A new peracetic acid solution for disinfection of digestive endoscope

Abstract

Objective To evaluate the disinfective effect of a new peracetic acid solution for diges- tive endoscope. Methods Forty endoscopes were divided into experimental group and control group, 10 gas- troscopes and 10 enteroscopes in each group, the experimental group was disinfected with the new peracetic acid solution for 10 min, the control group was disinfected with 2% glutaral for 10 min, the disinfection effect was compared. Subsequently, 80 other endoscopes were divided into 4 groups, 10 gastroscopes and l0 enteroscopes in each group, each group was disinfected for 2 min, 3 rain, 4 min and 5 min, the disinfec- tion efficiency was evaluated. Results The disinfection rates of gastroscopes and enteroscopes in the control were 100% （10/10）and 90% （9/10）respectively. Bacteria were found in both endoscopes. In the experi- mental group, disinfection rates of both gastroseopes and enteroscopes were 100% （10/10）, and no bacteri- um was found, which was superior to the control, disinfection rates of gastroscopes of 3 min, 4 min and 5 min were all 100% （ 10/10）, which were higher than that of 2 min group （ 30% ） （ P 〈 O. 05 ）. Bacteria were found in 3 min group. Disinfection rates of 4 min and 5 min group were 100% （ 10/10）, which were higher than that of 3 min group （80%） （ P 〈 0. 05 ）. Bacteria were found in 4 min group, and 2 min group was not disinfected. Conclusion The new peraeetic acid solution is effective for clinic digestive endoscope disinfection, and is superior to 2% glutaral. Key words: Endoscopy; Disinfection ; Peroxyacetic acid; Glutaral