目的:通过SEDline镇静监测下右美托咪定在胸腔镜肺叶切除术病人中的应用,以期为麻醉选择更为安全有效的方法。方法:选择ASAⅠ或Ⅱ级的胸腔镜肺叶切除术病人20例,采用随机数字表法分为右美托咪定组(D组)和对照组(N组),每组10例。记录2组...目的:通过SEDline镇静监测下右美托咪定在胸腔镜肺叶切除术病人中的应用,以期为麻醉选择更为安全有效的方法。方法:选择ASAⅠ或Ⅱ级的胸腔镜肺叶切除术病人20例,采用随机数字表法分为右美托咪定组(D组)和对照组(N组),每组10例。记录2组病人麻醉诱导前(T_(0))、切皮时(T_(1))、单肺通气30 min(T_(2))、术毕即刻(T_(3))的平均动脉压(MAP)、心率(HR)、血氧饱和度(SPO 2)、病人状态指数(PSI);记录2组病人术中瑞芬太尼和丙泊酚的用量;以及术后6 h、24 h VAS评分和Ramsay评分。结果:2组病人在T_(1)、T_(2)、T_(3)时间点MAP均降低(P<0.01),HR减慢(P<0.01),PSI均降低(P<0.01)。其中,N组在T_(2)时间点MAP降低较D组更明显(P<0.01),D组在T_(1)时间点HR低于N组(P<0.01),在T_(2)时间点PSI低于N组(P<0.01);术中瑞芬太尼和丙泊酚的用量D组均明显低于N组;在术后6 h VAS评分D组低于N组(P<0.01),术后6 h Ramsay评分D组高于N组(P<0.01)。结论:胸腔镜肺叶切除术病人行右美托咪定联合SEDline镇静监测,术中病人麻醉状态得以控制,血流动力学更加平稳,术后镇静镇痛更加完善,无术后躁动,能对病人的快速康复起到一定的积极作用。展开更多
Density functional theory （DFT） was used to calculate a set of molecular descri ptors （properties） for 14 fluoroquinolones with anti-B.fragilis activity. Principal component analysis （PCA） and hierarchical clust...Density functional theory （DFT） was used to calculate a set of molecular descri ptors （properties） for 14 fluoroquinolones with anti-B.fragilis activity. Principal component analysis （PCA） and hierarchical cluster analysis （HCA） were employed in order to reduce dimensionality and investigate which subset of variables should be more effective for classifying fluoroquinolones according to their an-B.fragilis activity degree. The PCA shows that the variables of ELUMO, AEHL, μ, Q2, Q3, Q5, Q6, QB, LogP, MR and MP are responsible for the separation between compounds with higher and lower anti-B.fragilis activities. The HCA results are similar to those obtained with PCA. By using the chemometric results, 4 synthetic compounds were analyzed through PCA and HCA, and 2 of them are proposed as active molecules against B.fragilis, which is consistent with the results of clinic experiments. The methodologies of PCA and HCA provide a reliable rule for classifying new fluoroquinolones with anti-B.fragilis activity.展开更多
A simple testing method for secondary or induced stress of surrounding rockwas presented by laboratory experiment, numerical simulation and in situ testing based onthe basic principle of the historical stress restorin...A simple testing method for secondary or induced stress of surrounding rockwas presented by laboratory experiment, numerical simulation and in situ testing based onthe basic principle of the historical stress restoring method.First, stress equivalent coefficient,which key coefficient of stress restored testing, was obtained by laboratory experiment.Second, experimental results were examined using 3D finite element numericalanalysis and the influence factors were analyzed by 2D finite element numerical analysis.The correctness of induced stress measuring results in situ for highway tunnel wereproved by elastic mechanics theory solution and single-hole stress rescission method.Thenew simple method of induced stress measuring has important practical value for undergroundengineering induced stress field analysis.展开更多
文摘目的:通过SEDline镇静监测下右美托咪定在胸腔镜肺叶切除术病人中的应用,以期为麻醉选择更为安全有效的方法。方法:选择ASAⅠ或Ⅱ级的胸腔镜肺叶切除术病人20例,采用随机数字表法分为右美托咪定组(D组)和对照组(N组),每组10例。记录2组病人麻醉诱导前(T_(0))、切皮时(T_(1))、单肺通气30 min(T_(2))、术毕即刻(T_(3))的平均动脉压(MAP)、心率(HR)、血氧饱和度(SPO 2)、病人状态指数(PSI);记录2组病人术中瑞芬太尼和丙泊酚的用量;以及术后6 h、24 h VAS评分和Ramsay评分。结果:2组病人在T_(1)、T_(2)、T_(3)时间点MAP均降低(P<0.01),HR减慢(P<0.01),PSI均降低(P<0.01)。其中,N组在T_(2)时间点MAP降低较D组更明显(P<0.01),D组在T_(1)时间点HR低于N组(P<0.01),在T_(2)时间点PSI低于N组(P<0.01);术中瑞芬太尼和丙泊酚的用量D组均明显低于N组;在术后6 h VAS评分D组低于N组(P<0.01),术后6 h Ramsay评分D组高于N组(P<0.01)。结论:胸腔镜肺叶切除术病人行右美托咪定联合SEDline镇静监测,术中病人麻醉状态得以控制,血流动力学更加平稳,术后镇静镇痛更加完善,无术后躁动,能对病人的快速康复起到一定的积极作用。
基金Project(2019YFC1803603)supported by the National Key R&D Program of ChinaProject(2024JJ4061)supported by the Natural Science Foundation of Hunan Province,ChinaProject(2023ZZTS0517)supported by the Fundamental Research Funds for the Central Universities of Central South University,China。
基金The project was supported by the National Natural Science Foundation of China (No. 10574096)
文摘Density functional theory （DFT） was used to calculate a set of molecular descri ptors （properties） for 14 fluoroquinolones with anti-B.fragilis activity. Principal component analysis （PCA） and hierarchical cluster analysis （HCA） were employed in order to reduce dimensionality and investigate which subset of variables should be more effective for classifying fluoroquinolones according to their an-B.fragilis activity degree. The PCA shows that the variables of ELUMO, AEHL, μ, Q2, Q3, Q5, Q6, QB, LogP, MR and MP are responsible for the separation between compounds with higher and lower anti-B.fragilis activities. The HCA results are similar to those obtained with PCA. By using the chemometric results, 4 synthetic compounds were analyzed through PCA and HCA, and 2 of them are proposed as active molecules against B.fragilis, which is consistent with the results of clinic experiments. The methodologies of PCA and HCA provide a reliable rule for classifying new fluoroquinolones with anti-B.fragilis activity.
基金Supported by the National Natural Science Foundation Special Originality Innovation Research Colony of China(50621403)
文摘A simple testing method for secondary or induced stress of surrounding rockwas presented by laboratory experiment, numerical simulation and in situ testing based onthe basic principle of the historical stress restoring method.First, stress equivalent coefficient,which key coefficient of stress restored testing, was obtained by laboratory experiment.Second, experimental results were examined using 3D finite element numericalanalysis and the influence factors were analyzed by 2D finite element numerical analysis.The correctness of induced stress measuring results in situ for highway tunnel wereproved by elastic mechanics theory solution and single-hole stress rescission method.Thenew simple method of induced stress measuring has important practical value for undergroundengineering induced stress field analysis.
