脉压的平均值:使用回归模型进行门诊动脉硬度指数估计的关键特征
Haikang Zhang1, Yunzhang Cheng1, Tianyi Zhang1
1School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China; Shanghai Engineering Research Center of Interventional Medical Device, Shanghai, China.
Medical engineering & physics
|December 13, 2023
概括
这项研究揭示了流动动脉硬度指数 (AASI) 和平均脉压力 (PP ̅) 之间的数学联系. 纳入PP ̅显著增强了AASI估计模型,有助于早期诊断心血管疾病.
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
背景情况:
- 动脉硬是心血管健康的一个关键指标.
- 门诊动脉硬度指数 (AASI) 量化了动脉硬度.
- 了解影响AASI的因素对于心血管风险评估至关重要.
研究的目的:
- 在数学上定义AASI和平均脉冲压 (PP ̅) 之间的关系.
- 为了证明PP ̅对AASI估计准确性的影响.
- 为了呈现一个改进的AASI估计模型.
主要方法:
- 使用心电图 (ECG),光电图 (PPG) 和动脉血压 (ABP) 信号.
- 从生理信号中提取特征.
- 雇佣了适应曲线分析和回归模型来分析AASI和PP.
主要成果:
- 一个立方多项式曲线最好地描述了AASI和PP之间的关系.
- 包括PP ̅作为一个特征改善了AASI估计,减少了跨模型的平均绝对误差 (MAE) (例如,线性回归MAE从0.0556降至0.0372).
- 所有测试的回归模型都显示了相当大的准确性改善.
结论:
- 在AASI和PP之间存在着重要的数学关联.
- 将PP ̅集成到AASI估计模型中,可以大大提高预测准确度.
- 这一发现对于理解血管弹性和早期诊断动脉样硬化至关重要.
相关概念视频
01:24Blood Pressure
3.1K
The movement of blood in a human body, commonly referred to as blood flow, is determined by the volume of blood that traverses a certain section of the bodily system per unit time. It is the rhythmic contraction of the heart's ventricles that primarily instigates this movement. As the ventricles contract, blood is forced into the prominent arteries, which then flow from areas of greater pressure to lower pressure areas. This movement continues into smaller arteries and arterioles and...
3.1K
01:21Sites for measruring blood pressure
1.8K
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
1.8K
01:23Assessment of blood pressure in brachial artery(two-step method)
715
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...
715
01:15Assessment of blood pressure in brachial artery(one-step method)
598
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:
598
01:16Pulse
529
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
The pulse serves as a clinical...
529
01:17Measurement of Blood Pressure
949
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...
949