过诱导的脉冲变化传输时间跨越不同年龄段:在基于光聚缩的无袖血压测量中,这是一个被忽视的问题
Shangdi Liao1, Haipeng Liu2, Wan-Hua Lin3
1Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China.
Frontiers in physiology
|August 10, 2023
概括
过光聚光显微镜 (PPG) 信号显著改变脉冲过渡时间 (PTT) 测量,效果因年龄和PPG特征定义而异. 这些发现对于准确的可穿戴血压监测至关重要.
科学领域:
- 生物医学工程 生物医学工程
- 生理测量生理测量
- 可穿戴技术可穿戴技术
背景情况:
- 脉冲过渡时间 (PTT) 对于使用光斑血压 (PPG) 的无袖血压监测至关重要.
- 可穿戴PPG传感器中的信号过可以在PTT估计中引入不准确性.
- 关于过如何影响不同年龄组的PTT的研究有限.
研究的目的:
- 量化评估年龄和PTT定义对过诱导的PTT变化的影响.
- 为了研究无限冲动响应 (IIR) 过对PTT测量的影响.
- 为改善基于PPG的无袖血压精度提供见解.
主要方法:
- 在五个年龄组 (20-60岁以上) 招募了100名健康受试者.
- 同时记录心电图 (ECG) 和PPG信号.
- 使用基于PPG波形特征的八个定义计算PTT,并比较过和未过的信号,通过ANOVA分析年龄组差异.
主要成果:
- 过显著改变了PTT,受年龄和特定PTT定义的影响 (p < 0.001).
- 在所有定义中,衰老显示了过诱导的PTT变化的一致趋势.
- 由PPG定义的PTT最大峰值表现出最小的过变化 (16.16毫秒,5.65%),而最大的第一个导数显示出最强的年龄相关性 (R平方:0.47).
结论:
- 年龄和PTT定义极大地影响过诱导的PTT变化.
- 这些因素必须考虑,以提高可穿戴PPG型血压装置的准确性.
- 需要进一步的研究来优化针对不同人群的过和PTT定义.
相关概念视频
01:21Sites for measruring blood pressure
1.9K
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
1.9K
01:28Special considerations while measuring blood pressure
756
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.
756
01:17Measurement of Blood Pressure
1.0K
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...
1.0K
01:23Assessment of blood pressure in brachial artery(two-step method)
758
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...
758
01:30Equipments Used To Measure Blood Pressure
1.1K
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...
1.1K
01:16Pulse
586
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...
586