检查通过光电血图估计血压的挑战
Suril Mehta1, Nipun Kwatra2, Mohit Jain2
1Microsoft Research, Bengaluru, India. suril15104@iiitd.ac.in.
Scientific reports
|August 7, 2024
概括
穿戴式传感器,如光电脉冲图 (PPG),显示预测血压的信息有限. 新的分析工具揭示了重大挑战,表明目前的方法可能会高估基于PPG的血压监测的准确性.
科学领域:
- 生物医学工程 生物医学工程
- 医疗信息学 医疗信息学
- 信号处理 信号处理
背景情况:
- 穿戴式传感器,特别是光聚体图 (PPG),越来越多地被研究用于推断血压等健康指标.
- 当前的深度学习方法经常使用临床数据来训练模型,可能会忽视传感器信号中的基本信息内容.
- 现有研究可能会受到数据泄露和不切实际的假设的影响,阻碍准确的进度评估.
研究的目的:
- 批判性地分析PPG信号用于估计血压的预测能力.
- 开发和应用工具,以原则性评估基于PPG的健康监测中的信号信息内容和数据泄漏.
- 提供现实的评估当前在可穿戴血压测量方面的进展.
主要方法:
- 审查了从PPG脉冲波分析中预测血压的先前研究,确定了数据泄露等常见陷.
- 开发分析工具来量化特定健康指标的PPG信号的信息内容和可预测性.
- 计算了多值映射因子和相互信息,以评估PPG和血压,PPG和心率之间的关系.
主要成果:
- 来自PPG的血压预测显示了高的多值映射因子 (33.2%) 和低的相互信息 (9.8%).
- 相比之下,使用PPG验证的应用程序预测心率显示了低的多值映射因子 (0.75%) 和高的相互信息 (87.7%).
- 这些定量指标表明,PPG信号对血压的信息比心率的信息少得多.
结论:
- 对血压PPG的预测能力显著有限,这与之前的一些工作中乐观的说法相反.
- 开发的分析工具为评估可穿戴传感器数据对健康监测的有用性提供了更严格的框架.
- 需要进一步的研究来克服PPG固有的局限性,以便可靠,非侵入性血压监测.
更多相关视频
11:26Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
Published on: December 10, 2014
12.3K
05:51Assessing the Accuracy of Fitness Smartwatch Data for Cardiovascular and Physical Activity Monitoring: A Validation Study in Digital Health
Published on: February 21, 2025
404
相关概念视频
01:28Special considerations while measuring blood pressure
711
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.
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.
711
01:25Errors occurring during blood pressure monitoring
661
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...
Several factors...
661
01:17Measurement of Blood Pressure
901
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...
901
01:30Equipments Used To Measure Blood Pressure
904
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...
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...
904
01:10Pre-Procedural Guidelines for Assessing Blood Pressure
537
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...
537
01:21Sites for measruring blood pressure
1.6K
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
The Brachial Artery: Primary Site for Blood Pressure Measurement
1.6K