Resistance of Pseudomonas aeruginosa to liquid disinfectants on contaminated surfaces before formation of biofilms.

摘要: A comparison was made of the effectiveness popular disinfectants (Cavicide, Cidexplus, Clorox, Exspor, Lysol, Renalin, and Wavicide) under conditions prescribed for disinfection in respective product labels on Pseudomonas aeruginosa either suspension or deposited onto surfaces metallic polymeric plastic devices. The testing also included 7 nonformulated germicidal agents (glutaraldehyde, formaldehyde, peracetic acid, hydrogen peroxide, sodium hypochlorite, phenol, cupric ascorbate) commonly used decontamination. Results showed that P. is average 300-fold more resistant when present contaminated than suspension. This increase resistance agrees with results reported studies biofilms, but unexpectedly, it precedes biofilm formation. surface to which bacteria are attached can influence disinfectants. Viable devices may require dislodging through a one-step method detection. data, obtained sensitive quantitative test, suggest less effective generally acknowledged.