The Bacteriological Characteristics And HAI In Ward In Neurological Intensive Care Unit

OBJECTIVE The purpose of the article is to analyze the bacteriological characteristicsand influencing factors in N-ICU, as well as to analyze the relationship betweenbacteriological characteristics and HAI.METHOD This study is designed to collect a periodical sample of the air condition inapplied wards which is going to dynamically monitor the distributed characteristics inbacteriology of N-ICU. Then the experimenters will opportunely adjust the air conditiondisinfection programs by evaluating the former results in different air conditions of N-ICU as well as dynamically monitoring the disinfection results.The patients who wereenrolled in a3A grade hospital were selected as the monitoring objects. The state ofbacteria and fungi around the patients’ residential environment in the wards wereobtained to monitor the objects. Meanwhile, we inspected the pathogenic types whichcaused the HAI, During May2010to December2013.RESULTS Routine monitoring of neurological intensive care unit air environmentindicates that The average number of air environment bacteria in the big ward is193.47±32.27CFU/m3. The average number of air environment bacteria in the smallward is99.72±25.28CFU/m3.Routine monitoring of neurological intensive care unitshows that the difference of overall air microbial distribution in both the big and smallwards is of no statistical significance. Infection monitoring of neurological intensive unitshows that214out of835patients suffer from nosocomial infection with an infection rateof25.62%. In the pathogens of gram the negative bacilli accounted for79.39%in whichthe pseudomonas aeruginosa accounted for27.87%. While gram positive cocci accountedfor15.22%in which the staphylococcus aureus accounted for11.71%. Also the fungiaccounted for5.39%.After multivariate analysis also showed that the number of bacteriain the air exceeded the pillow surface bacteria, urinary tract catheterization, deep veincatheterization and other factors are caused by nosocomial infection risk factors.CONCLUSIONS Bacteria amount in N-ICU air environment is influenced by thenumber of patients, mainly with G+bacterium and a few G-bacillus, fungus and otherimportant conditioned pathogen. Patients in N-ICU are prone to high risk of nosocomialinfection. Its primary sites of infection are lower respiratory track and urinary track. The main pathogens is G-bacteria such as Pseudomonas aeruginosa, Klebsiella pneumoniae,and fungi such as Candida albicans. The ward environment in N-ICU is an importanttransmission route of these pathogens. The air disinfection program which is drawn up bydynamically monitoring the N-ICU air bacteriologically is proved to further improve theeffect of the air disinfection in N-ICU and to cut off the airborne avenue of thenosocomial infection effectively. It is the important measure to make standard treatmentmethods and strict disinfection of the ward environment to prevent and reduce the N-ICUhospital infection.