目的探讨去甲肾上腺素联合肾上腺素对感染性休克患儿组织微循环障碍、肠内喂养的影响。方法选取2014年7月至2018年9月在该院治疗的1个月龄至18岁感染性休克患儿180例,按照随机数字表法分为对照组和观察组,各90例。对照组给予肾上腺素治...目的探讨去甲肾上腺素联合肾上腺素对感染性休克患儿组织微循环障碍、肠内喂养的影响。方法选取2014年7月至2018年9月在该院治疗的1个月龄至18岁感染性休克患儿180例,按照随机数字表法分为对照组和观察组,各90例。对照组给予肾上腺素治疗,观察组在对照组基础上联合去甲肾上腺素治疗。比较两组患者治疗后7 d心率、舒张压、心脏指数、组织微循环情况、治疗预后、肠内喂养率及并发症发生率。结果观察组治疗后7 d心率、血乳酸水平低于对照组,舒张压、心脏指数、尿量高于对照组,差异有统计学意义(P<0.05);观察组治疗后7 d PVD、PPV水平均高于对照组,肠内喂养率、低血压、心动过速、心室颤动、心律失常发生率均低于对照组,差异有统计学意义(P<0.05)。结论去甲肾上腺素联合肾上腺素用于感染性休克患儿中有助于改善患者生命体征及组织微循环,能降低肠内喂养率及并发症发生率,值得临床推广应用。展开更多
Cyclic thermal exposure tests of infrared heating to 800 ℃ in 120 s followed by compressed air cooling to 150 ℃ in 60 s were performed for the laser deposited Ti60A (Ti5.54Al3.38Sn3.34Zr0.37Mo0.46Si) alloy. The ef...Cyclic thermal exposure tests of infrared heating to 800 ℃ in 120 s followed by compressed air cooling to 150 ℃ in 60 s were performed for the laser deposited Ti60A (Ti5.54Al3.38Sn3.34Zr0.37Mo0.46Si) alloy. The effects of thermal exposure cycles on length ofβphase, area fraction ofαphase and microhardness of alloy were examined by OM, SEM and EDS. The results indicate that thermal exposure cycles have significant effects on length ofβphase, area fraction ofαphase and microhardness of the alloy. The original fine basket-weaveβand 78.5%αtransform to transient wedge-likeβ, finally leaving granularβand 97.6%coarsenedαwith the increased thermal exposure cycles. The formation mechanism of coarsenedαand broken-upβmicrostructure is discussed. The alloy after 750 thermal exposure cycles has the maximum microhardness, 33.3%higher than that of the as-deposited alloy.展开更多
文摘目的探讨去甲肾上腺素联合肾上腺素对感染性休克患儿组织微循环障碍、肠内喂养的影响。方法选取2014年7月至2018年9月在该院治疗的1个月龄至18岁感染性休克患儿180例,按照随机数字表法分为对照组和观察组,各90例。对照组给予肾上腺素治疗,观察组在对照组基础上联合去甲肾上腺素治疗。比较两组患者治疗后7 d心率、舒张压、心脏指数、组织微循环情况、治疗预后、肠内喂养率及并发症发生率。结果观察组治疗后7 d心率、血乳酸水平低于对照组,舒张压、心脏指数、尿量高于对照组,差异有统计学意义(P<0.05);观察组治疗后7 d PVD、PPV水平均高于对照组,肠内喂养率、低血压、心动过速、心室颤动、心律失常发生率均低于对照组,差异有统计学意义(P<0.05)。结论去甲肾上腺素联合肾上腺素用于感染性休克患儿中有助于改善患者生命体征及组织微循环,能降低肠内喂养率及并发症发生率,值得临床推广应用。
基金Project(2010CB731705)supported by the National Basic Research Program of China
文摘Cyclic thermal exposure tests of infrared heating to 800 ℃ in 120 s followed by compressed air cooling to 150 ℃ in 60 s were performed for the laser deposited Ti60A (Ti5.54Al3.38Sn3.34Zr0.37Mo0.46Si) alloy. The effects of thermal exposure cycles on length ofβphase, area fraction ofαphase and microhardness of alloy were examined by OM, SEM and EDS. The results indicate that thermal exposure cycles have significant effects on length ofβphase, area fraction ofαphase and microhardness of the alloy. The original fine basket-weaveβand 78.5%αtransform to transient wedge-likeβ, finally leaving granularβand 97.6%coarsenedαwith the increased thermal exposure cycles. The formation mechanism of coarsenedαand broken-upβmicrostructure is discussed. The alloy after 750 thermal exposure cycles has the maximum microhardness, 33.3%higher than that of the as-deposited alloy.