Objective To investigate the risk factors and variations in postoperative infection rates among different Class I surgical incisions,and to identify potential evaluation indicators that can impact the preoperative use...Objective To investigate the risk factors and variations in postoperative infection rates among different Class I surgical incisions,and to identify potential evaluation indicators that can impact the preoperative use of antimicrobial prophylaxis in Class I incisions.Methods Literature review was employed to establish inclusion and exclusion criteria,resulting in the initial examination of 4098 articles.Then,3149 articles were screened out,and after thorough reading of full texts,55 articles were studied carefully.Results and Conclusion Findings revealed that the incidence rate of surgical site infection(SSI)in Class I incisions ranged from 0.52%to 2.34%,with main risk factors including operation duration,underlying diseases,preoperative infections,antibiotic usage,length of hospital stay,and intraoperative bleeding.Risks of SSI varied significantly across different types of Class I incision surgeries.The key influencing factors in neurosurgery included emergency procedures,(nationalnosocomial-infection-surveillance)NNIS score,age,and postoperative drainage tubes.In orthopedics,surgery type was closely associated with infection risk.In addition,emergency surgeries,special surgery types,and low serum albumin levels were considered as risk factors for the increase of postoperative infections,but age showed little correlation.Although prophylactic use of antibiotics in thyroid,breast,and inguinal hernia surgeries was not recommended,research suggested that they should be considered based on varying surgical levels.Patient’s preoperative condition had to be thoroughly assessed to prevent postoperative infections.In clinical practice,combining the high-risk factors of postoperative infection in different Class I incisions,we should consider the evaluation indicators of preventive use of antibiotics before different surgeries,and decide the rational use of antibacterial drugs for Class I incisions.展开更多
Industrial production process including nitric acid production is an important greenhouse gas emission source. Although IPCC guidelines have given calculation methods and emission factors for N2O emission from nitric ...Industrial production process including nitric acid production is an important greenhouse gas emission source. Although IPCC guidelines have given calculation methods and emission factors for N2O emission from nitric acid production, emission factors of nitric acid production in China are not given. And it can be seen from the comparison of the guidelines and registered CDM projects in China that the N2O emission factors given in the IPCC guidelines and actual N2O emission from nitric acid production in China differ greatly while measured N2O emission data is not available, so determination of emission factors for N2O emission from nitric acid production is an important basic research for N2O emission calculation in China. The method that calculate N2O emission factors from nitric acid production in China is studied with baseline emission factors based on actual measurement of registered CDM projects and the calculated emission factor is compared with that given in the IPCC guidelines in the text.展开更多
文摘Objective To investigate the risk factors and variations in postoperative infection rates among different Class I surgical incisions,and to identify potential evaluation indicators that can impact the preoperative use of antimicrobial prophylaxis in Class I incisions.Methods Literature review was employed to establish inclusion and exclusion criteria,resulting in the initial examination of 4098 articles.Then,3149 articles were screened out,and after thorough reading of full texts,55 articles were studied carefully.Results and Conclusion Findings revealed that the incidence rate of surgical site infection(SSI)in Class I incisions ranged from 0.52%to 2.34%,with main risk factors including operation duration,underlying diseases,preoperative infections,antibiotic usage,length of hospital stay,and intraoperative bleeding.Risks of SSI varied significantly across different types of Class I incision surgeries.The key influencing factors in neurosurgery included emergency procedures,(nationalnosocomial-infection-surveillance)NNIS score,age,and postoperative drainage tubes.In orthopedics,surgery type was closely associated with infection risk.In addition,emergency surgeries,special surgery types,and low serum albumin levels were considered as risk factors for the increase of postoperative infections,but age showed little correlation.Although prophylactic use of antibiotics in thyroid,breast,and inguinal hernia surgeries was not recommended,research suggested that they should be considered based on varying surgical levels.Patient’s preoperative condition had to be thoroughly assessed to prevent postoperative infections.In clinical practice,combining the high-risk factors of postoperative infection in different Class I incisions,we should consider the evaluation indicators of preventive use of antibiotics before different surgeries,and decide the rational use of antibacterial drugs for Class I incisions.
文摘Industrial production process including nitric acid production is an important greenhouse gas emission source. Although IPCC guidelines have given calculation methods and emission factors for N2O emission from nitric acid production, emission factors of nitric acid production in China are not given. And it can be seen from the comparison of the guidelines and registered CDM projects in China that the N2O emission factors given in the IPCC guidelines and actual N2O emission from nitric acid production in China differ greatly while measured N2O emission data is not available, so determination of emission factors for N2O emission from nitric acid production is an important basic research for N2O emission calculation in China. The method that calculate N2O emission factors from nitric acid production in China is studied with baseline emission factors based on actual measurement of registered CDM projects and the calculated emission factor is compared with that given in the IPCC guidelines in the text.
