides ranging from 85.5% (azithromycin) to 89.8% (erythromycin), and for tetracyclines, ranging from 0% (teicoplanin) to 85.2% (tetracycline). There was no resistance to tigecycline and teicoplanin, indicating their…
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