Effective analysis on disinfection of pipe system of breathing machine for reduplicated use

Abstract

Objective In comparison with effects hascd on disinfection of pipe system of breathing machine in three different kinds of methods, according to which an analysis is conducted in order to enhance the quality of disinfection of pipe system of breathing machine. Methods Reduplicated use pipe of breathing machine for 7 consecutive days shall be cleaned and disinfected with respective adoption of 5% effective chlorine cleaning disinfectant for soaking (Method A), full automatic cleaning disinfector P3 program (Method B) and full -automatic cleaning disinfector plus steam sterilizer disinfection P5 program (Method C), and samples shall be gathered before and after disinfection in order to culture bacteria and calculate the colony of bacteria. Results Before disinfection, positive rate of bacteria culture in all the samples is I00. 00%, the number of bacteria within the pipe of breathing machine exceeds 10 000 cfu/cm2, and that of humidified water in the humidifier reaches 290 000 ～ 690000 ofu/ml. After disinfection, the bacterial sterilization rate equally reaches the target, and three days later with them put in the treatment room, the bacterial positive rate in Mcthed C is zero. In comparison with Method A and Method B, the difference between them and Method C has been found to have remarkable significance (P 0. 05) . Conclusion the contamination of pipe of breathing machine and humidifier are quite serious. The preceding three disinfection methods are equally able to reach the high level disinfection;however full automatic cleaning disinfector P3 program plus steam sterilizer's disinfection P5 program can bring about the best disinfection effect for reduplicated pipe of breathing machine in ICU. Key words: Pipe system of breathing machine; Disinfection; Effect