Abstract: Objective To investigate and analyze the disinfection effect of high-frequency contact surfaces in bed units of patients with endotracheal intubation, so as to provide a basis for the development of environmental cleaning and disinfection. Methods The video review method was used to screen out the top 5 surfaces with the high-frequency contact surfaces in the bed units of 4 patients with endotracheal intubation. On the basis of disinfection every 12 hours for 5 consecutive days, the surfaces were sampled for bacterial cultured every 6 hours. The bacteria detection rate was used to evaluate the distribution of bacteria on the high-frequency contact surfaces and the disinfection effect at different sampling time points and time periods. Results The detection rates of bacteria on the surface of the five high-frequency contact objects were: 66.25% for the tracheal tube connector, 43.75% for the bed rail, 23.75% for the gastric tube connector, 6.25% for the syringe pump button and 2.50% for the monitor button(P<0.05), with statistics there was no statistical difference in the bacterial detection rate between different sampling time points and different working hours(P<0.05). The bacterial detection rate of 9 hours after cleaning and disinfection in different disinfection periods was significantly higher than that of 3 hours after disinfection, there was statistical difference(P<0.05). Conclusion The high-frequency contact surface of the tracheal intubation is the highest in the bronchial tube joint, the bed column and the gastric tube joint should be considered on the basis of cleaning and disinfection at intervals 12 h when developing an environmental cleaning disinfection plan, and the specific disinfection time needs further to explore.

Key words: endotracheal intubation patients, high-frequency contact surface, bacterial detection rate, cleaning and disinfection