High antimicrobial resistance in hospital uropathogens from Tapachula, Chiapas, Mexico
Resistance and age as factors associated with prolonged hospital stay
DOI:
https://doi.org/10.31644/RMI.V5N6.2025.A21Keywords:
Empirical Management, Epidemiological Surveillance, Extended-Spectrum Beta-Lactamases (ESBL), Pseudomonas aeruginosa, Urinary Tract Infection (UTI)Abstract
The objective of this study was to describe the antimicrobial resistance and susceptibility profiles of uropathogens isolated from hospitalized patients and to determine their association with age and length of hospital stay. An observational, descriptive, and retrospective study was conducted in a secondary-level hospital in Tapachula, Chiapas, Mexico, through the analysis of retrospective institutional data. Forty-eight records of positive urine cultures were examined. For the final resistance assessment, 36 isolates with complete bacterial identification and susceptibility profiles to 14 antibiotics were included, obtained from existing clinical records. Inferential statistics (correlation analyses) were used to establish associations. Escherichia coli was the predominant pathogen (55.6%). Aggregate resistance to cephalosporins (cefotaxime and cephalotin) and to the aminoglycoside amikacin exceeded 96% among all uropathogens analyzed. Additionally, patterns of extreme multidrug resistance were identified, with Pseudomonas aeruginosa exhibiting 100% resistance to all 14 antimicrobials tested. Statistical analysis revealed a significant association (p < 0.01) between antimicrobial resistance and longer hospital stay, as well as a positive correlation between infection and length of stay with patient age (p < 0.05). The high prevalence of antimicrobial resistance—particularly to cephalosporins and aminoglycosides—combined with factors such as age and prolonged hospitalization, underscores the urgent need to implement continuous microbiological surveillance programs and to critically update empirical therapeutic regimens for urinary tract infections (UTIs) in southern Mexico.
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