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相关概念视频

Pre-Procedural Guidelines for Assessing Blood Pressure01:10

Pre-Procedural Guidelines for Assessing Blood Pressure

520
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...
520
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

825
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...
825
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

868
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...
868
Errors occurring during blood pressure monitoring01:25

Errors occurring during blood pressure monitoring

599
Blood pressure monitoring is a crucial clinical procedure in diagnosing and managing various cardiovascular conditions. Despite its significance, the accuracy of blood pressure measurements can be compromised by multiple factors, potentially leading to either falsely high or low readings. These inaccuracies are critical as they can significantly impact patient care. So, it is vital to understand these challenges deeply and adopt strategic approaches to minimize errors.
Several factors...
599
Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

703
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.
703
Sites for measruring blood pressure01:21

Sites for measruring blood pressure

1.5K
Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement
1.5K

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相关实验视频

Updated: Jun 5, 2025

Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
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Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression

Published on: December 10, 2014

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使用可解释的深度学习模型的血压估计,基于光电显微镜.

Jade Perdereau1,2,3, Thibaut Chamoux2,3, Etienne Gayat1,3

  • 1From the Université Paris Cité, INSERM UMRS 942 (MASCOT), Paris, France.

Anesthesia and analgesia
|December 16, 2024
PubMed
概括
此摘要是机器生成的。

一个新的深度学习模型使用光电血压学 (PPG) 信号非侵入性地估计平均动脉压 (MAP). 这种准确的,连续的监测方法在没有侵入性方法的手术室中显示出有希望的结果.

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Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis
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Author Spotlight: Addressing Technical and Subjective Challenges in Measuring Classroom Attention
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Author Spotlight: Addressing Technical and Subjective Challenges in Measuring Classroom Attention

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相关实验视频

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Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis
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Author Spotlight: Addressing Technical and Subjective Challenges in Measuring Classroom Attention
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科学领域:

  • 生物医学工程 生物医学工程
  • 医疗器械 医疗器械
  • 人工智能在医学中的应用

背景情况:

  • 动脉线提供卓越的血液动力学监测,但具有侵入性,不适用于常规使用.
  • 需要持续的,非侵入性的动脉压监测,以克服间歇性袖口测量的局限性.
  • 光电脉冲图 (PPG) 信号为持续的动脉压估计提供了一个潜在的非侵入性来源.

研究的目的:

  • 开发和验证一个深度学习模型,从PPG信号中重建连续平均动脉压 (MAP).
  • 为了将深度学习模型的性能与动脉线黄金标准进行比较.
  • 评估非侵入性MAP估计作为临床环境中的决策支持工具的潜力.

主要方法:

  • 使用卷积层和循环层的深度学习模型被训练在117名患者的高频PPG信号上.
  • 输入特征包括PPG信号和衍生指标,如二突幅度和心率.
  • 使用平均绝对误差 (MAE) 评估模型性能,并通过Grad-CAM突出度图评估可解释性.

主要成果:

  • 深度学习模型的平均绝对误差 (MAE) 为3.5 (±4.4) mm Hg,比基线袖口模型 (MAE 6.1 ± 14.5 mm Hg) 提高了42.6%.
  • 该模型符合国际准确性标准 (A级) 并显示了狭窄的置信区间.
  • 格拉德-CAM分析表明,该模型主要利用来自PPG波形的二突区域的信息.

结论:

  • 开发的深度学习模型使用PPG信号准确地估计了动脉压的非侵入性.
  • 这项技术有可能成为手术室中一个有价值的决策支持工具,特别是当侵入性监测是不可行的时.
  • 进一步融入临床工作流程可以提高患者监测和安全.