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相关概念视频

Electrocardiogram01:29

Electrocardiogram

An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...

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Doppler Optical Coherence Tomography of Retinal Circulation
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心脏视网膜时间分析使用心电图-合时间解析的动态光学连贯性断层扫描.

Philippe Valmaggia1,2,3, Julia Wolleb4, Florentin Bieder4

  • 1Department of Biomedical Engineering, University of Basel, Hegenheimermattweg 167b/c, 4123, Allschwil, Switzerland. philippe.valmaggia@unibas.ch.

Scientific reports
|January 3, 2025
PubMed
概括

研究人员开发了一种结合心电图 (ECG) 和光学连贯性断层扫描 (OCT) 的新方法来测量心脏视网膜时间 (HRT). 这种新技术量化了视网膜的血液流动动态,为心血管健康提供了潜在的生物标志物.

关键词:
心脏循环周期的心脏周期动态光学连贯性断层扫描仪电心电图 (ECG) 是一种心电图.心脏视网膜时间视网膜的血液流动.

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Last Updated: May 10, 2026

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科学领域:

  • 眼科医生 眼科 眼科
  • 心脏病学 心脏病学
  • 生物医学工程 生物医学工程

背景情况:

  • 眼睛和心脏紧密联系在一起,心血管疾病经常表现出眼睛症状.
  • 了解视网膜血流动力学对于诊断和管理系统性疾病至关重要.

研究的目的:

  • 开发一种同步的方法来监测心脏周期和视网膜血流.
  • 建立一个衡量量血流传播时间从心脏到视网膜的指标.

主要方法:

  • 结合心电图 (ECG) 与时间解析的动态光学连贯性断层扫描 (OCT).
  • 使用边缘冲洗分析计算视网膜动脉小动脉中时间解析的血液流速概况.
  • 测量心脏缩和血液到达视神经头部边缘之间的时间延迟.

主要成果:

  • 成功同步了心电图和动态OCT测量.
  • 在视网膜动脉小管中计算出时间解析的血液流速概况.
  • 在健康人群中,确定心脏视网膜时间 (HRT) 为 144 ± 19 ms.

结论:

  • 开发的方法使心脏和视网膜血流的持续,同步监测成为可能.
  • 心脏视网膜时间 (HRT) 表示血液流动在单个心脏周期内的传播时间.
  • HRT显示出作为评估心血管健康和视网膜输液的新型非侵入性生物标志物的潜力.