Effectiveness of Acetic Acid, Betadine, Amphyll, Polymyxin B, Colistin, and Gentamicin Against Pseudomonas aeruginosa

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Abstract
The in vitro effectiveness of three germicides and three chemotherapeutic drugs against hospital-isolated strains of Pseudomonas aeruginosa was determined. Solutions of 1% acetic acid, 0.5% Amphyll, and 0.1% Betadine were bactericidal for six strains tested within 15 min at room temperature. Over a 3-year period at the Albany Medical Center Hospital, the percentages of strains of P. aeruginosa susceptible to polymyxin B, colistin, and gentamicin did not increase. During this 3-year period, polymyxin B and colistin were administered at the hospital but gentamicin was not.

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