Pathogen Distribution after Incision of Trachea and Correlation Factors

OBJECTIVE To investigate the pathogen distribution of respiratory tract after tracheotomy to offer evidence for nosocomial infections.METHODS Twenty patients were included.Samples from buccal cavity,professional jargon,pharyngeal portion secretion,sputum at lower respiratory tract,ward air,article surface,drainage tube,pipeline interface of breathing machine,humidification bottle,tracheostomy cannula and hands of nurse were collected at the different time within 15 days after tracheotomy.to detect the pathogen distribution of respiratory tract.RESULTS There were many kinds of bacteria in air tube after tracheotomy,and pathogenic bacteria were mainly Gram-negative bacilli.The occurrence frequency of the bacteria in ranking were at air tube with device pipeline(P0.0125) incision of trachea,and oral and pharyngeal portion,but no correlation with hands of nurse and external environment(P0.0125) in 5-15 days after tracheotomy.CONCLUSIONS The microbial population distribution is different in different times after tracheotomy,and the risk factors are device pipeline,incision of trachea and oral and pharyngeal portion,but have no correlation with hands of nurse,ward air and article surface.