目的分析影响急诊科心脏骤停患者院前心肺复苏成功的因素。方法回顾性分析2016年1月至2018年3月陆军军医大学大坪医院110例接受院前心肺复苏抢救的心脏骤停患者的临床资料,根据抢救结果将患者分为成功组(42例)和未成功组(68例),比较两...目的分析影响急诊科心脏骤停患者院前心肺复苏成功的因素。方法回顾性分析2016年1月至2018年3月陆军军医大学大坪医院110例接受院前心肺复苏抢救的心脏骤停患者的临床资料,根据抢救结果将患者分为成功组(42例)和未成功组(68例),比较两组患者的临床资料,采用Logistic回归分析对院前心肺复苏成功的影响因素进行分析。结果在所有导致心脏骤停原因中,心源性原因患者复苏成功率最高,占45.12%,其次为中枢神经系统,占27.27%;车祸所占比例较低,为12.5%。成功组与未成功组患者心脏骤停绝对时间[(18.62±8.05) min vs(24.05±9.34) min]、开始抢救时间[(5.64±1.48) min vs (9.26±1.94) min]、气管插管时间[(6.18±2.94) min vs (10.14±4.16) min]和肾上腺素累积用量[(8.34±5.48) mg vs (18.38±9.64) mg]比较,差异均有统计学意义(P<0.05);Logistic回归分析结果显示,心源性疾病、心室纤颤、无脉搏电活动、应用电除颤和肾上腺素用量<4 mg是心肺复苏抢救成功的影响因素(P<0.05)。结论院前心脏骤停患者心肺复苏成功的影响因素多且复杂,需要同时建立多项措施以减少各类危险因素的发生。展开更多
In Yuqia Basin, the climate is arid and the ecologic environment is fragile, and shortage of water resources has seriously restricted the sustainable development of local economy. In order to meet the needs of industr...In Yuqia Basin, the climate is arid and the ecologic environment is fragile, and shortage of water resources has seriously restricted the sustainable development of local economy. In order to meet the needs of industrial and domestic water in the Yuqia Basin, numerical simulation was used to evaluate the groundwater resources and potential for exploitation. The results showed that the mathematical model and calculation parameters used were mainly in accordance with practical situation. The calculated value of the underground water level is consistent with measured value during the period of identification and validation. The total recharge of groundwater resources was 22.02×10~4 m^3/d, and the total drainage was 21.95×10~4 m^3/d at present. The Yuqia River leakage is the main supply source of groundwater. There is no significant effect on area of wetland when water source place exploited by 2.5×10~4 m^3/d at alluvial-diluvial fan of Yuqia River. After long-term exploitation, the spring flow reduces from 1.42×10~4 m^3/d to 1.01×10~4 m^3/d and wetland area reduces by 32.7% of original area. The calculation of water balance shows that it is safe to the Yuqia Basin, Da Qiadam Lake, the Mahai Basin at downstream of Yuqia River and wetland under the condition of water source place exploited by 2.5×10~4 m^3/d.展开更多
The changes of development and utilization of karst groundwater in Sangu Spring Basin have made the original groundwater resource evaluation unable to meet the needs of future economic development.Based on analysis of...The changes of development and utilization of karst groundwater in Sangu Spring Basin have made the original groundwater resource evaluation unable to meet the needs of future economic development.Based on analysis of existing data,combined with the characteristics of supplement,runoff and draining of regional karst groundwater,the Visual Modelflow software was used to build a numerical simulation model of Sangu spring Basin.The amount of karst groundwater resource and groundwater environment of the Basin were evaluated under different exploitation schemes,and the changes of karst groundwater environment in the future ten years were also predicted.The fitting error which is less than 0.5 m between the calculated value and measured value of the water level in the fitted borehole accounts for 93%.For the lithologically and structurally complex Sangu Spring Basin,the fitting effect of numerical simulation model was ideal.On the basis of the current mining amount of 111.80 million m3/a,the total redistributed exploited amount in the spring region was 61.79 million m3/a.Under the condition that the quantity of recoverable resources reached 173.59 million m3/a and under different precipitation schemes,all constraint conditions were satisfied,such as regional water level drawdown,maximum allowable water level drawdown in every simulated water source area and the flow rate of Guobi Spring.The results will provide a scientific basis for the rational development and utilization of karst groundwater in Sangu Spring Basin.展开更多
文摘目的分析影响急诊科心脏骤停患者院前心肺复苏成功的因素。方法回顾性分析2016年1月至2018年3月陆军军医大学大坪医院110例接受院前心肺复苏抢救的心脏骤停患者的临床资料,根据抢救结果将患者分为成功组(42例)和未成功组(68例),比较两组患者的临床资料,采用Logistic回归分析对院前心肺复苏成功的影响因素进行分析。结果在所有导致心脏骤停原因中,心源性原因患者复苏成功率最高,占45.12%,其次为中枢神经系统,占27.27%;车祸所占比例较低,为12.5%。成功组与未成功组患者心脏骤停绝对时间[(18.62±8.05) min vs(24.05±9.34) min]、开始抢救时间[(5.64±1.48) min vs (9.26±1.94) min]、气管插管时间[(6.18±2.94) min vs (10.14±4.16) min]和肾上腺素累积用量[(8.34±5.48) mg vs (18.38±9.64) mg]比较,差异均有统计学意义(P<0.05);Logistic回归分析结果显示,心源性疾病、心室纤颤、无脉搏电活动、应用电除颤和肾上腺素用量<4 mg是心肺复苏抢救成功的影响因素(P<0.05)。结论院前心脏骤停患者心肺复苏成功的影响因素多且复杂,需要同时建立多项措施以减少各类危险因素的发生。
基金supported by the Hydrogeology and Geology Survey of Qing Hai Energy Base(1212011220971)Hydrogeology and Geology Survey of Shendong-Jindong Energy Base(121201106000150009)+1 种基金Study of Ground Ice Ablation Characteristics in Alpine Thawing Zone and Impact of Groundwater Transform Relation(No.41302190)Release and Migration Mechanism of Typical Heavy-Metals in the Gangue under Freezing and Thawing Conditions in the Alpine Region(No.41502336)
文摘In Yuqia Basin, the climate is arid and the ecologic environment is fragile, and shortage of water resources has seriously restricted the sustainable development of local economy. In order to meet the needs of industrial and domestic water in the Yuqia Basin, numerical simulation was used to evaluate the groundwater resources and potential for exploitation. The results showed that the mathematical model and calculation parameters used were mainly in accordance with practical situation. The calculated value of the underground water level is consistent with measured value during the period of identification and validation. The total recharge of groundwater resources was 22.02×10~4 m^3/d, and the total drainage was 21.95×10~4 m^3/d at present. The Yuqia River leakage is the main supply source of groundwater. There is no significant effect on area of wetland when water source place exploited by 2.5×10~4 m^3/d at alluvial-diluvial fan of Yuqia River. After long-term exploitation, the spring flow reduces from 1.42×10~4 m^3/d to 1.01×10~4 m^3/d and wetland area reduces by 32.7% of original area. The calculation of water balance shows that it is safe to the Yuqia Basin, Da Qiadam Lake, the Mahai Basin at downstream of Yuqia River and wetland under the condition of water source place exploited by 2.5×10~4 m^3/d.
基金This work was supported by the Fundamental Research Funds for the Chinese Academy of Geosciences(No.JYYWF20180401)the China Geological Survey project(No.DD20160296,DD20201123).
文摘The changes of development and utilization of karst groundwater in Sangu Spring Basin have made the original groundwater resource evaluation unable to meet the needs of future economic development.Based on analysis of existing data,combined with the characteristics of supplement,runoff and draining of regional karst groundwater,the Visual Modelflow software was used to build a numerical simulation model of Sangu spring Basin.The amount of karst groundwater resource and groundwater environment of the Basin were evaluated under different exploitation schemes,and the changes of karst groundwater environment in the future ten years were also predicted.The fitting error which is less than 0.5 m between the calculated value and measured value of the water level in the fitted borehole accounts for 93%.For the lithologically and structurally complex Sangu Spring Basin,the fitting effect of numerical simulation model was ideal.On the basis of the current mining amount of 111.80 million m3/a,the total redistributed exploited amount in the spring region was 61.79 million m3/a.Under the condition that the quantity of recoverable resources reached 173.59 million m3/a and under different precipitation schemes,all constraint conditions were satisfied,such as regional water level drawdown,maximum allowable water level drawdown in every simulated water source area and the flow rate of Guobi Spring.The results will provide a scientific basis for the rational development and utilization of karst groundwater in Sangu Spring Basin.
