Effectiveness of ozonated water in the reprocessing of blood dialyzers

Abstract

Introduction: Ozone is a potent antibacterial agent. Because ozone oxidizes organic material, it directly attacks microorganisms resulting in safe, fast and economical sterilization at low temperatures. This study evaluated the effi cacy of ozonated water in the reprocessing of dialyzers obtained from a hemodialysis service in São José do Rio Preto. Methods: A total of 23 blood dialyzers were collected at the conclusion of the morning hemodialysis shift. The equipment was collected after the maximum number of reuses, with the last disinfection performed with purifi ed water (obtained by reverse osmosis and subsequent reverse ultrafi ltration). The number and species of microorganisms in the dialyzers were evaluated before and after treatment with ozonated water. The ozonation of sterile deionized water was achieved by direct contact between the water and the ozone generating equipment. Results: The mean number of microorganisms before sterilization was 1,47.10 9 colony forming units per ml (CFU/ml). After treatment with ozonated water, the number of microorganisms was 4,80.10 1 CFU/ml. Conclusion: Ozonated water is an effective decontaminant for most blood dialyzers.

Ozônio no controle microbiano em patógenos capilares

“…Além disso, alternativas estão sendo testadas, embora ainda sejam pouco utilizadas, para o uso do ozônio. Exemplos são os métodos de descontaminação que têm sido aplicados com eficácia na indústria, na higienização de alimentos (TRINDADE et al, 2012), na odontologia, no tratamento alternativo de cáries (BURKE, 2012), na medicina (MARTÍNEZ-SANCHES et al, 2012), no tratamento de água e efluentes (PISARENKO et al, 2012;WU et al, 2012) e na desinfecção de máquinas de hemodiálise (CANADA et al, 2014).…”

Ação antimicrobiana do gás ozônio em superfícies e na aeromicrobiota

“…(8) Tais métodos têm desvantagens, como o alto custo, a prática laboral de preparo, além do potencial para inalação dos vapores tóxicos pelos profissionais que atuam próximos aos produtos. (9,10) Nessa perspectiva, o ozônio é apresentado na forma triatômica do oxigênio (O 3 ) e vem sendo utilizado como elemento químico de controle de microrganismos em diversos segmentos da área da saúde, destacando-se no tratamento aos resíduos hospitalares, (11) pré-tratamento da cavidade dentária, (12) desinfecção de máquinas de hemodiálise, (13) desinfecção de salas cirúrgicas, (14) entre outros.…”

Antimicrobial activities of Balanites aegyptiaca (L.) Delile (Balanitaceae) on bacteria isolated from water well

“…Water may require treatment before drinking. The disinfection methods used conventionally include pasteurization, chlorination, filtration, UV and ozonation (Canada et al, 2014;Burch and Thomas, 1998). The difficulty for adoption of conventional water treatment technologies in developing countries is as a result of the high cost and scarcity of chemical coagulants and disinfectants.…”

“…The lack electricity in most communities in Sub-Saharan Africa makes it difficult to have water treatment technology that depends on electricity (Eze and Ananso, 2014). In addition, most of the chemical disinfectants used to ensure safe drinking water are associated with harmful effects on humans such as hemolytic anemia cancer risk, nervous system effect and liver effects (Canada et al, 2014;Rajendran et al, 2013). To meet these challenges, traditional water-purifying methods using herbs and seeds constitute one of the alternative approaches.…”