Infection and drug resistance · 2025
Prevailing Antibiotic Resistance Patterns in Hospitalized Patients with Urinary Tract Infections in a Vietnamese Teaching Hospital (2014 - 2021).
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Le Hai Ha Long, Thuc Luong Cong, Ta Thang Ba, Tran Tien Viet, Hung Dinh Viet, Kien Hoang Trung, Le Minh Nhat, Luong Vu Huy, Nguyen Vinh Thi Ha, Pham Hoa Quynh, Le Hung Van, Viet Nguyen Hoang, Hoang Le Huy, Nguyen Tram Thuy, Latsavong Mixay, Le Tuan Dinh, Trong Tuan Dao, An Nguyen Van
Аннотация
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 potential efficacy against multidrug resistance (MDR) bacteria causing UTIs. MDR rates were higher in Gram-negative bacteria (64.8% versus 43.5%), with Klebsiella pneumoniae having the highest rate (78.7%).
CONCLUSION: This study underscores the urgent need for ongoing surveillance of AMR patterns in Vietnam and emphasizes the significance of efficient infection prevention methods, prudent use of antibiotics, and targeted interventions to combat antimicrobial resistance.
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 potential efficacy against multidrug resistance (MDR) bacteria causing UTIs. MDR rates were higher in Gram-negative bacteria (64.8% versus 43.5%), with Klebsiella pneumoniae having the highest rate (78.7%).
CONCLUSION: This study underscores the urgent need for ongoing surveillance of AMR patterns in Vietnam and emphasizes the significance of efficient infection prevention methods, prudent use of antibiotics, and targeted interventions to combat antimicrobial resistance.