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相关概念视频

Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

724
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.
724
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

973
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...
973
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

933
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...
933
Sites for measruring blood pressure01:21

Sites for measruring blood pressure

1.7K
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
1.7K
Errors occurring during blood pressure monitoring01:25

Errors occurring during blood pressure monitoring

730
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...
730
Assessment of blood pressure in brachial artery(two-step method)01:23

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

711
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...
711

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相关实验视频

Updated: Jul 6, 2025

Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis
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Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis

Published on: April 26, 2024

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基于PPG和ECG信号的血压估计,使用知识蒸.

Hui Tang1, Gang Ma2,3, Lishen Qiu2,3

  • 1School of Electronic and Information Engineering, Soochow University, Suzhou, 215006, China.

Cardiovascular engineering and technology
|January 9, 2024
PubMed
概括

这项研究引入了一种使用光电心电图 (PPG) 和心电图 (ECG) 信号进行准确血压估计的深度学习模型. 知识蒸提高了模型的效率和预测准确性,为传统方法提供了有希望的替代方案.

关键词:
血压 血压 血压 血压这是一个ECGECGECGECGECG.知识的蒸知识的蒸.这是一个PPGPPG.

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Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
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Implantation of Combined Telemetric ECG and Blood Pressure Transmitters to Determine Spontaneous Baroreflex Sensitivity in Conscious Mice
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Implantation of Combined Telemetric ECG and Blood Pressure Transmitters to Determine Spontaneous Baroreflex Sensitivity in Conscious Mice

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Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
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Implantation of Combined Telemetric ECG and Blood Pressure Transmitters to Determine Spontaneous Baroreflex Sensitivity in Conscious Mice
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科学领域:

  • 生物医学工程 生物医学工程
  • 医疗保健中的机器学习
  • 心血管监测 心血管监测

背景情况:

  • 基于袖子和侵入性血压 (BP) 监测存在重大局限性.
  • 易于访问的生物信号为非侵入性BP估计提供了潜在的解决方案.
  • 光电心电图 (PPG) 和心电图 (ECG) 信号是随时可用的生物信号.

研究的目的:

  • 开发和验证一种深度学习模型,用于估计心压和腹压血压.
  • 为了利用知识蒸培训一个高效和准确的BP估计模型.
  • 评估模型的性能与既定医疗标准相比.

主要方法:

  • 设计了一种多阶段的深度学习架构,包括卷积,双向反复和注意层.
  • 使用知识蒸,训练一个较小的学生模型,使用来自较大的教师模型的见解.
  • 该模型从MIMIC III数据库中对1205名受试者进行了训练和验证.

主要成果:

  • 该模型在压缩性血压 (SBP) 和压缩性血压 (DBP) 估计方面实现了A级性能,符合AAMI标准.
  • 经过知识蒸 (KD),该模型显示SBP的平均绝对误差为2.94 ± 5.61 mmHg,DBP的平均误差为2.02 ± 3.60 mmHg.
  • 该KD训练方法显著减少了模型参数,同时提高了预测准确性.

结论:

  • 知识蒸是血压回归模型的有益训练策略.
  • 拟议的深度学习模型为血压监测提供了一种可行的,非侵入性的方法.
  • 该研究强调了PPG和ECG信号的潜力,以准确估计BP.