To study the lung injury caused by segmented shock waves. Methods: A total of 60 rabbits and 20 rats were used in this study. The process of transmission of shock waves was divided into three phases, i.e., the recompr...To study the lung injury caused by segmented shock waves. Methods: A total of 60 rabbits and 20 rats were used in this study. The process of transmission of shock waves was divided into three phases, i.e., the recompression phase (RP), the decompression phase (DP) and the underpressure phase (UP). And the recompression wave (RW), the decompression wave (DW) and the underpressure wave (UW) simulated the three phases, respectively, generated by the equipment designed by us. The RW test, DW test and UW test were respectively applied to the animals. And lung injuries caused by segmented shock waves were discussed. Results: Under the experimental conditions, the RW did not cause obvious lung injury, but the DW could cause different severities of lung injuries. The greater the decompression ranged and the shorter the decompression duration was adopted, the more severe the lung injury was observed. The UW, to some extent, could cause obvious lung injury. Conclusions: It suggests that lung injury under shock waves probably occurs during the DP primarily. It probably does not cause direct obvious lung injury during the RP, but significantly influences the capability of causing lung injury during the DP.展开更多
Objective:To briefly introduce the increase in the number of motor vehicles in our country and main research advances of traffic medicine.Methods:To collect the relative data issued by government and the papers pulish...Objective:To briefly introduce the increase in the number of motor vehicles in our country and main research advances of traffic medicine.Methods:To collect the relative data issued by government and the papers pulished in the newspapers or medical journals,and analyze them with combination of our own research work. Results:1.The number of motor vehicles in our country in 1997 was 680.02 times more than that in 1951,and increases t 42.0932 million from 1.5887 million over the past two decades(1978-1997)since the reform and opening,with net increase of 40.5045 million,increasing about 25 times.During the same period,the number of motorcycles increased to 20.2221 million from 104.3 thousand,increasing about 193 times.There were 4.4 hundred million bicycles,accounting for one third or the total world wide,Over 30% to 50% of eople in cities used bicycles as their transport tool when they go out.2.In the 1990's (9190 to 1997),the number of motor vehicles increased 1.85 times,while road traffic accidents(RATs) only increased 0.22 times,the deaths and the injuries 0.5 and 0.23 times only,respectively,indicating that the increasing tendency of RTAs and casualties was controlled to some extent.3.The prople of 21 to 45 years old were dominant among all casualties.The sequence of deaths in order was pedestrians(26.5%),vehicle drivers(24.8%),passengers(24.3%),bicyclists(18.4%)and others (6.1%).4.Concerning the accident causes,human faults accounted for 92.9%,83.6% of RTAs wre due to the faults of motor vehicle drivers,and 1.5% of RTAs were due to driving after drinking with deaths occupying 2.9% of the total.5.Proneness to RTSs:6%-8% of motor vehical drivers had proneness to RTA,causing 35%-40% fo the totoal RTAs.6.Various bio-impact machines were developed.The maximum impact velocity could reach 324 km/h.They can be used to induce impact injuries on different animals,at different patterns and even on different regions of body.7.The inflicting mechanisms for cranioserebral and chest impact injuries were investigated.Conclusions:1.With the rapid development of the economy and sharp increase of motor vehicles in China,RTAs also accordingly increase.The traffic administration and road construction,although being greatly improved,are still behind the increase of motor vehicles,which contradiction is still difficults resolved to update.2.In the next centrury,we should establish national database of traffic injuries,improve national emergency medical services system(EMSS)and the safety consciousness of road users,and comprehensively govern RTAs and traffic accident injuries.展开更多
Trauma is a prominent problem in modern soci-ety,which is called'the disease of developed society'or'the twin brother of modern civilization'.Nowada-ys,over one million people die of trauma and several...Trauma is a prominent problem in modern soci-ety,which is called'the disease of developed society'or'the twin brother of modern civilization'.Nowada-ys,over one million people die of trauma and severalten million people are injured worldwide each year.InChina,over one hundred thousand people die of trau-ma and several millions are injured each year.There-展开更多
基金Thisworkwassupportedby"theNinth 5 YearPlan"InstructiveProjectofPLA (No .96L0 40 )
文摘To study the lung injury caused by segmented shock waves. Methods: A total of 60 rabbits and 20 rats were used in this study. The process of transmission of shock waves was divided into three phases, i.e., the recompression phase (RP), the decompression phase (DP) and the underpressure phase (UP). And the recompression wave (RW), the decompression wave (DW) and the underpressure wave (UW) simulated the three phases, respectively, generated by the equipment designed by us. The RW test, DW test and UW test were respectively applied to the animals. And lung injuries caused by segmented shock waves were discussed. Results: Under the experimental conditions, the RW did not cause obvious lung injury, but the DW could cause different severities of lung injuries. The greater the decompression ranged and the shorter the decompression duration was adopted, the more severe the lung injury was observed. The UW, to some extent, could cause obvious lung injury. Conclusions: It suggests that lung injury under shock waves probably occurs during the DP primarily. It probably does not cause direct obvious lung injury during the RP, but significantly influences the capability of causing lung injury during the DP.
文摘Objective:To briefly introduce the increase in the number of motor vehicles in our country and main research advances of traffic medicine.Methods:To collect the relative data issued by government and the papers pulished in the newspapers or medical journals,and analyze them with combination of our own research work. Results:1.The number of motor vehicles in our country in 1997 was 680.02 times more than that in 1951,and increases t 42.0932 million from 1.5887 million over the past two decades(1978-1997)since the reform and opening,with net increase of 40.5045 million,increasing about 25 times.During the same period,the number of motorcycles increased to 20.2221 million from 104.3 thousand,increasing about 193 times.There were 4.4 hundred million bicycles,accounting for one third or the total world wide,Over 30% to 50% of eople in cities used bicycles as their transport tool when they go out.2.In the 1990's (9190 to 1997),the number of motor vehicles increased 1.85 times,while road traffic accidents(RATs) only increased 0.22 times,the deaths and the injuries 0.5 and 0.23 times only,respectively,indicating that the increasing tendency of RTAs and casualties was controlled to some extent.3.The prople of 21 to 45 years old were dominant among all casualties.The sequence of deaths in order was pedestrians(26.5%),vehicle drivers(24.8%),passengers(24.3%),bicyclists(18.4%)and others (6.1%).4.Concerning the accident causes,human faults accounted for 92.9%,83.6% of RTAs wre due to the faults of motor vehicle drivers,and 1.5% of RTAs were due to driving after drinking with deaths occupying 2.9% of the total.5.Proneness to RTSs:6%-8% of motor vehical drivers had proneness to RTA,causing 35%-40% fo the totoal RTAs.6.Various bio-impact machines were developed.The maximum impact velocity could reach 324 km/h.They can be used to induce impact injuries on different animals,at different patterns and even on different regions of body.7.The inflicting mechanisms for cranioserebral and chest impact injuries were investigated.Conclusions:1.With the rapid development of the economy and sharp increase of motor vehicles in China,RTAs also accordingly increase.The traffic administration and road construction,although being greatly improved,are still behind the increase of motor vehicles,which contradiction is still difficults resolved to update.2.In the next centrury,we should establish national database of traffic injuries,improve national emergency medical services system(EMSS)and the safety consciousness of road users,and comprehensively govern RTAs and traffic accident injuries.
文摘Trauma is a prominent problem in modern soci-ety,which is called'the disease of developed society'or'the twin brother of modern civilization'.Nowada-ys,over one million people die of trauma and severalten million people are injured worldwide each year.InChina,over one hundred thousand people die of trau-ma and several millions are injured each year.There-
