Actualidades en la susceptibilidad antimicrobiana de microorganismos causales de infecciones respiratorias en pacientes ambulatorios

Angulo, Gustavo Barriga; Escorza, Carlos Arumir; Mercado González, Nina Fabiola
January 2008
Revista Mexicana de Patologia Clinica;ene-mar2008, Vol. 55 Issue 1, p29
Academic Journal
Objective: To evaluate the in vitro activity of twelve antimicrobial agents against 600 bacterial strains isolated from the same number of outpatients with respiratory infections. Material and methods: A prospective study was conducted in the bacterial strains isolated from outpatients with acute respiratory infections from La Raza Medical Center (IMSS) using a microdilution method and determine minimal inhibitory concentrations 50 and 90. Results: Clarithromycin was the most active of the twelve antimicrobials evaluated, with the lowest minimal inhibitory concentrations and the lowest resistance, most of the strains show resistance to fluoroquinolones; we do not find Streptococcus pyogenes strains resistant to Clarithromycin. Streptococcus pneumoniae was the most frequent etiological agent isolated and with the highest minimal inhibitory concentration as and percents of resistance. Conclusions: Clarithromycin was the antimicrobial of first election for the treatment of active respiratory infections in outpatients.


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