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相关概念视频

Pulse rhythm01:30

Pulse rhythm

768
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...
768
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

880
Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a...
880
Assessment of blood pressure in brachial artery(two-step method)01:23

Assessment of blood pressure in brachial artery(two-step method)

656
Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
656
Assessment of blood pressure in brachial artery(one-step method)01:15

Assessment of blood pressure in brachial artery(one-step method)

556
This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
556
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

835
Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
835
Pulse Oximetry01:24

Pulse Oximetry

311
Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
311

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相关实验视频

Updated: Jun 7, 2025

Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis
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一个新的基于胸部的PPG测量系统

Qiuyang Lin1, Haocun Wang2, Dwaipayan Biswas1

  • 1imec 3001 Heverlee Belgium.

IEEE journal of translational engineering in health and medicine
|November 19, 2024
PubMed
概括

一个新的高动态范围 (DR) 集成电路 (IC) 系统使得精确的胸部光电图 (PPG) 监测生命体征. 这种可穿戴技术可以实现高心率准确度,并可以监测呼吸和血液氧气水平.

关键词:
胸部光复发电图 (PPG) 是一种胸部光复发电图.血液中的氧气水平 (SpO2)动态范围 (DR) 的动态范围电心电图 (ECG) 是一种心电图.呼吸系统 呼吸系统 呼吸系统

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科学领域:

  • 生物医学工程 生物医学工程
  • 可穿戴技术可穿戴技术
  • 集成电路设计 集成电路设计

背景情况:

  • 集成电路 (IC) 的小型化使得先进的身体佩戴传感器能够进行长期健康监测.
  • 可穿戴式心电图 (ECG) 和光电图 (PPG) 设备改善了患者的生活质量.
  • 基于胸部的PPG提供了多生命信号提取的潜力,但需要超高动态范围 (DR) 的IC来克服信号噪声.

研究的目的:

  • 为可穿戴胸部PPG应用提供专门的高DR IC系统.
  • 用全面的车身测量协议验证系统的性能.
  • 证明系统能够准确地提取多个生命体征的能力.

主要方法:

  • 开发了一个小型的形式因素,高DR IC系统集成在20厘米2的PCB板上,用于胸部PPG.
  • 在工作环境中与6名成年参与者进行了胸部PPG测量.
  • 通过将胸部PPG数据与用于心率 (HR) 和心率变化 (HRV) 监测的标准心电图贴片进行比较,验证了系统准确性.

主要成果:

  • 与心电图相比,达到>99.53%的HR精度,平均绝对偏差 (AD) 为每分钟0.41次.
  • 在SDNN中证明HRV监测与传统PPG设备相匹配>98.6%HR匹配和<12.8 ms AD.
  • 成功推导出呼吸速率和血液氧气水平 (SpO2),表现优于参考模式.

结论:

  • 开发的高DR胸部PPG系统提供了准确可靠的生命体征监测.
  • 这项技术推进了可穿戴健康监测,使得像慢性疾病管理的胸部贴片等新应用成为可能.
  • 该系统提取多个生命体征的能力意味着可穿戴传感器能力的飞跃.