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相关概念视频

Special considerations while measuring pulse01:13

Special considerations while measuring pulse

889
Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
889
Pulse rhythm01:30

Pulse rhythm

1.3K
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...
1.3K
Assessment of radial pulse01:11

Assessment of radial pulse

1.3K
Assessment of Radial Pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
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Assessment of apical radial pulse01:25

Assessment of apical radial pulse

1.2K
Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
1.2K
Pulse01:16

Pulse

1.9K
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
1.9K
Assessment of apical pulse01:17

Assessment of apical pulse

1.9K
Assessing the Apical Pulse
Assessing the apical pulse is a critical nursing procedure, particularly indicated for:
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相关实验视频

Updated: Jan 9, 2026

Ultrasound-based Pulse Wave Velocity Evaluation in Mice
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评估DS-EWMA算法的脉冲率估计性能

Rawan S Abdulsadig, Esther Rodriguez-Villegas

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |December 3, 2025
    PubMed
    概括

    基于主导分数和指数加权移动平均数驱动 (DS-EWMA) 算法在估计从具有挑战性的光聚光学 (PPG) 信号的脉冲率方面表现强,在运动期间或使用基于部传感器的其他方法中表现优于其他方法.

    科学领域:

    • 生物医学工程 生物医学工程
    • 信号处理 信号处理
    • 医疗信息学 医疗信息学

    背景情况:

    • 可靠的生命体征监测,特别是心率估计,对于医疗保健至关重要.
    • 光电显微镜 (PPG) 信号被广泛用于生命体征监测,特别是在家庭环境中.
    • 基于PPG的生命体征估计的性能在很大程度上取决于所选择的算法和传感器位置.

    研究的目的:

    • 为了评估DS-EWMA脉冲率估计算法的稳定性和性能.
    • 将DS-EWMA与使用多种PPG数据集的六种最先进的算法进行比较.
    • 在不同的条件下评估算法性能,包括静止和运动诱导的工件.

    主要方法:

    • 基于主导分数和指数加权移动平均数驱动 (DS-EWMA) 的算法被评估.
    • 对比涉及六种已建立的算法:HeartPy,BioSPPy,Msptd,Qppg,Ampd和Erma. 这三种算法都被使用了.
    • 通过使用RMSE,MAE,STD,PCC,MAPE等指标以及四个PPG数据集的百分比准确度来评估性能.

    主要成果:

    • 在静止条件下,手指PPG,HeartPy和Msptd通常表现出优异的性能.
    • 在静止条件下,DS-EWMA,Ampd和Erma表现中等.

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  • 在分析杂的PPG信号 (部PPG,受运动影响的手指PPG) 时,DS-EWMA显著优于其他算法.
  • 结论:

    • DS-EWMA算法表现出显著的稳定性,特别是在具有挑战性的PPG信号场景中.
    • 像HeartPy,Qppg和BioSPPy这样的现有算法显示出运动工件或非理想传感器位置的限制.
    • 进一步完善DS-EWMA方法有望提高生命体征监测准确度.