To explore the effect of PDCA cycle on air disinfection quality and postoperative infection in operating room, and to provide reference for the prevention and control of nosocomial infection in operating room.

A total of 920 patients who underwent surgery in the operating room of Henan Provincial People's Hospital from June 2016 to June 2017 were selected and divided into the control group ( from June to December 2016, 486 cases) and the observation group ( from January to June 2017, 434 cases) according to the time sequence of PDCA implementation in the operating room.The control group was administered infection control management measures according to routine nosocomial infection and operating room related systems, while the observation group was administered PDCA cycle management. The air quality in the operating room was detected 10 minutes before, 30 minutes during and after each operation, and the incidence of postoperative nosocomial infection was observed.

There was no significant difference in the number of preoperative air bacterial colonies between the two groups(P>0.05). The number of air bacterial colonies in the operating room of the observation group was (20.55±3.34) cfu/m³and (27.46±5.39) cfu/m³ at 30 minutes and at the end of the operation, which were significantly lower than that in the control group (24.56±4.26)cfu/m³ and (36.55±6.57) cfu/m³. And the differences were statistically significant (P<0.05). Nosocomial infection occurred in 10 cases in the observation group and 39 cases in the control group, and the difference was statistically significant (P<0.05). The infection rates of respiratory tract infection, urinary tract infection and incision were 1.15%, 0.69% and 0.46% in the observation group, and 3.09%, 2.47% and 2.06% in the control group, respectively. The infection rates in the observation group were lower than those in the control group, and the difference was statistically significant (P<0.05).13 strains of pathogenic bacteria were cultured from patients with nosocomial infection in the observation group, including 5 strains of gram-negative bacteria and 8 strains of gram-positive bacteria, while 45 strains of pathogenic bacteria were cultured from patients with nosocomial infection in the control group, including 37 strains of gram-negative bacteria and 8 strains of gram-positive bacteria. There was no statistical significance in the distribution of pathogenic bacteria (P>0.05).

PDCA circulation management method is helpful to improve the air quality of operating room and reduce the incidence of postoperative nosocomial infection.

PDCA circulation; Air quality; Postoperative infection