Impact of circulating wind disinfection on quality of air in burn unit

OBJECTIVE To investigate the impact of circulating wind disinfection on the air quality of burn unit during drug dressing.METHODS The experimental group and the control group were set up,the circulating wind disinfection machine was adopted to perform on-site test in the experimental group during the drug dressing;the bacterial sampling of the air in the wards was carried out before and after the drug dressing;the control group was without circulating air disinfection during drug dressing,the air sampling was as same as the experimental group did,the changes of the bacterial colonies were analyzed.RESULTS As compared with the bacterial colonies before the dressing,the difference was not statistically significant,the bacterial colonies of the experimental group after the dressing was(111.0±42.9) CFU/m3,significantly less than(997.4±220.0)CFU/m3 of the control group,the difference was statistically significant(P0.05);the bacterial colonies of the experimental group was less after the disinfection than before the disinfection,the difference was statistically significant(P0.05),the bacterial colonies of the control group was more after the dressing than before the dressing,the difference was statistically significantly(P0.05).CONCLUSION Sustained circulating wind disinfection in burn unit during the dressing will help to improve the air quality.