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相关概念视频

Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

Assessment of Ventilation II: Respiratory Depth and Rhythm

Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Physical Assessment of the Respiratory Tract II: Inspection01:27

Physical Assessment of the Respiratory Tract II: Inspection

Physical assessment of the respiratory tract through inspection is a crucial step in understanding the patient's respiratory health. It provides insights into the functioning of the respiratory system, the musculoskeletal structure, and even the patient's nutritional status. This comprehensive approach involves observing several vital aspects: chest configuration, breathing patterns, respiratory rates, skin color, and use of accessory muscles.
Chest Configuration
The chest configuration can...

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相关实验视频

Updated: May 11, 2026

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
07:54

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Published on: December 6, 2016

通过对心脏起器中胸阻抗信号的视觉分析来诊断与睡眠相关的呼吸障碍.

Christoph Scharf1, Yong K Cho, Konrad E Bloch

  • 1Cardiovascular Center, University Hospital Zurich, Department of Internal Medicine, Division of Cardiology and Pneumology, Rämistrasse 100, CH-8091 Zürich, Switzerland. christoph.scharf@usz.ch

Circulation
|October 20, 2004
PubMed
概括

心脏起器分钟通风传感器可以准确地检测睡眠呼吸暂停事件. 这项技术提供了一种可行的方法,用于查和监测心脏起器患者的睡眠相关呼吸障碍.

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Last Updated: May 11, 2026

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科学领域:

  • 心脏病学 心脏病学
  • 睡眠医学 睡眠医学
  • 生物医学工程 生物医学工程

背景情况:

  • 心脏起器使用分钟通风传感器来测量通过横胸阻抗的通风.
  • 这种阻抗测量依赖于心脏起器外和电极尖端之间的变化.
  • 该研究探讨了这种现有技术在检测睡眠相关呼吸障碍方面的潜力.

研究的目的:

  • 调查使用心脏起器分钟通风传感器检测睡眠相关呼吸障碍的可行性和准确性.
  • 为了比较传感器的性能与多睡眠学,睡眠呼吸暂停诊断的黄金标准.

主要方法:

  • 来自心脏起器分钟通风传感器的胸外阻抗信号在22名患者的夜间被记录.
  • 这些模拟波形进行了分析,并对呼吸暂停/呼吸暂停事件进行了评分.
  • 同时的多睡眠学被用作比较的参考标准.

主要成果:

  • 起器传感器准确地确定了所有患者中中度至重度睡眠呼吸暂停 (AHI>20小时−1) 的存在或不存在 (ROC=1.0).
  • 检测下部呼吸暂停-呼吸暂停指数 (AHI) 值的准确度很高 (AUC对于AHI≥5小时−1:0.95;AHI≥10小时−1:0.97).
  • 可靠性和协议分析显示,随着时间的推移 (Cronbach alpha:0.85;ICC:0.73) 和事件对事件的比较 (kappa:0.77) 的高精度.

结论:

  • 心脏起器分钟通风传感器可以可行且准确地检测呼吸暂停/呼吸暂停事件.
  • 这种技术显示出在接受心脏起器患者中查和监测与睡眠有关的呼吸障碍的巨大潜力.
  • 这些发现表明,对于现有的起器技术,这是一种新的,非侵入性的应用.