It’s Possible to Predict a Decreased Bactericidal Effect of Biocides, through Antibiotic Resistance in ICU: Study Using a Large Sample of Bacteria and Multivariate Analysis

• 作者: Irene Herruzo Maria Jose Vizcaino Rafael Herruzo
• 来源期刊: 传染病进展(英文)
• 学科: 医学
• 关键词: Predicted Bactericidal-Effect Disinfectants/Antiseptics ANTIBIOTIC-RESISTANCE
• 年，卷（期）: 2015,（2）
• 页码范围: 73-80
• 页数: 8页
• 分类号: R73

摘要

Objective: To determine whether there was any association between resistance to antibiotics and decreased susceptibility to antiseptics and disinfectants and their importance in clinical practice. Methods: We studied a large number of microorganisms isolated from ICU patients (high percentage of cases of antibiotic resistance). The antibiogram (Kirby-Bauer) was determined and, in parallel, the bactericidal effect was assessed by two methods, according to the product used: 1) Effect on rough material (endodontic files) in 10 min, using five disinfectants;2) Effect on a skin equivalent (sterile cotton cloth) in 30 sec, for two alcohol solutions. A predictive equation of the bactericidal effects versus microorganisms’ antibiogram was obtained by multivariate methods. Results:?Bactericidal efficacy was very similar for all the products with the exception of 1% povidone-iodine. Within each product there were no significant differences between the three groups of microorganisms: “Enterobacteria”, “Non Fermentative Gram Negative Bacteria” and “cocci”. Multivariate study only obtained one significant equation: 1% chlorhexidine resistance was directly correlated with aztreonam resistance (OR = 2.16), while resistance to imipenem and to phosphomycin acted as protection factors (OR < 1). Conclusion: There is no necessary to change the indications for antiseptics or disinfectants in ICUs, except if aztreonam resistance is high. In which caseis better to use greater concentration than 1% of Chlorhexidine.