Study On The Relationship Between Wound Factors, Monthly Average Temperature ?Humidity And The Distribution Of Pathogenic Bacteria In Open Wound Infection Of Extremities

ObjectivesTo explore the distribution and drug resistance of pathogenic bacteria in wound infection of open wound of extremities under different trauma,different apparent temperature and relative humidityMethodsFrom January 2012 to July 2017,2017 strains of pathogenic bacteria were analyzed retrospectively.They were divided into three groups and four types of incisions:type I incision,type II and type III incision caused by open wound in limbs and type IV incision caused by open wound.The distribution and drug resistance of pathogenic bacteria in four types of incision were analyzed.The five most common ways of trauma were analyzed.Using the software of IBM spss22.0,Friedman analysis of variance,Pearson correlation coefficient and multiple linear regression method to analyze the relationship between the distribution of pathogenic bacteria and trauma factors,monthly average apparent temperature and relative humidity in limb infection of orthopedics.P<0.05 is statistically significant.ResuitsThere were 1069,755 and 190 strains of pathogenic bacteria in the three groups.There was no significant difference in the distribution of pathogens,which were mainly Gram-negative bacteria.In the three groups,the drug resistance of pathogenic bacteria in type I incision was significantly higher than that intype II,III and IV incision.The p value of correlation between trauma factors and pathogenic bacteria distribution was more than 0.05.In the single factor and multi factor analysis,the monthly average temperature and humidity were correlated with pathogens(P<0.05),which was statistically significant.0.2<adjusted R~2<0.4,indicating weak correlation.ConclusionThe drug resistance of the pathogenic bacteria in the type I incision of open wound infection of extremities was higher than that in type II,III and IV.The distribution of pathogenic bacteria of limb open injury was weakly related to the monthly average temperature and humidity,but not to the way of trauma.