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相关概念视频

Assessing Blood pressure using a doppler ultrasound01:19

Assessing Blood pressure using a doppler ultrasound

1.2K
To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
1.2K
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

778
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...
778
Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

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When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
694
Pre-Procedural Guidelines for Assessing Blood Pressure01:10

Pre-Procedural Guidelines for Assessing Blood Pressure

518
Accurate blood pressure assessment is crucial for diagnosing and managing various health conditions. To ensure the reliability of these measurements, healthcare professionals must adhere to standardized pre-procedural guidelines. These guidelines enhance patient safety and improve the overall quality of healthcare. The following steps are essential for obtaining accurate and consistent blood pressure readings, from using the appropriate tools to ensuring effective communication with the...
518
Assessment of blood pressure in brachial artery(two-step method)01:23

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

642
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...
642
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

771
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...
771

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相关实验视频

Updated: May 21, 2025

Automated Midline Shift and Intracranial Pressure Estimation based on Brain CT Images
14:08

Automated Midline Shift and Intracranial Pressure Estimation based on Brain CT Images

Published on: April 13, 2013

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一种无袖子血压估计方法,使用维度增加和二维卷积.

Shouyi Cui, Guowei Yang, Jingxuan Guan

    IEEE journal of biomedical and health informatics
    |March 21, 2025
    PubMed
    概括
    此摘要是机器生成的。

    这项研究引入了一种新的无袖血压 (BP) 估计方法,该方法使用在心电图 (ECG) 和光电图 (PPG) 图像上训练的2D卷积模型. 这种方法显著提高了BP监测的准确性和可行性.

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    Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
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    Measuring Blood Pressure in Mice using Volume Pressure Recording, a Tail-cuff Method
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    Automated Midline Shift and Intracranial Pressure Estimation based on Brain CT Images
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    Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
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    Measuring Blood Pressure in Mice using Volume Pressure Recording, a Tail-cuff Method
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    科学领域:

    • 生物医学工程 生物医学工程
    • 信号处理 信号处理
    • 机器学习 机器学习

    背景情况:

    • 目前的血压 (BP) 监测方法,如基于袖口的非侵入性和血管穿孔的侵入性技术,在实时应用和实用性方面存在局限性.
    • 准确和持续的血压监测对于管理高血压和相关心血管疾病至关重要.

    研究的目的:

    • 开发一种使用二维卷积神经网络估计血压 (BP) 的新无袖方法.
    • 通过将生理信号转换为图像表示来提高BP估计的准确性和效率.
    • 在临床数据集上验证拟议方法的性能和概括能力.

    主要方法:

    • 电心电图 (ECG) 和光电图 (PPG) 信号被转化为2D图像,使用维度增加算法,如复发图和格拉米安角场.
    • 提出了新的图像表示技术,即合格拉米安角场 (FGAF) 和组合格拉米安角场 (CGAF),以优化数据并增强信号相关性.
    • 包括VGGNet在内的2D卷积神经网络模型被训练在这些图像上进行BP估计,随后进行模型修剪以减少尺寸.
    • 修剪后的VGGNet模型在MIMIC-III数据集上进行了微调和验证,并开发了一种原型监控系统.

    主要成果:

    • 与1D模型相比,2D卷积模型显著提高了BP估计的准确性,VGGNet使用格拉米安角度差异场 (GADF) 显示38%的准确性增加.
    • 拟议的FGAF和CGAF方法减少了50%的输入数据,同时保持了高估计准确度.
    • 缩和腹缩血压估计的最小平均绝对误差分别达到2.71和1.74mmHg.
    • 一个经过修剪的VGGNet模型保持了性能,同时将频道数量减少了60%,证明了对MIMIC-III数据集的概括能力.

    结论:

    • 建议使用2D卷积模型的无袖BP估计方法为传统BP监测提供了一个有希望,准确和实用的替代方案.
    • 新型图像转换技术 (FGAF,CGAF) 有效地降低了数据的复杂性,并提高了信号相关性,以提高BP估计.
    • 开发的系统证明了实时信号收集和血压估计的可行性,为改善心血管健康管理铺平了道路.