Antimicrobial use and incidence of multidrug-resistant Pseudomonas aeruginosa in a teaching hospital: an ecological approach Uso de antimicrobianos e incidência de Pseudomonas aeruginosa multidroga-resistente em um hospital de ensino: uma abordagem ecológica
INTRODUCTION: Multidrug-resistant Pseudomonas aeruginosa is a major threat in healthcare settings. The use of antimicrobials can influence the incidence of resistant strains by direct and indirect mechanisms. The latter can be addressed by ecological studies. METHODS: Our group attempted to analyze...
| Published in: | Revista da Sociedade Brasileira de Medicina Tropical |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Sociedade Brasileira de Medicina Tropical (SBMT)
2010
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| Subjects: | |
| Online Access: | https://doi.org/10.1590/S0037-86822010000600005 https://doaj.org/article/c285e2f4c42447e7b1e875c84b3bd6cd |
| Summary: | INTRODUCTION: Multidrug-resistant Pseudomonas aeruginosa is a major threat in healthcare settings. The use of antimicrobials can influence the incidence of resistant strains by direct and indirect mechanisms. The latter can be addressed by ecological studies. METHODS: Our group attempted to analyze the relation between the use of antipseudomonal drugs and the incidence of MDR-PA among 18 units from a 400-bed teaching hospital. The study had a retrospective, ecological design, comprising data from 2004 and 2005. Data on the use of four antimicrobials (amikacin, ciprofloxacin, ceftazidime and imipenem) were tested for correlation with the incidence of MDR-PA (defined as isolates resistant to the four antimicrobials of interest) in clinical cultures. Univariate and multivariate linear regression analyses were performed. RESULTS: Significant correlations were determined between use and resistance for all antimicrobials in the univariate analysis: amikacin (standardized correlation coefficient = 0.73, p = 0.001); ciprofloxacin (0.71, p = 0.001); ceftazidime (0.61, p = 0.007) and imipenem (0.87, p < 0.001). In multivariate analysis, only imipenem (0.67, p = 0.01) was independently related to the incidence of multidrug-resistant strains. CONCLUSIONS: These findings share similarities with those reported in individual-based observational studies, with possible implications for infection control. INTRODUÇÃO: Pseudomonas aeruginosa multirresistente é uma grande ameaça a pacientes nos serviços de saúde. O uso de antimicrobianos pode influenciar a incidência de isolados resistentes por mecanismos diretos e indiretos. Estudos ecológicos são indicados para avaliação conjunta desses mecanismos. MÉTODOS: Foi analisada a relação entre o uso de antimicrobianos antipseudomonas e a incidência de PAMR em 18 unidades de um hospital de 400 leitos. O estudo teve delineamento ecológico retrospectivo, abordando dados dos anos de 2004 e 2005. Dados sobre uso de quatro antimicrobianos (amicacina, ciprofloxaxina, ceftazidima e imipenem) ... |
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