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Objective@#To investigate the influencing factors of nosocomial infections among patients undergoing radiotherapy, so as to provide insights into nosocomial infection control among radiotherapy patients. @*Methods@#The malignant tumor patients receiving radiotherapy in Yiwu Central Hospital from 2019 to 2020 were selected. Their demographic features, radiotherapy and nosocomial infections were collected through the eletronic medical records. The factors affecting nosocomial infections were identified among radiotherapy patients using a multivariable logistic regression model.@*Results@#Totally 553 malignant tumor patients receiving radiotherapy were enrolled, including 268 men ( 48.46% ) and with a mean age of ( 60.31±13.66 ) years. The mean duration of hospital stay was ( 28.67±14.32 ) days, and the mean radiotherapy cycle was ( 3.63±1.89 ) weeks. A total of 46 patients were detected with nosocomial infections, with prevalence of 8.32%. The top three sites with the highest prevalence of nosocomial infections included the lower respiratory tract ( 14 cases, 30.43% ), oral cavity ( 10 cases, 21.74 ) and urinary tract ( 8 cases, 17.39% ), and 42 bacterial strains were isolated, with Gram-negative bacteria as the predominant strains ( 25 strains, 59.52% ). Multivariable logistic regression analysis showed that radiotherapy cycle of 4 weeks and longer ( OR=3.857, 95%CI: 1.896-7.846 ), radiotherapy exposure ( OR=3.254, 95%CI: 1.561-6.783 ), arteriovenous catheterization ( OR=2.165, 95%CI: 1.144-4.098 ), urinary tract intubation ( OR=6.028, 95%CI: 1.841-19.734 ) and poor nutritional status ( OR=3.933, 95%CI: 1.493-10.360 ) were associated with nosocomial infections among radiotherapy patients.@*Conclusion@# Radiotherapy cycle, exposure to radiotherapy, arteriovenous catheterization, urinary tract intubation and poor nutritional status are factors affecting nosocomial infections among radiotherapy patients.
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Objective:To study the extraction method of total flavonoids in Mosla hangzhowensis Matsuda.Methods:Orthogonal experiment design was used,with the content of the total flavonoids as the index,to study the effect of ethanol concentration,solvent quantity and extraction time on recovery rate of total flavonoids.Results:The best extraction condition was:extract two times;adding 20 fold 65% ethanol and to extract an hour each time.Conclusion:This extraction method is convenient and feasible.
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Different kinds of average degree of polymerzation (DP) of chitosan to the freshness preserving of Scomberomorus niphonius and Pseudosoiaena polyactis and lean pork were studied. A satisfied results was acquired by the low DP of chitosan. The preserving results stored in 6C-7C were better than that of stored in 20C - 23C ,particularly.