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Gurjav, Ulziijargal

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Товч нэр
Gurjav, Ulziijargal
Бүтэн нэр
Gurjav Ulziijargal
Латин нэр
Gurjav Ulziijargal
Албан тушаал
Судлаач
Харьяалал
ORCID
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    Severe health-care-associated infections and antimicrobial resistance in an Asian Surveillance Network (ACORN-HAI): a multicentre, prospective cohort study
    (2026-08)
    Mo, Yin
    ;
    Hao, Xinxin
    ;
    Ding, Ying
    ;
    Cao, Yang
    ;
    Cai, Yiying
    BACKGROUND: Antimicrobial resistance (AMR) poses a major global health threat, with health-care-associated infections contributing substantially to mortality. Attributable disease burden remains poorly quantified by relying on cross-sectional and microbiology data. We aimed to characterise AMR epidemiology and disease burden associated with ventilator-associated pneumonia and bloodstream infection in a network of hospitals in Asia. METHODS: This large-scale, prospective, multinational, multicentre cohort study consecutively enrolled patients of any age with microbiologically-confirmed ventilator-associated pneumonia, hospital-acquired bloodstream infections, or health-care-associated bloodstream infections from 41 selected hospitals capable of standardised prospective data collection in 19 Asian countries and regions. Patients with pathogens typically associated with community-acquired infection or not recognised causes of health-care-associated infection were excluded according to predefined protocol criteria, and patients were followed for 28 days. The primary outcome was 28-day mortality from infection onset. Pathogen profiles, antimicrobial prescriptions, attributable mortality, and health-related quality-of-life outcomes were analysed. FINDINGS: Between Sept 1, 2022, and Feb 28, 2025, 10 111 patients were enrolled, and after exclusions, 9496 patients were included in the final analysis. 9642 infection episodes were analysed, comprising 6597 (68·4%) bloodstream infections and 3045 (31·6%) ventilator-associated pneumonia. Of these infections, 7102 (73·7%) of 9642 infection episodes were associated with AMR bacteria, and Gram-negative bacteria were predominant (7599 [78·8%]). Crude 28-day mortality was 2674 (37·7%) of 7102 AMR infection episodes and 1900 (40·6%) of 4683 multidrug resistance infection episodes, with the highest for carbapenem-resistant Acinetobacter spp (CRA; 51·3%) and carbapenem-resistant Enterobacterales (CRE; 48·4%). AMR-attributable mortality was the highest in ventilator-associated pneumonia (16·9%, 95% CI 13·0-20·9), individuals aged 5-14 years (11·7%, 95% CI 1·6-21·8), individuals aged 15-49 years (11·2%, 95% CI 7·2-15·2), and lower-middle-income countries (10·7%, 95% CI 7·0-14·4). By pathogens, CRA and CRE had the highest attributable mortality (19·4%, 95% CI 14·1-24·7 vs 16·2%, 95% CI 12·8-19·6) and also had the poorest quality-of-life outcomes. Most carbapenem-resistant Gram-negative infections were treated with carbapenems (57·8%) or polymyxins (35·6%). INTERPRETATION: AMR bacterial bloodstream infections and ventilator-associated pneumonia were common and associated with high mortality and reduced quality of life in Asia, particularly in infections due to carbapenem-resistant Acinetobacter spp and CRE, and among children and younger adults. The widespread use of suboptimal antimicrobial regimens highlights the urgent need for equitable access to effective therapies and context-specific evidence to guide antimicrobial stewardship. FUNDING: Wellcome Trust, National University of Singapore, Yong Loo Lin School of Medicine, Duke-NUS Medical School, Nanyang Technological University (Lee Kong Chian School of Medicine), Singapore National Centre for Infectious Diseases, and Singapore Medical Research Council.
    Scopus© Citations 1
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    Scopus© Citations 14
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    High Acquisition Rate of Gram-Negative Multi-Drug Resistant Organism Colonization During Hospitalization: A Perspective from a High Endemic Setting
    (Informa UK Limited, 2021)
    Baljin, Bayaraa
    ;
    Gurjav, Ulziijargal
    ;
    Tulgaa, Khosbayar
    ;
    Baldan, Ganbaatar
    ;
    Gunchin, Batbaatar
    OBJECTIVE: The aim of the study was to compare the rate of gram-negative multi-drug resistant organism (GN-MDRO) colonization at admission and during hospitalization and to describe the strains and antibiotic resistance genes acquired during hospitalization. METHODS: Rectal swabs were collected from patients hospitalized at the National Trauma Center (NTC), Mongolia, at the time of admission and after 14 days of hospitalization as has been detailed on our previous study. GN-MDRO antibiotic resistance was determined using EUCAST standards, and resistance genes were detected using multiplex PCR. RESULTS: A total of 158 patients were screened, and baseline colonization rate at admission was 29.1% (46/158). The rate went up to 69.9% (110/158) after 14 days of hospitalization (p<0.001). Of all participants, 74 patients (46.8%) screened GN-MDRO negative at admission acquired colonization by day 14. Other 36 patients (22.8%) maintained colonization that was screened positive at both time points. Only 38 patients (24.0%) remained free of GN-MDRO during hospitalization. There was a difference in GN-MDRO acquisition between these groups. Patients who were negative at admission acquired up to 3 GN-MDRO species, and there were 10 different species isolated. Reversely, patients who were screened positive at both time points had fairly homogenous isolates; up to 5 species of Enterobacterales were identified at admission and day 14 hospitalization. Overall, Enterobacterales were the dominant colonizers (61.4%, 97/158), and all Enterobacterales were resistant to cefotaxime as CTX-M resistance was our inclusion criteria. CONCLUSION: GN-MDRO baseline colonization rate on admission was high and, alarmingly, doubled during hospitalization in the study area. Enterobacterales was the predominant colonizer and was highly resistant to 3rd generation cephalosporin. This data supports a need for an improved infection control policy including routine surveillance of the GN-MDROs and improved antibiotic stewardship program.
    Scopus© Citations 7