Objective To investigate the related factors that affect the short outcome of abdominal surgery among elderly patients with acute abdomen.Methods Clinical data of 378 patients aged >60 years with acute abdo-men were retrospectively analyzed.The key factors under analysis in this study were the occurrence of major complica-tions,death from any cause within 30 days and related factors after the operation.Results The most common diagno-ses were acute appendicitis (134 cases,35.4%),biliary tract disease (96 cases,25.4%),intestinal obstruction (68 cases,20.0%)and inguinal hernia(42 cases,11.1%).The majority of patients(327cases,86.5%)underwent open surgery.12cases(23.5%)of all 51 cases underwent laparoscopic surgery were converted to open surgery.The 30 day mortality rate and rate of operation -related complications were 9.5% and 22.0%,respectively.Analysis showed that patients'age,low body mass index,open surgery and ASA grade Ⅲ or above may increase mortality(all P <0.05).Conclusion The acute abdomen in elderly patients was with much complications,operation treatment is still the first choice.The patient's older age,low body mass index,open surgery may increase the mortality rate.ASA grade higher may predict a bad prognosis.The operation of elderly patiens had a high morbidity and mortality,as general surgeon,we should pay more attention to acute abdomen in elderly patients.

ObjectiveTo analyze the measures and effects of comprehensive noise control in an automobile engine manufacturing enterprise. Methods An automobile engine manufacturing enterprise with noise exposure work-sites was selected as the research subject. The noise hazard status of the enterprise was investigated. The noise hazard exceeded the national standard in work-sites was comprehensively treated. The treatment effect was analyzed. Results A total of 395 work-sites exposed to noise were detected. Among them, 16 work-sites exceeded the national noise standard, with the rate of 4.1%. The work-sites with noise exceeding the national standard were mainly in the machine workshop and the casting workshop, with normalization of equivalent continuous A-weighted sound pressure level to a nominal eight hours working day (L_EX,8h) ranging from 86.8 to 89.2 and 85.2 to 90.2 dB(A), respectively. In addition, the classification of occupational noise exposure of the mold protection group in the casting workshop was level Ⅱ, and classification of occupational noise exposure of other work-sites with excessive national standard was grade Ⅰ. After the enterprise implemented noise control measures such as process reform, equipment replacement, sound insulation, noise reduction, sound absorption, and vibration isolation, the L_EX,8h of nine positions were lower than those before rectification ［(86.7±1.1) vs (83.3±1.3) dB(A), P<0.01］. Conclusion The use of comprehensive control measures can achieve the purpose of reducing noise from the sources, and can be used for reference by relevant enterprises with noise hazards.

Animals ; SARS-CoV-2 ; Antibodies, Neutralizing ; Macaca mulatta ; COVID-19/prevention & control* ; Antibodies, Viral ; Vaccines