一种新的方法来确定从外围测量的中心压力波形,使用基于富里埃的机器学习
Arian Aghilinejad1, Alessio Tamborini1, Morteza Gharib1
1Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, United States.
Artificial intelligence in medicine
|June 26, 2024
概括
一种新的基于富里埃的机器学习 (F-ML) 方法,通过辐射动脉测量准确地估计了中央大动脉压力. 这种非侵入性技术可以通过可穿戴设备改善血液动力学监测.
科学领域:
- 生物医学工程 生物医学工程
- 心血管生理学心血管生理学
- 医疗保健中的机器学习
背景情况:
- 辐射平面化度测量是血液动力学监测的一个关键的非侵入性方法.
- 精确的中央大动脉压力估计从辐射测量需要强大的数学模型.
- 可穿戴医疗保健电子设备越来越多地使用辐射压力传感器.
研究的目的:
- 开发和验证一种新的基于福里埃的机器学习 (F-ML) 方法.
- 为了准确地将非侵入性的辐射压力波形转移到中心压力波形.
- 提高可穿戴设备用于中央血液动力学评估的实用性.
主要方法:
- 开发了一个基于富里埃的机器学习 (F-ML) 转移函数.
- 该方法使用Framingham心脏研究 (2640名参与者) 的辐射和状动脉压力记录进行了测试.
- 通过将F-ML估计与测量的中心压力特征相关联并评估波形形态的准确性来评估性能.
主要成果:
- F-ML估计显示高相关性与测量的静缩 (r=0.97),静缩 (r=0.99) 和平均 (r=0.99) 血压.
- 布兰德-阿尔特曼分析表明偏差可以忽略不计,误差限制在5.4mmHg.
- 在重建中心压力波形状时,F-ML方法实现了5.5%的平均规范化根平均平方误差,优于传统方法.
结论:
- 拟议的F-ML转移函数从辐射测量中提供准确的中央压力波形估计.
- 与现有技术相比,这种方法显著改善了中央压力波形形态的重建.
- F-ML方法有可能扩大在中央血液动力学评估中使用非侵入性设备的潜力.
相关概念视频
01:30Equipments Used To Measure Blood Pressure
951
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...
951
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
01:17Measurement of Blood Pressure
908
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...
908
01:23Assessment of blood pressure in brachial artery(two-step method)
681
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...
681
01:28Special considerations while measuring blood pressure
716
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.
716
01:15Assessment of blood pressure in brachial artery(one-step method)
575
This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
Prepare for the Procedure:
575