Feeding Container의 세척방법에 관한 연구 = Prevention of microbial contamination inpatients with enteral feeding

다국어 초록 (Multilingual Abstract)

Background and purpose
Contamination of enteral diets may play an essential role in patients' safety. It has been shown that microbial contamination of enteral feeding container in hospital is common. Therefore, this study examined the effects of improvement of the enteral feeding protocol on contamination.
Methods
We studied 30 patients with enteral feeding admitted at the Asan Medical center between June-September 1998. Three kinds of decontamination methods were evaluated by using enteral feeding containers that can be washed and disinfected for administration. Inside walls of the container were cleaned by rinsing with tap water and detergent with brushing, plain tap water at over 70℃, and immersion in 0.1% Tego for 20 minutes. Daily samples were collected from patients' enteral feeding containers, after washing and culturing. Time consumption and costs were analyzed in the three groups. All data were analyzed with Fisher's exact test(2-tailed) using SAS software(version 6.12).
Results
Microorganisms were found in 3 out of 50 enteral feeding containers rinsed with tap water and detergent with brushing, and in 9 out of 50 enteral feeding containers rinsed with plain tap water at over 70℃. There was no evidence of contamination when the container was immersed in 0.1% Tego for 20 minutes. The results of culture show Corynebacterium spp., CNS, Bacillus spp., Microccus spp., Acinetobacter baumannii and streptococcus viridans group exist on our skin, naturally. In three kinds of methods, brushing with tap water and detergent, plain tap water at over 70℃, immersion in 0.1% Tego takes 4, 48 and 23.2 minutes. The cost of the three methods were 480, 498 and 2,330 won, respectively.
Conclusions
This study emphasizes the importance of using appropriate enteral feeding containers. Considering time consumption and cost effectiveness, this study suggests the method of rinsing with tap water and detergent with brushing as the best method. To observe the differences in attendance, the development of standardized protocol should be considered.