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相关概念视频

2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)01:19

2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)

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Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
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对于ESC 0/1h-hs-cTnT算法的观察区的新标准

Pedro Lopez-Ayala1,2, Thomas Nestelberger1,2,3, Jasper Boeddinghaus1,2

  • 1Cardiovascular Research Institute Basel and Department of Cardiology (P.L.-A., T.N., J.B., L.K., P.D.R., I.S., J.G., S.M., J.W., E.M., R.T., C.M.), University Hospital Basel, University of Basel, Switzerland.

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概括

结合3小时高灵敏性心肌托波宁T水平和0-3小时变化的新标准可以在观察区安全排除非ST升高心肌梗塞 (NSTEMI). 这提高了急性胸部不适患者的诊断效率.

关键词:
在 NSTEMI算法生物标志物心肌梗塞进行分类其他:热素T

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科学领域:

  • 心脏病学
  • 紧急医疗
  • 诊断生物标志物

背景情况:

  • 欧洲心脏病学会 (ESC) 的指导方针建议在观察区的患者中进行3小时的心脏激素测试,以检测非ST升高的心肌梗塞 (NSTEMI).
  • 在ESC 0/1h算法的观察区内没有确定进一步分类的具体切断值.
  • 建议高灵敏性心脏素T (hs-cTnT) 变化截止值为7 ng/L,需要外部验证.

研究的目的:

  • 通过外部验证NSTEMI分类所提议的0/3h hs-cTnT变化截止值.
  • 为ESC 0/1h-hs-cTnT算法的观察区推导和验证新的0/3h标准.
  • 提高诊断准确性和治疗急性胸部不适患者的效率.

主要方法:

  • 在国际多中心研究中招募急性胸部不适的患者.
  • 在呈现时进行序列hs-cTnT测量,1小时和3小时.
  • 使用心肌梗塞的第四个普遍定义进行最终诊断.

主要成果:

  • 建议的0/3h hs-cTnT变化<7 ng/L显示出低灵敏度 (33.3%) 排除NSTEMI.
  • 新的衍生标准 (3h hs-cTnT <15 ng/L和0/3h绝对变化 <4 ng/L) 排除了NSTEMI的99.2%灵敏度.
  • 这些新标准使观察区患者的心肌梗塞减少了36%和1型心肌梗塞减少了50%,在内部和外部得到证实.

结论:

  • 3h hs-cTnT (<15 ng/L) 和0/3h绝对变化 (<4 ng/L) 的组合可以安全地排除ESC 0/1h算法观察区中的NSTEMI.
  • 这些标准提高了诊断效率,减少了对NSTEMI的不必要调查.
  • 临床试验.gov 标识:NCT00470587.