In vitro study of the microstructural effects of photodynamic therapy in medical supplies when used for disinfection
Carregando...
Data
Data de publicação:
2020
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
BRAZILIAN CONGRESS IN BIOMEDICAL ENGINEERING, 27th
Exportar
Resumo
Cleaning and disinfecting surfaces and materials
in health services are primary elements in infection control
measures. For thermosensitive materials, the chemical agents
used have disadvantages such as the odor of the products, which
can cause allergic reactions to patients and the nursing staff.
Photodynamic therapy (PDT) has been shown to be an effective
technique in the treatment of infections caused by different microorganisms;
however, nothing is known about the effects of
this technique on the microstructure of hospital supplies. This
in vitro study aimed to evaluate the effects of 0.2% peracetic
acid, 1% sodium hypochlorite and PDT with 0.01% methylene
blue on the composition and color changes of hospital masks
and extensions. For this purpose, 100 mask samples and 100 extension
samples were randomly distributed in 20 experimental
groups (n = 10, 10 groups for each material), in which the applied
substance was varied (sodium hypochlorite, peracetic acid
and PDT) and the number of applications (without application,
1, 2 or 3 applications). The compositional analysis was performed
by Fourier transform infrared spectroscopy, while the
color changes were evaluated using image analysis by CIElab
method evaluating the parameters L*, a*, b* and ∆E. The statistical
analysis was performed at 5% significance level. It was
observed that all agents altered the composition of the materials
in a similar way. Although all agents promoted changes in different
parameters evaluated, peracetic acid and methylene blue
alone altered the final color perceived only in extensions. It was
concluded that 0.2% peracetic acid, 1% sodium hypochlorite
and PDT alter the chemical composition of both masks and extensions,
and that such changes have a positive relationship with
the number of treatments performed. These compositional
changes may be related to the color changes promoted in both
materials by all agents tested.
Como referenciar
NAMBA, A.F.; DEL-VALLE, M.; DAGHASTANLI, N.A.; ANA, P.A. In vitro study of the microstructural effects of photodynamic therapy in medical supplies when used for disinfection. In: BRAZILIAN CONGRESS IN BIOMEDICAL ENGINEERING, 27th, October 26-30, 2020, Vitória, ES. Proceedings... Rio de Janeiro, RJ: Sociedade Brasileira de Engenharia Biomédica, 2020. p. 1705-1710. Disponível em: http://200.136.52.105/handle/123456789/31682. Acesso em: 20 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.