Empirical antimicrobial therapy based on active surveillance cultures in ICU patients

• Autor(a) principal: Ramos Silva, Alice
• Data de Publicação: 2023
• Outros Autores: Nagem Lopes, Luis Phillipe, Fernandez-Llimos, Fernando, Costa Lima , Elisangela
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Ciências em Saúde
• Texto Completo: https://portalrcs.hcitajuba.org.br/index.php/rcsfmit_zero/article/view/1379
• topic: Intensive Care Units; Mass screening; Evidence-Based Pharmacy Practice; Pharmaceutical Services; Unidades de Terapia Intensiva; Programas de Rastreamento; Prática Farmacêutica Baseada em Evidências; Assistência farmacêutica

Objective: To assess the predictive value of prior carbapenem-resistant Acinetobacter baumannii (CRAB) and Pseudomonas aeruginosa (CRPA) colonization established in surveillance cultures for subsequent infection by these pathogens in ICU patients. Methods: A cohort study was performed with patients admitted to the intensive care unit for at least 48 h. Negative and positive predictive values, sensitivity, and specificity of surveillance cultures in CRAB and CRPA were measured. Results: 693 infected patients were included. Patients previously colonized by CRAB and CRPA were more likely to be infected by these pathogens: adjusted OR: 10.34 (6.58 - 16.45; p < 0.001) and 2.30 (3.88 - 10.26; p < 0.001), respectively. We found high negative predictive values of surveillance cultures for CRAB (87.18%) and CRPA (88.30%) and high specificity 91.96% and 90.13%, respectively. Conclusions: Patients not colonized by CRAB and CRPA were less prone to infection by these pathogens. These findings may contribute to the choice of empirical antimicrobial therapy and discourage the prescription of antibiotics against these pathogens in patients without previous colonization.