目的:QT离散度与心肌梗死(MI)后恶性室性心律失常密切相关,它对急性心肌梗死(AMI)的预后作用已引起人们的关注.但是,目前对基于动态心电图记录的三导联QT离散度检测方法及其作用研究甚少.本研究的目的旨在探讨基于动态心电图记录的三导...目的:QT离散度与心肌梗死(MI)后恶性室性心律失常密切相关,它对急性心肌梗死(AMI)的预后作用已引起人们的关注.但是,目前对基于动态心电图记录的三导联QT离散度检测方法及其作用研究甚少.本研究的目的旨在探讨基于动态心电图记录的三导联QT离散度检测方法以及其与心率变异性的相关性.方法:符合WHO诊断标准的48例A-MI患者均于发病6小时内接受动态心电图监测.采用Oxford Prima Holter System动态分析仪,计算基于动态心电图记录的三导联QT离散度指标(QTd、QTpd)及心率变异性指标,并分析其相关性.结果:AMI病人QTd、QTpd与SDNN、HF、LF/HF之间均有显著相关性(r绝对值=0.614～0.808,P分别<0.05).结论:基于动态心电图记录测量的QT离散度、QTp离散度与心率变异性的时域指标SDNN及频域指标LF/HF有很好的相关性,它们能用于评价AMI病人的预后.展开更多
In this paper, using the Φ-mapping theory, it is shown that two kinds of topological defects, i.e., the vortex lines and the monopoles exist in the helical configuration of magnetic field in triplet superconductors. ...In this paper, using the Φ-mapping theory, it is shown that two kinds of topological defects, i.e., the vortex lines and the monopoles exist in the helical configuration of magnetic field in triplet superconductors. And the inner topological structure of these defects is studied. Because the knot solitons in the triplet superconductors are characterized by the Hopf invariant, we also establish a relationship between the Hopf invariant and the linking number of knots family, and reveal the inner topological structure of the Hopf invariant.展开更多
文摘目的:QT离散度与心肌梗死(MI)后恶性室性心律失常密切相关,它对急性心肌梗死(AMI)的预后作用已引起人们的关注.但是,目前对基于动态心电图记录的三导联QT离散度检测方法及其作用研究甚少.本研究的目的旨在探讨基于动态心电图记录的三导联QT离散度检测方法以及其与心率变异性的相关性.方法:符合WHO诊断标准的48例A-MI患者均于发病6小时内接受动态心电图监测.采用Oxford Prima Holter System动态分析仪,计算基于动态心电图记录的三导联QT离散度指标(QTd、QTpd)及心率变异性指标,并分析其相关性.结果:AMI病人QTd、QTpd与SDNN、HF、LF/HF之间均有显著相关性(r绝对值=0.614～0.808,P分别<0.05).结论:基于动态心电图记录测量的QT离散度、QTp离散度与心率变异性的时域指标SDNN及频域指标LF/HF有很好的相关性,它们能用于评价AMI病人的预后.
基金The project supported by National Natural Science Foundation of China under Grant No. 10275030 Acknowledgments 0ne of the authors, XU Dong-Hui, is indebted to Dr. LIU Yu-Xiao for useful discussions and help.
文摘In this paper, using the Φ-mapping theory, it is shown that two kinds of topological defects, i.e., the vortex lines and the monopoles exist in the helical configuration of magnetic field in triplet superconductors. And the inner topological structure of these defects is studied. Because the knot solitons in the triplet superconductors are characterized by the Hopf invariant, we also establish a relationship between the Hopf invariant and the linking number of knots family, and reveal the inner topological structure of the Hopf invariant.
