目的探讨腰椎后路减压融合内固定术加速康复外科(enhanced recovery after surgery,ERAS)对骨科护士护理的知识、信念和行为(知信行)以及围术期安全性的影响。方法2019年8月我科开展腰椎后路减压融合内固定术ERAS,使用《外科医护人员ERA...目的探讨腰椎后路减压融合内固定术加速康复外科(enhanced recovery after surgery,ERAS)对骨科护士护理的知识、信念和行为(知信行)以及围术期安全性的影响。方法2019年8月我科开展腰椎后路减压融合内固定术ERAS,使用《外科医护人员ERAS知信行现状的调查问卷》对开展常规护理模式和ERAS模式的98名骨科护士知信行状况进行调查,分析开展EARS对患者围术期质量安全的影响。结果开展腰椎后路融合减压内固定术ERAS后,骨科护士知识得分优秀率由40.8%(40/98)提高到55.1%(54/98)(χ^2=4.007,P=0.045),患者住院时间由(7.6±3.5)d缩短到(7.3±2.4)d(t=2.444,P=0.015),并发症发生率由3.3%(32/958)降至1.4%(12/883)(χ^2=7.732,P=0.005)。结论开展腰椎后路融合减压内固定术ERAS有助于提高患者围术期质量安全及护士知信行状况。展开更多
Anterior cruciate ligament(ACL)injuries of the knee are one of the most common and serious athletic injuries.The widely used cortical suspension fixation buttons for ligament reconstruction are permanent implants,part...Anterior cruciate ligament(ACL)injuries of the knee are one of the most common and serious athletic injuries.The widely used cortical suspension fixation buttons for ligament reconstruction are permanent implants,particularly those made from conventional steel or titanium alloys.In this study,a biodegradable Zn-0.45Mn-0.2Mg(ZMM42)alloy with the yield strength of 300.4 MPa and tensile strength of 329.8 MPa was prepared through hot extrusion.The use of zinc alloys in the preparation of cortical suspension fixation buttons was proposed for the first time.After 35 d of immersion in simulated body fluids,the ZMM42 alloy fixation buttons were degraded at a rate of 44μm/a,and the fixation strength was retained(379.55 N)in the traction loops.Simultaneously,the ZMM42 alloy fixation buttons exhibited an increase in MC3T3-E1 cell viability and high antibacterial activity against Escherichia coli and Staphylococcus aureus.These results reveal the potential of biodegradable zinc alloys for use as ligament reconstruction materials and for developing diverse zinc alloy cortical suspension fixation devices.展开更多
This study examined the mechanical properties, springback behavior from three-point bending loading–unloading tests and biocompatibility from human osteoblast cell adhesion and proliferation experiments in Ti-15Mo al...This study examined the mechanical properties, springback behavior from three-point bending loading–unloading tests and biocompatibility from human osteoblast cell adhesion and proliferation experiments in Ti-15Mo alloy with different microstructures. The springback ratio increased after the appearance of deformation microstructures including {332} < 113 > twins and dislocations, due to the increased bending strength and unchanged Young’s modulus. By contrast, the change in springback ratio was dependent on the competing effect of the simultaneous increase in bending strength and Young’s modulus after phase transformation, namely, the isothermal ω-phase formation. Good cell adhesion and proliferation were observed on the alloy surface, and they were not significantly affected by the deformation twins, dislocations and isothermal ω-phase.The diversity of deformation and phase transformation microstructures made it possible to control the springback behavior effectively while keeping the biocompatibility of the alloy as an implant rod used for spinal fixation devices.展开更多
The crystallization behavior of desulfurization product is directly related to its high-temperature-resistant ability.Effects of the additive on the sulfur-fixation efficiency of the Ba-sulfur-fixation agent and also ...The crystallization behavior of desulfurization product is directly related to its high-temperature-resistant ability.Effects of the additive on the sulfur-fixation efficiency of the Ba-sulfur-fixation agent and also on the crystallization behavior of the sulfur-fixation product were studied when CaCO 3 and BaCO 3 were used as the desulfurization agent and MgO and SrCO 3 used as the assistant sulfur-fixation agent. The result shows that increase of sulfur-fixation capability for the additive is not owe to their directly react to form sulfate or interact with CaCO 3 and BaCO 3 to form composite mineral heat-resistant in high temperature, but owe to their activation to sulfur-fixation reaction of the sulfur-fixation agent.展开更多
文摘目的探讨腰椎后路减压融合内固定术加速康复外科(enhanced recovery after surgery,ERAS)对骨科护士护理的知识、信念和行为(知信行)以及围术期安全性的影响。方法2019年8月我科开展腰椎后路减压融合内固定术ERAS,使用《外科医护人员ERAS知信行现状的调查问卷》对开展常规护理模式和ERAS模式的98名骨科护士知信行状况进行调查,分析开展EARS对患者围术期质量安全的影响。结果开展腰椎后路融合减压内固定术ERAS后,骨科护士知识得分优秀率由40.8%(40/98)提高到55.1%(54/98)(χ^2=4.007,P=0.045),患者住院时间由(7.6±3.5)d缩短到(7.3±2.4)d(t=2.444,P=0.015),并发症发生率由3.3%(32/958)降至1.4%(12/883)(χ^2=7.732,P=0.005)。结论开展腰椎后路融合减压内固定术ERAS有助于提高患者围术期质量安全及护士知信行状况。
基金financially supported by the Xiongan New Area Science and Technology Innovation Project,China(No.2022XACX0600)the Beijing Nova Program Cross Cooperation Program,China(No.20220484178)。
文摘Anterior cruciate ligament(ACL)injuries of the knee are one of the most common and serious athletic injuries.The widely used cortical suspension fixation buttons for ligament reconstruction are permanent implants,particularly those made from conventional steel or titanium alloys.In this study,a biodegradable Zn-0.45Mn-0.2Mg(ZMM42)alloy with the yield strength of 300.4 MPa and tensile strength of 329.8 MPa was prepared through hot extrusion.The use of zinc alloys in the preparation of cortical suspension fixation buttons was proposed for the first time.After 35 d of immersion in simulated body fluids,the ZMM42 alloy fixation buttons were degraded at a rate of 44μm/a,and the fixation strength was retained(379.55 N)in the traction loops.Simultaneously,the ZMM42 alloy fixation buttons exhibited an increase in MC3T3-E1 cell viability and high antibacterial activity against Escherichia coli and Staphylococcus aureus.These results reveal the potential of biodegradable zinc alloys for use as ligament reconstruction materials and for developing diverse zinc alloy cortical suspension fixation devices.
基金supported by the National Natural Science Foundation of China(No.52071051)。
文摘This study examined the mechanical properties, springback behavior from three-point bending loading–unloading tests and biocompatibility from human osteoblast cell adhesion and proliferation experiments in Ti-15Mo alloy with different microstructures. The springback ratio increased after the appearance of deformation microstructures including {332} < 113 > twins and dislocations, due to the increased bending strength and unchanged Young’s modulus. By contrast, the change in springback ratio was dependent on the competing effect of the simultaneous increase in bending strength and Young’s modulus after phase transformation, namely, the isothermal ω-phase formation. Good cell adhesion and proliferation were observed on the alloy surface, and they were not significantly affected by the deformation twins, dislocations and isothermal ω-phase.The diversity of deformation and phase transformation microstructures made it possible to control the springback behavior effectively while keeping the biocompatibility of the alloy as an implant rod used for spinal fixation devices.
文摘The crystallization behavior of desulfurization product is directly related to its high-temperature-resistant ability.Effects of the additive on the sulfur-fixation efficiency of the Ba-sulfur-fixation agent and also on the crystallization behavior of the sulfur-fixation product were studied when CaCO 3 and BaCO 3 were used as the desulfurization agent and MgO and SrCO 3 used as the assistant sulfur-fixation agent. The result shows that increase of sulfur-fixation capability for the additive is not owe to their directly react to form sulfate or interact with CaCO 3 and BaCO 3 to form composite mineral heat-resistant in high temperature, but owe to their activation to sulfur-fixation reaction of the sulfur-fixation agent.
