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相关概念视频

Neural Regulation of Blood Pressure01:18

Neural Regulation of Blood Pressure

3.4K
The neural regulation of blood pressure involves intricate interactions between the autonomic nervous system (ANS) and cardiovascular system, ensuring adequate perfusion of tissues. This regulation primarily occurs through baroreceptor and chemoreceptor reflexes, involving both short-term and long-term mechanisms.
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...
3.4K
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

2.4K
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...
2.4K
Sites for measruring blood pressure01:21

Sites for measruring blood pressure

2.4K
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
2.4K
Pulse rhythm01:30

Pulse rhythm

927
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
927
Errors occurring during blood pressure monitoring01:25

Errors occurring during blood pressure monitoring

971
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...
971
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

1.5K
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...
1.5K

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相关实验视频

Updated: Sep 12, 2025

A Novel Digital Platform for a Monitored Home-based Cardiac Rehabilitation Program
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A Novel Digital Platform for a Monitored Home-based Cardiac Rehabilitation Program

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一个闭环生物电子补丁,用于智能血压管理.

Yuyan Zou1, Zeguo Chen2, Bowen Jin1

  • 1Hunan Provincial Key Laboratory of Micro and Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China.

Science advances
|August 6, 2025
PubMed
概括

本研究介绍了一种智能血压管理系统 (BPMS),用于实时监测和干预. 该系统使用微针来输送氧化 (NO),从而实现心血管疾病管理的按需血管扩张.

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Wireless Telemetry Device Implantation in a Fontan Ovine Model for Continuous and Long-Term Hemodynamic Monitoring
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Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing
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Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

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Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing
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科学领域:

  • 生物医学工程 生物医学工程
  • 纳米技术纳米技术
  • 心血管医学 心血管医学

背景情况:

  • 心血管疾病是导致死亡的主要原因,通常是由于药物干预的延迟.
  • 目前的治疗方法缺乏实时监测和适应性治疗反应.
  • 需要创新的系统来持续管理血压.

研究的目的:

  • 开发一种智能血压管理系统 (BPMS),用于实时监测和适应性干预.
  • 创建一个闭环框架,集成传感器,控制电路和微针电极,用于精确的NO输送.
  • 为了研究一种新的微针架构对按需血管扩张的有效性.

主要方法:

  • 设计了一个分层的微针架构,采用金纳米粒子 (Au NP) 电催化剂和铜胺碳纳米带 (Cu-NC NB) 纳米酶.
  • 使用电流 (EOF) 机制,增强氧化 (NO) 输送到4mm.
  • 闭环BPMS框架的集成传感器和控制电路.
  • 在子和猪身上进行了体内研究,以评估血液动力学控制.

主要成果:

  • 在BPMS中,证明了对血压波动的反应中NO释放的动态调节.
  • 通过按需血管扩张实现实时血液动力学控制.
  • 多孔微针 (PMN) 阵列促进了有效的血管透和NO扩散.
  • 在动物模型中成功验证了系统的有效性.

结论:

  • 开创了一种闭环策略,用于持续监测血压和按需血管扩张.
  • 开发的BPMS为智能心血管疾病管理提供了一种变革性的方法.
  • 这种基于微针的新型NO输送系统显示了治疗应用的巨大潜力.